Add or subtract. Write the answer in lowest terms.
- 
A. 
B. 
C. 
D. 
Answer: B
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Provide an appropriate response.Determine all of the critical points of f(x, y) = x3 + 3x2 - 9x + y3 - 12y. Also use the second derivative test to determine, if possible, whether a maximum, minimum or saddle point occurs at each of these critical points.
What will be an ideal response?
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 planet has a perihelion of 565.6 million miles and a mean distance of 568 million miles, write an equation for the orbit of the planet around the sun.
A. 
+ 
= 1
B. 
+ 
= 1
C. 
+ 
= 1
D. 
+ 
= 1
Find the unknown side of the right triangle. Use a calculator or square root table when necessary and round to the nearest thousandth.
A. 8 mi B. 9 mi C. 10 mi D. 7 mi
Decide whether or not the ordered pair is a solution to the equation.x + y = 9; (3, 6)
A. Yes B. No