Determine the equation of joint variation. then solve for the missing value.

x varies directly with y and z.
x = 400 when y = 8 and z = 10.
find x when y = 10 and z = 12.

When a rectangle is dilated, how do the perimeter and area of the rectangle change?

Write a function for a rotation 90 degrees counter clockwise about the origin, point 0

Apiling for a high-rise building is pushed by two bulldozers at exactly the same time. one bulldozer exerts a force of 1250 pounds in a westerly direction. the other bulldozer pushes the piling with a force of 2650 pounds in a northerly direction. what is the direction of the resulting force upon the piling, to the nearest degree? a. 65 n of w b. 25 n of w c. 45 n of w d. 35 n of w