Decide whether the expression has been simplified correctly.(3b)8 = 3b8
A. No
B. Yes
Answer: A
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Find the indicated probability. Round your answer to 6 decimal places when necessary.In January in a certain city the unconditional probability of rain on any given day of the month is 0.400. But the probability of rain on a day that follows a rainy day is 0.600 and the probability of rain on a day following a nonrainy day is 0.250. Find the probability that January 1st and January 2nd are rainy and that January 3rd and 4th are not rainy given that December 31st was clear all day.
A. 0.072 B. 0.024 C. 0.045 D. 0.038
Solve the problem.Find the exponent that makes the equation true: 2r = 16,384
A. 28 B. 42 C. 12 D. 14
Solve using matrices. x - y + 4z = 33x + z = 2 x + 5y + z = 27
A. (0, 5, 2) B. (5, 2, 0) C. (2, 0, 5) D. (2, 5, 0)
Solve the problem.Ultraviolet radiation from the sun is thought to be one factor causing skin cancer. The amount of UV radiation a person receives is a function of the thickness of the earth's ozone layer which depends on the latitude of the area where the person lives. The following data represent the latitudes and melanoma rates for nine randomly selected areas in the United States. The melanoma rates refer to a three-year period. 
Graph the data on a scattergram treating latitude as the independent variable. Find an equation of the line containing the points 
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Express the relationship using the function name f. Graph the line on the scattergram. Interpret the slope of the line. Use the line to predict the melanoma rate of an area with a latitude of 32.5 degrees north. 
What will be an ideal response?