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3 years ago

7

A person walks 1 mile every day for exercise, leaving her front porch at 9:00 am and returning to her front porch at 9:25 am. wh

at is the total displacement of her daily walk?
1 mile

0

25 minutes

none of the above

1 answer:

shusha [124]3 years ago

4 0

The answer would be 0

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If a car has tires with a diameter of 28 inches and is traveling at 55 mph, how fast are its tires spinning, in rpm^ prime s (re

Aleksandr-060686 [28]

Answer:

The tires are spinning at 660.49 revolutions per minute.

Step-by-step explanation:

The speed of the tires (v) is the same that the speed of the car, so to find the angular velocity of the tires we need to use the equation:

$\omega = \frac{v}{r}$

Where:

r: is the radius of the tires = d/2 = 28 inches/2 = 14 inches

$\omega = \frac{55 mph}{14 inches*\frac{1 mile}{63360 inches}} = 2.49 \cdot 10^{5} \frac{rad}{h}*\frac{1 h}{60 min}*\frac{1 rev}{2\pi rad} = 660.49 rpm$

Therefore, the tires are spinning at 660.49 revolutions per minute.

I hope it helps you!

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Marcus changed jobs after college. His old salary was $48000 per year. Now his new salary is 37% more per year. What is his new

Gennadij [26K]

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65,760

Step-by-step explanation:

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2 years ago

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nadya68 [22]

Answer: move right 4, move up 4

Step-by-step explanation:

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3 years ago

Is 31/50 greater than 1/2

KengaRu [80]

Yes 31/50 is greater than 1/2

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One day at St. Philip's High School, 1/2 of the pupils walked to school, 1/5 of the pupils came to school by bus, and the remai

Sergio [31]

The first thing to do is the make the denominators of the fractions the same.

5/10 of the pupils walked to school and 2/10 of the pupils came to school by bus.
5/10 + 2/10 = 7/10.
10/10 - 7/10 = 3/10.

<span>3/10 of the pupils came to school by car. </span>

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3 years ago