Verified Answer :

-9 * (-15) = 135
it's positive 135 because when you have negative time a negative it's always positive.

EspionageGirl

Answer:

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135

Step-by-step explanation:

The product of something is what the outcome is when you multiply the numbers together. Since 9 and 15 are both negatives, they cancel each other out and become positives. Then we just multiply 9 and 15. That gives us 135.

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