Mathematics, 02.10.2019 04:30 Ariannamorales5355
Erica used friendly numbers to find 43-19. she added 1 to 19 and subtracted 1 from 43. what is erica's error?
Answers: 2
Mathematics, 21.06.2019 18:00, justijust500
Ijust need to see how to do this. so you don’t have to answer all of them just a step by step explanation of one.
Answers: 3
Mathematics, 21.06.2019 23:10, ylianafghgfdsnm1479
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?
Answers: 2
Erica used friendly numbers to find 43-19. she added 1 to 19 and subtracted 1 from 43. what is erica...