3 years ago

Helppp meee please!!

Mathematics

2 answers:

MariettaO [177]3 years ago

6 0

Vertical stretch ununinin

kolbaska11 [484]3 years ago

3 0

Vertical stretch

Hope this helps! :)

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The are of a shaded region is 118 ft squared. Which equation can be- used to find the value of X, in feet?

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Answer:

$x^2+ 18x -130=0$

Step-by-step explanation:

Given

See attachment for diagram

Required

The equation to find x

First, calculate the area of the big rectangle using:

$Area = Length * Width$

So:

$A_1 = (x + 6) * (3x - 2)$

The smaller rectangle

$A_2 = (x - 1) * (2x)$

The difference between this areas give the area of the shaded region.

So:

$A_1 - A_1 = 118$

$(x+6)*(3x-2) - (x-1)*2x = 118$

Open brackets

$3x^2 - 2x + 18x -12 -2x^2 +2x = 118$

Collect like terms

$3x^2 -2x^2- 2x +2x+ 18x -12 - 118=0$

$x^2+ 18x -130=0$

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