Which equation results from adding the equations in this system?

-2 x + y = 8.

5 x-y = - 5.

7x=13

7x=3

3x=3

3x=13

Solve the following inequality. - 21> - 7c

5.5 reversed the value of the number increases by 9 what is the answer

What is the slope of 6x+3

A 12 1/4 inch board is cut from a 34 3/4 inch board. The saw cut takes 3/8 inch. How much of the 34 3/4 inch board is left after cutting?

The graph below shows the velocity f (t) of a runner during a certain time interval: graph of line segment going through ordered pairs 0, 2 and 6, 8. Graph of another line segment going through ordered pairs 6, 8 and 8, 0.

Two fourths is how pieces of the whole

A ladder 13 feet long is leaning against a house. The base of the ladder is pulled away from the wall at a rate of 2 feet per second. How fast is the top of the ladder moving down the wall when its base is 5 feet from the wall?

A den has a circular rug. According to a small tag, the rug has an area of 50.24 square feet. What is the rug's diameter? Use 3.14 for .

Apply the distributive property to factor out the greatest common factor. 9+12n

Find the Four consecutive integers whose sum is 116.