Solve the problem.The resistance R produced by wiring resistors of R1 and R2 ohms in parallel can be calculated from the formula 
If R1 and R2 are measured to be 9 ohms and 5 ohms respectively and if these measurements are accurate to within 0.05 ohms, estimate the maximum possible error in computing R.
A. 0.027
B. 0.016
C. 0.022
D. 0.032
Answer: A
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Test the equation for symmetry with respect to the given axis, line, or pole.r = 2 - 2 cos ?;
polar axis
A. has symmetry with respect to the polar axis B. may or may not have symmetry with respect to the polar axis
Evaluate
Solve the problem.The orbit of a planet around a sun is an ellipse with the sun at one focus. The aphelion of a planet is its greatest distance from the sun, its perihelion is its shortest distance, and its mean distance is the length of the semimajor axis of the elliptical orbit. If a (hypothetical) planet has a perihelion of 563.4 million miles and a mean distance of 566 million miles, write an equation for the orbit of the planet around the sun.
A. 
+ 
= 1
B. 
+ 
= 1
C. 
+ 
= 1
D. 
+ 
= 1
Find the center (h, k) and radius r of the circle with the given equation. x2 + 14x + 49 + (y - 2)2 = 4
A. (h, k) = (2, -7); r = 2 B. (h, k) = (-7, 2); r = 2 C. (h, k) = (-2, 7); r = 4 D. (h, k) = (7, -2); r = 4