Solve the problem.The area of a trapezoid is 50 ft2. If the bases are 8 and 12 ft, find the height of the trapezoid. 
A. 5 ft
B. 3 ft
C. 1.5 ft
D. 10 ft
Answer: A
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Simplify the expression. Assume that all variables are positive when they appear.
A. 
B. 6
C. 55
D. 
Provide an appropriate response.Suppose that you are solving a system of three linear equations and three variables by the Gaussian elimination method and you obtain the augmented matrix. 
What row operation would you perform next?
A. Add row 1 to row 2.
B. Multiply row 1 by 
.
C. Add 14 times row 1 to 6 times row 3 to obtain a zero in the third row, second column position.
D. Multiply row 2 by 
.
Simplify the expression. Write your answer without negative exponents. Whenever an exponent is negative or zero, assume that the base is not zero.
4
A. 
B. 
C. 
D. 
Solve the problem.Lookout station B is located 5 mi due east of station A. The bearing of a fire from A is S9°10'W and the bearing from B is S39°10'W. Determine the distance from the fire to B (to the nearest tenth of a mile).
A. 6.95 mi B. 9.9 mi C. 11.9 mi D. 4.95 mi