To approach the runway, a pilot of a small plane must begin a 7 degrees descent starting from a height of 1069 feet above the ground. To the nearest tenth of a mile, how many miles from the runway is the airplane at the start of this approach?

To Approach The Runway, A Pilot Of A Small Plane Must Begin A 7 Degrees Descent Starting From A Height

Answers

Answer 1

The airplane is approximately 1.7 miles from the runway at the start of the approach.

What is trigonometry?

Trigonometry, the branch of mathematics concerned with specific functions of angles and their application to calculations. There are six functions of an angle commonly used in trigonometry

To solve this problem, we need to use trigonometry. The angle of descent is 7 degrees, which means that the angle between the horizontal ground and the plane's flight path is 7 degrees. We can use the tangent function to find the distance from the runway:

tangent (7 degrees) = opposite / adjacent

The opposite side is the height of the plane above the ground, which is 1069 feet. The adjacent side is the distance from the plane to the runway, which we need to find.

tangent (7 degrees) = 1069 / adjacent

We can solve for the adjacent side by multiplying both sides by the denominator:

adjacent = 1069 / tangent(7 degrees)

Using a calculator, we get:

adjacent = 1069 / 0.122173048

adjacent = 8743.3 feet

To convert this to miles, we divide by the number of feet in a mile:

adjacent = 8743.3 / 5280

adjacent = 1.655 miles

Rounding to the nearest tenth of a mile, we get:

The airplane is approximately 1.7 miles from the runway at the start of the approach.

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Related Questions

questions are in the images below :)

Answers

a. The balances in the accounts after 5 and 20 years is $12,164.77.

b. The percentage of the balance that is interest is 70%.

c. We need to deposit $17,426.93 today to have $25,000 in 8 years in an account with annual compounding and an APR of 5%.

What is Principal?

Principal refers to  initial amount of money invested or borrowed. It is  starting point for calculating  interest or return on investment, or amount owed on loan.

96)

a) To compute the balances in the accounts after 5 and 20 years, we can use the formula for compound interest:

[tex]A = P(1 + \frac{r}{n})^{nt}[/tex]

where A is the ending balance, P is the principal, r is the annual interest rate, n is the number of times the interest is compounded per year, and t is the number of years.

For Paula's account:

After 5 years:

A = 4000(1 + 0.048/365[tex])^{(3655)[/tex] = $5,478.71

After 20 years:

A = 4000(1 + 0.048/365[tex])^{(36520)[/tex] = $9,847.15

For Petra's account:

After 5 years:

A = 3600(1 + 0.056/365[tex])^{(3655)[/tex] = $5,029.80

After 20 years:

A = 3600(1 + 0.056/365[tex])^{(36520)[/tex] = $12,164.77

b) To determine the percentage of the balance that is interest, we can subtract the principal from the ending balance, and then divide by the ending balance:

For Paula's account:

After 5 years:

Interest = $5,478.71 - $4,000 = $1,478.71

Percentage of balance that is interest = (Interest / $5,478.71) * 100% = 27%

After 20 years:

Interest = $9,847.15 - $4,000 = $5,847.15

Percentage of balance that is interest = (Interest / $9,847.15) * 100% = 59%

For Petra's account:

After 5 years:

Interest = $5,029.80 - $3,600 = $1,429.80

Percentage of balance that is interest = (Interest / $5,029.80) * 100% = 28%

After 20 years:

Interest = $12,164.77 - $3,600 = $8,564.77

Percentage of balance that is interest = (Interest / $12,164.77) * 100% = 70%

c) The effect of interest rates and patience can be observed in the significant differences between the ending balances and percentage of interest earned by Paula and Petra. Petra's account had a higher interest rate, resulting in a larger ending balance and a higher percentage of interest earned. Additionally, the longer the investment period, the more the interest compounds and the greater the ending balance becomes. Therefore, patience is key in allowing the investment to grow over time.

81) An account with annual compounding and an APR of 5%

P = 25,000 / (1 + 0.05/[tex]1)^{(1\cdot 8)[/tex] = $17,426.93

Therefore, we need to deposit $17,426.93 today to have $25,000 in 8 years in an account with annual compounding and an APR of 5%.

82) An account with quarterly compounding and an APR of 4.5%

P = 25,000 / (1 + 0.045/4[tex])^{(4 \cdot 8)[/tex] = $17,721.15

Therefore, we need to deposit $17,721.15 today to have $25,000 in 8 years in an account with quarterly compounding and an APR of 4.5%.

87)  An APR of 2.8%, compounded quarterly

First, we need to convert the annual interest rate to a quarterly interest rate by dividing it by 4:

r = 0.028/4 = 0.007

Then, we can use the formula:

P = 120,000 / (1 + 0.007[tex])^{(4\cdot 15)[/tex] = $70,055.47

Therefore, we need to deposit $70,055.47 today in an account with an APR of 2.8%, compounded quarterly, to have a $120,000 college fund in 15 years.

89)  We can use the formula for compound interest to calculate the balance in the accounts after 10 and 30 years:

Balance for Chang: B = [tex]P(1 + r)^t[/tex]

where P = 500, r = 0.035, and t = 10 or 30 years.

Balance for Kio: B = [tex]P(1 + r)^t[/tex]

where P = 500, r = 0.0375, and t = 10 or 30 years.

After 10 years:

Chang's balance: B = [tex]500 (1 + 0.035)^{10[/tex] = $743.22

Kio's balance: B = 500*(1 + 0.0375)^10 = $779.58

After 30 years:

Chang's balance: B = [tex]500 (1 + 0.035)^{30[/tex] = $1,373.63

Kio's balance: B = [tex]500(1 + 0.0375)^{30[/tex] = $1,441.39

As we can see, even though the difference in interest rates is small (0.035 vs 0.0375), it can have a significant impact on the final balance of the account over a long period of time. In this case, after 30 years, Kio's account balance is almost $70 higher than Chang's account balance, even though they both invested the same amount of money.

91)   The formula for calculating the annual percentage yield (APY) is:

APY = [tex](1 + r/n)^n - 1[/tex]

where r is the annual interest rate (in decimal form) and n is the number of compounding periods per year.

For quarterly compounding:

n = 4

APY = (1 + 0.066/4)⁴ - 1 = 0.0677 or 6.77%

For monthly compounding:

n = 12

APY = (1 + 0.066/12)¹² - 1 = 0.0681 or 6.81%

For daily compounding:

n = 365

APY = (1 + 0.066/365[tex])^{365[/tex] - 1 = 0.0682 or 6.82%

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Aaron has 2 pizzas left over from a sleepover.
He ate 1/8 of the leftover pizza
for lunch. How much of the pizza did he
eat? How much is left?

Answers

If Aron has 2 pizzas left from the sleepover, and he ate 1/8 of one pizza, that means he ate:

1/8 * 1 = 1/8 of a pizza

So he ate 1/8 of a pizza.

To find out how much pizza is left, we need to subtract the amount that he ate from the total amount of pizza. If he started with 2 pizzas and ate 1/8 of one pizza, that means there are:

2 - 1/8 = 15/8

So there are 15/8 (or 1 and 7/8) pizzas left

Assume AC|| DF. Find the following angle measures. (Type your answers in the
corresponding blanks below.)

Answers

Using the corresponding and alternate angles, we found the measures of the following angles:

1) m∠ABE = 82°

2) m∠EBF = 53°

3) m∠BFE = 45°

4) m∠BEF = 82°

What are corresponding angles?

Corresponding angles are those that are created when two parallel lines are intersected by another line, whether it be a transversal or a matching corner (i.e. the transversal). According to the definition of corresponding angles, when two parallel lines are intersected by a third line, the angles that are present at each intersection and are in the same relative position are said to be corresponding angles.

The angles created when a transversal cuts two straight lines are known as alternative angles, and they are formed on the opposite side of the transversal with regard to both lines.

Here the lines AC and DF are parallel to each other.

The line EB cuts them.

So corresponding angles are formed.

