Find the vertices of the hyperbola.36x2 - 9y2 - 72x - 90y - 513 = 0
A. (-4, 5) and (2, 5)
B. (-1, 11) and (-1, -1)
C. (-2, -5) and (4, -5)
D. (1, 1) and (1, -11)
Answer: C
Mathematics
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Simplify without using a calculator.811/4
A. 243 B. 3 C. 12 D. 36
Mathematics
Solve the problem.Roberto invested some money at 7%, and then invested $3000 more than twice this amount at 12%. His total annual income from the two investments was $4390. How much was invested at 12%?
A. $9000 B. $26,000 C. $2900 D. $29,000
Mathematics
Write as a percent. Round to the nearest tenth of a percent.
A. 0.5% B. 500% C. 50% D. 5%
Mathematics
Find the length s. Round the answer to three decimal places.
A. 4.188 yd B. 2.094 yd C. 7.639 yd D. 4.712 yd
Mathematics