Solve by completing the square. If the equation has no real solutions, write "no real-number solutions."x2 = 7 - 8x
A. 4 + 
B. no real-number solutions
C. -4 ± 
D. -4 ± 1
Answer: C
Mathematics
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Solve the problem.Assume that the weights of quarters are normally distributed with a mean of 5.67 g and a standard deviation 0.070 g. A vending machine will only accept coins weighing between 5.47 g and 5.77 g. What percentage of legal quarters will be rejected?
A. 2.48% B. 0.0196% C. 3.95% D. 1.62%
Mathematics
Evaluate the expression.54 ÷ (-3)
A. 18
B. - 
C. -28
D. -18
Mathematics
A series resonant circuit is used as a bandpass filter. What is Q if BW = 3 KHz and f1 = 10 KHz?
a. 3.8 b. 3.3 c. 4.3 d. 6.3 e. 7.6
Mathematics
Find the root. Assume that variables represent any real number.
A. 12
B. 12y3
C. 12
D. 12y2
Mathematics