Rationalize the denominator. Assume that all variables represent positive values.
A. 
B. 
C. 
D. 
Answer: D
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Use scientific notation to solve the problem.How many liters of oil are needed to supply the electrical energy needs of an average U.S. home for 10 weeks? Assume that the energy released by burning one liter of oil is 1.2 × 107 joules and that the electrical energy used daily in an average U.S. home is 5 × 107 joules. Round your answer to the nearest tenth of a liter.
A. 291.7 liters B. 2.4 liters C. 16.8 liters D. 41.7 liters
Use the rules for exponents to rewrite the expression and then evaluate the new expression. (2-2)0
A. 1
B. 
C. 0
D. -4
Find the exact value of the expression if ? = 30°. Do not use a calculator.g(?) = sin ?Find 
.
A. 
B. 
C. 20
D. 
Multiply.2a2b4(5a8b7 + 8b6 + 10a)
A. 10a8b7 + 16b6 + 20a B. 10a10b11 + 16a2b10 + 20a3b4 C. 10a10b11 + 8b6 + 10a D. 10a10b11 + 16a3b10 + 10a