A Mississippi riverboat can travel 30 kilometers downstream in three hours and can make the return trip in five hours. Find the speed of the boat in still water.
?
__________ kph

Fill in the blank(s) with the appropriate word(s).

Answer: 8

Mathematics

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Use a calculator to find the following to four decimal places.

A. 11.6952 B. 272.9563 C. 27.2956 D. -2.3352

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Find the GCD for the given numbers by an appropriate method.22 ? 32 ? 74 and 34 ? 54 ? 72

A. 441 B. 2205 C. 1764 D. 21

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Rotate the axes so that the new equation contains no xy-term. Discuss the new equation.5x2 - 6xy + 5y2 - 8 = 0

A. ? = 45°
 + y'2 = 1
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center at (0, 0)
major axis is the x'-axis
vertices at (±2, 0)
B. ? = 45°
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focus at (0, -1)
C. ? = 45°
 - y'2 = 1
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transverse axis is the x'-axis
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D. ? = 45°
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Mathematics

Find the zeros of the polynomial function and state the multiplicity of each.f(x) = 9x7 + x5

A. 0 (multiplicity 5), ±  (multiplicity 1)
B. 1 (multiplicity 5), - i (multiplicity 1)
C. 0 (multiplicity 5), ± i (multiplicity 1)
D. 0 (multiplicity 5), i (multiplicity 1)

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Mathematics