Use these equations to convert between the two systems. C = 
(F - 32) F = 
C + 32Round answer to the nearest tenth of a degree if necessary.F = 22°
A. C = -5.6°
B. C = -18°
C. C = 8.7°
D. C = 30°
Answer: A
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Graph the pair of parametric equations with the aid of a graphing calculator.x = 6 cos t + 2 cos 3t, y = 6 sin t - 2 sin3t, 0 ? t ? 2?
A. 
B. 
C. 
D. 
Describe the given set of points with a single equation or with a pair of equations.The circle in which the plane through the point (-4, 12, -9) perpendicular to the y-axis meets the sphere of radius 15 centered at the origin.
A. x 2 + z2 = 144 and y = 12 B. x 2 + z2 = -63 and y = 12 C. x 2 + z2 = 81 and y = 12 D. x 2 + z2 = 225 and y = 12
Find the missing angle in the triangle.Two angles are 12° and 59°.
A. 289° B. 71° C. 19° D. 109°
Simplify the expression. First use the distributive property to remove any parentheses.7(y + 9)
A. 7y + 9 B. 7y + 16 C. 7y + 63 D. y + 63