eblack eblack
  • 28-05-2014
  • Mathematics
contestada

If y varies directly as x^2 and y=12 when x=2, find y when x=5

Respuesta :

kate200468
kate200468 kate200468
  • 28-05-2014
[tex]y=ax^2\\\\y=12\ \ \ and\ \ \ x=2\ \ \ \Rightarrow\ \ \ 12=a\cdot 2^2\ \ \ \Rightarrow\ \ \ a= \frac{4}{12}= \frac{1}{3} \\\\y=\frac{1}{3} x^2\\\\x=5\ \ \ \Rightarrow\ \ \ y=\frac{1}{3} \cdot5^2=\frac{25}{3} =8\frac{1}{3} [/tex]
Answer Link

Otras preguntas

for a certain bathub, it takes the hot water faucet 3 times as long to fill the tub as it does the cold water faucet. left on together, the two faucets take 6 m
Why did soviet premier leonid brezhnev invite president richard nixon to visit mmoscow?
How did the addition of many more roads and highways affect the U.S.?
Kaiden deposited $6200 into a savings account for which interest is compounded weekly at a rate of 2.77%. How much interest will he earn after 8 years? A. $1537
ran and his family paid $56.00 for a resraurant meal. they want to leave a tip of 15% for their server. how much should they leave?
Allied heads of government at the peace talks included all of the following except: a Lloyd b Wilson c Clemenceau d Orlando e Wilhelm
In a paragraph, explain why there were growing tensions between the Romans and the early Christians?
how do u get smelly shoe stink out of locker ( this is advice for a friend who needs to know)
any questions 1-4 please help me
Explain which type of abuse this scenario represents. Situation: Two women who are friends operate a daycare center in one woman’s home. They frequently accept