Find a formula for the nth term of the arithmetic sequence shown in the graph.
A. an = n + 2
B. an = n - 1
C. an = n - 2
D. an = n + 1
Answer: C
Mathematics
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Solve the given trigonometric equation by use of a graphing calculator. Use values of x for 0 ? x < 2?.3 - 4 cos x = 7 - (6 - cos x)
A. No solution B. 1.05, 5.24 C. 0.64, 5.64 D. 1.16, 5.12
Mathematics
Translate to an equation. Do not solve.17.6 is what percent of 56?
A. 17.6% = z × 56 B. 17.6 = z × 56% C. 17.6 × z = 56 D. 17.6 = z × 56
Mathematics
Indicate whether the statement is true always, sometimes, or never.The product of a pair of complex conjugates is a real number.
A. Never B. Sometimes C. Always
Mathematics
Solve the equation.
- 2 = 
A. x = 9 B. x = 81 C. x = -81 D. no solution
Mathematics