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

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 is 25.2<1.5y+1.2

what is the perimeter of a triangle with vertices of (5,1) (-3,3) (-7,-3)

Angela can swim 1,700 meters in 40 minutes. What is Angela's unit rate

A meal of a chicken sandwich and some pasta salad had 150 grams of carbohydrates. The pasta salad had 30 grams more than twice the grams of carbohydrates in the

rounding 672,831 to the tens place? hundreds place? thousand place? ten thousand place? and hundred thousands place?

rounding 672,831 to the tens place? hundreds place? thousand place? ten thousand place? and hundred thousands place?

A faction is an opposing group within a party. true or false?

how did Japan's feudal system impact society?

what is 7/9 as a decimal terminating or repeating decimal

Central Subs made 27 sandwiches using 12 pounds of turkey. How much turkey was used per sandwich?HELP ME!