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Elina [12.6K]
3 years ago
6

Find the mean of the following numbers 7 21 2 17 3 13 7 4 9 7 9

Mathematics
1 answer:
Hitman42 [59]3 years ago
6 0

Answer:

9

Step-by-step explanation:

sum of the terms

mean=------------------------------

number of the terms

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Topic: Recognizing Linear and Exponential and Quadratic Functions.
BigorU [14]

Answer:

  Recursive: f(1) = 1; f(n) = f(n-1)/3

  Equation: f(x) = 5/3·(1/3)^(x-1)

Step-by-step explanation:

You know this is an exponential function because sequential lines in the table have a common ratio of f(x) values:

  f(2)/f(1) = (5/9)/(5/3) = 3/9 = 1/3

  f(3)/f(2) = (5/27)/(5/9) = 9/27 = 1/3

and it continues like that.

Besides telling you the function is exponential, it also tells you that each term is 1/3 of the previous term.

<h3>Recursive formula</h3>

The value of f(1) is read from the table. For x = 1, that value is ...

  f(1) = 5/3

As we noticed above, each term is 1/3 the previous term, so the recursive relation is ...

  f(n) = (1/3)·f(n-1)

<h3>Equation</h3>

The general form of the equation for a geometric (exponential) relation is ...

  f(x) = f(1)·r^(x-1) . . . . . . where f(1) is the first term, and r is the common ratio

For this function, we have f(1) = 5/3 and r = 1/3, so the equation is ...

  f(x) = 5/3·(1/3)^(x-1)

__

<em>Additional comment</em>

When given values of x that count from 1, we often express the equation in terms of (x-1). That equation can be simplified so the exponent is x.

  f(x) = 5·(1/3)^x

5 0
1 year ago
2/3 (12x-9) i need help on this
schepotkina [342]

Answer:

8x−6

Step-by-step explanation:

Hope this helps!

6 0
3 years ago
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How to explain to a homework helper how 5 groups help you see 6,7,8,9,10.?
12345 [234]
You could start out by saying u put 5 groups into each number
7 0
3 years ago
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15X^2+20x factor greatest common monomial
velikii [3]
Both 15 and 20 can be divided evenly by 5, so 5 is the greatest common monomial:  5(3x^2 + 4x)  or  5x(3x + 4) 
4 0
3 years ago
Help please <br> Right angle triangle
baherus [9]

Answer:

h ≈ 11.9

Step-by-step explanation:

Since the triangle is right we can use the cosine ratio to find h

cos24° = \frac{adjacent}{hypotenuse} = \frac{h}{13}

Multiply both sides by 13

13 × cos24° = h

⇒ h = 11.9 cm ( to 1 dec. place )

8 0
3 years ago
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