Factor the polynomial.x2 - x - 45
A. (x - 5)(x + 9)
B. (x + 5)(x - 9)
C. (x - 45)(x + 1)
D. prime
Answer: D
Mathematics
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Find the angle between v and w. Round to one decimal place, if necessary.v = 3i + j + 2k and w = i + 2j - 3k
A. -4.1° B. 94.1° C. 91.7° D. 93.1°
Mathematics
Use a calculator to approximate the expression. Write your answer in scientific notation, and round to the nearest tenth as needed.(2.5 × 105)(3.3 × 107)
A. 83 × 1012 B. 83 × 1035 C. 8.3 × 1012 D. 8.3 × 1035
Mathematics
Use transformations to graph the function.y = cos (x + 
)
A. 
B. 
C. 
D. 
Mathematics
Give the equation of the horizontal asymptote, if any, of the function.h(x) = 
A. y = 0 B. y = 4 C. y = 9 D. no horizontal asymptotes
Mathematics