There are approximately 6.5 billion people on earth. if the average person has a mass of 65 kg, how much do all the people on earth weigh all together?

If a pair of perpendicular lines are rotated, which is true? A) Rotating perpendicular lines result in parallel lines. Eliminate B) The lines remain perpendicular only if rotated 180°. C) The lines remain perpendicular only if rotated 360°.

What is 80000*80000+9000025

What is 12 1/2 as an improper fraction?

Divide use estimation or multiplication to check 6:89 r

Oscar and Stella go birdwatching. Oscar sees 7 birds. Stella sees 28 birds. How many times as many birds as Oscar does Stella See? Which bar model represents the problem?

What is the equation of the following line (1,9) (0,0)

2 5/16 divided into 7/8 equals what

The perimeter of a rectangular garden is 52 feet the length of the garden is 4 less than twice the width what is the widththe

A shopper wants to ensure she has enough cash to purchase a $25 cell phone, so she asks a clerk what the total will be with the sales tax included. The clerk tells her the total will be 27.25. What is the sales tax percentage?

What is the unit rate of five and 15?