What is the x in this equation 0.9x+20=830

What is 5Y + (3Z + X)

John drives at an average speed of 40 miles per hour for the first 5 hours of the 655 mile trip to buffalo. Charlie then drives the remaining distance in 7 hours. What is Charlie's average driving speed?

Una resma de papel tiene 20 cm de largo, 15 de ancho y 5 de altura. Calcula el volumen de una de sus hojas.

Each interior angle of a regular polygon is 120 greater than each exterior angle calculate the number of sides

Severe depression is likely to be treated with

Trey is estimating the length of a room in his house. The actual length of the room is 17 m. Trey's estimate is 15 m. Find the absolute error and the percent error of Trey's estimate. If necessary, round your answers to the nearest tenth.

Which ordered pair is a solution of the equation y = 4x? (1, 3) (-1, - 4) (-4, - 1) (1, - 4)

A bowl contains 3 red, 8 blue, and 7 black beads. Margaret randomly selects 3 beads one after the other without replacement. Find the probability of getting a red, blue, and black bead, in that order.

Solve for x 7/x+9=21/36

What is the y-intercept of f (x) = 11