2r+12=10r-20 what is r?

What is the slope of y = 12x-19

Solve for x. x/4 = 3/8

Eric has 6 1/6 feet tall and his brother is 5 3/4 feet tall. Eric is how many feet taller than his brother?

Maria rolled a fair die 10 times and it landed on 3 every time. If she tosses the die an 11th time, what is the theoretical probability it will land on 5?

A taxi ride costs $3 plus $2.50 per mile. Write and graph an equation in two variables that represents the total cost of a taxi ride. Let m represent number of miles and c represent the total cost (in dollars) of the taxi ride.

In triangle ABC, the measure of the angles are 2x, x, and 3x respectively. What is the measure of angle B?

A diderenca do carro azul 1/2e so verde 1/4

Convert the following measurements. 13 miles to yard

The coordinates A (0, 0), B (0, 3), C (3, 3) and D (3, 0) are graphed and connected together. What 3-dimensional shape will be created when this shape is rotated about the y-axis?

29. New grass seeds grow rapidly. A grass seed has grown to 0.3 millimeters tall. Tomorrow it will be 0.9 millimeters tall, the next day it will be 1.5 millimeters tall, and on the next day it will be 2.1 millimeters tall.