subject
Mathematics, 21.11.2020 04:20 brendaesme

WILL GIVE BRAINLIEST - 6TH GRADE MATHEMATICS Angie is showing her work in simplifying −7.9 + 8.2 − 3.4 + 2.1. Identify any errors in her work or in her reasoning.

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 + 2.1Commutative property
3[−7.9 + (−3.4)] + (8.2 + 2.1)Associative property
4−11.3 + 10.3Simplify
5−1Simplify
She did not make any errors.
Step 1: She wrote −3.4 incorrectly as + (−3.4).
Step 2: She identified changing the order of the numbers as the commutative property, which is incorrect.
Step 3: She identified changing the grouping of the numbers as the associative property, which is incorrect.

ansver
Answers: 3

Another question on Mathematics

question
Mathematics, 21.06.2019 18:20
The first-serve percentage of a tennis player in a match is normally distributed with a standard deviation of 4.3%. if a sample of 15 random matches of the player is taken, the mean first-serve percentage is found to be 26.4%. what is the margin of error of the sample mean? a. 0.086% b. 0.533% c. 1.11% d. 2.22%
Answers: 1
question
Mathematics, 21.06.2019 19:00
The pyramid shown has a square base that is 24 centimeters on each side. the slant height is 16 centimeters. what is the lateral surface area?
Answers: 2
question
Mathematics, 21.06.2019 21:30
50 people men and women were asked if they watched at least one sport on tv. 20 of the people surveyed are women, but only 9 of them watch at least one sport on tv. 16 of the men watch at least one sport on tv. make a a two-way table and a relative frequency table to represent the data.
Answers: 3
question
Mathematics, 21.06.2019 21:50
Which value of y will make the inequality y< -1 false?
Answers: 2
You know the right answer?
WILL GIVE BRAINLIEST - 6TH GRADE MATHEMATICS Angie is showing her work in simplifying −7.9 + 8.2 −...
Questions
question
Mathematics, 04.02.2020 20:48
question
English, 04.02.2020 20:48
Questions on the website: 13722359