Lời Giải
Kira went for a drive in her new car. She drove for 37.5 miles at a speed of 28 mph. For how many hours did she drive?
Lời Giải
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Translate the problem into an equation:
Giải
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find the bán kính of a sphere having a volume of 84 in^3Kira went for a drive in her new car. She drove for 142.5 miles at a speed of 100 mph. For how many hours did she drive?Alvin is 9 years older than Elga. The sum of their ages is 75. What is Elga's age?Lauren's age is half of Joe's age. Emma is four years older than Joe. The sum of Lauren, Emma, and Joe's age is 234. How old is Emma?4 times a number, plus 9