I’d appreciate the help this is my last few questions and this will save my grade since the first trimester of my school is done this week so I appreciate help

The null hypothesis is [tex]H_{0} : x=0.60[/tex] and alternative hypothesis is [tex]H_{1} :x\neq 0.60[/tex].

What is null and alternative hypothesis?

The null hypothesis is that the statement that researchers usually aim to disprove by performing tests of significance on the dataset. the most purpose of the null hypothesis is to help disprove a hypothesis or nullify it in favor of the alternate hypothesis that the researchers want to prove.

Let the percentage of readers who own a laptop be [tex]x.[/tex]

As newsletter publisher believes that [tex]60[/tex]`% of their readers own a laptop.

Therefore the null hypothesis is [tex]H_{0} : x=0.60[/tex] and alternative hypothesis is [tex]H_{1} :x\neq 0.60[/tex].

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A parameter that represents the amount of spread of individuals in the entire population of interest, which is typically unknown is the population mean.

The population mean can be determined by dividing the total number of values in the given data/population by the sum of all values in the data/population. The whole sum of the numbers is referred to as summation. The μ sign stands for the population mean.

The average calculated from the entire group, distribution, or population is known as the population mean. It is calculated by dividing the sum of all population variables by the total population of variables. Here, μ exists the population mean. ∑X exists the sum of all the observations in the population.

The population mean is a quantity that expresses the population's overall degree of individual variation, which is often unknown.

Therefore, the correct answer is option c) the population mean.

The complete question is:

a parameter that represents the amount of spread of individuals in the entire population of interest, which is typically unknown is group of answer choices the (true) standard error.

a) the sample standard deviation.

b) the estimated standard error.

c) the population mean.

d) the population standard deviation.

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Answer:

x = 42

see below for the angle measures.

Step-by-step explanation:

The angle marked 2x - 9 is sort of outside the triangle. It is called an exterior angle. The other two angles are called remote interior angles. "Remote" means that they are away from the exterior angle. When you have this set up, the two remote angles added together EQUAL the exterior one.

x+5 + 28 = 2x - 9

x + 33 = 2x - 9

Subtract x.

33 = x - 9

Add 9.

42 = x

So x = 42° which if you put that back into the expressions you can find the measures of the one remote interior angle (the other we know is 28°) and the exterior angle.

remote int angle:

x+5

= 42 + 5

= 47°

Exterior angle:

2x - 9

= 2(42) - 9

= 84 - 9

= 75°

(You can also then find the completely unmarked angle which is 180°- 75° which is 105°)

a) 10 men are selected at random, the probability their average height is above 72 inches is 0.0122.

b) Exactly one man is selected at random, the probability his average height is above 72 inches is 0.0122.

c) The 80th percentile for the average height of 10 men is 0.0097%.

d) The probability the average height of 10 men is between 70 and 71 inches is 0.13607.

Mean = 69.7 inches

Standard Deviation = 2.8 inches

a) Using normal distribution,

P(Y > 72) = P(Y - mean > 72 - mean)

P(Y > 72) = P((Y - mean ÷ SD) > (72 - mean ÷ SD))

P(Y > 72) = P(Z > (72 - mean ÷ SD))

P(Y > 72) = P(Z > (72 - 69.7 ÷ 2.8))

P(Y > 72) = P(Z > 2.25)

P(Y > 72) = 1 - P(Z  ≤ 2.25)

P(Y > 72) = 0.0122

b) P(man's height is above 72 inches) = 0.0122

c) (80 × 0.0122) ÷ 100

= 0.0097%

d) P( 70 > Y > 71) = P(70 - mean > Y - mean > 71 - mean)

P( 70 > Y > 71) = P((70 - mean ÷ SD) > (Y - mean ÷ SD) > (71 - mean ÷ SD))

P( 70 > Y > 71) = P((70 - mean ÷ SD) > Z > (71 - mean ÷ SD))

P( 70 > Y > 71) = P((70 - 69.7 ÷ 2.8) > Z > (71 - 69.7 ÷ 2.8))

P( 70 > Y > 71) = P(0.107 > Z > 0.464)

P( 70 > Y > 71) = 0.13607

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Horizontal leg = 6 units

Vertical leg is 4 units

Lets Represent the diagonal as line AB where A and B are the endpoints of the line segment

The coordinates of point A is ( 12,4)

The coordinates of point B is ( 6,0)

Slope = ( Y2 - Y1 ) / (X2 -X1) = (0 - 4) / ( 6 - 12) = -4 / -6 = 2/3

or simply.

slope = rise / run = vertical leg/ horizontal leg = 4/6 = 2/3

ANSWER

Horizontal leg = 6 units

Vertical leg is 4 units

Slope = 2/3

Answer:

16°F

Step-by-step explanation:

The temperature is −4°F. What will the temperature be if the temperature rises 20°F?

