How long was WW2 and how much longer was it than WW1 (asking for a friend)

What is 3-8 + 2v - v equal to?

an angles measure is 6 degress more than 3 times the measure of it complement. what is the angles measure

Ella simplifies (3b+4r) + (-2b-r) and says the result is b+5r. what error did ella make

Write the expression 2x2x2x2+7-5x5x5 using exponents

Joshua's goal is to sell more than 20 items at a farmers' market. So far, he has sold 6 items. Each of his customers buys 2 items. Let c represent the number of additional customers Joshua must have to meet his goal.

You need to be taller than 48" to ride the roller coaster. Which of the following inequalities shows the height Susan has to be to ride the roller coaster. h < 48" h > 48" h ≤ 48" h ≥ 48"

Aldo wants to install a skylight in the roof of his house. The base of the skylight is a regular hexagon with side length 40 cm. What is the perimeter of the base of the skylight? Give your answer in metres. Which strategy did you use to find out?

What is the LCM of 90 and 270?

How can you use models to explain why 3.1=3.10?

Scientific notation for 82,300,000