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

Jonathan can type 20 documents in 40 minutes ,and susan can type it in 30 minutes and jack can type it in 24 minutes working together ,how much time will it is take them type the same document

Select the conic section that represents the equation. 3x2 + 3y2 -2x + 4 = 0

The equation y= -16t^2+120 can be used to represent the fridge height above the ground where ti represents time in seconds after she threw the apple how long does it take the apple to hit the ground running your