4(8)÷2(3)-10
explain please

The length and width of the rectangle are 21cm and 19cm.

Let the dimensions be represented by x and x+2.

The perimeter of a rectangle is:

= 2(length + width)

= 2(x + x+2) = 80

2x + 2x + 4 = 80

4x + 4 = 80

4x = 80 - 4

4x = 76

Divide

x = 76/4

x = 19

Therefore, the second number will be:

= 19 + 2 = 21

The numbers are 19 and 21.

Learn more about rectangles on:

brainly.com/question/25292087

#SPJ1

The value of the function f(-8) if f(x) = -x^2 +8x + 4 is f(-8) = -124

The equation of the function is given as

f(x) = -x^2 +8x + 4

The expression f(-8) means that x = -8

So, we have:

f(-8) = -(-8)^2 + 8(-8) + 4

Evaluate the exponent and the product

f(-8) = -64 - 64 + 4

Evaluate the sum and the difference

f(-8) = -124

Hence, the value of the function f(-8) if f(x) = -x^2 +8x + 4 is f(-8) = -124

Read more about functions at:

https://brainly.com/question/4025726

#SPJ1

The values compared to the greatest :

-2 1/4,-1 1/4,-1 3/4, 1/4

Comparing and ordering fractions is an essential part of developing a sense of numbers. This is also an essential skill to have when facing practical questions, such as:

"Would you like to have {\displaystyle {\frac{3}{4}}}{\frac{3}{4 }} d 'a pizza does not, or {\displaystyle {\frac{6}{7}}}{\frac{6}{7}} of a pizza?" There are several ways to compare and order fractions. If you have a calculator, the fastest way is to convert fractions to decimals. If you don't have a calculator, you can make comparisons easily by finding a common denominator or simply using your reasoning skills and what you already know about fractions.

In this way, the given fractions are compared from largest to smallest

-2 1/4,-1 1/4,-1 3/4, 1/4

Learn more about  Fractions here: https://brainly.com/question/11562149

#SPJ4

The answer choice which represents the length to swim diagonally and expressed to the nearest tenth as required in the task content is; Choice D; 14.2 meters.

It follows from the task content that the pool in discuss is rectangular and hence, the diagonal of the rectangle makes a right triangle with two perpendicular sides of the rectangle.

Hence, from Pythagoras theorem; we have;

hyp² = opp² + adj²

Hence,

D² = 9² + 11²

D² = 81 + 121

D² = 202

D = √202

D = 14.2 rounded to the nearest tenth.

Therefore, The answer choice which represents the length to swim diagonally and expressed to the nearest tenth as required in the task content is; 14.2 meters.

Read more on Pythagoras theorem;

https://brainly.com/question/343682

#SPJ1

The required solution is,

1. Gardner can put a maximum of 4 flowers in each row

2. At 150 minutes both the student will meet each other

In mathematics, it deals with numbers of operations according to the statements. There are four major arithmetic operators, addition, subtraction, multiplication and division,

Here,

1. For the planting of trees in even rows,

The greatest number of plants he can have in each row to keep the rose bushes and tulips in their own rows,

Taking HCF of number of plants 24 and 28

HCF of 24 and 28 is 4

Thus, Gardner can put a maximum of 4 flowers in each row.

2.

Time taken by the first student to complete one lap is 25 minutes,

So,

1 lap = 25 minute

1 minute = 1 / 25 lap

For the second student,

1 lap = 30 minute

1 minute = 1/30 lap

At time x minute both will meet each other,

x/25 -x/30 = 1

5x/750 = 1

x = 750/5

x = 150 minute

To learn more about arithmetic, visit:

https://brainly.com/question/4134994

#SPJ4

Answer:

4

Step-by-step explanation:

The expression contains FOUR terms, each with TWO factors.

Expression information: In algebra, the word term defined the single numbers(10), variables(y), and the product of the two (10y).

There are four terms:

A factor is a component of a product.

Therefore, the expression contains FOUR terms, each with TWO factors.

Know more about expressions here:

https://brainly.com/question/723406

#SPJ1

The correct question is given below:
Complete the statement to describe the expression ab+cd+ef+ghab+cd+ef+gha, b, plus, c, d, plus, e, f, plus, g, h. The expression consists of ----- terms, and each term contains ----- factors. Please fill in the blanks!