-4 + 20 = 16

so:

16°F

Answer:

35000

Step-by-step explanation:

So the number is 34582

now look at the hundreds

if it is 5 or over then we add a thousand to and subtract what ever the lower than thosand

and in this case it is 5 so we round UP

and now we have 35000

The answer is 35,000.

To round to the nearest thousand, we look at the last three digits. If these digits are 500 or greater, then we round the thousands digit up, and if they are less than 500, then we round down, keeping the thousand's digit the same.

Since in this case the last three digit consists of 582 which is greater than 500 so we round the thousands digit up i.e. from 4 to 5 in this case.

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A problem that consists of the multiplication of two fractions, and in which the simplified product is 4/5 is presented as follows;

[tex] \displaystyle {\frac{14}{15} \times \frac{6}{7} = \frac{4}{5} }[/tex]

A fraction consists of a number that is expressed as a quotient, such that the numerator is being divided by the value in the denominator.

The multiplication problem with two fractions that ha a simplified product of 4/5 is found as follows;

let the fractions be [tex] \displaystyle \frac{a}{b} [/tex] and [tex] \displaystyle \frac{c}{d} [/tex]

The multiplication product is therefore;

[tex] \displaystyle \frac{a}{b} \times \frac{c}{d} = \frac{a \cdot c}{b\cdot d} = \frac{4}{5}[/tex]

The lowest common multiple of a and c is 4, while the lowest common multiple of b and d is 5

Taking b as 15, and a as 14 and c as 6, while d is taken as 7, such that we have;

[tex] \displaystyle {\frac{14}{15} \times \frac{6}{7} =\frac{2 \times 7}{5 \times 3} \times \frac{2 \times 3}{7} = \frac{2 \times 2}{5 \times 1} =\frac{4}{5} }[/tex]

The multiplication problem is therefore;

[tex] \displaystyle {\frac{14}{15} \times \frac{6}{7} = \frac{4}{5} }[/tex]

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The slope of the line = rise of the line / run of the line = 2/2 = 1.

The slope (m) of a line can be determined by finding the ratio of the rise of the line to the run of the line, which is, the change in y over the change in x.

Referring to the image attached below, the blue line in the given graph shows the rise of the line while the red line shows the run of the line.

Therefore:

Rise of the line = 2 units

Run of the line = 2 units

Slope of the line (m) = rise/run = 2 units/2 units

Slope of the line (m) = 1

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The system of equations is:

To solve the system of equations by graphing, we need to make a graph of each equation. For that, we solve for y in both equations:

We have two equations to graph:

Comparing with the slope-intercept equation:

Where m is the slope and b is the y-intercept.

We can see that the slope of the two equations is m=-2, this means that the lines will have the same rate of change of -2 in y for every 1 in x. And one graph will cross the y-axis at 4 and the other at +6.

The graph of the two equations is shown in the following image:

Where the green line is the first equation, and the red line is the second equation.

There is no solution to this system of equations because the lines do not intersect each other.

Answer:

Step-by-step explanation:

We know that:

Apply it to the given to get:

We need to make h the subject of formula:

P(B) such that a and b are mutually exclusive is 0.23

A group of potential results from a specific experiment is an event. Events that do not take place at the same time are said to be mutually exclusive. For instance, if a coin is tossed, the outcome will either be head or tail; we cannot obtain both outcomes. Since they do not occur at the same time, such occurrences are also known as disjunct events.

Given: P(A) =0.28

P(AUB) = 0.51

We know,

P(AUB) = P(A) + P(B) - P(A∩B)

Since A and B are mutually exclusive events, they cannot happen together.

So, P(A∩B) = 0

Then,

P(AUB) = P(A) + P(B)

0.51 = 0.28+ P(B)

P(B) = 0.51 - 0.28 = 0.23.

Hence, P(B) = 0.23

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The probability of the marksman hitting the long-range target in 5 shots is 0.1429.

The geometric distribution is a Bernoulli experiment that predicts the likelihood of the first success after a certain number of failures. Negative-binomial and binomial distributions are two different forms of Bernoulli trials.

P = 0.268

x = 5

Use the geometric probability mass function below to calculate the probability:

P(X = x) = [tex](1 - P)^{(x-1)}[/tex]× P

P(X = x) = [tex](1 - 0.268)^{(3-1)}[/tex]× 0.268

P(X = x) = 0.1429

The probability that it takes 5 shots for the marksman to hit the long-range target is 0.1429.

