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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

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A company that makes hair care products at 9000 people try a new shampoo. Of the 9000 people, 18 had a mid allergic reaction. Wh
lara [203]

Answer:

0.2% of the people had mid allergic reaction.

Step-by-step explanation:

Given that:

Number of people tested for a new shampoo = 9000

Number of people who had allergic reaction = 18

Percent of people = \frac{People\ who\ have\ reaction}{Total\ number}*100

Percent of people = \frac{18}{9000}*100

Percent of people = 0.002 * 100

Percent of people = 0.2%

Hence,

0.2% of the people had mid allergic reaction.

3 0
3 years ago
Please answer all 3 questions
blsea [12.9K]

Answer:

  • x = 30°
  • DB = 26
  • AD = BC = AB = DC = 7

Step-by-step explanation:

  • <em>Diagonals of a square are congruent and perpendicular and bisect each other</em>
<h3>Q4</h3>

m∠AEB = 3x

m∠AEB = 90°

  • 3x = 90° ⇒ x = 30°
<h3>Q5</h3>

AE = 3x - 2

EC = 2x + 3

  • AE = EC
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  • 3x - 2x = 3 + 2
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DB = EC = 2(AE) = 2(3*5 - 2) = 2(13) = 26

<h3>Q6</h3>

<u>AD and BC are the sides, which are equal</u>

  • 2x - 1 = 5x - 13
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AD = BC = AB = DC =  2*4 - 1 = 7

7 0
3 years ago
Read 2 more answers
Which relation defined by a set of ordered pairs is not a function?
IRINA_888 [86]
The answer is:  [C]:  
<span>___________________________________________________________
"{(1, –1), (2, –2), (0, 0), (1, 1), (2, 2)}</span> " <span>{(1, –1), (2, –2), (0, 0), (1, 1), (2, 2)}" .
__________________________________________________________
This set of ordered pairs is NOT a function because their is one x-coordinate in this set that has multiple y-coordinates;  
                               specifically:  "(1, -1)" ; and "(1, 1)".
__________________________________________________________
       All of the other answer choices given are functions.
__________________________________________________________</span>
3 0
4 years ago
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r-ruslan [8.4K]

Answer:

 your answer would be 4.5

Step-by-step explanation:

because if you take the 3/4 from 3 and turn it into a decimal it would be 0.75 so 0.75 + 0.75 is 1.5 and 3 + 1.5 = 4.5

i hope i helped you

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Solve. Explain your answers in the box below.
bazaltina [42]

Answer:

Travis estimated the product of 602 and 341 to be 1,800. His work is shown below. Find and explain Travis's error. 600×300 6 hundreds × 3 hundreds =18 hundreds 600×300=1,800 b. Margaret said the exact product of 602

Step-by-step explanation:

i hoped it was right!

5 0
3 years ago
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