Solve.The difference of a number and 9 is 39 less the number. Find the number.
A. -24
B. 24
C. -15
D. 15
Answer: B
Mathematics
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Find cos(A - B).sin A = - 
and tan B = - 
, with A and B in quadrant IV.
A. 
B. 
C. 
D. 
Mathematics
Solve the inequality and draw a number line graph of the solution.
(x + 5) > 
(x + 5)
A. x > 5
B. x > -5
C. x < 5
D. x < -5
Mathematics
Solve.A gelatin mold is in the shape of a hemisphere (half-sphere). If its diameter is 2 inches, find the exact volume of gelatin that 
will hold.
A. 
? cu in.
B. 
? cu in.
C. 22? cu in.
D. 
? cu in.
Mathematics
The area of the wings of a small aircraft is 140 ft2. If the length is 31 ft longer than the width, what are the dimensions of the wings? (This wing is one piece and goes along the top of the aircraft).
A. 3 ft × 34 ft B. 4 ft × 30 ft C. 5 ft × 30 ft D. 4 ft × 35 ft E. 6 ft × 27 ft
Mathematics