Use even and odd properties of the trigonometric functions to find the exact value of the expression.sec (-?)

A. 0
B. undefined
C. -1
D. 1


Answer: C

Mathematics

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Provide an appropriate response.Which of the following statements is false?I. For a function f(x), the Taylor polynomial approximation can always be improved by increasing the degree of the polynomial.II. Of all polynomials of degree less than or equal to n, the Taylor polynomial of order n gives the best approximation of f(x).III. The Taylor series at x = a can be obtained by substituting x - a for x in the corresponding Maclaurin series.

A. I and II B. I, II, and III C. III only D. I and III

Mathematics

150 students in a math class take the final exam. The scores on the exam have an approximately normal distribution with mean ? = 65 and standard deviation ? = 10.The number of students scoring 65 points or more is approximately

A. 75. B. 95. C. 65. D. 50. E. none of these

Mathematics

Write a true sentence using either < or >.-27   -50

A. -27 < -50 B. -27 > -50

Mathematics

Use a calculator to evaluate the amortization formula for the values of the variables P = $25,000, r = 8%, n = 12, and t = 15 years. ? ?

A. $238.91 B. $166.67 C. $236.91 D. $234.91 E. $251.23

Mathematics