Aria solved this multiplication problem.

48

* 13

624

Which expression could Aria use to check her work?

A.

624 * 13

B.

624 : 13

C.

624 * 48

D.

48 : 13

What is the sum of 2m + 10

Use scientific notation to estimate the number of hours in one year? 1 hour = 3,600 seconds

Barbara sells iced tea for $1.49 per bottle and water for $1.25 per bottle. She wrote an equation to find the number of bottles she needs to sell to earn $100. 1.25x + 1.49 = 100 What error did Barbara make in writing the equation?

Three glasses of squash are made using cordial and water. The different mixtures are: Glass A: cordial: water = 3:22. Glass B: cordial = 1/8 of the total volume. Glass C: Cordial = 12.75% of the total volume.

If a = 42 and b = 2 then find ab

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Cylinder A has radius r and height h as shown in the diagram. Cylinder B has radius 2r and height 2h. How many times greater is the surface area of Cylinder B than the surface area of Cylinder A?

The triangles in the diagram are congruent. If mF = 40°, mA = 80°, and mG = 60°, what is mB?

3x-4y=65? What is the value of x? When y=4