3 years ago

REALLY URGENT PLZ

Mathematics

1 answer:

Alex17521 [72]3 years ago

4 0

1.0.583333333332. 0.043.1

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Solve algebraically the simultaneous equations<br><br> X^2 + Y^2 =25<br> Y-2X = 5

Georgia [21]

Answer:

Therefore the solutions are

$x=0\\and\\ y =5\\\\Or\\\\x=-4\\and\\y=-3$

Step-by-step explanation:

Given:

$x^{2} + y^{2} =25$ .........( 1 )

$y-2x = 5\\y=2x+5$ ................( 2 )

To Find:

x = ?

y = ?

Solution:

Substituting ' y ' in Equation 1 we get

$x^{2}+(2x+5)^{2} =25$

Using identity (A+B)²=A²+2AB+B² we get

$x^{2}+4x^{2}+20x+25=25\\\\5x^{2}+20x=0\\5x(x+4)=0\\5x=0\ or\ x+4=0\\x=0\ or\ x= -4$

Now Substitute x =0 in equation 2 we get

$y=2\times 0+5=5$

Now Substitute x =-4 in equation 2 we get

$y=2\times -4+5=-3$

Therefore the solutions are

$x=0\\and\\ y =5\\\\Or\\\\x=-4\\and\\y=-3$

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4 years ago

Identify each graph as being a non-linear function, a linear function, or not a function.

KonstantinChe [14]

What are the 1-4 you have numbered? but to, summarize, if you can draw a vertical line and hit more than one point anywhere on the graph its not a function, so B, and if there are any bends or curves, but still is a function, it's a non linear function, like the other two.

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3 years ago

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nadya68 [22]

Explain the question?

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3 years ago

So the question is "Write down four common multiples of 2 and 3"<br> Step by step explaination :(

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Answer:

The common multiples of 2 and 3 are 6,12,18,24

Multiples of 2: 2, 4, 6, 8, 10, 12, 14, 16, 18, 20, 22, 24...

Multiples of 3: 3, 6, 9, 12, 15, 18, 21, 24, 27...

Common multiples of 2 and 3 include 6, 12, 18, and 24.

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3 years ago

Which function IS graphed below?

Marizza181 [45]

Answer:

first you write your full question then ,i will try.

Step-by-step explanation:

please give me brain list and follow

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