Add.-55 + (-13)
A. 42
B. 68
C. -68
D. -42
Answer: C
Mathematics
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Solve and check.
+ 
= 
A. -3, -4 B. 4, 3 C. -6, 5 D. no solution
Mathematics
Use the vertex formula to find the vertex of the quadratic function.f(x) = -x2 - 8x + 4
A. (-8, 4) B. (4, -44) C. (-4, 20) D. (4, -12)
Mathematics
Using the Divergence Theorem, find the outward flux of F across the boundary of the region D.F = xyi + y2j - 2yzk ; D: the solid wedge cut from the first quadrant by the plane 
and the parabolic cylinder x = 1 - 9y2
A. 
B. 
C. 
D. 
Mathematics
Solve the problem.The following test scores were recorded for a student: 87, 79, 75, 75, 87, 89. Find the mean, median, and mode.
A.
| mean: 82 | median: 75 | mode: 89 |
B.
| mean: 83 | median: 83 | mode: 75 |
C.
| mean: 83 | median: 82 | mode: 87 |
D.
| mean: 82 | median: 83 | mode: 75 and 87 |
Mathematics