Solve the system using matrices.x - y+ 5z = 7x + 3y + z = 110.4x + 0.1z = 0.2
A. (0, 3, 2)
B. No solution
C. (2, 3, 0)
D. (2, 0, 3)
Answer: A
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For the pair of functions, perform the indicated operation.f(x) = x2 + 1, g(x) = 2x - 7
Find (f ? g)(x).
A. 2x3 + 2x2 - 7x - 7 B. 2x2 + 2x - 7 C. 2x3 - 7x2 + 2x - 7 D. 2x3 - 7
Solve the system of equations.
A. (-7, -6), (-6, -7) B. (-7, 6), (-6, 7) C. (7, -6), (6, -7) D. (7, 6), (-6, -7)
Translate the sentence into a mathematical equation. Be sure to identify the meaning of all symbols.Speed is measured by distance divided by time.
A. If S represents speed, d distance, and t time, then d = 
.
B. If S represents speed, d distance, and t time, then S = 
.
C. If S represents speed, d distance, and t time, then t = 
.
D. If S represents speed, d distance, and t time, then S = 
.
Divide, when possible.
A. 161 B. 157 C. 159 D. 162