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docker41 [41]
3 years ago
10

Which expression is the simplest form of -(3x+y)+2x-4y)?

Mathematics
1 answer:
denpristay [2]3 years ago
6 0

Answer:

<h3>C) - x - 9y.</h3>

Step-by-step explanation:

Given :  -(3x+y)+2(x-4y).

To find : which expression is the simplest form .

Solution : We have given

 -(3x+y)+2(x-4y).

Remove parenthesis

-3x -y + 2x -8y .

Combine like terms

-3x + 2x -y - 8y .

-x -9y.

<h3>Therefore, C) - x - 9y.</h3>
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Como se multiplican polinomios
seraphim [82]
I hope you speak english, because although i understood your question I don't know enough spanish to respond in it. You multiply polynomials by multiplying each part of one polynomial by all the other parts of the others, and then adding it all. For example: (ax+b) * (x+c) = (ax*x)+(ax*c)+(b*x)+(b*c) = a x^{2}  + acx + bx+bc

Comprehende? 
7 0
3 years ago
Olivia scored 82 points on the first mathematics test of the year. On the second mathematics test, she scored 78 points. What is
Kryger [21]

The percent of change in the number of points she scored between the first and second tests  = 4.878 %

<h3>What is percentage decrease?</h3>

If the data is decreasing,

Decrease = Original Number - New Number.

Then: divide the decrease by the original number and multiply the answer by 100.

% Decrease = Decrease ÷ Original Number × 100.

Given that:

The score of first Math test = 82

The score of second Math test = 78

Changes occurs in marks by=78-82

                                               =-4

So, there is decrease in marks.

We have to find the decrease percentage:

Decrease%= \frac{change \;in \;value}{Original\; value} *100

                   = \frac{4}{82} *100

                   = 0.04878 * 100

                  = 4.878 %

There is 4.88% decrease in Olivia's score.

Learn more about percentage decrease here:

brainly.com/question/10168902

#SPJ1

4 0
2 years ago
Amd the third is the last one i wont ask again
Musya8 [376]

Answer:

9.3

Step-by-step explanation:

2/.214

3 0
3 years ago
Which best describes reduced fractions that will always terminate?
lesya692 [45]

Answer:Which fraction is a terminating decimal when written in decimal form?

Step-by-step explanation:1+1=2

4 0
3 years ago
What is 1 divided by 5/2
Hunter-Best [27]
The answer is 0.4 or \frac{2}{5}
3 0
3 years ago
Read 2 more answers
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