Anumber changed to 12.6 after it was rounded. to what place was the number rounded? explain how you know.

Find the length of the following tangent segments to the circles centered at o and o' whose radii are 5 and 3 respectively and the distance between o and o' is 12. what is the tangent segment of cd?

What is the value of x in the diagram below?

15m is what percent of 60m; 3m; 30m; 1.5 km? the last one is km not m