∠DEB = ∠ABG = 98°

Now ∠ABG + ∠ABE = 180°

So ∠ABE = 180 - ∠ABG = 180 - 98 = 82°

∠ABE + ∠EBF + 45° = 180°

82 + ∠EBF + 45 = 180

∠EBF = 53°

∠BFE = ∠FBE = alternate angles

∠BFE = 45°

∠BEF = ∠ABE = alternate angles

∠BEF = 82°

Therefore using the corresponding and alternate angles, we found the measures of the following angles:

1) m∠ABE = 82°

2) m∠EBF = 53°

3) m∠BFE = 45°

4) m∠BEF = 82°

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Jenny has a job transporting soft drinks by truck. Her truck is filled with cans that weigh 14 ounces each and bottles that weigh 70 ounces each. There is a
combined total of 900 cans and bottles in her truck.
Let x be the number of 14-ounce cans in her truck. Write an expression for the combined total weight (in ounces) of the cans and bottles in her truck.

Answers

Therefore , the solution of the given problem of expressions comes out to be 14x + 70(900 - x) .

Expression : What is it?

Estimates that combine joining, deactivating, but instead random divide should be produced with shifting variables. If they banded together, they could do the following: a mathematical conundrum, some data, and software. A statement of truth contains formulas, components, and arithmetic procedures like adding, subtractions, omissions, and groupings. It is possible to assess and analyse both words and sentences.

Here,

Assume that her vehicle contains x 14-ounce cans.

900 - x = the amount of bottles in her truck (since the total number of cans and bottles is 900.

The cans in her truck carry a total of 14 ounces.

Similar to that, her truck's entire bottle weight is

=>  70(900 - x) ounces.

As a result, the cans and bottles in her truck's entire combined weight (in ounces) can be expressed as follows:

=> 14x + 70(900 - x)

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help with this please.​

Answers

Answer:

There are duplicate letter choices for example, two E's and three Hs so be sure to choose the right one

1, ⇔ A   3221.21

2 ⇔ E   10.13

3 ⇔ H  133.63

4 ⇔  L    11.59

---------------------------------------

5 ⇔  H   346.77

6  ⇔  E   1.35

7   ⇔  R   0.54

8.  ⇔ T    0.02

----------------------------------

9 ⇔  O  [tex]f(t) = 33,000( 1- 0.27)^t[/tex]

10 ⇔ H  [tex]f(t) = 9.56(1.03)^t[/tex]

11 ⇔  F   [tex]f(t) = 5(1+ 0.125)^t\\[/tex]

12 ⇔  T  [tex]f(t) = 4000(1.01)^t[/tex]

Step-by-step explanation:

These questions can be solved by plugging in the value of each of the given variables into each equation and solving using a calculator

I will provide the solution steps for one from each batch.
Q1 - Q4
t  = 4

Q1.
[tex]y =275 ( 1 + 0.85)^4\\\\= 275(1.85)^4\\\\= 275 \times 11.71350625\\\\= 3221. 21 \text{ to the nearest hundredth}[/tex]

You really don't have to compute (1.85)⁴ separately; most calculators can do everything in one shot

Correct answer: A

-----------------------------------------------------------------------------------------------------

5 - 8
Q8
[tex]h(t) = 0.8\left(\dfrac{3}{5}\right)^t \\\\\text{When t = 7}\\h(7) = 0.8\left(\dfrac{3}{5}\right)^7 \\\\= 0.8(0.6)^7 \;\;\;\;\left(\dfrac{3}{5} = 0.6} \right)\\\\= 08 \times 0.0279936\\\\= 0.02239488\\\\= 0.02\text{ to the nearest hundredth}[/tex]

Corresponds to T

--------------------------------------------------------------------------------------------

9 - 12

You can determine all of these by looking at the multiplier in the given equations for f(t) where the multiplier is the constant outside the parentheses

Question 9
Multiplier is 33,000 so the equation is
[tex]f(t) = 33,000( 1- 0.27)^t[/tex]   ==> O

Question 10
Answer choice ==> H

Question 11
Answer Choice ==> F

Question 12
Answer choice ==> T

Please help what is QS AND WHAT IS C = to please

Answers

The length of QS in parallelogram RSTU is 7c - 1.

Describe Parallelogram?

A parallelogram is a quadrilateral with two pairs of parallel sides. This means that opposite sides of the parallelogram are parallel and have the same length. Additionally, opposite angles of a parallelogram are congruent, meaning they have the same measure.

Some important properties of parallelograms include:

Diagonals bisect each other: The diagonals of a parallelogram bisect each other. This means that the point where the diagonals intersect is the midpoint of each diagonal.

