Use the linear combination method to solve the system of equations. explain each step of your solution. 2x - 3y = 13 x + 2y = -4 can someone show me what the linear combination method is?

An eight-sided die, which may or may not be a fair die, has four colors on it; you have been tossing the die for an hour and have recorded the color rolled for each toss. what is the probability you will roll a brown on your next toss of the die? express your answer as a simplified fraction or a decimal rounded to four decimal places.

Aclassroom is made up of 11 boys and 14 girls. the teacher has four main classroom responsibilities that she wants to hand out to four different students (one for each of the four students). if the teacher chooses 4 of the students at random, then what is the probability that the four students chosen to complete the responsibilities will be all boys?

You buy a veido game for $60 and the sales tax is 8% what is the total cost for the game including the sales tax