Find the probability.The age distribution of students at a community college is given below.  Age (years)Number of students (f)1102?A student from the community college is selected at random. Find the probability that the student is at least 31. Round your answer to three decimal places.

A. 0.926
B. 0.074
C. 0.054
D. 82


Answer: B

Mathematics

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At what points is the given function continuous?f(x, y) = 

A. All (x, y) such that 7x + 8y ? 0 B. All (x, y) such that 7x + 8y ? 0 C. All (x, y) D. All (x, y) such that x + y ? 0

Mathematics

Solve the problem.The roof of a building is in the shape of the hyperbola  where x and y are in meters. Refer to the figure and determine the height, h, of the outside walls.A = 3 m

A. 7.5 m B. 11.2 m C. 56 m D. 3.3 m

Mathematics

Solve the inequality. Write the solution set in interval notation.6(x - 5) + x ? 7(x - 3) - 9

A. all real numbers B. (-?, 0) C. ? D. (30, ?)

Mathematics

The measures of two angles of a triangle are given. Find the measure of the third angle.43°, 69°

Fill in the blank(s) with the appropriate word(s).

Mathematics