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Effectus [21]
3 years ago
9

Solve the system: x+4y=1 3x+5y=10

Mathematics
1 answer:
never [62]3 years ago
4 0

Answer:

x=6.25\\y=-1.25

Step-by-step explanation:

3x+5y=10\\x+3y=1\\\\

Second equation times 3:

3x+9y=3

1st equation minus equation above:

-4y=7\\y=-7/4

Insert to equation:

3x+\frac{-35}{4}=10\\12x-35=40\\12x=75\\x=75/12=6.25

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20m

Step-by-step explanation:

bc 22m rounded to the closest tenth is 20m.

<em>Hopes This Helps :)</em>

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3 years ago
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yKpoI14uk [10]
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3 years ago
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7 0
3 years ago
Find the largest rational number r for which 5r ≤ 33.
soldier1979 [14.2K]

Answer:

33/5 or 6.6

Step-by-step explanation:

Well the most 5r can be is 33, since it has the underline under it, so it's less than or equal to.

So set 5r equal to 33

5r = 33

Divide both sides by 33

r = 33/5

You can leave it in this form or convert it to a decimal which is 6.6

5 0
2 years ago
X + y = 7, for x<br><br><br><br><br><br> ....
Anuta_ua [19.1K]

Answer:

x = -y + 7

    or

x = 7 - y

Step-by-step explanation:

x + y = 7

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Since x is alone and y is a variable & not a number, there's nothing else to do to the equation.

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3 years ago
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