lilxems2 lilxems2
  • 25-07-2019
  • Mathematics
contestada

assume that y varies inversely with x. if y=7 when x=-2, find y when x=7

Respuesta :

wegnerkolmp2741o
wegnerkolmp2741o wegnerkolmp2741o
  • 26-07-2019

Answer:

y=-2

Step-by-step explanation:

The formula for inverse variation is

xy =k

if y=7 when x=-2, we can substitute these numbers in to find k

(-2)(7) =k

-14 =k

The equation becomes

xy = -14

Let x =7

7y = -14

Divide each side by 7

7y/7 = -14/7

y = -2

Answer Link

Otras preguntas

Urgent!!!!!! 20 points!!!!!! how are the speed, wavelength and frequency of a wave related
Double a number increased by one is seventeen
What is a drawback of getting college credit in high school? A. having highly qualified teachers B. having classes that encourage discussion C. having more
What is the x-value of the solution to the system of equations? 5x + 4y = 8 2x – 3y = 17 oooo
which of the following is not a possible energy conversion for electricity? a. mechanical b. chemical c. biological d. thermal please help me
When should you write a draft of your summary? A. immediately after reading the text for the first time B. before coding the text C. before re-reading sections
Is 7/12 close to 0, 1/2 OR 1
The success of the triangle trade system depended on increasing what?
Red and green beetles from a forest migrate to grasslands. In the new environment, green beetles are able to protect themselves better from predators through ca
which of the following is not a base? A. bleach B.toothpaste C.shampoo D.orange