Solve the following system by substitution.

A.
B.
C.
D.


Answer: B

Mathematics

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Use scientific notation to solve the problem.If the speed of light is 3.00 x 108 m/sec, how long does it take light to travel 2.29 x 1011 m, the distance from the sun to Mars?

A. 76 sec B. 7.6 x 102 min C. 7.6 x 103 sec D. 7.6 x 102 sec

Mathematics

Solve.Express the angular velocity of 800 rad/sec in rev/sec (to the nearest hundredth).

A. 2,513.27 rev/s B. 254.65 rev/s C. 127.32 rev/s D. 5,026.55 rev/s

Mathematics

Solve the problem.Write four out of five students as a decimal and as a percent.

A. 8, 800% B. 0.8, 8% C. 0.8, 800% D. 0.8, 80%

Mathematics

Suppose molasses is stored in a cylindrical tank 55 feet high and 100 feet in diameter. What is the volume of such a tank in gallons? Choices are rounded to the nearest ten thousand.

Use unit analysis to answer the question. Fact: 231 cubic inches = 1 gallon A) 12,930,000 gal B) 3,230,000 gal C) 60,000 gal D) 3,330,000 gal E) 3,430,000 gal

Mathematics