If the number 8.2×109 is written in standard notation, it is the number 82 followed by how many zeros?

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

Prove that 3: 8 is equivalent to 12: 32.a. use diagrams to support your answer.

1. are the triangles similar and if so why? what is the value of x? show your work.