Perform the indicated operation. Simplify the result if possible.13 yd 2 ft + 20 yd 2 ft
A. 34 yd 2 ft
B. 33 yd 2 ft
C. 34 yd 1 ft
D. 33 yd 1 ft
Answer: C
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Solve by the substitution method.8x + 17 = 7y5x - 3y = -12
A. (7, -12) B. (-1, -3) C. (-4, 0) D. (-3, -1)
?The time t (in hours) required for a new employee to successfully learn to operate a machine in a manufacturing process is described by the probability density function 
over the interval
. Find the probability that a new employee will learn to operate the machine in more than 4 hours but less than 7 hours. Round
your answer to four decimal places. ? A. ?0.5371 B. ?0.1583 C. ?0.4632 D. ?0.1469 E. ?0.3162
Solve the problem.A $134,000 trust is to be invested in bonds paying 7%, CDs paying 6%, and mortgages paying 10%. The bond and CD investment together must equal the mortgage investment. To earn a $11,130 annual income from the investments, how much should the bank invest in bonds?
A. $39,000 B. $26,000 C. $67,000 D. $41,000
The quantity demanded for a certain brand of portable CD players is 200 units when the unit price is set at $90. The quantity demanded is 1,200 units when the unit price is $40. Find the demand equation
a. p = - 0.05x + 90 b. p = - 0.04x + 100 c. p = - 0.04x + 90 d. p = - 0.05x + 100