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2 years ago

Can someone please give me the (Answers) to this? ... please ... I need help….

Mathematics

1 answer:

Veronika [31]2 years ago

3 0

Answer:

I just did for your previous posting.

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What is the coefficient of X^2Y^2 in the expansion of (x+y)^4

nata0808 [166]

Answer:

Step-by-step explanation:

We want to expand this; (x + y)⁴

This can be written as;

(x + y)² × (x + y)²

This gives;

(x² + 2xy + y²) × (x² + 2xy + y²)

This gives;

x²(x² + 2xy + y²) + 2xy(x² + 2xy + y²) + y²(x² + 2xy + y²) = x⁴ + 2x³y + x²y² + 2x³y + 4x²y² + 2xy³ + x²y² + 2xy³ + y⁴

Simplifying gives;

x⁴ + 4x³y + 4xy³ + 6x²y² + y⁴

Thus, the coefficient of x²y² is 6

3 0

2 years ago

Please help me 19 points for whoever answers number 3

Nastasia [14]

15%

amount error is guess subtract actual amount 198-172 = 26
26/172 = 0.15
0.15 x100 = 15%

7 0

2 years ago

Read 2 more answers

The following are the ages (years) of 5 people in a room:

Novosadov [1.4K]

Answer:

Step-by-step explanation:

mean = (13+15+12+16+14+X)/6 = 19

70+X=19×6

X=114-70=44

5 0

2 years ago

Which models show 40%? Check all that apply. A model with 4 shaded sections and 6 unshaded sections. A model with 40 shaded sect

Amanda [17]

Answer:

A model with 4 shaded sections and 6 unshaded sections.

A model with 40 shaded sections and 60 unshaded sections.

Step-by-step explanation:

Required:

Which models shows 40%

(a) 4 shaded and 6 unshaded

First, we calculate the total sections

$Total = 4 + 6$

$Total = 10$

The percentage of the shaded section is:

$Shaded = \frac{4}{10} * 100\%$

$Shaded = 0.4 * 100\%$

$Shaded = 40\%$

(b) 40 shaded and 60 unshaded

First, we calculate the total sections

$Total = 40 + 60$

$Total = 100$

The percentage of the shaded section is:

$Shaded = \frac{40}{100} * 100\%$

$Shaded = 0.4 * 100\%$

$Shaded = 40\%$

(c) 2 shaded and 8 unshaded

First, we calculate the total sections

$Total = 2 + 8$

$Total = 10$

The percentage of the shaded section is:

$Shaded = \frac{2}{10} * 100\%$

$Shaded = 0.2 * 100\%$

$Shaded = 20\%$

<em>Hence, (a) and (b) shows 40%</em>

8 0

2 years ago

Read 2 more answers

PLEASE HELP ASAP !!!!!!!!

Vladimir79 [104]

Answer:

Step-by-step explanation:

Uhhh this needs to be 20 characters

3 0

3 years ago

Read 2 more answers

￼Can someone please give me the (Answers) to this? ... please ... I need help….

Can someone please give me the (Answers) to this? ... please ... I need help….