The average life expectancy in a certain country is 50.2 years. Estimate the country's life expectancy in hours by rounding the life expectancy to the nearest year.

Tony began putting together a rectangular puzzle. He completed the top edge and edge of the puzzle, as shown below. piece is a square that has a side length of Each 21 centimeters.

How to find a side in special right triangles

Three friends were training for a marathon. One day, Mark ran three miles less than Phil. Ron ran seven miles more than Mark. Together they ran sixty-four miles. How far did Ron run?

A novel is opened and the sum of the 2 page numbers facing each other is 505. What pages of the novel have you turned to?

541 less than the product of 64 and a number is - 803.

3/5=a+5/25 A= Using proportional reasoning

If a car travels at a speed of 25 miles per hour for t hours then travel s 45 miles per hour for m hours what does the expression 25t + 45m represent

Simplify by combiningl ike terms 2x+5y+6x-2y

Which set is a subset of every set?

For the following system, use the second equation to make a substitution for y in the first equation. 3x + y = 1 y + 4 = 5x What is the resulting equation?