Solve the system of equations by the substitution method. Check your solutions. For any dependent equations, write your answer in ordered pair form.
A. {(2, 9)}
B. {(3, 9)}
C. {(3, 8)}
D. {(2, 8)}
Answer: C
Mathematics
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Solve the inequality and graph the solution on the real number line.
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A. 
B.
C.
D.
E.
Mathematics
The graph of a function f is given. Use the graph to answer the question.What is the y-intercept?
A. -30 B. 50 C. 35 D. -40
Mathematics
Find the length of the indicated portion of the curve.r(t) = (3 + 2t)i + (7 + 3t)j + (5 - 6t)k, -1 ? t ? 0
A. 7 B. 5 C. 8 D. 9
Mathematics
Find the missing parts of the triangle. Round to the nearest tenth when necessary or to the nearest minute as appropriate.AB = 321 ydAC = 188 ydBC = 161 yd
A. A = 21.3°, B = 25.1°, C = 133.6° B. No triangle satisfies the given conditions. C. A = 25.1°, B = 21.3°, C = 133.6° D. A = 21.3°, B = 12.6°, C = 146.1°
Mathematics