Solve using Cramer's rule.

A. (5, -2)
B. (-5, -2)
C. (-2, 5)
D. (2, -5)


Answer: C

Mathematics

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Evaluate.24 ÷ 4 ? (12 - 5)

A. 77 B. 67 C. 42 D. 102

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Find the inverse of the function.f(x) = x + 2

A. f-1(x) = x + 9
B. f-1(x) = 9x - 18
C. f-1(x) = x - 2
D. f-1(x) = 9x + 18

Mathematics

Solve the problem.A rocket lifts off the surface of Earth with a constant acceleration of 30 m/sec2. How fast will the rocket be going 2.5 minutes later?

A. 37.5 m/sec B. 75 m/sec C. 187.5 m/sec D. -75 m/sec

Mathematics

Graph the quadratic equation. Identify the vertex and the intercept points with their coordinates.y = 5x2  

A. Vertex: (0, 5);
x-intercepts: none;
y-intercepts: none

B. Vertex: (0, 0);
x-intercepts: none;
y-intercepts: none

C. Vertex: (0, 0);
x-intercepts: none;
y-intercepts: none

D. Vertex: (0, 0);
x-intercepts: none;
y-intercepts: none

Mathematics