Solve the problem.Find cos ?, given that cos 2? =   and ? terminates in quadrant I.

A.
B.
C.
D.


Answer: A

Mathematics

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Find the first five terms of the sequence with the given general term.an = 3n- 1

A. 4, 7, 10, 13, 16 B. 2, 3, 4, 5, 6 C. -2, -5, -8, -11, -14 D. 2, 5, 8, 11, 14

Mathematics

Find the probability.A bag contains 6 cherry, 3 orange, and 2 lemon candies. You reach in and take 3 pieces of candy at random. What is the probability that you have at least 2 orange candies? Round to the nearest ten-thousandth.

A. 0.4909 B. 0.5758 C. 0.1515 D. 0.3362

Mathematics

One of the values r (radius), d (diameter), C (circumference), or A (area) is given for a particular circle. Find the indicated value. Leave ? in your answer.C = 40? cm; r = ?

A. 20? cm B. 80 cm C. 40 cm D. 20 cm

Mathematics

Solve by using the quadratic formula.4k2 - 35k - 9 = 0

A. - , 4
B. -4, 9
C. - , 9
D. , -  

Mathematics