Solve the problem.If a given set has nine elements, how many of its subsets have at least five elements?
A. 255 subsets
B. 256 subsets
C. 32 subsets
D. 130 subsets
Answer: B
Mathematics
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Determine whether the graph is a tree.A graph with 10 vertices and 4 components.
A. No B. Yes
Mathematics
Solve the problem.A rock falls from a tower that is 78.4 m high. As it is falling, its height is given by the formula 
with t in seconds. How many seconds will it take for the rock to hit the ground (h = 0)?
A. 1254.4 sec B. 8.6 sec C. 8.9 sec D. 4 sec
Mathematics
Convert the angle to decimal degree notation. Round your answer to two decimal places.269°31'
A. 269.53° B. 269.48° C. 269.52° D. 269.58°
Mathematics
Use a calculator to find the approximate value of the expression. Round the answer to two decimal places.csc 40°
A. 1.34 B. 1.46 C. 1.56 D. 1.24
Mathematics