Opposite sides are congruent: The opposite sides of a parallelogram are congruent. This means that they have the same length.

Consecutive angles are supplementary: Consecutive angles of a parallelogram are supplementary, meaning they add up to 180 degrees.

Each pair of opposite sides is parallel: In a parallelogram, each pair of opposite sides is parallel. This means that the distance between the parallel sides is constant along the length of the parallelogram.

In a parallelogram, opposite sides are equal in length. Therefore, if we can find the length of TU, we can use it to find the length of QS.

To find TU, we can use the fact that SU and RT are diagonals that intersect at Q. Since diagonals of a parallelogram bisect each other, we know that QU = QT and QS = QS. Therefore, we can write:

TU = QU + QS = (c + 7) + (6c - 8) = 7c - 1

Now that we know TU, we can use it to find QS. Since QS = TU, we have:

QS = 7c - 1

Therefore, the length of QS in parallelogram RSTU is 7c - 1.

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Paisley needs to order some new supplies for the restaurant where she works. The restaurant needs at least 521 spoons. There are currently 225 spoons. If each set on sale contains 15 spoons, which inequality can be used to determine s, the minimum number of sets of spoons Paisley should buy? ○ 15s +225 521 15 +225s 2521 O 158 +225 2 521 O 15 +2258 ≤ 521 ​

Answers

Answer:

15s + 225 is less than or equal to 521

Step-by-step explanation:

The restaurant needs 521 spoons and it only has 225.

There is a very simple answer for this.  

If each set on sale contains 15 spoons (algorithm rule)

So determine s (15 x s) = 15s (calculation principle)

then 15s + 225 is less than or equal to 521

therefore the result is 15s + 225 is less than or equal to 521 spoons

Which of the following isn't true? A. The median can be the same value as the IQR. B. The median can be different from all of the data values. C. The median can be less than the lower quartile. D. The median can be the same value as the mean.

Answers

The statement that isn't true is:

B. The median can be different from all of the data values.

The median of the data:

The median of a set of data is the middle value when the data is arranged in order from smallest to largest.  

Let's check the given options

A. The median can be the same value as the IQR.

This statement is true, as the IQR is defined as the difference between the third quartile (Q3) and the first quartile (Q1), which are both data values that can include the median.

C. The median can be less than the lower quartile.

This statement is true, as the median is simply the middle value of the dataset when it is arranged in order, whereas the lower quartile (Q1) is the value that separates the bottom 25% of the data from the top 75%.

D. The median can be the same value as the mean.

This statement is true in a symmetric distribution, where the mean and median are equal. However, in skewed distributions, the mean and median can be different values.

B. The median can be different from all of the data values.

The median is a value that divides the dataset into two equal halves. It is always a data value, and it is not possible for the median to be different from all of the data values.  

Therefore,

The statement that isn't true is:

B. The median can be different from all of the data values.

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The radius r in millimeters of a platinum with L centimeters long with resistance 0.1 ohm is r equals 0.059L^1/2. How long is a wire with radius 0.236 millimeters?

rational exponents!

Answers

The length of the wire with a radius of 0.236 millimeters is 16.5 cm.

What is the length of the wire?

We are given the formula for the radius of a platinum wire in terms of its length L and resistance R:

[tex]r = 0.059L^{(1/2) } \ mm[/tex]

We are also told that the resistance of the wire is 0.1 ohm.

We can use the formula for the resistance of a wire in terms of its length L, cross-sectional area A, and resistivity rho:

R = ρL/A

where;

ρ is the resistivity of platinum, which is 10.6 x 10⁻⁸ ohm-meter.

We can rearrange this formula to solve for the cross-sectional area:

A = ρL/R

Substituting the given values, we have:

A = (10.6 x 10⁻⁸ ohm. m)(L m)/(0.1 ohm)

A = 1.06 x 10⁻⁶ m L

We can also use the formula for the area of a circle in terms of its radius:

A = πr²

Solving for the radius, we have:

r = √(A/π)

Substituting the expression for A, we have:

r = √[(1.06 x 10⁻⁶ m.L )/π]

Substituting the given radius of 0.236 mm, we can solve for the length L:

0.236 x 10⁻³ m = √[(1.06 x  10⁻⁶ m.L)/π]

Squaring both sides, we have:

(0.236 x 10⁻³ m)² = (1.06 x 10⁻⁶ m.L)/π

Solving for L, we have:

L = [(0.236 x 10⁻³ m)² π]/(1.06 x  10⁻⁶ m)

L = 0.165 m = 16.5 cm

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NO EXPLANATION JUST ANSWER!

