shandobson25 shandobson25
  • 01-07-2021
  • Mathematics
contestada

Y varies directly with the square of x. If y=40 when x=4, find y when x=7

Respuesta :

wegnerkolmp2741o
wegnerkolmp2741o wegnerkolmp2741o
  • 01-07-2021

Answer:

y = 245/2

Step-by-step explanation:

y = k x^2

Where k is the constant of variation

Let y= 40 and x=4

40 = k *(4)^2

40 = k*16

40/16 = k

5/2 = k

y =5/2 x^2

Let x=7

y = 5/2 (7)^2

y = 5/2(49)

y = 245/2

Answer Link

Otras preguntas

What factors shaped American imperialism?
Find the slope of the line described by each equation: 8x+2y=96
A somatic cell of the common octopus (Octopus vulgaris) has 56 chromosomes. What number of chromosomes will an octopus gamete contain? A. 14 B. 28 C. 56 D. 112
what is the names for plants that survive a major disturbance?
How do you convert 0.4 repeating into a fraction?
What roles do proteins play in organisms?
plz help.Four sisters bought a present for their father. they received a 10% discount on the original price of the gift. After the discount was taken, each sist
How do you write a word form for 4.293
which value correctly represents the number that is 10 times as great as five hundred eighty-one thousandths?
Factoring Trinomals (a=1)b^2 + 8b + 7