Solve the system of equations by the addition method.
A. (7, -10)
B. (4, -10)
C. (-6, 10)
D. infinite number of solutions
Answer: C
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The graphs of two functions f(x) and g(x) are given.Solve f(x) ? g(x).
A. x ? -2 or x ? 4 B. -3 ? x ? 3 C. -3 ? x ? 4 D. x ? -3 or x ? 4
Find the indicated quantities for the appropriate geometric sequence.A piece of cardboard is 0.02 in. thick. The cardboard is cut in half, with one half being placed on top of the other so that its thickness doubles for 6 times in a row. How thick would the final stack of cardboard be? Round to two decimal places.
A. 1.28 in. B. 3.78 in. C. 0.64 in. D. 2.10 in.
As part of a study, 800 college football players are randomly chosen and their weights taken. The distribution of the weights is approximately normal. The average weight is 235 pounds and the standard deviation is 25 pounds.A weight of 300 pounds corresponds to a standardized value of
A. 2.6. B. 2.3. C. 1.2. D. -1.2. E. none of these
Find the following root if it exists.
A. 11 B. 9 C. 40.5 D. 18