Find the indicated term.Find a1 when a17 = 67 and a12 = 42.
A. -8
B. 5
C. -13
D. -3
Answer: C
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Find functions f and g so that f ? g = H.H(x) = 
A. f(x) = 
- 9; g(x) = 
B. f(x) = 
, g(x) = x2 - 9
C. f(x) = x2 - 9; g(x) = 
D. f(x) = 
; g(x) = 
- 9
For the given compound inequality, state whether intersection or union should be used. Then give the solution set in both interval and graph forms.x ? -6 and x < 6
A. Intersection; [-6, 6)
B. Intersection; ?
C. Union; (-?, ?)
D. Intersection; [-6, ?)
Indicate whether the triangle is a right triangle, an acute triangle, or an obtuse triangle. Explain why.
A. right triangle; The measure of one angle is 90°. B. acute; The measure of each angle is less than 90°. C. obtuse; The measure of one angle is greater than 90°.
Use the frequency distribution to find the mean and the sample standard deviation. Does the data form a normal distribution? Remember: if the data fall within 2% of the empirical rule of 68%, 95%, and 99.7% for one, two, or three standard deviations, respectively, they form a normal distribution. Interval Midpointx Frequency f42.5 - 50.5 950.5 - 58.5 4558.5 - 66.5 20566.5 - 74.5 19074.5 - 82.5 4482.5 - 90.5 20
A. The mean is 62. The sample standard deviation is 9.2. The data doesn't form a normal distribution. B. The mean is 60. The sample standard deviation is 6.2. The data doesn't form a normal distribution. C. The mean is 60. The sample standard deviation is 6.2. The data forms a normal distribution. D. The mean is 67. The sample standard deviation is 7.7. The data doesn't form a normal distribution. E. The mean is 67. The sample standard deviation is 7.7. The data forms a normal distribution.