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3 years ago

Please please please help!!!!!!!

Mathematics

1 answer:

Phoenix [80]3 years ago

4 0

Answer:

x = 12

Step-by-step explanation:

The length of the midsegment is the average of the lengths of the other two.

5x -20 = ((4x +2) +(2x +6))/2

5x -20 = 3x +4 . . . . . . . . . . . . simplify

2x = 24 . . . . . . . . . . . . . . . . . . add 20-3x

x = 12 . . . . . . . . . . . . . . . . . . . . divide by 2

_____

<em>Check</em>

The three segment lengths are ...

top: 2·12 +6 = 30

midsegment: 5·12 -20 = 40

bottom: 4·12 +2 = 50

Indeed, 40 is the average of 30 and 50.

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