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Answer:

HERE YOU GO HOPE IT HELPS

The new coordinates when we rotate the triangle counterclockwise is  (3, -1), (-2, -4),  (-5, 3).

Given,

The triangle with vertices;

(-3, 1) (2, 4) and (5, -3).

We have to find the new coordinates, when the triangle rotated 180 degrees counter clockwise;

Here,

The vertices;

(-3, 1) (2, 4) and (5, -3).

When we rotate 180 degree counter clockwise, the plane changes not the point.

That is,

(-3, 1) becomes (3, -1)

(2, 4) becomes (-2, -4)

(5, -3) becomes (-5, 3)

That is,

The new coordinates when we rotate the triangle counterclockwise is  (3, -1), (-2, -4),  (-5, 3).

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The new coordinates when we rotate the triangle counterclockwise is  (3, -1), (-2, -4),  (-5, 3).

Given,

The triangle with vertices;

(-3, 1) (2, 4) and (5, -3).

We have to find the new coordinates, when the triangle rotated 180 degrees counter clockwise;

Here,

The vertices;

(-3, 1) (2, 4) and (5, -3).

When we rotate 180 degree counter clockwise, the plane changes not the point.

That is,

(-3, 1) becomes (3, -1)

(2, 4) becomes (-2, -4)

(5, -3) becomes (-5, 3)

That is,

The new coordinates when we rotate the triangle counterclockwise is  (3, -1), (-2, -4),  (-5, 3).

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Answer:

V = 243 - 0.2s

Step-by-step explanation:

See attached document for questions 1 - 3.

5. Write a function rule to represent the situation:

The volume, V, remaining in a 243 ft3 pile of gravel

decreases by .2 ft3 with each shovelful, s, of gravel

spread in a walkway.

Volume Remaining (V) = Initial - Used

Volume Remaining (V) = 243 ft^3 - (0.2 ft^3/shovel)(s shovels)

V = 243 - 0.2s

6.  Tell whether the relation is a function. Explain your

reasoning.

{(-1, 7), (9, 4), (3, -2), (5, 3) , (9, 1)

This is not a function.  When x = 8, it results in more than one output.

7.  Pattern:

-2

-5

-8

-11

Each step decreases by 3

-14

-17

8.  

Given

Let's represent movies with M

Let's represent video with V

Solution

Using substitution method

I will solve your system by substitution.

Substitute for m in Equation 2

To clear the fraction multiply all through by 4

Separate the similar term

Substitute for v =5 in equation 3

The rental cost for each movie

The rental cost for each video game.

Based on your earnings from each of the part-time jobs, your fortnightly earnings would be $1,520

First, find out how much you earn in the first part-time job per week:
= (Number of days per week x Number of hours per day x Pay per hour)

= (3 x 6 x 20)

The find out how much you earn in the second part-time job:

= (Number of days per week x Number of hours per day x Pay per hour)

= (2 x 8 x 25)

In a fortnight (two weeks), your earnings would be:

= (2 weeks x (3 x 6 x 20)) + (2 weeks x (2 x 8 x 25))

= (2 x 360) + (2 x 400)

= 720 + 800

= $1,520

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Fortnightly earnings would be $1,520 based on previous earnings.

Two or more expressions with an Equal sign is called as Equation.

Given that there are two part time jobs.

For first part time

3 days per week I work for 6 hours each day and I earn $20.00 per hour

(3 x 6 x 20)

=360

Second part time

2 days per week, I earn $25.00 per hour, working an 8-hour day.

=2×25×8

=400

Now we need to calculate, the total fortnightly earnings.

= (2 weeks x360) + (2 weeks x 400)

= (2 x 360) + (2 x 400)

= 720 + 800

= $1,520

Hence $1520 is the fortnightly earnings.

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The correct option regarding the discounts is given as follows:

Store Z has the best sale price of $28.

The discount can be a percentage or an amount off, and the calculations are explained as follows:

Considering the discount plans and the original price of $35, the discounted prices in this problem are as follows:

Hence the correct statement is given as follows:

Store Z has the best sale price of $28.

The complete problem is:

Leo wants to buy some shoes. He found the shoes at three different stores for a price of $35. The stores are each having a sale:

Which statement about the sale price of these shoes is true?

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We are to determin if the following sequence are arithmetic and also fin their common difference if they are arithmetic.

(1) -3, -9, -27, -81, ................

