Write the proofs in 2-column form. I really need these answered very soon. Please help!!

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?

Simplify each expression. use positive exponents. show work . (x –2 y –4 x 3 ) –2

Do xuan nam isgoing to invest $1000 at a simple interest rate of 4% how long will it take for the investment to be worth $1040?