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amm1812
3 years ago
13

What’s the answer to 6x + 3y =

Mathematics
2 answers:
yaroslaw [1]3 years ago
5 0
The correct answer is 12
Alex73 [517]3 years ago
4 0

Answer:

The last answer; 12.

Step-by-step explanation:

In order to solve this, use substitution. Since it gives you an equation for y, substitute that equation in the other formula as y. This will give you:

6x+3(-2x+4)=?

Then simplify:

6x-6x+12=?

Since 6x - 6x cancels out, you are left with 12.

?=12\\


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andreev551 [17]

Answer:

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2) $200 + $50x

Step-by-step explanation:

1)

$200 (start up fee) + $50 * ( 1 month ) = $200 + $50 = $250

2)

$200 (start up fee) + $50 * ( x months ) = $200 + $50x

Hope this helps :)

5 0
3 years ago
36°<br> Diagram NOT<br> accurately drawn<br> Work out the size of angle y.
vovikov84 [41]
The angles in a isosceles triangle add up to 180 degrees.
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base angles in a isoceles triangle are equal so 144 divided by 2 = 72 degrees.
so to find out y you do 360 - 72 = 288 degrees
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3 0
3 years ago
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the answer would be c . $553.88

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A bag contains 12 red marbles The ratio of red marbles to blue marbles is 4:3?
Ostrovityanka [42]

There are 9 blue marbles.

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8 0
2 years ago
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x 4.5
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