Find a unit vector in the direction of the given vector.
?
?
A. j
B. i
C. -j
D. -i
E. ?i - j
Answer: A
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For the pair of similar triangles, find the length of the indicated side.
In the upper triangle, the shortest side has length 16, and the middle side has length 24. In the lower triangle, the shortest side has length 12, the middle side has length 18, and the longest side has length 24. Find the length, x, of the longest side of the upper triangle.
A. x = 30 B. x = 32 C. x = 24 D. x = 40
Write an equivalent fraction satisfying the stated condition.
; numerator = 51
A. 
B. 
C. 
D. 
Provide an appropriate response.The amount of money needed in the present to yield a desired future amount is called the compound total.
A. True B. False
Find the variance of the probability density function to the nearest hundredth.f(x) = 
; [3, 5]
A. 0.31 B. 0.33 C. 0.27 D. 0.25