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2 years ago

X = 12 − y 2x + 3y = 29

1 answer:

4 0

So if these are simultaneous equations here are the steps:

Bring the variables to one side and the constants to the other side of the equal sign. Remember if you bring anything to the other side it’s sign has to change:

x + y = 12
2x + 3y = 29

Now multiply a variable on the top equation so that it will be equal with the variable on the second:

3x + 3y = 36
2x + 3y = 29

Now subtract the equations which gets you:

x = 7

So we know what the x is, now we have to substitute the x in an equation we created; we’ll go with x + y = 12:

x + y = 12

= 7 + y = 12

Now bring the variable to one side and constants to the other like we did before (remember, the sign must change if the constant or variable is moved to different sides of the equal sign):

y = 12 - 7, which would equal y = 5.

So our answer would be:

( x, y ) = ( 7, 5 )

Hope this helps have an awesome day!

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2 years ago

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enot [183]

Answer:

$\large\boxed{y=\dfrac{1}{2}x-3}$

Step-by-step explanation:

The slope-intercept form of an equation of a line:

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The formula of a slope:

$m=\dfrac{y_2-y_1}{x_2-x_1}$

We have two points (2, -2) and (4, -1).

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$m=\dfrac{-1-(-2)}{4-2}=\dfrac{-1+2}{2}=\dfrac{1}{2}$

Put the value of a slope and the coordinates of the point (2, -2) to the equation of a line:

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Finally:

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2 years ago

Marco is making three tiles pictures. he uses 310 green tiles to make each picture. he uses 50 fewer red tiles than green tiles

Anettt [7]

Hi there!

To solve this problem, we need to first find the amount of red tiles he used by subtracting 50 from 310, and then finding the sum of the two numbers.

310 - 50 = 260

Now, we know that there are 260 red tiles.

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So, the answer is 1710 tiles total.

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3 years ago

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Vinil7 [7]

Answer:

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Step-by-step explanation:

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Given that the side that is supposed to be a is currently √3, we know that the missing side x must be:

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x = (√3) * (√3)

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3 years ago

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Marat540 [252]

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