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3 years ago

Work out the value of x.

Mathematics

1 answer:

torisob [31]3 years ago

4 0

Answer:

x = 15

Step-by-step explanation:

180 = 90 +4x +2x

90 = 6x

15=x

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Paula walked ¾ mile in 10 minutes. Hannah walked ⅘ mile in 15 minutes. What was the difference in their speeds, in miles per hou

lianna [129]

Answer:

1 3/10 (SORRY IF ThIS IS WRONG)

Step-by-step explanation:

3/4 mile x 6 = 4 1/2

(we multiply by 6 because to get 60 minutes/1 hour you need to multiply 10 minutes by 6)

60/15=4

(we will multiply by 4 because we need that to get 1 hour)

4/5 x 4 = 3 1/5

4 1/2 - 3 1/5 = 4 5/10 - 3 2/10 (we do that so we can subtract easier)

4 5/10 - 3 2/10 = 1 3/10

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3 years ago

Find a formula for the described function. A rectangle has perimeter 8 m. Express the area A of the rectangle as a function of t

Maksim231197 [3]

Answer:

$A(L) = 4L - L^2$

Step-by-step explanation:

Given

Perimeter = 8m

Required

Determine its area as a function of length

Represent Length and Width with L and W, respectively;

Perimeter (P) is calculated as thus;

$P = 2(L + W)$

Substitute 8 for P

$8 = 2(L + W)$

Divide both sides by 2

$4 = L + W$

Make W the subject of formula

$W = 4 - L$

Area (A) of a rectangle is calculated as thus:

$A = L * W$

Substitute 4 - L for W

$A = L * (4 - L)$

Open bracket

$A = 4L - L^2$

Represent as a function

$A(L) = 4L - L^2$

6 0

3 years ago

The cost of 3 large candles and 5 small candles is $6.40. the cost of 4 large candles and 6 small candles is $7.50. which pair o

valentinak56 [21]

Answer:

t=large candles s=small candles

Step-by-step explanation:

3t + 5s = 6.40

4t + 6s = 7.50

This is your system of equations.

5 0

3 years ago

THE QUESTION IS IN THE PICTURE PLEASE HELP

andrezito [222]

A is the answer famm follow me on insatgram babygirl_brie_

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4 years ago

The rec where katie works as a lifeguard has a rectangular diving pool. the diving pool is 4 meters deep and has a floor area of

wlad13 [49]

Answer:

The volume of the diving pool is $1400m^{3}$

Step-by-step explanation:

The volume of a rectangular pool is given by the following formula:

$V = S_{b}*h$

In which $S_{b}$ is the floor's area and h is the height.

The diving pool is 4 meters deep and has a floor area of 350 square meters.

This means that $h = 4m, S_{b} = 350m^{2}$

$V = S_{b}*h = 350m^{2}*4m = 1400m^{3}$

The volume of the diving pool is $1400m^{3}$

5 0

3 years ago