Solve the system of equations by the elimination method. Check your solutions. For any dependent equations, write your answer in the ordered pair form.
A. {(-3, -9)}
B. 
C. ?
D. {(1, 1)}
Answer: B
Mathematics
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Solve the problem.Find the volume of the solid generated by revolving the region in the first quadrant bounded by the x-axis and the curve y = x cos x, 0 ? x ? ?/2 about the y-axis.
A. 
+ 2?2 - 4?
B. 
- 8?
C. 
- 4?
D. 
- 4?
Mathematics
Use the rules for exponents to rewrite the expression and then evaluate the new expression. (72)-1
A. 
B. - 
C. -14
D. -49
Mathematics
Solve the problem.The Wellspring Company's fleet of trucks get 17, 10, 17, 8, 19, 11, and 23 miles per gallon (mpg). What is the mean miles per gallon for the fleet? Round to the nearest whole number.
A. 14 mpg B. 18 mpg C. 15 mpg D. 16 mpg
Mathematics
Convert.88 centimeters = ___ meters
A. 88,000 B. 0.88 C. 0.088 D. 8800
Mathematics