Solve. Round to the nearest tenth.A 25-ft-tall ladder is placed so that it reaches 18 ft up on the wall of a house. How far is the base of the ladder from the wall of the house?
A. 30.8 ft
B. 301 ft
C. 949 ft
D. 17.3 ft
Answer: D
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Solve the system of equations by elimination.3x + 8y = 173x + 2y = 47
A. ( -19, 3) B. (-19, 8) C. (19, -5) D. (-5, 19)
Consider the points plotted in the graph below.
Give the coordinates for points C and D.
A. C: (0, 2), D: (5, 3) B. C: (2, 0), D: (3, 5) C. C: (2, 0), D: (5, 3) D. C: (0, 2), D: (3, 5)
Answer the question.Is it possible to have a polynomial function whose only zeros are 9 and i? If so, write such a function. If not, explain why.
A. No; the conjugate zeros theorem requires that -9 and -i must also be zeros. B. Yes; P(x) = x2 - (9 + i)x + 9i is such a function. C. No; the conjugate zeros theorem requires that -i must also be a zero. D. Yes; P(x) = x2 - (9 - i)x - 9i is such a function.
If y varies inversely as x, and x = 5 when y = 3, find y when x = 4. Round to the nearest hundredth.
A) 4.37 B) 3 C) 3.75 D) 3.12 E) 4.5