Katie has 8 black marbles, 12 clear marbles, and 10 blue marbles in a bag. If she picks one at random, what is the probability that she will pick a black marble? (Enter your answer as a fraction in its reduced form.)

Which of the following graphs represents the line that passes through (3/2,2/3) and has an undefined slope

The length of a piece of lumber is 6.5 meters. How many centimeters is this?

Solve each equation by factoring m^2-5m=0

Simplify each expression completely. 1. 4 (-6) + 18 - 3^2 2. 10-7[3 + 2 (-8) ^2]

Frank's Football Gear is having a sale on helmets. The sales price, not including tax is $125.50. If the sale is 30% off all helmets, what is the regular price of the helmet to the nearest cent?

A farmer wants to plant three rectangular fields so that the widths are the same. The areas of the fields, in square yards, are given by the expressions 12x^2y, 9xy^2, and 21xy a) What is the GCF: b) What is the width of the fields if x=3 and y = 4?

An instructor was interested in seeing if there was a difference in the average amount of time that men and women anticipate studying for an introduction to statistics course in the summer.

Which of these are mathematical sentences? Check all that apply. O A. b + 41 = 93 OB. + 23 OC. 93 O D. 7y = 49

Solve the inequality - 2x2+8x >8

Find the vertices and foci of the hyperbola with equation quantity x plus 1 squared divided by 225 minus the quantity of y plus 5 squared divided by 400 = 1