Find the unit vector in the direction of the given vector. Write your answer in the indicated form.Let u = -2i + 5j. Find the unit vector in the direction of u, and write your answer in component form.
A. 
B. 
C. 
D. 
Answer: C
Mathematics
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Evaluate the integral.
A. 
sec3x sinh (ln 
) + C
B. sinh (ln 
) + C
C. sinh(tan x) + C
D. 
sec3x sinh(tan x) + C
Mathematics
Multiply.(2x + 7)(2x + 7)
A. 2x2 + 27x + 49 B. 2x2 + 28x + 27 C. 4x2 + 49x + 28 D. 4x2 + 28x + 49
Mathematics
Find the measure of the angle.
?BGE
A. 105° B. 110° C. 95° D. 100°
Mathematics
Solve the problem.The daily profit in dollars of a specialty cake shop is described by the function 
where x is the number of cakes prepared in one day. The maximum profit for the company occurs at the vertex of the parabola. How many cakes should be prepared per day in order to maximize profit?
A. 28 cakes B. 56 cakes C. 784 cakes D. 2352 cakes
Mathematics