Huck finn can paint a fence in 5 hours. after some practice, tom sawyer can now paint the fence in 6 hours. tom demands a half-hour break while huck continues to paint, and they finish the job together. how long does it take them to paint the fence?

Provide all steps given to find the answer. simplify: 5(2x+9)²

Two trains leave a station on different tracks. the tracks make an angle of 130°, with the station as a vertex. the first train travels 100 km and makes its first stop at point a, while the second train travels 200 km and makes it first stop at point b. how far apart are the trains when both are at their first stop? round the answer to the nearest integer. a) 65 km b) 139 km c) 224 km d) 275 km

Afootball is passed through the air and caught at ground level for a touchdown. the height of the ball (h) is given by h= -d² + 12d + 6, where d is the distance in feet the ball travels horizontally. how far from the player passing the ball will the ball be caught? 40 points! will mark brainliest!