Multiply.
A. 424,048
B. 423,938
C. 423,948
D. 423,958
Answer: C
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Solve the problem.A small frictionless cart, attached to the wall by a spring, is pulled 10 cm back from its rest position and released at time t = 0 to roll back and forth for 4 sec. Its position at time t is 
. What is the cart's maximum speed? When is the cart moving that fast? What is the magnitude of of the acceleration then?
A. 10? ? 31.42 cm/sec; t = 0.5 sec, 1.5 sec, 2.5 sec, 3.5 sec; acceleration is 0 cm/sec2 B. ? ? 3.14 cm/sec; t = 0.5 sec, 1.5 sec, 2.5 sec, 3.5 sec; acceleration is 0 cm/sec2 C. 10? ? 31.42 cm/sec; t = 0.5 sec, 2.5 sec; acceleration is 1 cm/sec2 D. 10? ? 31.42 cm/sec; t = 0 sec, 1 sec, 2 sec, 3 sec; acceleration is 0 cm/sec2
Use linear interpolation to find the indicated value.The radius of a cone of fixed volume is related to the height according to the following table:
If the radius is 4.13 cm what is the height?
A. 7.532 cm B. 7.525 cm C. 7.475 cm D. 7.500 cm
Solve the problem.An airplane travels 800 miles against the wind in 5 hours, and makes the return trip with the same wind in 2 hours. Find the speed of the wind.
A. 400 mph B. 160 mph C. 120 mph D. 280 mph
Find the sum.1 + 3 + 5 + ... + 539
A. 72,900 B. 72,361 C. 73,170 D. 73,441