Evaluate for the given values.x - z; x = 7.4, z = 0.83
A. -6.57
B. 6.57
C. 8.23
D. 6.47
Answer: B
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Verify that each equation is an identity.cot2x = (csc x - 1)(csc x + 1)
What will be an ideal response?
Estimate the sum as indicated. Then answer the question.Estimate the following sum by first rounding to the nearest ten. Does the estimate give you reason to doubt the stated sum?
A. Estimate: 180 ; yes B. Estimate: 140 ; yes C. Estimate: 160 ; no D. Estimate: 170 ; no
Find the sum of the finite geometric series.12 + 36 + 108 + 324 + 972
A. S5 = 2460 B. S5 = 1452 C. S5 = 480 D. S5 = 93
Determine the real solutions to the system of nonlinear equations.xy = 8x2 + y2 = 65
A. (-8, -1), (-1, -8), (-8, 1), (-1, 8) B. (8, 1), (1, 8), (8, -1), (1, -8) C. (8, 1), (-8, -1), (8, -1), (-8, 1) D. (8, -8), (-8, -1), (1, 8), (-1, -8)