Determine if the given set of whole numbers is closed under addition.{n ? N|n ? 35}
A. Closed
B. Not closed
Answer: B
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Find the equation of the line through (6,-6,6) and perpendicular to the plane -x+2y+5z=12.
What will be an ideal response?
Use algebraic and/or graphical methods to solve the inequality.
> 
A. -7 < x <- 
B. No solution
C. x < -7 or x > - 
D. 
< x < 7
Find the equation of the axis of symmetry of the parabola.f(x) = 4x2 - 56x + 198
A. x = -7 B. x = 2 C. x = -2 D. x = 7
After a wind storm, a farmer notices that his 36-foot windmill may be leaning, but he is not sure. From a point on the ground 32 feet from the base of the windmill, he finds that the angle of elevation to the top of the windmill is 49°. Is the windmill leaning? If so, what is the acute angle the windmill makes with the ground? ?
A. Yes; it makes an angle of 89° with the ground B. Yes; it makes an angle of 86° with the ground C. Yes; it makes an angle of 87° with the ground D. Yes; it makes an angle of 90° with the ground E. No, it is not leaning.