Solve using matrices.3x + y - 2z + w = -7-x + 3y + z - 3w = 82x - y + 3z + 2w = 15 x + y - 3z - w = -10
A. (w, x, y, z) = (-3, -5, 10, 4)
B. (w, x, y, z) = (-2, 2, 6, 1)
C. (w, x, y, z) = (-4, 3, -2, 5)
D. (w, x, y, z) = (3, -4, 0, 4)
Answer: C
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Use the circle graph to solve the problem. Give your answer as a fraction, decimal, and as a percent.The circle graph below shows the majors for 160 college students at Blackwood Community College. What portion of the students are majoring in science?
A.
 ; 0.4; 40% |
B.
; 0.4; 4%C.
; 0.33; 33%D.
 ; 0.2; 20% |
A cone sliced by a plane results in a type of curve called a conic section. Use the given information and figure to identify the conic section produced in the plane. The plane is parallel to the side of the cone. 
A. ellipse B. hyperbola C. parabola D. circle
From the list below find the expression, identical for the given.
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A. 
B. ?
C. ?
D. ?
E. ?
Perform the indicated operation where possible.
- 
A. 
B. 
C. 
D. 