Solve.Amy can clean the house in 6 hours. When she works together with Tom, the job takes 4 hours. How long would it take Tom, working by himself, to clean the house?
A. 13hr
B. 12 hr
C. 12
hr
D. 2 hr
Answer: B
Mathematics
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Rationalize the denominator. Assume all variables represent positive numbers.
A. 
B. 
C. 
D. 
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Show that the equation is not an identity by finding a value of x for which both sides are defined but not equal.cos 5x + cos 12x = 2 cos 7x cos x
A. 2?
B. -2?
C. 
D. 0
Mathematics
Perform the indicated operations.
÷ 
? 
A. 
B. r + s
C. r - s
D. 
Mathematics
Perform the indicated operation. Write the answer in simplest form.40 ÷ 1
A. 28
B. 29
C. 31
D. 30
Mathematics