Solve.A boat goes 480 miles downstream in the same time it can go 400 miles upstream. The speed of the current is 4 miles per hour. Find the speed of the boat in still water.
A. 40 mph
B. 48 mph
C. 88 mph
D. 44 mph
Answer: D
Mathematics
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1 deciliter = ____ liters
A. 0.1 B. 10 C. 100 D. 0.01
Mathematics
Solve the equation.2x + 7 = 2(x + 7)
A. 7 B. no solution C. 0 D. 14
Mathematics
Solve the equation by making an appropriate substitution.x4 - 20x2 - 125 = 0
A. {- 
, 
, -5i, 5i}
B. {5, i
}
C. {-25, 5}
D. {-5, 5, -i
, i
}
Mathematics
Solve the problem. Round dollar amounts to the nearest cent.Find the average inventory at retail.
A. $84,393.00 B. $98,720.00 C. $296,160.00 D. $74,040.00
Mathematics