What's the algebraic expression for 5,9,13,17,21

If 2+2=4 what does 16m times 500m is

Is 7,8, and 9 a right triangle

Simplify to an expression involving a single trigonometric function with no fractions. cos (-x) + tan (-x) sin (-x)

It takes 7 minutes to fill an empty aquarium to a depth of 7/8 meters. What is the unit rate in minutes per meter? Write your answer in simplest form.

The sum of two numbers is 640. If you divide the bigger number by the smaller, you'll get quotient 7 and remainder 64. Find the numbers.

Anna drove 110 miles in 2 3/4 hours. How many hours would it take Anna to drive 80 miles?

Kevin has a spinner that has 10 equal sections and 2 sections of each color-red, blue, green, yellow, and purple. Kevin spins the spinner 180 times.

This year, Cornell's class took two more than three times as many field trips as last year's class. This year, Cornell's class took a total of 8 trips. How many field trips did his class take last year?

What are all the ways to get 60 by multiplying

A rectangle is twice as long as it is wide. it's width is 5 1/2 cm. find the area of the rectangle.