Answer this question and I'll make u brainlisest and then can u make a pile of questions and make me brainliest??? Y/n? Hope u have a great day

The equation x2 – 1x – 90 = 0 has solutions {a, b}. what is a + b?

10 ! in a race, nick is 50 feet in front of jay after ten seconds. how fast can nick run, if jay can run 20 feet per second?

Acone is placed inside a cylinder. the cone has half the radius of the cylinder, but the height of each figure is the same. the cone is tilted at an angle so its peak touches the edge of the cylinder’s base. what is the volume of the space remaining in the cylinder after the cone is placed inside it?