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Kaylis [27]
3 years ago
6

HELP ME PLEASE IM TRYING TO GET MY GRADE UP Ms. Riley needs to paint an border on her rectangular living room wall. The side len

gth of her wall is 3x-2 and the width is 24x+10 find the perimeter of her wall in terms of x
A. 54x+16
B. 72x^2-20
C. 72x^2-18x-20
D. 27x^2 - 20x + 8
Mathematics
1 answer:
melisa1 [442]3 years ago
7 0

Answer:

A. 54x + 16

Step-by-step explanation:

Substitute the variable and find the answer to the equation :))

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Answer:

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Step-by-step explanation:

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Which represents the solution(s) of the system of equations, y = –x2 + 6x + 16 and y = –4x + 37? Determine the solution set alge
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Answer: c.(3, 25) and (7, 9)

y = –x^2 + 6x + 16 and y = –4x + 37

Plug in -4x+37 for y in first equation . It becomes

-x^2 + 6x + 16= -4x+37

Combine like terms. add 4x  and subtract 37 on both sides

-x^2 + 10x - 21=0

Divide the whole equation by -1 to remove negative sign from -x^2

x^2 - 10x + 21=0

Now factor the left hand side

(x-7)(x-3) = 0

x-7 =0  and x-3=0

x= 7  and x=3

Now we find out y using y = –4x + 37

when  x= 7 , then y=-4(7) +37 = 9

when x= 3, then y=-4(3) + 37 = 25

We write solution set as (x,y)

(7,9)  and (3,25) is our solution set


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