What is the value of r?

-9=-6r

(Negative nine) = (negative six) (variable r)

Tia made a two-layer cake. Each layer is a rectangular prism that is 4 inches high. The base of the bottom layer is 200 square inches. The base of the top layer is 54 square inches. What is the total volume?

Fie abc un triunghi cu masura unghiului a de 90 de grade ab este 6 cm bc=10 si ca=8 calculati; sin b; tg b; sin c; tg c; cos b; ctg b; cos c; ctg c

F (*) = 5*-10. What is the vaule of f^-1 (-3)

What is the slope of x+y=7, x-y=8

Write a function rule based on the table below. x f (x) -1 5 0 5 1 5

The equation t=0.07c represents the tax, t, based on the cost, c, of an item. Which part all of the equation represents the constant of proportionality? (A) T (B) 0.07 (C) C (D) 7

What is the angle measure that is vertical to an 83° angle?

Can area and perimeter be measured in units squared

The windows of a downtown office building are arranged so that each floor has six fewer windows than the floor below it. If the ground floor has 52 windows, how many total windows are on the first eight floors?

4) 4n2 + 7n - 135 = 0