2 years ago

Find The Value of X: A= 12 B= 16 C= 21 D= 24

Mathematics

2 answers:

Dmitriy789 [7]2 years ago

5 0

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

neonofarm [45]2 years ago

4 0

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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