wendymtz2004
25.07.2020 •
Mathematics
Claire is cycling at a speed of 12 miles per hour. Han is cycling at a speed of 8 miles per hour. If they start at the same position, chosen at zero, and bike in straight, opposite directions, what will the distance between them be after 45 minutes?
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Ответ:
15 miles
Step-by-step explanation:
Speed is the ratio of distance traveled to the time taken to reach the distance. The formula for speed is given by:
Speed = distance / time
Distance = speed × time
Claire is cycling at a speed of 12 miles per hour. Han is cycling at a speed of 8 miles per hour. At time t = 45 minutes = 45/ 60 hour = 0.75 hour, the distance traveled by Claire and Han is given as:
For Claire:
Distance = speed × time = 12 miles / hour × 0.75 hour = 9 miles
For Han:
Distance = speed × time = 8 miles / hour × 0.75 hour = 6 miles
Since both Han and Claire are traveling in opposite directions, the distance between them after 45 minutes = 9 miles + 6 miles = 15 miles
Ответ:
8 week
Step-by-step explanation:
= $ 433 − $ 145 = $ 288
= $ 36 for 1 week
$ 288 for x weeks
x = 288 divide 36
x = 8 weeks