Answer:
24
Step-by-step explanation:
18/n = 21/28 You can cancel, but calculators make that unnecessary. Cross multiply
21n = 18 * 28
21n = 504 Divide by 21
n = 504 / 21
n = 24
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12/16 = n / 64 Cross Multiply
16n = 12 * 64
16n = 768 Divide by 16
n = 768/16
n = 48
Answer: B
Step-by-step explanation: It B even tho there is not a B
4.8 * 0 is the scientific notation
15.78 is the answer to the qustion that you have asked.
