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3 years ago

15

Lily likes to collect records. Last year she had 10 records in her collection. Now she has 13 records. What is the percent incre

ase of her collection?

1 answer:

mojhsa [17]3 years ago

5 0

Answer:

3%

Step-by-step explanation:

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Which expression is equivalent to 4(6 + 8)?

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3 years ago

Multiple polynomial the (x^3+3x^2+1)(3x^2+6x-2)

Mrrafil [7]

The product of given polynomials is: $3x^5+15x^4-16x^3-3x^2+6x-2$

Step-by-step explanation:

Given polynomials are:

$(x^3+3x^2+1)\\and\\(3x^2+6x-2)$

In order to multiply both polynomials, we will use the distributive property

So,

$= (x^3+3x^2+1)(3x^2+6x-2)\\=x^3(3x^2+6x-2)+3x^2(3x^2+6x-2)+1(3x^2+6x-2)\\=3x^5+6x^4-2x^3+9x^4+18x^3-6x^2+3x^2+6x-2$

Combining like terms

$=3x^5+6x^4+9x^4-2x^3+18x^3+3x^2-6x^2+6x-2\\=3x^5+15x^4-16x^3-3x^2+6x-2$

Hence,

The product of given polynomials is: $3x^5+15x^4-16x^3-3x^2+6x-2$

Keywords: Polynomials, variables

Learn more about polynomials at:

#LearnwithBrainly

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3 years ago

Can you plz help me with number 2

Kruka [31]

Answer:

the height is 20

Step-by-step explanation:

you should set a equation first:

12/15=x/25

and then cross multiply

to get x=20

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