Solve.
- 1 = 
A. -42, 14
B. -12, 14
C. 12, -14
D. No solution
Answer: C
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Use a calculator to find the acute angle between the planes to the nearest thousandth of a radian.4x - 7y + 10z = -4 and -2x - 7y + 9z = 5
A. 1.078 rad B. 0.493 rad C. 1.524 rad D. 0.152 rad
Parametric equations and a parameter interval for the motion of a particle in the xy-plane are given. Identify the particle's path by finding a Cartesian equation for it. Graph the Cartesian equation. Indicate the portion of the graph traced by the particle and the direction of motion.x = 2 sin t, y = 4 cos t, 0 ? t ? 2?
A. 
+ 
= 1
Counterclockwise from (0, 4) to (0, 4), one rotation
B. 
+ 
= 1
Counterclockwise from (4, 0) to (4, 0), one rotation
C. 
+ 
= 1
Counterclockwise from (0, 2) to (0, 2), one rotation
D. 
+ 
= 1
Counterclockwise from (2, 0) to (2, 0), one rotation
Find the slope of the line.
A. 2 B. undefined C. 0 D. -2
Use the product rule to simplify the expression.x6 ? x2 ? y8 ? y5
A. x12y10 B. x8y14 C. x11y10 D. x8y13