a bag contains of 20 marbles in witch 4 are red, what is the probibility of pulling a red marble out of the bag? ( need simplifyed awnser )

Uestion 1(multiple choice worth 5 points) (05.02)alex wants to paint one side of his skateboard ramp with glow-in-the-dark paint, but he needs to know how much area he is painting. calculate the area of the isosceles trapezoid. isosceles trapezoid with top base 12 feet, bottom base of 18 feet, and height of 6 feet. 72 ft2 84 ft2 90 ft2 108 ft2

What are the excluded values? m+5/mn+3m

Solve the system of equations using the substitution method. {y=−3x+7x=−2y−16 enter your answers in the boxes.