Which system has no solution?

A. y = - 3x + 8

6x + 2y = - 4.5

B. y = 9x + 6.25

- 18 + 2y = 12.5

C. y = 4.5x - 5

- 3x + 2y = 6

D. y = 3x + 9

x = 8y = 12.3

What is - 8 3/8 - (-12 4/5) simplified

Which expression is equal to (10x7) x8

The length of a rectangle is 9 inches and its perimeter is 48 inches. What is the width of the rectangle? A. Let x represent the unknown width of the rectangle. Write an equation that can be solved for the unknown measurement. B.

B=2.35+0.25x c=1.75x+0.40x b and c represent the price per pound, in dollars, of beef and chicken, x weeks after July 1 during last summer. What was the price per pound of beef when it was equal to the price per pound of chicken?

Preston can type 40 words per minute. if he types at that same rate, about how many words can preston type in 30 minutes?

Keith earns $44.00 in 3 hours. How much would he earn in 10 hours? A. $117.33 B. $146.67 C. $141.67 D. $88.00

Find the slope of the line 4x-7y=28

Find the value of k for which the quadratic equation 2x^-kx+=0 have equal roots

Pamela drove her car 99 km and used 9 L of fuel. she wants to know how many kilometers if you can drive with 12 L of fuel. she assumes the relationship between kilometers and fuel is proportional.

Find two consexutive odd integers such that the sum of their square is 650