Triangle DEF has sides DE = 12, EF = 6, and DF = 8. Is triangle DEF congruent to triangle ABC? Show your work using the distance formula.

What is the product? (x2+3y+7) [yy+1)

If the ratio of sum of the first m and n terms of an ap is m2 : n2 , show that the ratio of its mth and nth terms is (2m − 1) : (2n − 1).

A. use the formula for continuous compounding with the original example: $1000 invested at 2% for 1 year. record the amount to 5 decimal places. use a calculator. b. compare it to the result using the original compound interest formula with n = 365 calculated to 5 decimal places. which has a larger value? explain.