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3 years ago

10

When making a book cover, Anwar adds an additional 20 square inches of paper will Anwar used to make a cover for a book 11 inche

s, 8 inches wide 1 inch height?

1 answer:

Rudik [331]3 years ago

4 0

1.20+8
2.160+1
3.27
4.27+11
5.38
hope i helped

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Solve the differential equation.<br><br> (y^2 + xy^2)y' = 1

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$(y^2 + xy^2)y' = 1 \ \Rightarrow\ (y^2 + xy^2)\frac{dy}{dx}= 1 \ \Rightarrow\\ \\
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A playground is being designed where children can interact with their friends in certain combinations. If there is 1 child, ther

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<h2>Answer:</h2>

<em><u>Recursive equation for the pattern followed is given by,</u></em>

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<h2>Step-by-step explanation:</h2>

In the question,

The number of interaction for 1 child = 0

Number of interactions for 2 children = 1

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So,

We need to find out the pattern for the recursive equation for the given conditions.

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We see that,

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$a_{n}=a_{n-1}+(n-1)^{2}$

On checking the equation at the given values of 'n' of, 1, 2, 3 and 4.

<u>At, </u>

<u>n = 1</u>

$a_{n}=a_{n-1}+(n-1)^{2}\\a_{1}=a_{1-1}+(1-1)^{2}\\a_{1}=0+0=0\\a_{1}=0$

which is true.

<u>At, </u>

<u>n = 2</u>

$a_{n}=a_{n-1}+(n-1)^{2}\\a_{2}=a_{2-1}+(2-1)^{2}\\a_{2}=a_{1}+1\\a_{2}=1$

Which is also true.

<u>At, </u>

<u>n = 3</u>

$a_{n}=a_{n-1}+(n-1)^{2}\\a_{3}=a_{3-1}+(3-1)^{2}\\a_{3}=a_{2}+4\\a_{3}=5$

Which is true.

<u>At, </u>

<u>n = 4</u>

$a_{n}=a_{n-1}+(n-1)^{2}\\a_{4}=a_{4-1}+(4-1)^{2}\\a_{4}=a_{3}+9\\a_{4}=14$

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