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04-12-2020
Mathematics

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ASAP!!! 135 5 - 4 (3x + 31) (7x - 64) (4x + 15) (6x - 8) 120° Q. Solve for X.

ASAP 135 5 4 3x 31 7x 64 4x 15 6x 8 120 Q Solve for X class=

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04-12-2020

Answer:

X=3

Step-by-step explanation:

this is a heptagon (7sides) so all the angles must add to 900 degrees

you have to add them all up

135+(5x-4)+(3x+31)+(4x+15)+(6x-8)+120+(7x-64)=900

25x+225=900

25x+225-225=900

25x=675

25x/25=675/25

x=3

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