The volume of a spherical balloon is increasing at the rate of 25cm^3/min, how fast is the radius increasing when the radius is equal to 20cm?

Answers

Answer 1

Answer:

Answer:

V＝4/3πr^3；S＝4πr^10；dV/dt＝dV/dr×dr/dt＝4πr^10×dr/dt；dS/dt＝dS/dr×dr/dt＝8πr×dr/dt＝2/r×dV/dt；当r＝10cm时,dS/dt＝50cm^2/s

Step-by-step explanation:

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the area of a rectangular ice skating rink is 900 square yards if the length of the rink is 100 yards with is the width of the rink

Answers

Area/Length=Width
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Can someone please help me?I would like to know why C is correct. Please show your work

Brainliest + points

Answers

Answer:

C is correct because if she pays 700 dollars for a car payment her amount of money to spent money ratio will be above the recommended amount of spent money percentage to amount of money ratio, therefore meaning she will be in credit overload.

Step-by-step explanation:

Divide 25 by 8 write the quotient with a fraction

Answers

3 1/8 or 3.125 or 25/8

Graph the line that represents this equation: 25 PTS

Answers

Answer:

y=1/2x.

Step-by-step explanation:

First, you would like to distrubte the fraction to make it become: 1/2x+1 on the right side. Second you would like to put it in y=mx+b form. Isolate y to y=1/2x. Then, you can start on (0,0), the orgin and they go up 1 and over 2 right.

Joe drives 125 miles in 212 hours. At the same rate, how far will he be able to travel in 6 hours?

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first you would divide mile by hours, so: 125/212 which gives you .59 miles per hour so then you would multiply .59 by 6 which gives you 3.45 miles per hour. Hope it helps!!

Hank estimated width of the door to his classroom in feet. what is a reasonable estimate?

Answers

The measurements of an average door are 80 inches by 36 inches. In this measurement, the length is 80 inches and the width is 36 inches. If Hank estimates the width of the door of his classroom, he will then most likely estimate it at 36 inches. To convert this into feet, you must know that 12 inches make 1 foot. So, 36 inches divided by 12 inches will convert the measurement to feet: 36/12 = 3. Thus, the answer is 3 feet.

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