Air contains nitrogen, oxygen, hydrogen, and carbon dioxide as important constituents.

Which is the limiting reagent in the combustion reaction of propane in air?

A) Nitrogen

B) Oxygen

C) Propane

D) Carbon dioxide

So far a total of 48 tickets have been sold for the school play for a total revenue of $220. How many student tickets have been sold? Set up and solve a system of equations to solve the problem. Adult = $7 Student=$3

Morgan mowed 12 lawns in 2 hours. What was her rate of mowing in lawns per hour? Express your answer in simplest form.

Is 70 thousand written in standard of form or word form?

The slope of the line whose equation is x + y = 6 is a. - 1 b. 1 c. 6

Ines missed three questions on the test but answered 90% of the questions correctly. How many questions were on the test?

How do you do do y=3/4x

Buddy, Louis, Mabel and Spot are all puppies and are playing in the forest. They notice seven bees and five cockroaches, and they spot eight spiders in the trees. There are also three deer and four boars.

2w (3w-1) = 6w-2w = 4w is this correct?

Paige works at a department store and has a commission rate of 3 percent. Her sales for the quarter were $4,596. If she earns $50 per day and she worked 30 days in the quarter, what is the total amount she earned?

What is a 4 step equation for area