John is 4 years older than his sister Mary. Together, their ages add up to 30. How old is Mary?

How many times greater is the value of the 4 in 64,781 than the value of the 4 in 25,409

Two trains are 700 miles apart. At 10 am they start traveling toward each other at average rates of 65 and 75 mph. At what time will they pass each other?

What is 0.008 in scientific notation

What is the area if the perimeter is 20

16 out of 24 in simplest form

Aiden and Ryan are collecting clothes for a shelter. Ryan collected 1/4 as many clothes as Aiden did. If Aiden collected 12 bags of clothes, which expression below could you use to find out how many bags of clothes Ryan collected? a. 12 : 1/4 b.

29, 19, and 29 triangle as acute, right, or obtuse.

Dean ran 1 2/5 miles. Sheila ran three times as far as Dean. How far did Sheila run?

3m=5 (m+3) - 3 what is m equal to?

2x + y = 3 X - 2y = - 1 If equation one is multiplied by 2 and then the equations are added, the result is 3x = 2 O 5x = 5 5x = 2 3x=5 db