Solve the problem.Determine whether the ordered triple (-2, 6, -1) is a solution of the system of equations.-x + 3y + 4z = 163x + 2y - z = 74x - y + 3z = -17
A. Yes
B. No
Answer: A
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Solve the problem. Round to the nearest tenth if necessary.Avegail needs to determine the distance at certain points across a lake. Her crew and she are able to measure the distances shown on the diagram below. Find how wide the lake is to the nearest tenth of a meter.
A. 111.8 m B. 7.1 m C. 86.6 m D. 50 m
Solve the problem.If m varies directly as x and y, and m = 24 when x = 6 and y = 9, find m when x = 15 and y = 8.
A. 
B. 60
C. 
D. 
Sketch the graph of the quadratic function. Give the vertex and axis of symmetry.y + 9 = (x + 3)2
A. vertex: (3, 9)
axis of symmetry: x = 3
B. vertex: (- 3, - 9)
axis of symmetry: x = - 3
C. vertex: (- 3, 9)
axis of symmetry: x = - 3
D. vertex: (3, - 9)
axis of symmetry: x = 3
Solve the differential equation.
