The letters r and ? represent polar coordinates. Write the equation using rectangular coordinates (x, y).r = cos ?
A. x2 + y2 = y
B. (x + y)2 = x
C. x2 + y2 = x
D. (x + y)2 = y
Answer: C
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Graph the circle. State the center and radius of the circle.(x - 3)2 + y2 = 9
A. center (-3, 0); r = 3
B. center (0, 3); r = 3
C. center (3, 0); r = 3
D. center (0, -3); r = 3
Provide an appropriate response.3, 6, and 9 are multiples of which number?
A. 9 B. 6 C. 2 D. 3
Using the Law of Sines, find angle A and sides a and c if B = 38ø, C = 55ø, and b = 9.2.
a. A = 73ø, a = 14.9, and c = 9.2 b. A = 73ø, a = 9.2, and c = 7.55 c. A = 87ø, a = 14.92, and c = 12.33 d. A = 167ø, a = 14.92, and c = 15.10 e. A = 87ø, a = 7.55, and c = 14.92
Find a system of inequalities with the given graph.
A. y ? -x + 7 y ? 0 x ? 0 x ? 3 B. y ? -x + 7 y ? 0 x ? 0 x ? 3 C. y ? -x + 3 y ? 0 x ? 0 x ? 7 D. y ? -x + 7 x ? 3