Evaluate the integral 
.
?
A. 
B. 
C. 
D. 
E. 
Answer: E
Mathematics
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Solve the problem.A reservation clerk worked 12.15 hours one day. She spent twice as much time entering new reservations as she did verifying old ones and one and a half as much time calling to confirm reservations as verifying old ones. How much time did she spend entering new reservations?
A. 4.05 hours B. 10.8 hours C. 5.4 hours D. 2.7 hours
Mathematics
A triangle with vertices at (x1, y1), (x2, y2), and (x3, y3) has area equal to the absolute value of D, where D = 
.Find the area of the triangle having vertices at P, Q, and R.P(0, 5), Q(5, 8), R(7, 4)
A. 26 B. 0 C. 2 D. 13
Mathematics
Divide. Simplify, if possible.-2.1 ÷ 0.07
A. -30
B. -20.3
C. 
D. -2.03
Mathematics
Perform the indicated operation. Simplify if possible.
+ 
A. 
B. 
C. 
D. 
Mathematics