Find the unit vector that has the same direction as the vector v.v = 3i + j
A. u = 
i + 
j
B. u = 3
i + 
j
C. u = 
i + 
j
D. u = 
i + 
j
Answer: C
Mathematics
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Calculate the arc length S and area A for each of the following sectors. Round to the nearest whole number if necessary.a = 4 rad, r = 25 m
A. S = 112 m, A = 1250 m2 B. S = 100 m, A = 1050 m2 C. S = 75 m, A = 1255 m2 D. S = 100 m, A = 1250 m2
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Find the area.
A. 1152 in2 B. 924 in2 C. 1224 in2 D. 1848 in2
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Solve the equation.n - 15 = 17
A. -2 B. 2 C. 32 D. -32
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Use the properties of logarithms to expand the expression as a sum, difference, and/or constant multiple of logarithms. (Assume all variables are positive.)
?
?
A. 3log8 x + 3log8 y + 3log8 z
B. 3log8 x + 3log8 y - 3log8 z
C. 
D. 3log8 x - 3log8 y - 3log8 z
E. 3log8 x - 3log8 y + 3log8 z
Mathematics