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Alex777 [14]
2 years ago
9

Solve the system ... y=3x-8 and y=-9x+4

Mathematics
1 answer:
natita [175]2 years ago
7 0
1] y - 3x = -8
[2] y + 9x = 4

-3x + y = -8 9x + y = 4

Solve equation [2] for the variable y


[2] y = -9x + 4

// Plug this in for variable y in equation [1]

[1] (-9x+4) - 3x = -8
[1] - 12x = -12
// Solve equation [1] for the variable x


[1] 12x = 12

[1] x = 1
// By now we know this much :

y = -9x+4
x = 1
// Use the x value to solve for y

y = -9(1)+4 = -5

{y,x} = {-5,1}
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A license plate consists of two letters followed by two digits; for example, $MP78$. Neither the digits nor the letters may be r
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If in a number plate two different alphabets need to be selected then there are 650 such number plates that can be formed in such a way that the alphabets come in increasing order.

Given that a number plate can be formed using 2 alphabets which must come in increasing order.

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The number of plates will be equal to the number of ways in which two alphabets can be arranged.

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Learn more about combinations at brainly.com/question/11732255

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