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makkiz [27]
3 years ago
15

Please help with this

Mathematics
2 answers:
hammer [34]3 years ago
7 0

Answer:

8.5

Step-by-step explanation:

17/2= 8.5

Sveta_85 [38]3 years ago
5 0

Answer:

8.5

Step-by-step explanation:

AB=17 and P is in the middle of those 2 points, so we take 17 and divide it by 2 and get 8.5

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Look at the pentagonal numbers. Use finite differences to determine which function represents the pattern.
Ahat [919]

Answer:

f(x) = 1.5x - 0.5x

Step-by-step explanation:

The function of the pattern represented by the pentagonal numbers is the sum of three triangular numbers.

The triangular number general formula

                      x (x + 1) / 2

For  example,

The sequence

1,     3,     6,      10

                                             *

                          *              *  *

         *           *   *          *   *  *

* ,    *  *,     *   *   *,     *   *   *  *

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The pentagonal numbers

The sequence:

1, 5, 12, 22, 35

As shown in the picture can be divided into three triangles

Triangle 2

x (x + 1) / 2

Triangle 1 and 3  (they are triangles one unit smaller than 2)

n (n + 1) / 2

n= x-1

Replacing n

(x-1) ((x-1) + 1) / 2

(x-1) (x) / 2

(x-1) x / 2

______________

Function represents the pattern

Triangle 2  + (Triangle 1  +  Triangle 3)

Triangle 1  = Triangle 3

So then,

Triangle 2 + 2* Triangle 1

x (x +1) /2  + 2* (x -1) x/2

Rearranging

0.5 x (x +1) + x(x -1)

0.5x^2 + 0.5x + x^2 -x

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______

3 0
3 years ago
Read 2 more answers
6m/n-3 m=5 and n=8 helpp if u get it right i will put u on brainlist
Tcecarenko [31]

Answer:

The answer is 6

6(5)/8-3=

30/5=

=6

Step-by-step explanation:

4 0
3 years ago
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oee [108]
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  f(b) - f(a)
--------------
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You'll need to apply this to all four of the given functions.

First function:  f(x) = x^2 + 3x
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Then the ave. r. of c. for this function on this interval is:

    18  - (-2)            20
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Do the same thing for the other 3 functions.

Then arrange your four results in descending order (greatest to least).

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3 years ago
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larisa [96]

Answer:

Step-by-step explanation:

a b c

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solution is b,e

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