I WILL MARK BRAINLIEST! Solve The Following Questions

What is (28 + 7 + 6 + 3) x 1/2 show your work

Girardo is using the model below to solve the equation . girardo uses the following steps: step 1 add 4 negative x-tiles to both sides step 2 add 1 negative unit tile to both sides step 3 the solution is which step could be adjusted so that gerardo's final step results in a positive x-value? in step 1, he should have added 4 positive x-tiles to both sides. in step 1, he should have added 3 negative x-tiles to both sides. in step 2, he should have added 4 negative unit tiles to both sides. in step 2, he should have added 1 positive unit tile to both sides.

Aramp rises 4 feet over a distance of 10 feet. what is the length of the ramp?