One positive number is 2 larger than another number. The sum of their squares is 52. Find the numbers.
A. 4, 6
B. 7, 8
C. 5, 7
D. 6, 7
E. 2, 4
Answer: A
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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 = 4 cos t, y = 4 sin t, ? ? t ? 2?
A. x2 + y2 = 1
Clockwise from (1, 0) to (1, 0), one rotation
B. x2 + y2 = 16
Counterclockwise from (-4, 0) to (4, 0)
C. x2 + y2 = 16
Clockwise from (4, 0) to (-4, 0)
D. x2 + y2 = 16
Counterclockwise from (4, 0) to (4, 0), one rotation
Plot the point in the rectangular coordinate system.(1.5, -6.5)
A. 
B. 
C. 
D. 
Find the exact value of the expression.sin 20° cos 100° + cos 20° sin 100°
A. 
B. 
C. - 
D. - 
Find the surface area generated by rotating the lemniscate r² = 10cos2? about the line ?= ?.
What will be an ideal response?