What does about mean in math? do you round or just add or subtract?

There are 19 green marbles in a box. The number of green marbles in the box is 6 more than half the number of red marbles in the box. Write an algebraic equation to represent r, the number of red marbles in the box.

Mia wants to reseed her lawn. She selects Show Seed. Show Seed is $7.59 per bag, and the coverage per bag is 200 square meters. The total area of Mia's property is 600 square meters. Her house and driveway cover 150 square meters.

Calculate the work associated with the expansion of a gas from46l to64 l at a constant external pressure of 15 atm?

Every day Katie looks at the seashells on the beach. she has 28 shells in her collection. katie finds 12 more shells each day

John drove from house to work at an average speed of 30 mph, trip took 40 minutes. How far in meters is his house to work?

Its colder than - 2 outside as an inequality

I know how to convert degrees into degrees-minutes-seconds. I was just wondering about the negative and 0°. The original degree is -.9225°.

Is C + 11 = 20; c = 9 a solution if the equation

Solve the following equation and verify your answer 5x-2=3x-4

2 tens 1 one x 10 in unit form and standard form