Solve the problem.One printer can do a printing job in 11 hr. Another printer can do the same job in 14 hr. How long does it take the two printers to do the job working together?
A. 51
hr
B. 
hr
C. 6
hr
D. 5
hr
Answer: C
Mathematics
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Choose the polar equation that matches the graph.
A. r = sin 6? + sin2 5? B. r = cos 5? + cos2 6? C. r = sin 5? + sin2 6? D. r = cos 6? + cos2 5?
Mathematics
Solve the problem.Given the velocity and initial position of a body moving along a coordinate line at time t, find the body's position at time t.v = cos 
t, s(0) = 0
A. s = 
sin 
t + ?
B. s = 
sin 
t
C. s = sin t
D. s = 2? sin 
t
Mathematics
Multiply or divide. Write the answer in lowest terms.
÷ 
A. 
B. 
C. 
D. 
Mathematics
Multiply the polynomials. Express the answer as a single polynomial in standard form.(x + 7)(x - 7)
A. x2 - 14x - 49 B. x2 - 49 C. x2 + 14x - 49 D. x2 - 14
Mathematics