Find the product.(-0.5)(-19.7)
A. 20.2
B. -19.2
C. 9.85
D. -20.2
Answer: C
Mathematics
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The letters r and ? represent polar coordinates. Write the equation using rectangular coordinates (x, y).r(1 - 2 cos ?) = 1
A. x2 + y2 = (1 + 2x)2 B. x2 + y2 = 2 + x C. x2 + y2 = 1 + 2x D. x2 + y2 = (2 + x)2
Mathematics
Solve the system by the addition method.
A. {(2, 3), (2, -3), (-2, 3), (-2, -3)} B. {(1, 3), (1, -3), (-1, 3), (-1, -3)} C. {(1, 3), (-1, -3)} D. {(2, -3), (-2, 3)}
Mathematics
Simplify using properties of exponents.
A. 54x1/3 B. 7x7/2 C. 7x7/6 D. 7x1/3
Mathematics
Convert the angle in degrees to radians. Express the answer in decimal form, rounded to two decimal places.-308°
A. -5.38 B. -5.35 C. -5.36 D. -5.37
Mathematics