What does h equal if 6h+7=-8-h? pleas explain and show steps thx(:

One hectometer is a) 1/1000 of a meter. b) 1/100 of a meter. c) 10 meters. d) 100 meters. e) 1000 meters.

What is the greatest number of parts of a circle that can be formed by cutting the circle with 7 straight cuts? (note: the parts do not have to be equal in size)

Atriangle has side lengths of x, x+11, and 3x+5. what is the perimeter?