Solve the problem.Frank can type a report in 6 hr. James can type it in 4 hr . How long will it take the two of them working together?
A. 12 hr
B. 
hr
C. 
hr
D. 2
hr
Answer: D
Mathematics
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Perform the indicated operation without the use of a calculator and express each answer in scientific notation.
A. 2 × 1015 B. 2 × 101 C. 2 × 10-15 D. 2 × 10-1
Mathematics
Solve the problem.Find the length of the unknown side of the right triangle, where a and b are the legs and c is the hypotenuse. a = 6, b = 8, c = ?
A. c = 10 B. c = 7 C. c = 9 D. c = 5
Mathematics
Find the asymptotes of the hyperbola.x2 - y2 - 2x - 8y - 40 = 0
A. y + 1 = (x - 4) and y + 1 = - (x - 4)
B. y - 1 = (x + 4) and y - 1 = - (x + 4)
C. y + 4 = (x - 1) and y + 4 = - (x - 1)
D. y + 4 = 
(x - 1) and y + 4 = - 
(x - 1)
Mathematics
Insert <, >, or = between the pair of numbers to form a true statement.0.163 
0.193
A. < B. = C. >
Mathematics