Convert the following unit areas as indicated. Choose the right answer. 40 in.2 to cm2

Factorize: x^2+8x+10 i just solved it but i don't know if the process is correct

What is the correlation coefficient for the data? don't forget to turn the diagnoisticon (in the catalog menu of the calculator). r = answer (round to the nearest thousandth)

In trapezoid abcd, ac is a diagonal and ∠abc≅∠acd. find ac if the lengths of the bases bc and ad are 12m and 27m respectively.