19. use gauss-jordan elimination to solve the following system of equations. 3x + 5y = 7 6x − y = −8

answer: the first one

step-by-step explanation: use a calculator and divide the minutes by the dollars.

answer: domain and range mean all possible values of x and y that could be substituted to the inequality. a solution means all possible values that make the inequality statement true. so while the range is still all real numbers, the solution is the shaded area, for which y will always be greater than the line of the function.

in problems involving proportions, we can use cross products to test whether two ratios are equal and form a proportion. to find the cross products of a proportion, we multiply the outer terms, called the extremes, and the middle terms, called the means.

hope it

definitely a. the others have almost all data points on one side of the line.

step-by-step explanation: