Express the number in scientific notation.2500
A. 2.5 × 10-2
B. 2.5 × 10-3
C. 2.5 × 103
D. 2.5 × 102
Answer: C
Mathematics
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A. N(t) = (-sin t)i + (cos t)j B. N(t) = (sin t)i + (cos t)j C. N(t) = (-sin t)i - (cos t)j D. N(t) = (-cos t)i - (sin t)j
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Solve the quadratic equation.x2 - 7x + 12 = 0
A. -6, -8 B. 6, 8 C. -3, -4 D. 3, 4
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Use the formula for Sn to find the sum for the geometric sequence.1, 2, 4, 8, 16
A. 33 B. 31 C. 32 D. 21
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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
Mathematics