ruhulchoudhury040 ruhulchoudhury040
  • 17-03-2019
  • Mathematics
contestada

M is directly proportional to r2.when r=2,m=14.Work out the value of r when m =224

Respuesta :

PeachyLove
PeachyLove PeachyLove
  • 17-03-2019

♫ - - - - - - - - - - - - - - - ~Hello There!~ - - - - - - - - - - - - - - - ♫

➷ M = k x r^2

Substitute in the values:

14 = k x 2^2

Divide both sides by 2^2 to find k:

k = 3.5

Substitute the new values in:

224 = 3.5 x r^2

Divide both sides by 3.5 to find r^2

r^2 = 64

Square root it:

r = 8

✽

➶ Hope This Helps You!

➶ Good Luck (:

➶ Have A Great Day ^-^

↬ ʜᴀɴɴᴀʜ ♡

Answer Link

Otras preguntas

What did the dog do to lead the farmer to the hidden gold?
Monroe helped Thomas Jefferson in the A. War of 1812. B. Louisiana Purchase. C. Rush-Bagot Treaty. D. Declaration of Independence.
7.5% of 140 is what number?
MULTIPLE CHOICE - Choose the letter for the type of law that represents the statement, or answers the question. 6. Which case stated that the Supreme Court had
This cylinder was dropped on earth in a graduated cylinder containing 800ml of water. The water rises 200 ml. Calculate its volume
Please help as soon as possible
The half life of a radioactive kind of cadmium is 14 years. How much will be left after 28 years, if you start with 72 grams of it?
Please help although I think I have the awnser but correct me if I’m wrong
ANWSER THE TWO BOTTEM
list three ways in which we pollute the coastal environment.