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2 years ago

1) What percentage of 18 is 9

Mathematics

2 answers:

sasho [114]2 years ago

5 0

Answer:

Step-by-step explanation:

AVprozaik [17]2 years ago

3 0

-50% would be 18 of 9

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Can someone help me with this equation?<img src="https://tex.z-dn.net/?f=%5Cfrac%7B2x%2B3%7D%7B15%7D%20%3D%5Cfrac%7B9%7D%7B10%7D

Murljashka [212]

Remember that when you bring ÷ to the other side of the equal sign it'll become multiply instead

3 0

3 years ago

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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

mariarad [96]

<h2>Answer:</h2>

Recursive equation for the pattern followed is given by,

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

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

In the question,

The number of interaction for 1 child = 0

Number of interactions for 2 children = 1

Number of interactions for 3 children = 5

Number of interaction for 4 children = 14

So,

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

So,

We see that,

$a_{1}=0\\a_{2}=1\\a_{3}=5\\a_{4}=14\\$

Therefore, on checking, we observe that,

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

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

At,

n = 1

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

which is true.

At,

n = 2

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

Which is also true.

At,

n = 3

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

Which is true.

At,

n = 4

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

This is also true at the given value of 'n'.

Therefore, the recursive equation for the pattern followed is given by,

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

3 0

2 years ago

Convert 76,000 ml into L. Please show your work.

ser-zykov [4K]

Ok so there are 1,000 ml in every liter so
76000 ml= L which is a thousand ml
76000/1000
=76 L

5 0

2 years ago

1,236,840 in scientific notation.

Leni [432]

The answer is 123684 x 10^1. Hope i helped.(whatever comes after ^ is an exponent)

4 0

2 years ago

Simplyfy 8x^4y^5 times 10xy^3

Dennis_Churaev [7]

Answer:

$80x^5y^8$

Step-by-step explanation:

$8x^4y^5\times 10xy^3=\\\\(8\times 10) \times (x^4\times x)\times (y^5\times y^3)=\\\\80x^5y^8$

Hope this helps!

4 0

3 years ago

Read 2 more answers