Estimate by rounding as directed.532.432 - 175.21; nearest ten

A. 350
B. 340
C. 330
D. 360


Answer: A

Mathematics

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Simplify the expression, using only positive exponents in your answer. 

A.
B.
C.
D. 9x - 45y2

Mathematics

Divide.30 ÷ 0.06

A. 5 B. 0.5 C. 500 D. 50

Mathematics

Use the power rule and the power of a product or quotient rule to simplify the expression.(4a)3

A. 64a3 B. 12a3 C. 64a D. 12a

Mathematics

Solve.The process by which a gas escapes from a container with a small puncture is called "effusion". Under identical conditions, gases with relatively small particle masses effuse more rapidly than gases with larger particle masses. The relative rate of effusion of helium (He) and nitrogen (N2) can be computed using: relative rate =  = ,where MHe is the mass of the helium particles and MN2 is the mass of the nitrogen particles. Assuming MHe = 4 and  MN2 = 28 (arbitrary units), find the exact value of the relative rate of effusion.

A.
B. 7
C.
D.

Mathematics