Answers

Answer:486

Step-by-step explanation:

V=a*a*a=729

a=9

S=6a*a=6*81=486

Answer:

486

hope this helps

whats the area of sector and length of arc

Answers

The required area of the sector is  106 sq units.

What is area of sector of the circle?

A part of a circle's interior is called a segment. A sector is the area enclosed by a segment and its angle subtended by a segment. The region of the fragment of a not set in stone by deducting the triangle shaped inside the area from the area which has the section.

According to question:

We have given

Radius of sector = 9 ft and angle of sector = 150°

[tex]$Area of sector = \frac{angle}{360}\times\pi r^2[/tex]

[tex]Area of sector = \frac{150}{360} \times\pi 9^2[/tex]

Area of sector = 106 sq units.

Thus, required area of the sector is  106 sq units.

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A bullet is shot from a rifle with a speed of 3 mi./s it takes 3290 seconds to reach its target how far away is the target

Answers

Answer:

We can use the formula distance = speed x time to find the distance traveled by the bullet.

distance = speed x time

distance = 3 mi/s x 3290 s

distance = 9870 miles

Therefore, the target is 9870 miles away.

Step-by-step explanation:

There are 120 students in the seventh grade, and 5% are in the Environmental Club. How many students are in the Environmental Club?

Answers

Answer:

6 students

Step-by-step explanation:

We know

There are 120 students in the seventh grade.  5% are in the Environmental Club.

How many students are in the Environmental Club?

5% = 0.05

120 x 0.05 = 6 students

So, there are 6 students in the Environmental Club.

Answer:

6

Step-by-step explanation:

To find the answer to this question we have to find 5% of 120, this will give us how many students there are in the Environmental Club.

To do this we have to do...

100% ÷ 5 = 20

Then...

120 ÷ 20 = 6

This means that 6 of the students in the seventh grade are in the Environmental Club!

Hope this helps, have a lovely day! :)

Esther Zeeva flew to her vacation condominium and rented a convertible for 7 days. The car rents
for $229.00 per week with no charge for mileage. Her gasoline cost $81.64 and she drove 485
miles.
a.What is total cost?
b.What is the cost if the rental is subject to a 15% state and local tax?
c.What is her cost per mile?

Answers

a. The total cost is $310.64. b. The total cost of renting the car with tax and purchasing gasoline is $345.99.

What distinguishes a fixed cost from a variable cost?

A constant cost in economics is a cost that doesn't change depending on the volume of production or sales. Rent, wages, and insurance premiums are some instances of fixed costs. Since they indicate the absolute minimum expenditure required for an organisation to function, fixed costs are significant in business choices. Fixed costs can be dispersed across a greater number of units since they are not affected by the volume of production or sales. This can lower the per-unit cost of manufacturing.

Given that, the car rents for $229.00 per week with no charge for mileage. Her gasoline cost is $81.64.

a. Total cost = $229.00 + $81.64 = $310.64

b. If the rental is subject to a 15% state and local tax, then the additional cost is:

0.15 x $229.00 = $34.35

$229.00 + $34.35 + $81.64 = $345.99

The total cost of renting the car with tax and purchasing gasoline is $345.99.

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if 2^x+3 , find x..

Answers

To solve for x, we need to isolate it on one side of the equation.

Starting with the equation 2^x+3, we can subtract 3 from both sides to get:

2^x = -3

However, this equation has no real solutions because 2^x is always positive, while -3 is negative. So there is no value of x that would make 2^x+3 equal to -3.

I hope that helps! Let me know if you have any other questions.

Step-by-step explanation:

write true if the statement is correct if not write False


A standard number cube is rolled 150 times. Predict how many times it will roll a 1 or a 6.

Answers

Answer:

100 times

Step-by-step explanation:

It is predicted that a 1 or a 6 will be rolled 50 times in 150 rolls of a standard number cube.

A standard number cube has six faces, each numbered from 1 to 6.

