Solve the following equation for the variable x. Show your complete work (looking for exact steps not just the answer) 2+x+6-2+8= 24

Don't know how to find x given these segment lengths

Haruka hiked several kilometers in the morning. she hiked only 66 kilometers in the afternoon, which was 25% less than she had hiked in the morning. how many kilometers did haruka hike in all?

Find the perimeter of the triangle with vertices  d(3, 4),  e(8, 7), and  f(5, 9). do not round before calculating the perimeter. after calculating the perimeter, round your answer to the nearest tenth.