Answer:
21
Step-by-step explanation:
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The answer to your question is: letter C
Multiplicative inverse is a pair of numbers which product gives 1.
Then
x will be our number
-9x = 1
x = - 1/9
because
-9 x = = 1
The answer to your question is -10
Circumference : 18.84 inches
Radius: 3 inches