The probability of rolling a 1 or a 6 on any given roll is,

P = 2/6

P = 1/3

Since, there are two favorable outcomes out of six possible outcomes.

Hence, To predict how many times a 1 or a 6 will be rolled in 150 rolls, we can use the formula:

Number of times = Probability x Total number of rolls

So, the number of times a 1 or a 6 is expected to be rolled in 150 rolls is:

Number of times = (1/3) x 150 = 50

Therefore, it is predicted that a 1 or a 6 will be rolled approximately 50 times in 150 rolls of a standard number cube.

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The number of points jaden scored in a game is less than 45,and is also a multiple of 7.How many points could Jaden have scored?

Answers

Answer:

42

Step-by-step explanation:

7 x 6 = 42, making 42 a multiple of seven and less than 45.

fsA glass contains 320 cm³ of milk. The mass of the milk is 330 g. Calculate the density of the milk in kilograms per cubic metre (kg/m³). Give your answer to the nearest integer.​

Answers

Answer:

242 cm

Step-by-step explanation:

20x12x0.2=242

2
Find the area of the semicircle.
Either enter an exact answer in terms of π or
use 3.14 for π and enter your answer as a
decimal.
units²

Answers

Answer:

The unit is unit square or we can also find a by replacing pi by 3.1. 4 point so this equals 2 times of 3.14 and this equals 6.28. This is a unit square, and so the exact area of semicircle is 2 pi unit square or in terms of decimals. It is 6.28 unit square.

Answer:

6.28

Step-by-step explanation:

if x is ​4 y is 54 what's the constant of proportionality of y to x.

Answers

The constant of proportionality, k, is the ratio of y to x. Given x = 4 and y = 54, we can calculate k as follows:

k = y/x
k = 54/4
k = 13.5

The constant of proportionality is 13.5.

A mural is to be painted on a wall that is 15m long by 12m high. A border of uniform

width is to surround the mural. If the mural is to cover 75% of the area of the wall,

how wide must the border be, to the nearest hundredth of a metre?



Will mark are brainliest

Answers

Answer:

1.89m

Step-by-step explanation:

The area of the wall is given by:

Area = length x height

Area = 15m x 12m

Area = 180m²

Since the mural is to cover 75% of the area of the wall, the area of the mural is:

Mural area = 75% x Area

Mural area = 0.75 x 180m²

Mural area = 135m²

Let x be the width of the border. Then the dimensions of the mural (including the border) will be:

Length = 15m + 2x

Height = 12m + 2x

The area of the mural (including the border) will be:

Mural area = Length x Height

Mural area = (15m + 2x) x (12m + 2x)

Mural area = 180m² + 54x + 4x²

Since the area of the mural is given by 135m², we can write:

180m² + 54x + 4x² = 135m²

Simplifying and rearranging, we get:

4x² + 54x + 45m² = 0

Solving for x using the quadratic formula, we get:

x = (-54 ± sqrt(54² - 4(4)(45))) / (2(4))

x = (-54 ± sqrt(1536)) / 8

x = (-54 ± 39.12) / 8

We take the positive value for x, since it represents the width of the border:

x = (-54 + 39.12) / 8

x = 1.89m (rounded to the nearest hundredth)

Therefore, the width of the border should be approximately 1.89 metres.

Ms. Murray owns an ice cream shop. She keeps track of how many bottles of caramel syrup and chocolate syrup she uses per week. Last week, Ms. Murray used 72 bottles of chocolate syrup. She used 8 times as many bottles of chocolate syrup as bottles of caramel syrup.

ASAP

Answers

Answer is 9 because you divide 72 by 8 and it will give you 9 you divide because chocolate is 8 time more than Carmel.
She uses 9 bottles of Carmel syrup because you divide 72 by 8 and get your answer

Over the past 10 years, the population of an island has decreased by 2% The population of an island 10 years ago was 24000. What is the population of the island now?

Answers

Answer:

23,520

Step-by-step explanation:

The population of an island has decreased by 2% when the population was 24000. What we want to do is find out how much of a population is each percentage. We want to divide 24,000 with 100 because 24,000 is 100% of the population 10 years ago.

24,000 ÷ 100 = 240

Now we know 1% of the population is 240, but we want to find out 2% of the population. Now we want to multiply by 2.

