Find the dot product of u and v.
u = -7i+ 3j+ 3k, v = -8i+ 4j- k
A. -15i+ 7j+ 2k
B. 65
C. -6
D. 56i+ 12j- 3k
E. 71
Answer: B
Mathematics
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Add.360.9 + 0.54 + 74.33 + 94 + 1.3
A. 531.08 B. 531.07 C. 531.17 D. 532.07
Mathematics
Identify the conic that the polar equation represents. Also, give the position of the directrix.r = 
A. ellipse, directrix perpendicular to the polar axis 3 right of the pole B. hyperbola, directrix perpendicular to the polar axis 3 left of the pole C. ellipse, directrix perpendicular to the polar axis 3 left of the pole D. hyperbola, directrix perpendicular to the polar axis 3 right of the pole
Mathematics
Solve using the addition and multiplication principles together.
x - 
x = 3
A. 45 B. -90 C. -45 D. 90
Mathematics
The lengths of the legs of a right triangle are given. Find the hypotenuse.a = 15, b = 20
A. 18 B. 25 C. 24 D. 13
Mathematics