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irina [24]
4 years ago
13

I need answer fast! Thanks!

Mathematics
1 answer:
lora16 [44]4 years ago
3 0

Answer:

see below

Step-by-step explanation:

The perimeter is the sum of all the sides

A + B+ C+ D + E = 190

x+5  + x+10 + -5(x-20) + 6x-10+ 2x+4(20-x) = 190

Distribute

x+5 + x+10 -5x+100 +6x-10 +2x +80 -4x = 190

Combine like terms

x + x -5x-4x+6x +2x +80+10+100 -10+5  = 190

x +185 = 190

Subtract 185 from each side

x+185-185 = 190-185

x = 5

Side A = x+5 =5+5 =10

Side B = x+10 = 5+10 =15

Side C = -5(x-20) = -5(5-20) = -5(-15) = 75

Side D = 6x-10 = 6(5) -10 =30-10 = 20

Side E = 2x+4(20-x) = 2*5 +4(20-5) = 10+4(15) = 70

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Step-by-step explanation:

midpoint formula:

{ (x2 + x1) /2 } for x-coordinate of the midpoint

<em>and</em>

{ (y2 + y1) /2 } for y-coordinate of the midpoint

The point E is located at (-2,3)

The point F is located at (1,6)

-----------------------------------------------------------------

{ (x2 + x1) /2 } for x-coordinate of the midpoint

{ [ (-2) + (1) ] /2 } = (-2+1) /2 = -1/2 or -0.5

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{ (y2 + y1) /2 } for y-coordinate of the midpoint

{ [ (3) + (6) ] /2 } = (3+6) /2 = 9/2 or 4.5

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ANSWER: (-0.5, 4.5) or (1/2, 9/2)

<em>Seriously, dude. You got the right answer. </em>

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