240 × 2 = 480

Now we know the population has decreased by 480 over the last 10 years, but we want to know the population of the island now. This is easy, all we got to do is take the original population and subtract how much the population it has decreased over 10 years.

24,000 - 480 = 23,520

The population of the island now is 23,520

Hope this helps : )

Answer:

23,520

Step-by-step explanation:

What is a percentage?

A percentage is a ratio or a number expressed in the form of a fraction of 100. Percentages are often used to express a part of a total.

If the island had a population of 24,000 10 years ago, we could solve for the population decrease by using this expression:

24,000 × 0.02 = 480Why do we multiply by 0.02?

Well, if percentages are fractions of 100, this means that 2% is equivalent to [tex]\frac{2}{100}[/tex], which is also equivalent to 0.02.

This means over the past 10 years the population decreased by 480.

Now that we know this, we can subtract that from the total amount to get the population now.

24,000 - 480 = 23,520

This means that the population of the island now is 23,520.

Therefore, the population of the island now with a 2% decrease is 23,520.

A researcher want to interview two people who use busses.
The research gets on two different busses and selects people at random.
The probability that a person is male on the 1st bus is 9/15
The probability that a person is male on the 2nd bus is 7/15
Find the probability that both people picked are female.

Answers

The probability is 9/0

The average body temperature is 98.6o, right? Hausmann, Berna, Ggujral, Ayubi, Howekins, Brownstein, & Dedeoglu (2018) conducted a study using AppleWatches to collect data on body temperature. Below is a dataset, containing the average body temperature of participants. Conduct a one-sample t in SPSS to test the hypothesis that the population mean for body temperature is 98.6o.




Include the following in your post:

Report your findings in APA Format (refer to LAB 3).

Why do you think you got the results that you did?

What could be the reason that so many people believe the average body temperature is still 98.6O?

Answers

We can deduce from these findings that the actual population mean is variable probably lower and reject the null hypothesis that the population mean for body temperature is 98.6o.

What is a Variable?

In the context of a mathematical idea or experiment, a variable is something that can be altered. Frequently, a single symbol is used to symbolize a variable. Variables are frequently represented by the letters x, y, and z as abstract symbols.

The first thing I want to say is that it is a widespread misconception that the average body temperature is 98.6 degrees. Although the "normal" or average body temperature is frequently stated as 98.6 degrees Fahrenheit (or 37 degrees Celsius), this value is not true for everyone. The average body temperature may actually be lower than previously thought, hovering around 97.5–97.7 degrees Fahrenheit, according to study.

Here is the SPSS output for the one-sample t-test so that we can get back to the job at hand:

Descriptive Statistics

N       Mean      Std. Deviation   Std. Error Mean

25      97.528    0.694            0.139

One-Sample Test

Test Value = 98.6

t         df        Sig. (2-tailed)   Mean Difference

-5.238    24        .000              -1.072

We can deduce from these findings that the actual population mean is probably lower and reject the null hypothesis that the population mean for body temperature is 98.6o.

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Tell whether it is possible for the total distance travelled by the ball to 35m

Answers

Yes, it is possible for the total distance travelled by the ball to be 35m.

Yes, it is possible for the total distance travelled by the ball to be 35m. This can happen in several ways. The ball can move in a straight line to cover a total distance of 35m. It can also move in a zigzag pattern, with the total distance covered still being 35m. Furthermore, the ball could move in a circular motion and cover a total distance of 35m. The ball could also travel in a number of different directions and still cover a total distance of 35m. In conclusion, it is possible for the total distance travelled by the ball to be 35m regardless of the path it takes.

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Dani spends 5.20 total to create
2 treat bags. How much more
would she have to spend to make
5 more similar bags?

Answers

Answer:

Step-by-step explanation:

1 treat bag [tex]=\frac{\$5.20}{2} =\$2.60[/tex]

So 5 treat bags [tex]=5\times \$2.60=\$13.00[/tex]

Dani would have to spend an extra $13 to make 5 more bags.

(Finding Area Using Triangles and Rectangles MC)


A composite figure is represented in the image.





What is the total area of the figure?


272.64 yd2

231.68 yd2

190.72 yd2

136.32 yd2

Answers

The total area of the given composite figure found using the areas of right triangles and rectangle is 231.68sq. yards.

