lilbaby1433
17.07.2019 •
Mathematics
Amotorcycle and a car leave an intersection at the same time. the motorcycle heads north at an average speed of 20 miles per hour, while the car heads east at an average speed of 48 miles per hour. find an expression for their distance apart in miles at the end of t hours.
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Ответ:
d stands for distance, v stands for speed, t stands for time
The car
d = 48 × t
d = 48t
The motorcycle
d = 20 × t
d = 20t
At the end of t hours, the car is 48t miles (east) from the start point and the motorcycle is 20t miles (north) from the start point.
Second, determine the distance between 48t miles at east and 20t miles at north using pythagoras
distance =
distance =
distance =
distance = 52t
The expression for their distance apart at the end of t hours is 52t
Ответ:
Step-by-step explanation:
first you have to rearrange the question.
then you have to divide everything by 2 to make it easier.
then factories it.
answer =