Mr. Kole has 30 students in his class. He has twice as many girls as boys. What is the ratio of boys to total students?

Is ab perpendicular to cd A (0,2) B (-3,-3) C (-4,1) D (0,-2)

The tens digit of a 2 digit number is twice the units digit. The sum of the digits is 12. Find the original number

What is 5 5/36 - 4 8/9? in simplest form if possible

Jesse purchase a full tank of gas on thursday. on Friday he took a road trip and used 1/2 of the tank. Saturday he did some errands and used an additional 1/3 of the tank. How much gas does Jesse have left.

The price of a movie increased from $15 to $18. By what percentage was the price of the video game increased?

40 dogs every 5 hours how may per hour

A box contains 9 green balls, 16 red balls, 9 white balls, and 6 pink balls. What is the probability of drawing a pink ball out of the box? A) 1/16 B) 3/20 C) 2/5 D) 7/8

Evaluate this expression: |-2.3|

Rafael earned a salary of 34,944 last year. How much did he earn per month? A.$416 B.$4992 C.$672 D.$2912

What is the solution to the quadratic equation? y = x^2-4