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valkas [14]
3 years ago
9

Renan found the sum (4.2x + 3) + (5.7x – 2) + (5 – 2.6x), as shown.

Mathematics
2 answers:
abruzzese [7]3 years ago
4 0

Answer:

He used the commutative property incorrectly.

Step-by-step explanation:

meriva3 years ago
3 0

Answer:

The answer is 7.3x+6

Step-by-step explanation:

Given the expression

(4.2x + 3) + (5.7x – 2) + (5 – 2.6x),

Let us repeat the solution and compare our answer to that of Renan's to validate Renan's claims

(4.2x + 3) + (5.7x – 2) + (5 – 2.6x),

Let us open up brackets

4.2x + 3+ 5.7x – 2 + 5 – 2.6x

Collecting like terms we have

4.2x+5.7x-2.6x+3-2+5

7.3x+6

The answer is 7.3x+6

From Renan's solution in line 2 the third term is meant to be -2.6x and not +2.6x

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Solve 4x – 2(x + 1) = 3x + 10.
kramer

Answer:

x=-12

Step-by-step explanation:

4x−2(x+1)=3x+10

Step 1: Simplify both sides of the equation.

4x−2(x+1)=3x+10

4x+(−2)(x)+(−2)(1)=3x+10(Distribute)

4x+−2x+−2=3x+10

(4x+−2x)+(−2)=3x+10(Combine Like Terms)

2x+−2=3x+10

2x−2=3x+10

Step 2: Subtract 3x from both sides.

2x−2−3x=3x+10−3x

−x−2=10

Step 3: Add 2 to both sides.

−x−2+2=10+2

−x=12

Step 4: Divide both sides by -1.

−x/−1=12/−1

x=−12

Answer:

x=−12

5 0
3 years ago
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Answer:

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8 0
3 years ago
What is the mean and mode of the data set shown below? {2, 4, 5, 6, 8, 2, 5, 6}
likoan [24]
The average is calculated by adding all numbers and dividing by the count:

(2+4+5+6+8+2+5+6)/8 = 38/8 = 4.75

The mode is the number that occurs most often, however, this is the case for 2, 5 and 6. A data set can have multiple modes. 2, 5 and 6 are modes.
4 0
3 years ago
4325 X 32, 5492 X 44
frutty [35]

Step-by-step explanation:

4325 * 32 = 138,400

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I have provided work to show how you would complete these problems. The work will be found in the attachments below.

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What is 33.153 rounded to the nearest tenth?
EastWind [94]

Answer:

33.15 that is the answer

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2 years ago
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