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Nesterboy [21]
3 years ago
7

Solve the system of linear equations by elimination -x+y=4;x+3y=4

Mathematics
1 answer:
mamaluj [8]3 years ago
3 0

Answer:

the solution is (-8, 4)

Step-by-step explanation:

Let's use the addition/subtraction method here to eliminate one variable:

-x+y=4

x+3y=4

Combining these two equations results in

4y = 8, so that y = 2.  Substituting y = 2 into the second equation, we get:

x + 3(2) = 4, or x = -2.

Then the solution is (-8, 4)

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F (x) = -4x + 4<br> f(2)=
sp2606 [1]

<em>Substitute x = 2 as we get</em>

<em>f(2) = -4(2)+4 = -8+4 = -4</em>

<em>Therefore, f(2) = -4</em>

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3 years ago
8y : 10y in its simplest form
Harrizon [31]
4y:5y would be the simplest form 
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Please help simplify this...
juin [17]
Answer is 36.
First use the negative exponent rule. When a number is put to the negative power it becomes a fraction
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Now multiply 4 x 9 (dividing by 1/9 is the same as multiplying by 9)

4 x 9= 36
5 0
3 years ago
69 rounded to the nearest ten
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70......................
6 0
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