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Damm [24]
3 years ago
7

Which is equivalent to the following expression? (2x^2+4xy-y^2)+(x^2+3xy-y^2)

Mathematics
2 answers:
ss7ja [257]3 years ago
7 0

Answer:

I agree with Lisboa The answer is C

Step-by-step explanation:


Karo-lina-s [1.5K]3 years ago
3 0

Answer C : 3x^2+7xy-2y^2

equivalent to the following expression

(2x^2+4xy-y^2)+(x^2+3xy-y^2)

2x^2+4xy-y^2+x^2+3xy-y^2

Combine like terms

2x^2+x^2+4xy+3xy-y^2-y^2

2x^2 + x^2 is 3x^2

4xy+3xy is 7xy

-y^2-y^2 is -2y^2

So expression becomes

3x^2+7xy-2y^2

Answer  C is correct

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"at the end of the year Juan has $52.71 more than 4 times his balance at the beginning of the year if his ending balance was $17
Salsk061 [2.6K]
At the end of the year, Juan has 52.71 more than 4 times his balance at the beginning. Okay, let's set this up.

4x + 52.71
(4 times) (52.71 more)
His ending was 172.90, so
4x + 52.71=172.90
4x= 120.19
x= 30.05
He had $30.05 at the beginning of the year.
8 0
3 years ago
The Pythagorean Theorem- Find the Missing Length:
drek231 [11]

The miles he drove North on Avenue B is 24 miles.

<h3>What is Pythagoras theorem? </h3>

According to the Pythagoras theorem, the square of the hypotenuse is the sum of the square of the opposite sides.

The Pythagoras theorem: a² + b² = c²

Where:

  • a = length
  • b = base = 7 miles
  • c = hypotenuse = 25 miles

<h3>How many miles did he drive north of Avenue B? </h3>

25² - 7²

625 - 49 = 576

√576 = 24 miles

Please find attached the required diagram. To learn more about Pythagoras theorem, please check: brainly.com/question/14580675

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2 years ago
Which expression represents 5 less thann twice
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Answer:

2x -5, like that you didn't put enough.

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Explanation: I plugged it into a graphing calc!

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