Find the mean.Following is a list of rainfall amounts for the past five months. Each amount is the total of rainfall in a month. Calculate the mean. Round to the nearest tenth when necessary. 4.2 in.
5 in.
2 in.
5 in.
1.8 in.
A. 3 in.
B. 3.6 in.
C. 4.2 in.
D. 5 in.
Answer: B
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Use the graph of the function f(x) to locate the local extrema and identify the intervals where the function is concave up and concave down.
A. Local minimum at x = 1; local maximum at x = -1; concave up on (-?, ?) B. Local minimum at x = 1; local maximum at x = -1; concave down on (0, ?); concave up on (-?, 0) C. Local minimum at x = 1; local maximum at x = -1; concave up on (0, ?); concave down on (-?, 0) D. Local minimum at x = 1; local maximum at x = -1; concave down on (-?, ?)
Solve by graphing.
A. (-3, 4) B. (-4, 3) C. Infinitely many solutions D. No solution
Determine whether the given set is disjoint or not disjoint. Consider the set N of positive integers to be the universal set, and let A = {n ? N| n > 50} B = {n ? N| n < 250} O = {n ? N| n is odd} E = {n ? N| n is even}A' ? B'
A. not disjoint B. disjoint
Solve the problem.While traveling at a constant speed in a car, the centrifugal acceleration passengers feel while the car is turning is inversely proportional to the radius of the turn. If the passengers feel an acceleration of 6 feet per second per second when the radius of the turn is 50 feet, find the acceleration the passengers feel when the radius of the turn is 100 feet.
A. 4 feet per second per second B. 3 feet per second per second C. 5 feet per second per second D. 6 feet per second per second