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olga nikolaevna [1]
3 years ago
5

Solve the system of equations using elimination. 2x + y = 9 8x – 2y = 6

Mathematics
1 answer:
Anika [276]3 years ago
4 0
<span>(1) 2x + y = 9
</span><span>(2) 8x – 2y = 6
</span>
You can eliminate the x or the y. I am going to eliminate the y

First multiply the first equation 2x + y = 9  by 2.
2x + y = 9
2(2x + y = 9)
4x +2y = 18
Now we have a new equation that we can use and we can eliminate the y from the other equation because +2y - 2y = 0. Lets do that now and solve for  x.

4x +2y = 18
8x – 2y = 6
12x = 24
12x / 12 = 24 / 12
x = 2
So we found the value of x, which is 2. To find y, insert 2 into one of the original equations. I am going to use 2x + y = 9
2x + y = 9
2(2) + y = 9
4 + y = 9
-4 + 4 + y = 9 - 4
y = 9 - 4
y = 5
y = 5.

Our point is at (x, y) = (2,5)
x = 2
y = 5

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8 0
2 years ago
In the figure below, if the radius of circle o
Aliun [14]

Answer:

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Step-by-step explanation:

In the given circle O

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→ That means OB and AC are equal in lengths

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5 0
2 years ago
What’s the answer because I need to know the answer
Alex787 [66]

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7 0
3 years ago
Read 2 more answers
A field has a length of 12 m and a diagonal of 13 m what is the width?
kvv77 [185]
Do Pythagorean Theorem because a rectangle divided in diagonals form right triangles
A^2+b^2=C^2
Plug in the correct numbers and solve
A and B can be switched around but C is always the longest diagonal side which is called the hypotenuse not the Adjacent sides that form a right angle
So with correct solving you should get 5.
7 0
3 years ago
Please help me I need help
snow_tiger [21]

d = 16.76 inches

Step-by-step explanation:

We can extend the definition of the Pythagorean theorem to 3-dimensions:

d =  \sqrt{ {x}^{2} +  {y}^{2}  +  {z}^{2}  }

Let x = 10 in

y = 10 in

z = 9 in

d =  \sqrt{ {(10)}^{2} +  {(10)}^{2}  +  {(9)}^{2}  }

d =  \sqrt{281}  = 16.76 \: in

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2 years ago
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