The change in the elevation from the bottom of the Ferris is 21.9 feet.

Elevation change refers to the difference in elevation between the beginning and end of your route.

Given that the distance travelled by Vivian just at bottom of the elevation is -9.6 feet.

The distance traveled by Vivian at the top of the elevation is 12.3 feet.

Vivian's shift in elevation would be expressed as the difference between the elevations at the bottom and top.

Let Ei be the initial elevation of -9.6 feet.

Ef = 12.3 feet as the final elevation

Change in elevation;

ΔE = Ef - Ei

ΔE = 12.3 - (-9.6)

ΔE = 12.3 + 9.6

ΔE = 21.9 feet

Therefore, the change in the elevation is found to be 21.9 feet.

To know more about the change in elevation, here

https://brainly.com/question/14632925

#SPJ9

Answer: 145 minutes ==> 3rd option

Step-by-step explanation:

2*(45-10)+3*(30-5)=

2*35+3*25=

70+75=145 minutes ==> 3rd option

Answer:

145

Step-by-step explanation:

45 × 2 = 90
10 × 2 = 20
90 - 20 = 70

70

30 × 3 = 90
5 × 3 = 15
90 - 15 = 75

75

70 + 75 = 145

145

Answer:

-2

Step-by-step explanation:

I did the math, trust me. Just input -2 into the x's and solve.

Answer:

D. x = -6

( 3x-6² - 30x-6 - 72 = 0 )

Step-by-step explanation:

So first you work out:

3x² = ( 3 x -6²) = -108

Then work out 30x = ( 30 x -6 ) = -180

-108 - -180 => 72

Then just do 72 - 72 =

Which would be 0! ☆*:.｡.o(≧▽≦)o.｡.:*☆

hope this helped! xx

Answer: Width= 29 meters & Length= 31 meters

Step-by-step explanation:

Let, width= x and Length= x+2

Perimeter= 120 meters

Now, 2{x+(x+2)}= 120

⇒ x= 29

Width= 29 meters

Length= 31 meters

Answer:

slope = 1

Step-by-step explanation:

the equation of a line in slope- intercept form is

y = mx + c ( m is the slope and c the y- intercept )

y = x - 31 ← is in slope- intercept form

with slope m = 1

Answer:

Do you have a picture or anything to show the problem? I am having a hard time understanding what you have wrote.

Step-by-step explanation:

Answer: -1.9696969696969696969696

Step-by-step explanation:

Answer:

Exact form: -65/33

Decimal form: -1.96

Mixed number: - 1 32/33

Step-by-step explanation:

Expression of the rate per minute at which air freshener dispenses sprays is equal to fraction 4 over 30.

As given,

The graph represents

x-axis: Time in minutes

y-axis: Number of sprays

Ordered pairs ( 30,4) ,(60, 8) ,( 90,12), and ( 120, 16)

Consider any two points ( 90,12) ,(120 , 16)

Expression of the rate per minute=( y₂ -y₁)/(x₂ -x₁)

                                                     =( 16 - 12)/(120 -90)

                                                     = 4/30

Therefore, expression of the rate per minute at which air freshener dispenses sprays is equal to fraction 4 over 30.

The complete question is :

The graph shows the number of sprays an automatic air freshener dispenses, y, in x minutes: A graph is shown. On the x-axis, the values are from 0 till 150 in increments of 30 for each grid line, and on the y-axis, the values are from 0 to 20 in increments of 4 for each grid line. The title of the graph on the x-axis is Time in minutes, and the title on the y-axis is Number of Sprays. A line is shown connecting ordered pairs 30, 4 and 60, 8 and 90, 12 and 120,16. The title for the graph is Dispense Rate. Which expression can be used to calculate the rate per minute at which the air freshener dispenses sprays?

fraction 4 over 30

fraction 30 over 4

fraction 30 over 16

fraction 16 over 30

Learn more about expression here

brainly.com/question/14083225

#SPJ4

The possible coordinates of point G on this number line are either -10 or 14.

A number line can be defined as a type of graph with a graduated straight line which contains both positive and negative numerical values that are placed at equal intervals along its length.

Given the following data:

E = 2.

EG = 12.