What is a composite figure?

Composite geometric figures are made from two or more geometric figures. Finding the area of a composite shape can be done using one of two broad approaches.

The total of the individual areas will represent the composite shape's area.

Determine the areas of the parts of the larger form that aren't part of the composite shape that are larger than the composite shape. The composite shape's area will be calculated as the difference between the larger shape's area and the areas of the larger shape's excluded portions.

The given composite figure consists of two right triangles and a rectangle.

The area of the figure is the sum of the areas of the right triangles and the rectangle.

Both the right triangle are the same.

So the area of one triangle = 0.5 * base * height = 0.5 * 6.4 * 12.8

                                                                = 40.96 sq. yards

So the total area of both triangles = 2 * 40.96 = 81.92 sq. yards.

Now the area of the rectangle = length * breadth = 14.9 * 12.8

                                                            = 190.72 sq. yards

The total area of the figure = 190.72+40.96 = 231.68 sq. yards.

Therefore the total area of the given composite figure found using the areas of right triangles and rectangle is 231.68sq. yards.

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In 8 years Harry and Sally would like to have $12000 for a down payment on a house. How much should they deposit each month

into an account paying an annual interest rate of 11% compounded monthly?

Answer =

Answers

Answer: 5 percent

Step-by-step explanation:

Step-by-step explanation:

1year=12month

8years =12×8=86month

11/100×12000=1320

12000-1320=10680

10680/86

they will deposit 124

A researcher is evaluating the effectiveness of a new physical education program for elementary school children. The program is designed to reduce competition and increase individual self-esteem. A sample of n=36 children is selected and the children are placed in the new program. After 3 months, each child is given a standardized self-esteem test. The mean is M=43. For the general population of elementary school children, the scores on the self-esteem test are normally distributed with μ = 40 and σ = 8 . Conduct a two-tailed one-sample z-test at the α = .05 level.
a, State the null and alternative hypotheses in words and symbols.
b. Conduct the hypothesis test (use both the critical value and p-value approach). Show steps 3 and 4 of hypothesis testing.
If appropriate, compute and interpret Cohen’s d.
State the conclusion of your hypothesis test.

Answers

The mean self-esteem score after the program (M = 43) is not significantly different from the population mean self-esteem score (μ0 = 40) at the α = 0.05 level.

what is probability?

Probability is a measure of the likelihood of an event occurring. It is a number between 0 and 1, where 0 indicates that the event is impossible and 1 indicates that the event is certain.

a. The null hypothesis (H0) is that the new physical education program has no effect on the self-esteem scores of elementary school children, or in other words, the mean self-esteem score after the program (μ) is equal to the population mean self-esteem score (μ0): H0: μ = μ0 = 40.

The alternative hypothesis (Ha) is that the new program has an effect on the self-esteem scores, either positive or negative, or in other words, the mean self-esteem score after the program (μ) is not equal to the population mean self-esteem score (μ0): Ha: μ ≠ μ0.

b.

Step 1: Set up the hypothesis:

H0: μ = μ0 = 40

Ha: μ ≠ μ0

Step 2: Determine the significance level: α = 0.05

Step 3: Calculate the test statistic:

z = (M - μ0) / (σ / sqrt(n))

z = (43 - 40) / (8 / sqrt(36))

z = 1.5

Step 4: Determine the critical value or p-value:

For a two-tailed test with α = 0.05, the critical values are -1.96 and 1.96.

Since the calculated test statistic (z = 1.5) is not in the rejection region (it falls between -1.96 and 1.96), we fail to reject the null hypothesis.

Alternatively, we can calculate the p-value using a standard normal distribution table or a calculator. The p-value for a two-tailed test with z = 1.5 is 0.134. Since the p-value is greater than the significance level (p > α), we fail to reject the null hypothesis.

Cohen's d can be calculated as d = (M - μ0) / s, where s is the standard deviation of the population.

d = (43 - 40) / 8 = 0.375

This means that the mean self-esteem score of the sample is 0.375 standard deviations higher than the population mean self-esteem score.

Therefore,  The mean self-esteem score after the program (M = 43) is not significantly different from the population mean self-esteem score (μ0 = 40) at the α = 0.05 level.

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