What is the simplified form of 3.2g^2+5.7d-2.7d+5.7g^2-4.2d

The angle of a triangle are given as 6x,(x-3), and (3x+7). find x then find the measures of the angles

Isuck at math ; ^; m a student solved this problem and said the answer is 3 feet. chase had a roll of ribbon that contained 7 7/8  feet of ribbon. he cut off one piece that was 3 5/8  feet long and another piece that was 1 1/4  feet from the roll. how much ribbon was left on the roll? is the student's answer reasonable? yes, the answer is reasonable. no, the answer is not reasonable. it should be about 2 feet. no, the answer is not reasonable. it should be about 13 feet. no, the answer is not reasonable. it should be about 4 feet.

The figure shows the front of a building in the shape of a trapezoid. what is the area of this trapezoid? 102 ft² 132 ft² 168 ft² 204 ft²