Answer:
The radius of the balloon is increasing at a rate of 4 feet per minute.
Step-by-step explanation:
We are given the following in the question:

Volume of sphere is given by

where r is the radius of the balloon.
Instant radius, r = 2 ft
Rate of change of volume =

Putting values, we get,

Thus, the radius of the balloon is increasing at a rate of 4 feet per minute.
Answer:
45
Step-by-step explanation:
the 90 degree angle is subtracted by 45 and the answer is.
Answer:
∠RUP is 135°
Step-by-step explanation:
First find the angle of QUR
QUS is 90 so you just subtract 45 from 90 and you get 45
QUP is also 90. Add 45 to it this time: 135
40 bikes. 120 times 40 equals 4800 divided by 2 because they pay for half the bike will be 2400
Answer:
B (1,0)
Step-by-step explanation: