Find the period of the function.y = 3.5 cos ?x
A. 3.5
B. ?
C. 2
D. 2?
Answer: C
You might also like to view...
Solve the problem.A contractor is considering a sale that promises a profit of $31,000 with a probability of .7 or a loss (due to bad weather, strikes, and such) of $10,000 with a probability of .3. What is the expected profit?
A. $18,700 B. $21,000 C. $28,700 D. $21,700
Find the exact value under the given conditions.sin ? = 
, 0 < ? < 
; cos ? = 
, 0 < ? < 
Find cos (? + ?).
A. 
B. 
C. 
D. 
Write the first five terms of the arithmetic sequence.a1 = -23; d = 2
A. -15, -17, -19, -21, -23 B. -19, -17, -15, -13, -11 C. -23, -21, -19, -17, -15 D. -19, -21, -23, -25, -27
Perform the indicated operation.(-8x2 + 9x4 - 9) + (-5x3 + 6) - (-7x3 + 7x4 - 5x2)
A. 16x4 - 12x3 - 13x2 - 15 B. 2x4 - 12x3 - 13x2 - 15 C. 16x4 - 12x3 - 13x2 - 3 D. 2x4 + 2x3 - 3x2 - 3