..Answer:
Step-by-step explanation:
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I just got this question. I think the answer is 5.
Answer:
r = 9
Step-by-step explanation:
cross multiply
9 * r = 81
9r = 81
divide both sides by 9
r= 81/9
r = 9
Answer:
18000
Step-by-step explanation:
Answer:
12.5
Step-by-step explanation:i did that problem before
