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3 years ago

Please help as soon as you can!

Mathematics

1 answer:

UkoKoshka [18]3 years ago

5 0

Answer:

Step-by-step explanation:

Perimeter is equal to twice the length plus twice the width

Perimeter = 2L + 2W factoring out the 2

Perimeter = 2(L + W) L = (8x + 5 - 3x) W = (4x - 1)

first I would simplify L collecting the terms of x

L = (5x + 5)

plug in to L and W

Perimeter = 2 (( 5x + 5 ) + ( 4x - 1 )) L = (8x + 5 - 3x) W = (4x - 1)

Perimeter = 2 ( 5x + 4x + 5 -1 ) collect like terms

Perimeter = 2 ( 9x +4) 2 times the 9 and 4

Perimeter = 18x + 8 SOLVE for x

Perimeter - 8 = 18x + 8 -8

Perimeter - 8 = 18x

(Perimeter - 8) / 18 = 18x / 18

(Perimeter - 8) / 18 = x

remember the Perimeter equals 88

(88 - 8) / 18 = x units

4.444444444 units = x

This seems like an odd number so let's it

Perimeter = 2 (( 5x + 5 ) + ( 4x - 1 ))

Perimeter = 2 (( 5(4.444) + 5 ) + ( 4(4.444) - 1 )) = 87.9952

close enough with the rounding off error

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5x+5y=-30 find the x and y intercept

Masja [62]

<em>The x and y intercept of 5x + 5y = -30 are (-6, 0) and (0, -6) respectively.</em>

<h2 /><h2>Explanation:</h2>

The Standard Form of the equation of a line is given by:

$Ax+By=C \\ \\ A,B,C \ Real \ Constants \ and \ A>0$

So:

$5x+5y=-30$

is written in Standard Form. The x and y intercepts are:

$x-intercept: \ (x,0) \\ \\ y-intercept: \ (0,y)$

So:

FOR X-INTERCEPT:

$Let's \ set: \\ y=0 \\ \\ 5x+5(0)=-30 \\ \\ Isolating \ x: \\ \\ 5x=-30 \\ \\ x=-\frac{30}{5} \\ \\ \boxed{x=-6}$

FOR Y-INTERCEPT:

$Let's \ set: \\ x=0 \\ \\ 5(0)+5y=-30 \\ \\ Isolating \ x: \\ \\ 5y=-30 \\ \\ y=-\frac{30}{5} \\ \\ \boxed{y=-6}$

Finally,<em> the x and y intercept of 5x + 5y = -30 are (-6, 0) and (0, -6) respectively.</em>

<h2>Learn more:</h2>

Parallel lines: brainly.com/question/12169569

#LearnWithBrainly

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