Solve the problem.A student earned scores of 85, 83, 90, 94, 88, and 84 on the first six tests in a biology class. What score is needed on the seventh test to result in an average score of 86?
A. 79
B. 80
C. 78
D. 81
Answer: C
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Answer the question(s) based on the following situation: Over the last 80 years records have been kept of the annual rainfall in the Tasmanian desert. The distribution of annual rainfall is approximately normal and has no outliers. The minimum of 4.5 inches of rain occurred in 1952; the maximum of 11.7 inches of rain occurred in 1934.Two years ago, the annual rainfall was 7.5 inches. The standardized value corresponding to this rainfall is approximately
A. 1. B. 2.5. C. -0.5. D. 0. E. none of these
Solve the problem.The distribution of bachelor degrees conferred by a local college is listed below, by major. Major FrequencyEnglish2073Mathematics2164Chemistry318Physics856Liberal Arts1358Business1676Engineering 8689313What is the probability that a randomly selected degree is not in Mathematics?
A. 0.682 B. 0.232 C. 0.303 D. 0.768
Use the given information to find the exact value of the trigonometric expression.sin ? = 
; The terminal side of ? lies in Quadrant II.
Find tan 2?.
A. 
B. 
C. - 
D. - 
Simplify the complex fraction.
A. 
B. 
C. 
D. 