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3 years ago

EASY 20 points! Please Solve this Algebra 1 question.

Mathematics

2 answers:

Andrei [34K]3 years ago

5 0

Let W = width of the pool

area of back yard = (3W +5)^2

area of pool = W(W+10)

area around pool = (3W+5)^2 - W(W+10)

enyata [817]3 years ago

4 0

length of pool, L = 10 + W
width of pool, W

pool area = W(10+W)

backyard is square shaped.. sides are equal
backyard side length, S = 5 + 3W

Area backyard = (5+3W)(5+3W)
subtract pool area

Area surrounding pool
= (5+3W)(5+3W) - W(10+W)
simplify the expression, foil
= 25 + 30W + 9W^2 - 10W - W^2
combine like terms
A = 8W^2 + 20W + 25

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Answer:

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Step-by-step explanation:

Let

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y ----> the monthly cost in dollars

we have the ordered pairs

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step 1

Find the slope

The formula to calculate the slope between two points is equal to

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substitute the values

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$m=\frac{4.32}{48}$

$m=\$0.09\ per\ minute$

step 2

Find the linear equation in point slope form

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we have

$m=0.09\\(x1,y1)=(42,18.15)$

substitute

$y-18.15=0.09(x-42)$

step 3

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For x=45 min

substitute the value of x in the linear equation and solve for y

$y-18.15=0.09(45-42)$

$y-18.15=0.09(3)$

$y-18.15=0.27$

$y=0.27+18.15$

$y=18.42$

therefore

The monthly cost for 45 minutes is $18.42

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3 years ago

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3 years ago

What is the answer to a/9 =−4

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Multiply all the terms by the same value to eliminate fraction denominators
a/9=-4
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The dot means multiplication
Then simplify to simplify cancel the multiplied terms that are in the denominator
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Multiply the number
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