Find the value of the determinant. 

A. 8
B. 4
C. 64
D. -8


Answer: A

Mathematics

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Find the length of the curve.The curve r = a cos2 , 0 ? ? ? ?, a > 0

A. 2?a
B.
C.
D. 2a

Mathematics

Approximate the surface area of the figure using 3.14 for ?. If necessary, round your answer to the nearest tenth.

A. 479.6 ft2 B. 1653.2 ft2 C. 2449.2 ft2 D. 959.3 ft2

Mathematics

Before the parachute opens, the velocity v (in meters per second) of a skydiver is given by , where t is time in seconds into the jump. After t seconds, a certain falling object has a velocity v given by

variablename="impvar_41631cc6bbec485098a789628" />. What is the difference in their velocities after 27 seconds? Round to two decimal places. ? A. 9.81 m/sec B. 5.60 m/sec C. 0.17 m/sec D. 9.00 m/sec E. 9.17 m/sec

Mathematics

Translate to a proportion and solve.  82  is 10% of what?

A. 8200 B. 8.2 C. 820 D. 82

Mathematics