Solve each system by substitution.

(-3x + y = 20)

(-5x - 7y = - 10)

Three consecutive integers exist where the smallest is fifteen less than twice the larger. Find the integers

Tell which number is greater 27/50,27%

The variable z varies jointly with x and y. Also, z=-75 when x=3 and y=-5 what is the constant of variation

X^3-7x^2y+13xy^2+5y^3/x-2y

Abcd is similar to wxyz. rectangle abcd has a length of 8 inches and height of 5 inches. wxyz has a height of 3ft what is the length in inches

What is the degree of a polynomial that has roots of - 2, 4i and - 4i?

What is the x value in the solution to the system of linear equations 2x - y = 11 and x + 3y = - 5

How do you find the tangent of a circle?

Greatest common factor of 15 and 30 and 45

Assume that the following confidence interval for the difference in the mean time (in minutes) for male students to complete a statistics test (sample 1) and the mean time for female students to complete a statistics test (sample 2) was constructed