On this number line, the coordinate of EG is given by this mathematical expression:

EG = |E - G|

Substituting the given parameters into the expression, we have;

12 = |2 - G|

2 - G = ±12

G = 2 ± 12

Simplifying and evaluating the above expression, we have:

G = 2 + 12

G = 14.

OR

G = 2 - 12

G = -10

Therefore, the possible coordinates of point G on this number line are either -10 or 14.

Read more on number line here: https://brainly.com/question/17230085

#SPJ4

Complete Question:

On a number line, suppose point E has a coordinate of 2, and EG= 12. what are the possible coordinates of point G?

The revolution per minutes of the wheels rotation is 912 rev/ min

Given the parameters;

Convert the velocity

[tex]v = 65mph = 65 mil/h - (1609m/mil0/(3600s/h)[/tex]

v = 29. 1 m/s

Let's find the circumference

Circumference = 2 π r

radius = diameter/ 2 = 0. 6096 meters/ 2 = 0. 30 meters

Circumference= 2 × 3. 142 × 0. 30 = 1. 915

Number of revolutions = 29. 1/ 1. 915 = 15.2 rev/ sec

Let's convert to rev/ min

= 15. 2 × 60

= 912 rev/ min

Thus, the revolution per minutes of the wheels rotation is 912 rev/ min

Learn more about revolution here:

https://brainly.com/question/16533738

#SPJ4

(1) Option A (25 glee club members are randomly selected; 16 plan to go to a 4-year college.) would probably best represent the entire population of seniors.

(2) 416 seniors would be planning to attend a four-year university, by unitary method.

A single unit's value can be determined from the values of multiple units, and multiple units' values can be determined from the values of single units using the unitary method.

Now,

(1) Since Option A has a larger fraction ([tex]\frac{16}{25} > \frac{14}{25} > \frac{13}{25}[/tex]), it is probably the only one that best represents the majority of the people.

(2) As seen from Part (1),

Out of 650 seniors, around 416 will go to a 4-year college as, by unitary method:

For every 25 members, 16 plan to go to 4-year college

For every 650 members, [tex]\frac{16}{25}(650)=416[/tex] will plan to go to 4-year college.

To learn more about unitary method, refer to the link: https://brainly.com/question/24587372

#SPJ4

(COMPLETE QUESTION:

Lincoln High wants to estimate the number of seniors who plan to go to a 4-year college. 1) Which of the following surveys probably would best represent the entire population of seniors? a) 25 glee club members are randomly selected; 16 plan to go to a 4-year college. b) 25 honor roll students are randomly selected from the senior class; 14 plan to go to a 4-year college. c) 25 seniors are randomly selected; 13 plan to go to a 4-year college. 2) There are 650 seniors at Lincoln High. Using your answer from part (a), estimate the number of seniors who plan to go to a 4-year college.)

The cliff is 98.89 feet tall.

In the attached diagram, we can there are two triangles forming. Small triangle involves Juan and tent and larger triangle involves Juan and cliff. As per the known fact, tan theta = perpendicular ÷ base. So, tan theta will be common for both the triangles. Hence, relating the components of tan theta, of both the triangles.

Smaller triangle :

tan theta = 10/45

Larger triangle :

tan theta = h/(400 + 45)

tan theta = h/445

Relating both the triangles as follows -

10/45 = h/445

Performing cross multiplication

10×445 = h×45

h = 4450÷45

h = 98.89 feet

Hence, the cliff is 98.89 feet tall.

Learn more about calculations on tangent -

https://brainly.com/question/24680641

#SPJ4

Answer: x>10

Step-by-step explanation:

X-5 > 25-20

x-5+5>5+5

x>5+5

x>10

Answer:

[tex]4.4161 \times 10 ^{2} [/tex]

[tex]4.3 \times 1027 \times 10 { \\ \\ }^{2} [/tex]

[tex]4416.1 \times 10^{2} [/tex]

[tex]4.4161 \times 10 ^{2} [/tex]

The mean and variance of the lengths are 590. 50  and 0. 075 respectively

Given that the lengths are;

590.1,  590. 2, 590. 3, 590. 4, 590. 5, 590. 6, 590. 7 , 590. 8, 590. 9

Mean = sum of terms/ number of terms

Mean = 590.1 +  590. 2 + 590. 3 + 590. 4 + 590. 5 + 590. 6 + 590. 7 + 590. 8 + 590. 9/ 9

Find the sum of the numerator

Mean = 5314. 5/ 9

Mean = 590. 500

Variance = sum of the distances from the mean/ total number - 1

Variance = (590. 1 - 590. 5)² + (590. 2 - 590. 5)² +  (590. 3 - 590. 5)² +  (590. 4 - 590. 5)² +  (590. 5 - 590. 5)² +  (590. 6 - 590. 5)² +  (590. 7 - 590. 5)² +  (590. 8 - 590. 5)² +  (590. 9 - 590. 5)² ÷ 9 - 1

Variance = 0. 16 + 0. 09 + 0. 04 + 0. 01 + 0 + 0. 01 + 0. 04 + 0. 09 + 0. 016 ÷8

Variance = 0. 6/ 8

Variance = 0. 075

Thus, the mean and variance of the lengths are 590. 50  and 0. 075 respectively

Learn more about mean here:

https://brainly.com/question/20118982

#SPJ4

The lateral area of the regular octogonal prism is 528 square inches.  

Regular octogonal prisms has two regular octogonal base sides and eight rectangular lateral sides. In this problem we must look for the sum of the areas of the eight rectangular lateral sides, where each area is equal to the product of base side (l) and height (h), both in inches. Then,

A = l · h

A = (6 in) · (11 in)

A = 66 in²

A' = 8 · A

A' = 8 · (66 in²)

A' = 528 in²

The lateral area of the regular octogonal prism is 528 square inches.

To learn more on right prisms: https://brainly.com/question/3248292

#SPJ1

Answer:

my result is 0 = -7 It has no solutions though since it is a contradiction

Using complementary and supplementary angles, we have that:

c. The angles are complementary, hence the equation is 4x - 3 + 2x + 1 = 90 and the solution is x = 15.33.

d. The angles are supplementary, hence the equation is 43x + 16 + 110 = 180 and the solution is x = 18.

When the measures of two angles add to 90º, the angles are complementary.

This is the case in item c, hence:

4x - 3 + 2x + 1 = 90

6x = 92

x = 92/6

x = 15.33.

When the measures of two angles add to 180º, the angles are supplementary.

This is the case in item d, hence:

3x + 16 + 110 = 180.

3x = 54

x = 54/3

x = 18.

More can be learned about complementary and supplementary angles https://brainly.com/question/11161460

#SPJ1

As the angle is greater than 0° and less than 90°, then the angle ABC is acute. (Answer: A)

Herein we find the locations of the three vertices of the figure, of which we must determine the lengths of the two sides of the angle and determine the value of the angle by trigonometry:

BA = 5, BC = 2

θ = tan⁻¹ (BA / BC)

θ = tan⁻¹ (5 / 2)

θ ≈ 68.199°

As the angle is greater than 0° and less than 90°, then the angle ABC is acute. (Answer: A)

To learn more on acute angles: https://brainly.com/question/2761036

#SPJ1

The teacher should buy 10 gallons of ice cream.

To learn more about numbers, visit :

https://brainly.com/question/17429689

#SPJ9

Answer:

The answer is 10

Step-by-step explanation:

Answer:

440

Step-by-step explanation:

To do this problem, you have to follow the PEMDAS order.

Parentheses

Exponents

Multiplication

Division

Addition

Subtraction

We have to do 5x62 first, which is 310. Next, we multiply 6 and 33, which gets us 198. Then, we add 310 to 198, which is 508. Finally, we subtract 68 from 508 to get 440.

Hope this helps!

Have a wonderful day! :D

Quadrilateral b, is not a scaled copy of Quadrilateral a.

The side length of Quadrilateral a=2,3,5, and 6.

The side length of Quadrilateral b=4,5,8 and 10

Now comparing the Ratio of the Corresponding Sides of two quadrilaterals a and b

2/4 ≠ 5/8

3/5 ≠  6/10

Since the ratio of corresponding opposite sides is not equal. The two Quadrilateral are Not Similar.

So, We can say that Quadrilateral b, is not a scaled copy of Quadrilateral a.

For more information on quadrilaterals click on the link below:

https://brainly.com/question/23935806

#SPJ4

answer:

3/8

explanation:

(m/n)

count units from point a and b vertically, that is m.

count units from point a and b horizontally, that is n.