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zubka84 [21]
3 years ago
7

How to solve 2X^2+Y^2 = X^2-Y^2

Mathematics
1 answer:
arlik [135]3 years ago
5 0
   
2x^2+y^2 = x^2-y^2\\\\
2x^2 - x^2 + y^2 + y^2 = 0\\\\
x^2 + 2y^2=0\\\\
x^2 = 0~~~\Longrightarrow~~~\boxed{x=0}\\\\
2y^2 = 0~~~\Longrightarrow~~~y^2 = 0~~~\Longrightarrow~~~\boxed{y=0}\\\\





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Talja [164]

In monetary terms, you're making change. If you need more ones, you trade one 10 for 10 ones.

When I was in school, many years ago, we used small superscript-type numbers to show this:

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You'd have to look at the example problems that precede this page in order to see what the meaning of "magnifying glass" is.

6 0
3 years ago
A building in a city has a rectangular base. the length of the base measures 65 ft less than twice the width. the perimeter of t
dybincka [34]

By solving a system of equations, we will see that the width is 170ft and the length 275 ft.

<h3>How to get the dimensions of the base?</h3>

For a rectangle of length x and width y, the perimeter is:

P = 2*(x + y).

Here we know that:

x = 2y - 65ft

p = 890ft = 2(x + y)

So we have a system of equations.

To solve this, we need to replace the first equation into the second one:

890ft = 2(x + y)

890ft = 2(( 2y - 65ft) + y)

Now we can solve this for y.

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So the width is 170ft, and we know that:

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So the length is 275 ft.

If you want to learn more about systems of equations:

brainly.com/question/13729904

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5 0
1 year ago
Yall good at slope? if so, i need help
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Answer:

Undefined

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6 0
2 years ago
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Mika is a local farmer who is interested in how often residents in her town go to a farmer's market each month. She surveys 124
Murljashka [212]

Answer:

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5 0
3 years ago
Hector's service club is raising money by wrapping presents in the mall. The function f\left(x\right)=3xf(x)=3x describes the am
mestny [16]

Given:

The function f(x) describes the amount of money, in dollars, the club will earn for wrapping x presents.

f(x)=3x

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Substitute x=658 to find the value of f(658).

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It means, the club will earn $1974 for wrapping 658 presents.

Therefore, f(658)=1974.

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3 years ago
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