If 3x + 8 =5x, then 13x =?

Match the term on the left with its image or description on the right. match term definition diameter a) circle a and a line segment connecting points b and c which are on the circle. circumference b) circle a and a line segment connecting points b and c which are on the circle. radius c) a piece of the circumference of a circle secant d) two circles that share the same center. concentric circles e) the distance around a circle arc f) a segment between two points on a circle that passes through its center

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

Arectangle has a width of 5 cm and a length of 10 cm. if the width is increased by 3, how does the perimeter change?