Simplify the expression using the order of operations. Write the answer as an improper fraction where appropriate.82 + 62 ÷ 22
A. 104
B. 49
C. 25
D. 73
Answer: D
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Find the sum.Find the sum of the first 40 terms of the arithmetic sequence: -20, -12, -4, 4, . . .
A. 5600 B. 5440 C. 300 D. 5450
A certain tree grows by 2/t + e(-t2/2) feet per year, where t is the time in years. Use Simpson's rule with whole year intervals to estimate the total growth during the stated time interval.From t = 1 to t = 3
A. 3.5 ft B. 3.94664 ft C. 2.59378 ft D. 2.14706 ft
Use a graphing utility to solve the system of equations. Express the solution rounded to two decimal places.
A. x = 1.99, y = 0.13; x = 1.04, y = 1.70; x = -0.91, y = 2.95 or (1.99, 0.13), (1.04, 1.70), (-0.91, 2.95) B. No real solution exists. C. x = 1.18, y = 1.03; x = 1.07, y = 1.52; x = -0.91, y = 2.88 or (1.18, 1.03), (1.07, 1.52), (-0.91,2.88) D. x = 1.81, y = 0.28; x = 0.20, y = 2.45; x = -0.20, y = -2.45 or (1.81, 0.28), (0.20, 2.45), (-0.20, -2.45)
Write the number in scientific notation.0.0000035919
A. 3.5919 x 10-7 B. 3.5919 x 10-6 C. 3.5919 x 106 D. 3.5919 x 10-5