Solve the problem.An investor buys a $20,000 T-bill at a 7% discount for 26 weeks. Find the effective interest rate. (Assume 52 weeks per year.)
A. 7.25%
B. 5.45%
C. 10.50%
D. 3.63%
Answer: A
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Use the theoretical probability formula to solve the problem. Express the probability as a simplified fraction.This problem deals with eye color, an inherited trait. For purposes of this problem, assume that only two eye colors are possible, brown and blue. We use b to represent a blue eye gene and B a brown eye gene. If any B genes are present, the person will have brown eyes. The table shows the four possibilities for the children of two brown-eyed (Bb) parents. Second Parent B bFirst Parent B BB Bb b Bb bbFind the probability that these parents give birth to a child who has blue eyes (bb).
A. 1
B. 
C. 0
D. 
Factor completely.x2 + 11x + 12
A. cannot be factored B. (x + 12)(x - 1) C. (x - 6)(x + 2) D. (x + 6)(x - 2)
Simplify.64 + 19
A. 83 B. 84 C. 73 D. 82
Solve.In the study of alternating electric current, capacitive voltage is given by 
, where f is the number of cycles per second, i is the maximum current, and t is the time in seconds. Solve the equation for t.
A. t = 
Arccos (- 
)
B. t = 2?f cos (- 
)
C. t = 2?f Arccos (- 
)
D. t = 
Arccos (
)