Arlene is showing her work in simplifying −7.9 + 8.2 − 3.4 + 2.1. Identify any errors in her work or in her reasoning. Write feedback to Arlene explaining the mistake she made and how to correct her work. StepWorkReasoning
−7.9 + 8.2 − 3.4 + 2.1Original problem
1−7.9 + 8.2 + (−3.4) + 2.1Additive inverse
2−7.9 + (−3.4) + 8.2 + 2.1Associative property
3(−7.9 + (−3.4)) + (8.2 + 2.1)Commutative property
4−11.3 + 10.3Simplify
5−1Simplify

If 1/√5+1/√5+1=p+q√r , find the values of p, q and r

Find the distance between (7,-6) and (-3,-9)

Abdul is making a map of his neighborhood he knows the following information: his home, the middle school, and high school are all on the same street. his home, the elementry school, and his friends house are on the same street. the angle between the elementary school, middle school, and his home is congruent to the angle between his friends house, the high school, and his home. what theorem can abdul use to determine the two triangles are similar? a- side side side similarity theoremb- angle angle similarity theoremc- corresponding parts of similar triangles are congruentd- pieces of right triangles similarity theorem