Answer:
the first one is a and the second one is 1750 revolutions per minute
Step-by-step explanation:
Answer:
a
Step-by-step explanation:
40 * 39 * 38 * 37 * 36 = 78,960,960
Therefore, the answer is A, 78,960,960.
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The answer is A. Jonna's brother's age is b so her age is b+4. The sum of their ages would be b+b+4 which equals 2b+4