Find The Value of X:
A= 12
B= 16
C= 21
D= 24
2 answers:
Answer:
x = 21
Step-by-step explanation:
The 2 angles form a straight angle and are supplementary, thus
7x + 9 + 2x - 18 = 180, that is
9x - 9 = 180 ( add 9 to both sides )
9x = 189 ( divide both sides by 9 )
x = 21
Answer:
x = 21
Step-by-step explanation:
The 2 angles form a straight angle and are supplementary
7x + 9 + 2x - 18 = 180
9x - 9 = 180
9x = 189
x = 21
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