How many solutions do these systems of equations have?

1) x=-4y+4 and 2x+8y=8

2) y=4x+3 and 2y-8x=3

3) x-3y=15 and 3x-9y=45

4) y-5x=-6 and 3y-15x=-12

Someone is measuring two line segments, the first one is 49 centimeters long. The second one is 540 millimeters long. How long in centimeters are the two line segments?

Find the y-intercept for the function g (x). g (x) = - 2.9 (6) x

If you have an eight foot ramp, and the truck bed is two feet above the ground, how far from the door should the truck park?

Aphrodite traveled 144 leagues in 12 days. Then she doubled her rate. How long would it take her to travel 168 leagues at this new speed?

Neil needs to mail a CD to friend. he uses 40-cent stamps and 7-cent stamps to pay $2.56 in postage. how many of each stamp did he use

If h (x) = x+1, which option below give the formula for g

This table shows the area in inches of four rectangular scraps of fabric. What is the median Scrap Area (in²) A 84 B 72 C 80 D 84 of the sizes of the four scraps of fabric?

3x2 y4 z - 6xy - 3z (5x2) How many terms are in the expression? a. 1 b. 2 c. 3 d. 4

11 1/2 - 4 3/4 = ? I got 7 3/4 but i know that is wrong but I don't know how to do this problem?

Evaluate the expression x^2+5x-19 for x=-4