You notice that there are a lot of hot days in the city where you live. You gather data on the temperatures throughout the year. Let X be the average temperature on a given day. The distribution of X is below. x n 60 70 80
p n 0.3 0.2 0.5
What temperature can you expect for next Sunday, a potential beach day?

Statements reasons 1. ab ? cd; ad ? bc 1. given 2. ac ? ac 2. reflexive property 3. ? adc ? ? cba 3. ? 4. ? dac ? ? bca; ? acd ? ? cab 4. cpctc 5. ? dac and ? bca are alt. int. ? s; ? acd and ? cab are alt. int. ? s 5. definition of alternate interior angles 6. ab ? cd; ad ? bc 6. converse of the alternate interior angles theorem 7. abcd is a parallelogram 7. definition of parallelogram what is the missing reason in step 3?