Question

Evaluate 10a + 7 if a = 1/5.

10a + 7 = 10(?/?)+7

=?+7
=?

Replace a with 1/5.
Multiply 10 and 1/5.
Add.

Answer 1

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Explanation:

Answer 2

9

Explanation:

We know that a=1/5. Therefore, we can substitute 1/5 in for a into the expression.

10a + 7

10(1/5)+7 Multiply 1/5 and 10

2+7 Add 2 and 7

9