Use the fact that the trigonometric functions are periodic to find the exact value of the expression. Do not use a calculator.sec 
A. -2
B. -
C. 
D. - 
Answer: B
Mathematics
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Find the product.8x7(-7x3 + 5)
A. -16x7 B. -56x3 + 40 C. -56x10 + 40x7 D. -56x10 + 5
Mathematics
Evaluate the terms of the sum using the given information.x1 = 4, x2 = -5, x3 = 2, x4 = -2, and ?x = -0.6; f(x) = 3x2 - x
A. -26.4 - 48 - 6 - 8.4 B. 44 + 80 + 10 + 14 C. 14.4 - 18 + 7.2 - 7.2 D. 18.4 + 22 + 5.2 + 2.8
Mathematics
Rationalize the denominator and simplify.
A. 20
B. 3
C. 
D. 
Mathematics
Solve the problem.A painter needs to cover a triangular region 61 meters by 68 meters by 73 meters. A can of paint covers 70 square meters. How many cans will be needed?
A. 28 cans B. 3 cans C. 317 cans D. 14 cans
Mathematics