Solve the equation by the method of your choice. Simplify irrational solutions, if possible.x2 + 18x + 66 = 0

A. {-18 ± }
B. {-9 ± }
C. {9 ± }
D. {9 ± }


Answer: B

Mathematics

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Answer the question.The bar graph below shows the average cost of renting a studio in a certain city in each of the years 1994 through 1998. By what percentage does the average rental price increase from 1994 to 1995? Obtain a truncated version of the graph by sliding a piece of paper over the bottom portion of the graph so that the scale on the vertical axis starts  In the truncated graph, by what percentage does the price appear to increase from 1994 to 1995? Why is the truncated graph misleading?

What will be an ideal response?

Mathematics

Write the inequality using interval notation. Graph the inequality.x ? -7

A. (-?, -7)

B. (-7, ?)

C. (-?, -7]

D. [-7, ?)

Mathematics

Solve the problem. Round to the nearest hundredth of a percent if needed.The table below represents the number of deaths per 100 cases for an illness having a median mortality of four years and a right-skewed distribution over time. What is the probability of living more than 12 years after diagnosis of the disease?

A. 85.00% B. 15.00% C. 13.00% D. 19.00%

Mathematics

Find the center-radius form of the equation of the circle satisfying the given conditions.Center (-9, -10), passing through (-6, -6)

A. (x + 10)2 + (y + 9)2 = 9 B. (x + 9)2 + (y + 10)2 = 25 C. (x - 9)2 + (y - 10)2 = 25 D. (x - 10)2 + (y - 9)2 = 9

Mathematics