This sequence is not an arithmetic sequence because theere is no common difference.

-9 - -3 = -27 - -9

-9 + 3 = -27 + 9

-6 ≠ -18

Therefore is not an arithmetic sequcence.

(2) 13, 17, 21, 25, ......................

This sequence is an arithmetic sequence.

It has a commdon difference of 4

17 - 13 = 21 - 17

4 = 4

Therefore, the sequence is an arithmetic sequence.

(3) -6, -2, 2, 6, .........................

This sequence is an arithmetic sequence.

It has a common difference of 4

-2 - -6 = 2 - -2

-2 + 6 = 2 + 2

4 = 4

Therefore, the sequence is an arithmetic sequence

If the equation y = -x, then the equation of the line that is parallel to the given line and passes through the point (-8,2) is y = -x-6

The equation is

y = -x

The slope intercept form

y = mx+b

Where m is the slope of the line

Comparing the slope intercept form and the given equation

Slope of the line m = -1

The line is passing through the points (-8,2)

The point slope form of the line

[tex](y-y_1)=m(x-x_1)[/tex]

Substitute the values in the equation

y-2 = -1(x-(-8))

y-2 = -1(x+8)

y-2 = -x-8

y = -x-8+2

y = -x-6

Hence, if the equation y = -x, then the equation of the line that is parallel to the given line and passes through the point (-8,2) is y = -x-6

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Answer:x=

−1/4y+ −3/4

Step-by-step explanation

The lengths of PA and PB are 3.1622 units if the point is P (0, 5).

The distance between two points is defined as the length of the line segment between two places representing their distance. Most significantly, segments that have the same length are referred to as congruent segments and the distance between two places is always positive.

The formula of the distance between two points exists P(x₁, y₁) and Q(x₂, y₂) is given by:

d (P, Q) = √ (x₂ – x₁)² + (y₂ – y₁) ².

The given points exists A(1, 2) and B(–3, 4).

The perpendicular bisector of AB will pass through the midpoint of AB.

Now the perpendicular bisector of AB will meet the Y-axis at P(0, y).

∴ AP = BP

Applying the distance formula, we get4

⇒ PA² = PB²

⇒ (x₁ – 0)² + (y₁ – y)² =  (x₂ – 0)² + (y₂ – y)²

⇒ (1 – 0)² + (2 – y)² =  (–3 – 0)² + (4 – y)²

After solving, we get y = 5

Therefore, the point is P (0, 5).

Now calculating the lengths of PA and PB

PA = √(1 – 0)² + (2 – 5)² = 3.1622

PB = √(-3 – 0)² + (4 – 5)² = 3.1622

Therefore, the lengths of PA and PB are 3.1622 units.

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Answer:8r+7-6r-5Combine the like terms=8r-6r+7-5Thenafter, simplify=2r+2

good luck

Step-by-step explanation:

Total 150 miles Jan drove than Ian.

Set the time Ian traveled as I, and set Han's speed as H.

Therefore, Jan's speed is H+5.

We get the following equation for how much Han is ahead of Ian;

H + 5I = 70.

The expression for how much Jan is ahead of Ian is; 2 (H + 5) + 10I

This simplifies to: 2H + 10 + 10I

However, this is just 2(H + 5I) + 10

Substitute, from the first equation, H + 5I as 70

Therefore, the answer is 140 + 10, which is 150.

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Two or more expressions with an Equal sign is called as Equation. x=-3 for function f(x)=−13.

Two or more expressions with an Equal sign is called as Equation.

We know that f(x) = -13. This means that:

f(x)= -13 = 2x-7

-13= 2x-7

Now we all need to do is solve this equation. First add 7 to both sides

-13 + 7= 2x

-6=2x

Divide by 2 on both sides.

-6 ÷ 2= x

x= -3

Hence x=-3 for function f(x)=−13.

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SOLUTION

The total amout of solution given is

From thequestion, 1/2 of the solution is used, then the amount of solution used for the experiment will be

Hence

The amount of solution the scientist use is 1/3 litres

The given calculation, -3+1-7- (-4)+10, can be rewritten as (1+4) so that it only involves addition and the result is 5.

According to the question,

We have the following expression:

-3+1-7- (-4)+10

Now, we have to remove all the negative signs from this expression.

So, we will first solve this expression to the step where we have only addition.

Now, we know that the multiplication of two negative integers is always positive.

-3+1-7+4+10

Adding the numbers with the negative sign:

-10+10+1+4

1+4

5

Hence, -3+1-7- (-4)+10 can be rewritten as (1+4) so that it only involves addition and the result is 5.

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