This table represents the proportional relationship between the number of boxes and the number of magnetic cubes held by the boxes. Cubes Boxes Number of cubes 1 n 5 625 8 1,000 What is the unknown value representing the unit rate?

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?

True or false? the sum of the differences (% - 7) is never zero for any distribution consisting of n observations.

Bradley is preparing a presentation to show the ceo of his company he wants to emphasize that the profits of their competitors have increased slowly over the past 16 months