Solve the problem.Find the height of a moving box if its length is 30 in., its width is 33 in., and its surface area is 
Assume that the surface area includes the top of the moving box.
A. 13 in.
B. 12,870 in.
C. 33 in.
D. 30 in.
Answer: A
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Solve the problem. Use the correct number of significant digits.Assume that the volume of Earth is5.0 × 1014 cubic meters and the volume of a bacterium is2.5 × 10-16 cubic meters. If Earth could be filled with bacteria, how many would it contain?
A. 2.0 × 1030 bacteria B. 2.0 × 10-30 bacteria C. 5.0 × 1031 bacteria D. 5.0 × 10-31 bacteria
Multiply.
A. 1 B. 4.625 C. 4 D. 1.785
Solve.Two numbers total -2, and their difference is 16. Find the two numbers.
A. 0 and - 2 B. -2 and 2 C. 7 and - 9 D. - 1 and - 17
Solve.A researcher measured the weights of three substances in a laboratory: Substance A (18.01 g), Substance B (17.9 g), and Substance C (18.1 g). Which substance was the heaviest?
A. Substance C B. Not enough information C. Substance B D. Substance A