Solve.Frank can type a report in 6 hours and James takes 7 hours. How long will it take the two of them typing together?
A. 
hr
B. 42 hr
C. 7 hr
D. 
hr
Answer: D
Mathematics
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If 
, calculate the value of 
.
?
A. 112.01 B. 289.68 C. 111.37 D. -0.63
Mathematics
Find the area of a sector with central angle 5 /4 ? in a circle with radius 0.5 m.
What will be an ideal response?
Mathematics
Evaluate if possible.
+ 
A. 12
B. 130
C. 
D. 14
Mathematics
Solve. x2 - 3y2 = 14x2 + 3y2 = 19
A. (1, 2), (-1, 2), (1, -2), (-1, -2) B. (-1, 2) and (1, -2) C. (2, 1), (2, -1), (-2, 1), (-2, -1) D. (2, 1) and (-2, -1)
Mathematics