What is the missing reason in the proof?
statements
| 1. ab || cd; bc || da
2. quadrilateral abcd is
ар
3. ab cd; bc - da
reasons
| 1. given
2. definition of parallelogram
4. acac
5. aabc - acda
3. opposite sides of a
parallelogram are
4. reflexive property
115.?

11. minitab software was used to find the lsrl for a study between x=age and y=days after arthroscopic shoulder surgery until an athlete could return to their sport. use the output to determine the prediction model and correlation between these two variables. predictor coef se coef t p constant -5.054 4.355 -1.16 0.279 age 0.2715 0.1427 1.9 0.094 r-sq = 31.16%

In priyas math class there are 10 boys and 15 girls. what is the ratio of boys to girls in priyas math class? express your answer as a decimal

If you are dealt 4 cards from a shuffled deck of 52? cards, find the probability that all 4 cards are diamondsdiamonds.