7 groups because you need to find a number that 14 and 21 both go into. 7 works because 7*2 is 14 and 7*3 is 21 so 7 is the answer.
<h3>
Answer: Charlotte's speed in meter/second is 2.5m/s.</h3>
Step-by-step explanation:
Given speed of Charlotte in kilometer per hour = 9 km/h
We need to find the Charlotte's speed in meter per second.
We know 1 kilometer = 1000 meter
And 1 hour = 3600 seconds.
Plugging those values of km and hour in given speed in km/h, we get

.
Therefore,
<h3>Charlotte's speed in meter/second is 2.5m/s.</h3>
Answer:
-4.89
Step-by-step explanation:
Use the formula S = xr.
Note: I am using x in place of theta since there is no theta symbol on my keyboard.
We want to find S, the arc of the given circle.
S = (1 rad)(17 units/rad)
Notice that both rad cancel out.
Note: rad is radians for short.
S = 17 units