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ira [324]
3 years ago
10

When x=2 and y=4 what is value of 7x-y

Mathematics
2 answers:
shusha [124]3 years ago
5 0
You have to substitute each number in. So 7(2)-4=10
alexira [117]3 years ago
4 0

Answer:

10

Step-by-step explanation:

So what we are doing in this question is simple substitution

So x = 2, y = 4

7x - y

So lets split it up first

7x

7 * (2)

We plugged in 2 for x

This is equal to 14

So the equation is looking like

14 - y

Now lets do the second part

- y

- (4)

We plugged in 4 for y

So no our equation looks like

14 - 4

= 10

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What is the result of adding the system of equations? Equation 1: 2x + y = 4 Equation 2: 3x - y = 6 A) 5x = 10 B) x = 5 C) x = 1
Licemer1 [7]

An equation is formed of two equal expressions. The correct option is A, the sum will be equal to 5x = 10.

<h3>What is an equation?</h3>

An equation is formed when two equal expressions are equated together with the help of an equal sign '='.

Given the two systems of equations Equation1: 2x+y=4 and Equation 2: 3x-y=6. Now if the two of the given equations are added the result will be,

2x + y + 3x - y = 4 + 6

5x  = 10

Hence, the correct option is A, the sum will be equal to 5x = 10.

Learn more about Equation:

brainly.com/question/2263981

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8 0
2 years ago
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Answer:

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and

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Step-by-step explanation:

6 0
3 years ago
Please help me! I need it
Studentka2010 [4]

Answer:

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Step-by-step explanation:

By the law of sines:

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3 0
3 years ago
There are 80 pupils in a school. If 32 are boys, what percentage are boys?
maks197457 [2]

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Step-by-step explanation:

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8 0
2 years ago
Read 2 more answers
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Liono4ka [1.6K]

Answer:

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Step-by-step explanation:

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