This isosceles triangle has two sides equal length, a, that of the length of the base, b. the perimeter of the triangle is 15.7 centimeters. the equation 2 + .7 can be used to find the side lengths. if one of the longer sides is 6.3 centimeters, what is the length of the base?

The bottom of ignacio's desktop is 74.5cm from the floor. ignacios sits in his adjustable chair, and the tops of his legs are 49.3cm from the floor. each clockwise rotation of the knob on the chair raises ignacio's legs by 4.8cm. write an inequality to determine the number of clockwise rotations, r, ignacio could make with the knob without his legs touching the desk.