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aniked [119]
2 years ago
14

Add expression -3x^2+ 2xy+ 4y^2, 11y^2+8x^2

Mathematics
2 answers:
ycow [4]2 years ago
5 0

<u>Solution:</u>

  • -3x^2+ 2xy+ 4y^2 + 11y^2+8x^2
  • => (-3x^2 + 8x^2) + (4y^2 + 11y^2) + 2xy
  • => (5x^2) + (15y^2) + 2xy
  • => 5x^2 + 15y^2 + 2xy

The simplified expression is 5x^2 + 15y^2 + 2xy.

slega [8]2 years ago
4 0

Answer:

Socratic app

Step-by-step explanation:

it will help you

You might be interested in
What is the greatest common factor of 22 and 2?
Snowcat [4.5K]

Answer:

2

Step-by-step explanation:

2 is 2.

22 is 2•11.

The GCF is 2.

6 0
3 years ago
So I'm currently doing online school due to external circumstances and haven't done this type of problem before. I need help fin
Ann [662]

Answer:

  DE ≈ 14.91

Step-by-step explanation:

Make use of the relationships between sides and angles in a right triangle. These are summarized by the mnemonic SOH CAH TOA:

  Sin = Opposite/Hypotenuse

  Cos = Adjacent/Hypotenuse

  Tan = Opposite/Adjacent

__

The side DE is opposite the angle 19°, so the sine or tangent relation will be involved. The sine relation requires you know hypotenuse EF. The tangent relation requires you know adjacent side DF.

The only common side between triangles CDF and DEF is side DF. That side is opposite the given 61° angle. The given side length (CF = 24) is adjacent to the 61° angle.

This means you have enough information to use these relations:

  tan(61°) = DF/CF = DF/24

  DF = 24·tan(61°)

and

  tan(19°) = DE/DF

  DE = DF·tan(19°) = (24·tan(61°))·tan(19°) . . . . . use DF from above

  DE ≈ 24(1.804048)(0.344328) ≈ 14.908

The length of DE is about 14.91.

8 0
2 years ago
I need help
pashok25 [27]

Step-by-step explanation:

[ Refer to the attachment ]

  • Q 1 was not clear but yet !!

8 0
3 years ago
Need help please on these two
aksik [14]

Answer:

1.) 20

2.) the second option

Step-by-step explanation:

Hope this helps

3 0
3 years ago
Read 2 more answers
X + 3y = 6<br> 3x + 9y=-4 <br><br> Substitution ^
kozerog [31]

Answer:

1. x + 3y = 6  answer is    x = 6 − 3 y

2. 3x + 9y=-4  answer is  x = − 4 3 − 3 y

but if u are talking about both of them together it has no solution

Step-by-step explanation:

4 0
3 years ago
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