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Vedmedyk [2.9K]
3 years ago
14

What is the value of the x variable in the solution to the following system of equations?

Mathematics
1 answer:
Elden [556K]3 years ago
6 0
-2 (x-2y=-5)

-2x+4y=10
2x+3y=4
0+7y=14
/7. /7
y=2

2x+3 (2)=4
2x+6=4
-6. -6
2x=-2
/2. /2
x=-1

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Answer:

the third side is 40 m long

Step-by-step explanation:

The perimeter of the triangle is the sum of its three sides, and they give you what that value in meters is (120 m)

Your are given the length of two of them: 30 m and 50 m, and need to find the third one (let's call it "x" for this unknown side)

Now set the following equation:

Perimeter = side 1 + side 2 + side 3   --> replace these with the info you know

120 m = 30 m + 50 m + x   --> add 30 m and 50 m obtaining 80 m

120 m = 80 m + x  --> now solve for x (isolate the x on one side) by subtracting 80 m from both sides

120 m - 80 m = x  --> perform the subtraction 120 m - 80 m = 40 m

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Step-by-step explanation:

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2 years ago
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Answer:

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Again, in the 3rd year, his salary(a₃) will become ( a₂ +3000) per year.

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the answer is negative 4 have a nice day :)

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