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san4es73 [151]
3 years ago
6

Simplify expression 8n+4-6n/2

Mathematics
2 answers:
Nady [450]3 years ago
8 0

Answer:

n+2

Step-by-step explanation:

to  simplify this expression 8n+4-6n/2

we have,

{8n-6n + 4}/2

{2n + 4}/2

to further simplify this expression {2n + 4}/2 , we are going to factorize 2 from the numerator ,

we have

=2(n +2)/2

the next step to simplify the 2(n +2)/2 further is to use the factorised 2 at the numerator to divide the 2 at the denominator so that we can have a simplified expression.

we have

=2(n +2)/2

=n+2

therefore  the simplified form of the expression 8n+4-6n/2 is n+2

arlik [135]3 years ago
5 0

Step-by-step explanation:

8n+4-6n/2

8n+4-3n

5n+4

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if there are 200 questions and 4 marks for correct answers and -1 for incorrect answer and total marks is 250then what is the nu
Zanzabum

The number of questions answered correctly = 90.

<h3>What is a system of linear equations?</h3>
  • A system of linear equations is a set of two or more linear equations.
  • Linear equations refer to the equations that involve two or more variables in the form of "ax + b".

Now,

Given:

  • Total number of questions = 200
  • Marks for correct answer = 4
  • Marks for incorrect answer = -1
  • Total marks = 250

To find : Number of correct answers = ?

Finding:

Now, assuming that the student attempted and answered all the questions,

  • Let the number of questions correctly answered be x and incorrectly answered be y.

Then,

  1. x + y = 200 (For number of questions) (eqn 1)
  2. and 4x - y = 250 (For the marks scored) (eqn 2)

Solving the system of linear equations:

For eqn 2, we get that y = 4x - 250

Substituting in eqn 1, we get:

=> x + 4x - 250 = 200

=> 5x = 250 + 200 = 450

=> x = 90

That is, the number of questions answered correctly = 90, the incorrect answers = 200 - 90 = 110.

To learn more about system of linear equations, refer to the link: brainly.com/question/2226590

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8 0
1 year ago
What is 1/5 x 2/4 as a fraction
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Step-by-step explanation:

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After all that, this is how the problem should look now

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x²+5x-x+6/ (x-6)(x+5)

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