Solve the problem.A boat goes 400 miles downstream in the same time it can go 320 miles upstream. The speed of the current is 6 miles per hour. Find the speed of the boat in still water.
A. 60 mph
B. 72 mph
C. 54 mph
D. 48 mph
Answer: C
Mathematics
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The graph of a polar equation is given. Select the polar equation for the graph.
A. r = 2 + cos ? B. r = 4 sin ? C. r = 4 cos ? D. r = 2 + sin ?
Mathematics
Factor by grouping.6x2 - 4x - 9x + 6
A. (2x - 3)(3x - 2) B. (2x + 3)(3x + 2) C. (6x + 3)(x + 2) D. (6x - 3)(x - 2)
Mathematics
Convert.9.4 kg to grams
A. 0.0094 g B. 94,000 g C. 0.00094 g D. 9400 g
Mathematics
Find the accumulated amount A if the principal P = $3,000 is invested at the interest rate of r = 6% per year for t = 4 years, compounded annually.
a. The accumulated amount is $3,116.19. b. The accumulated amount is $3,430.31. c. The accumulated amount is $3,787.43. d. The accumulated amount is $3,915.58.
Mathematics