1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
inna [77]
3 years ago
6

Matt is showing his work in simplifying (6.2 − 1.6) − 4.4 + 7.8. Identify any error in his work or reasoning. Step 1: (6.2 − 1.6

) − 4.4 + 7.8 Step 2: 6.2 + (− 1.6 − 4.4) + 7.8 (commutative property) Step 3: 6.2 − 6 + 7.8 Step 4: −14 − 6 = 8 (commutative property) Step 5: 14 − 6 = 8
(a)-He wrote commutative instead of distributive in Step 4.
(b)-He wrote commutative instead of distributive in Step 2.
(c)-He wrote commutative instead of associative in Step 4.
(d)-He wrote commutative instead of associative in Step 2.
Mathematics
1 answer:
Black_prince [1.1K]3 years ago
8 0

Answer:

The correct option is (d)-He wrote commutative instead of associative in Step 2.

Step-by-step explanation:

Commutative property: a+b=b+a

Associative property: (a+b)+c=a+(b+c)

Now consider the provided expression.

(6.2 − 1.6) − 4.4 + 7.8

Step 1

(6.2 − 1.6) − 4.4 + 7.8

Step 2 Use Associative property

6.2 + (−1.6 − 4.4) + 7.8

Step 3: Simplify

6.2 − 6 + 7.8

Step 4: Use commutative property

14 − 6

Step 5: Simplify

14 − 6 = 8

Hence, the wrong step is step 2. He wrote commutative instead of associative in Step 2.

Therefore, the correct option is (d)-He wrote commutative instead of associative in Step 2.

You might be interested in
Help me ASAP please
Fofino [41]

Answer:

it is .42 how I know is because I looked at the graph

Step-by-step explanation:

first I look at the school side

next I look at the car and get rid of it because it says  middle school

then I get rid of bus and other

6 0
3 years ago
Read 2 more answers
In a bakery, a bag of bread rolls cost x dollars. A loaf of multi-grain bread costs $2 more than a bag of bread rolls. Mr. Lopez
Vaselesa [24]

Step-by-step explanation:

Cost of bag of bread rolls is x

Multigrain is (+2) more.

So (x+2)

Y can be the number of multigrain loves Mr. Lopez buys.

Answer: y=50/(x+2)

6 0
2 years ago
Put the following equation in slope-intercept form: 2x+4y=12
guajiro [1.7K]
Y=-1/2x+3 is the slope intercept form.
4 0
3 years ago
A rectangular soccer field is 80 meters wide and 110 meters long. The coach asks players to run from one corner of the field to
seraphim [82]

Answer:

Step-by-step explanation:

Goven the length of the field = 110m

Width = 80m

The length of the diagonal is expressed using the pythagoras theorem;

d² = l² + w²

d² = 110² + 80²

d² = 12100 + 6400

d² = 18500

d = √18500

d = 136.01

Hence the players have to run 136.01m diagonally

7 0
3 years ago
What is ___x5=20 3x _____=6 2+ ____=16 3x____=24 9x____=34 12+____=2
nydimaria [60]

Answer:

4×5=20

3×2=6

2+14=16

3×8=24

9×4=36, 36 -2 = 34

12+(-10) =2

4 0
2 years ago
Other questions:
  • What times what equals 900?
    6·2 answers
  • PLEASE HELP god bless Justify each step of the solution by stating the property that was used to get to each step. Given: 4(-6x
    10·1 answer
  • Perform the indicated operation 1/3 divide 3/8
    10·2 answers
  • An amphitheatre has 23 seats in the first row, 25 in the second, 27 in the third, and so on, for 32 rows. How many seats are in
    10·1 answer
  • What is the step by step process of multiplying matrices?
    7·1 answer
  • Plssssssss Help!!!!!!
    7·2 answers
  • What is the value of 2 - (- 2 - 2) - (-2-(-2-2))?​
    6·2 answers
  • Helppp and explain plsssssssssssssss!!!!!!!!!!!!!!!!
    12·1 answer
  • An online company earns $4365.90 perday. How much does it earn per second
    5·2 answers
  • What is the value of the last digit in 3,500.45
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!