Micha is riding his bike on a bike path. Micha's bike got a flat tire 3/4 of the way down the​ path, and he had to stop. How far did he ​ride?

Find the sum of 4x^{2} -4+6 and -7^{2} +3x+1

One of the same side angles of two parallel lines is 20° smaller than the other one. find the measures of these two angles.

The length of a shadow of the building is 36m. the length of the pole, which is perpendicular to the ground, is 1.9m. the length of the pole's shadow is 1.52m. what is the height of the building?