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Dennis_Churaev [7]
2 years ago
11

What should be added to x2 +xy+y2 to obtain 3x2 - 4xy - y2​

Mathematics
1 answer:
Alex787 [66]2 years ago
4 0

Answer:

2x² - 5xy - 2y²

Step-by-step explanation:

Subtract x² + xy + y² from  3x² - 4xy - y² to obtain the expression to be added

3x² - 4xy - y² - (x² + xy + y² ) ← distribute by - 1

=3x² - 4xy - y² - x² - xy - y² ← collect like terms

= 2x² - 5xy - 2y²

Thus

adding 2x² - 5xy - 2y² to x² + xy + y² gives 3x² - 4xy - y²

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What set of reflections would carry hexagon ABCDEF onto itself?
Marianna [84]

When a set of reflections that carry a shape onto itself, it means that the final position of the shape will be the same as its original location

Reflections <em>(a) y=x, x-axis, y=x, y-axis </em>would carry the hexagon onto itself

First; we test the given options, until we get the true option

<u>(a) y=x, x-axis, y=x, y-axis</u>

The rule of reflection y =x is:

(x,y) \to (y,x)

The rule of reflection across the x-axis is:

(x,y) \to (x,-y)

So, we have:

(y,x) \to (y,-x)

The rule of reflection y =x is:

(x,y) \to (y,x)

So, we have:

(y,-x) \to (-x,y)

Lastly, the reflection across the y-axis is:

(x,y) \to (-x,y)

So, we have:

(-x,y) \to (x,y)

So, the overall transformation is:

(x,y) \to (x,y)

Notice that, the original and final coordinates are the same.

This means that:

Reflections <em>(a) y=x, x-axis, y=x, y-axis </em>would carry the hexagon onto itself

Read more about reflections at:

brainly.com/question/938117

4 0
2 years ago
H(1) = -26<br> h(n) = h(n-1) x (-9)<br><br> Find an explicit formula for h(n).<br><br> h(n)= ___
ValentinkaMS [17]

Answer:

you do not have to state explicitly which limit law(s) you are using. 1 - 5n ... Q: 9) n(x) = 2x - 2 g(x)= x2 + 5 Find h(g(1) A) 5 B) 10 C) 21 D) 40.

Step-by-step explanation:

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3 years ago
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belka [17]

Answer:

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Step-by-step explanation:

We can represent as the function

f(x)=28x+30

295=28x+30

265=28x

x=9.46

4 0
3 years ago
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9x+7y=7 find the slope
Jet001 [13]

Answer:

-9/7

Step-by-step explanation:

Put the equation into y = mx + b form, by first isolating y:

9x + 7y= 7

7y = -9x + 7

Divide each side by 7:

y = -9/7x + 1

So, -9/7 is the slope.

7 0
3 years ago
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What is set builder notation of[1, 3,5,39]​
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Answer:

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Step-by-step explanation: Hope this helps!

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