If y varies directly as x and as the square of z, and y = 25
when x = 5 and z = 1, find y when x = 1 andz = 4
9

The answr is y=5/36 If my math is correct

Since the question is y=25/9 and x was 5 and z was 1, I thought 5 x 5 is 25, so x is 5. and 1 x 9 is 9 so z is 9. so then i multiplied 9x4 for z and 5 x 1 for x

n=9

step-by-step explanation:

7 times a number = 7n

decreased by 13 = 7n-13

same as is =

5 times the number = 5n

increased by 5 = 5n+5

7n-13 = 5n+5

2n=18

n=9

ummm seems that u didnt post the attachement !