Why do we add the opposite when subtracting integers?

1/2. the difference of a number and 15

How many number lines comprise the basic parts of a cartesian coordinate system?

The last time brea played softball, she hit the ball 35% of the times she played bat. Based on the information, how many times will Brea hit the ball next time she plays softball is she is at bat 20 times

Jake made a wooden cone with a diameter of 6 inches and a height of 4.5 inches. What is the volume of this cone?

Equivalent l-12+3/?

Monica brought her turtle out the aquarium for 15 minutes every night for seven days how many total minutes did she broke gn her turtle out of the aquarium

V=s^2+1/2sh solve for h

A soccer field is bordered on three sides by a parking lot of width x. The total length of the field and parking lot is 300 m, and the total width is 200 m. The area of the field is 30,000 m2. How wide is the parking lot

In a beach volleyball league, the sea slugs won 3 of their first 10 matches. The team's sponsor has told them they will lose all funding if they don't win 60% of their matches.

Emma voluenteered at an animal sueltes for a total of 119 hours over 6 weeks. Estimare the Numbers of hours she volunteered racha week?