Evaluate without using a calculator.
A. -32
B. -8
C. 8
D. 5
E. 32
Answer: A
Mathematics
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Solve.The foundation for a cylindrical fountain is a cylinder with a diameter of 14 m and 4 m high. How many cubic m of concrete are needed to build the foundation? Use 3.14 as the approximate value of ?.
A. 615.44 m3 B. 1230.88 m3 C. 2461.76 m3 D. 351.68 m3
Mathematics
Solve the problem.If twice a number is increased by 1, the result is 55. Find the number.
A. 24 B. 27 C. 32 D. 54
Mathematics
Graph the system of inequalities, and find the coordinates of the vertices.3y - x ? 1,y - x ? 4,2 ? x ? 5
A. 
B. 
C. 
D. 
Mathematics
Perform the indicated operation. Assume that all variables are nonnegative.-2
- 5
- 
A. -2
B. 7
C. -8
D. 3
Mathematics