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lisabon 2012 [21]

2 years ago

8

the lenght of a rectangular storage room is 2 feet longer than its width. What are the dimensions of the room if the perimeter o

f the room is 35 feet?

1 answer:

Ne4ueva [31]2 years ago

6 0

16.5 x 18.5 is the answer to your question

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S= 4LW + 2WH; S=152, L=8, W=4. Find H

Katyanochek1 [597]

H is equal to 3. need the solution?

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3 years ago

I need help on this question

Ainat [17]

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2 years ago

A year ago, my dog weighed 3kgs. I weighed him today and he weighs 4/10 more. How much does he weigh now?

Mariana [72]

Answer: He now weighs 4.2 kg because 4/10 of 3 is 1.2 and 1.2+3=4.2

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3 years ago

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

nata0808 [166]

Answer:

6

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