Use the given information to find the exact value of the trigonometric expression.cos 2? = - 
; 
< 2? < ?
Find sin ?.
A. - 
B. 
C. 
D. - 
Answer: B
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Solve the problem.A textile company has specific dyeing and drying times for its different cloths. A roll of Cloth A requires 55 minutes of dyeing time and 45 minutes of drying time. A roll of Cloth B requires 70 minutes of dyeing time and 25 minutes of drying time. The production division allocates 2220 minutes of dyeing time and 1300 minutes of drying time for the week. How many rolls of each cloth can be dyed and dried?
A. 2 rolls of Cloth A, 47 rolls of Cloth B B. 20 rolls of Cloth A, 16 rolls of Cloth B C. 13 rolls of Cloth A, 38 rolls of Cloth B D. 9 rolls of Cloth A, 30 rolls of Cloth B
Factor completely.-7n3 + 7n2 + 14n
A. -7n(n - 2)(n + 1) B. 7n(n + 2)(n - 1) C. 7n(n - 2)(n + 1) D. -7n(n + 2)(n - 1)
Provide an appropriate response.Suppose a truck costing $36,000 is to be replaced at the end of 10 years, at which time it will have a resale value of $12,000. In order to provide money at the time for a new truck costing $40,000, a sinking fund is set up into which equal payments are placed at the end of every six months. If the fund earns 6% compounded semiannually, what should each payment be?
Fill in the blank(s) with the appropriate word(s).
Write the expression in the standard form a + bi.(5 + 7i)2
A. -24 + 70i B. 74 + 70i C. 25 + 70i + 49i2 D. -24