Solve the problem.Find the slope of the tangent to the curve of the intersection of the cylinder 
and the plane y = -9 at the point 
A. 2
B. - 
C. 
D. 0
Answer: B
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Solve using the problem-solving strategy for systems of linear equations.The three angles in a triangle always add up to 180°. If one angle in a triangle is 72° and the second is 5 times the third, what are the three angles?
A. 72°, 89°, 19° B. 72°, 91°, 17° C. 72°, 88°, 20° D. 72°, 90°, 18°
A company installs 5,000 light bulbs. The lifetimes of the lightbulbs are approximately normally distributed with a mean of 500 hours and a standard deviation of 100 hours. Find the approximate number of bulbs that can be expected to last the indicated amount of time.Less than 690 hours
A. 4,855 B. 4,853 C. 4,860 D. 2,357
Factor the polynomial completely. If the polynomial is prime, so state.2y3 - 2y2 - 40y
A. (y - 4)(2y2 + 10) B. 2y(y - 4)(y + 5) C. 2y(y + 4)(y - 5) D. (2y2 + 8y)(y - 5)
The wages of the employees of a company are presented in this histogram. Answer the question.
How many employees earn at least $4 and less than $6 an hour?
A. 10 B. 20 C. 34 D. 22