I really need help with number 5 find the value of x that makes abcd a parallelogram.

JJS asked Jun 9, 2023

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JJS asked Jun 9, 2023

by JJS

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22 votes

Answer:

x = 64.5

Step-by-step explanation:

Consecutive angles of a parallelogram are supplementary, that is, they sum up to 180 degrees

$\begin{gathered} (3x-98)+(x+20)=180 \\ \\ 3x+x-98+20=180 \\ \\ 4x-78=180 \\ \\ 4x=180+78 \\ \\ 4x=258 \\ \\ x=(258)/(4)=64.5 \end{gathered}$

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