3 years ago

Please help me123456

Mathematics

2 answers:

Mrrafil [7]3 years ago

7 0

Answer:

Step-by-step explanation:

Zanzabum3 years ago

4 0

Answer:

the answer of the question is 9.5

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Katen [24]

Answer:

For number 7 it is 6x*4

For number 8 it is 3(6+4)

Have a great day :)

6 0

3 years ago

If f(n)=(n-1)2+<br><img src="https://tex.z-dn.net/?f=f%28n%29%20%3D%20%28n%20-1%292%20%2B%20%20%20%203n" id="TexFormula1" title=

Liono4ka [1.6K]

Distribute the 2 first.

f(n) = 2n - 2 + 3n

Combine like terms.

f(n) = 5n - 2

8 0

3 years ago

Please help!posted picture of question

ale4655 [162]

We have the following arithmetic series:
4, 13, 22, 31, 40
The common difference is given by:
13-4 = 9
22-13 = 9
31-22 = 9
40-31 = 9
Since it is an arithmetic series, the difference is constant.
Answer:
The common difference is:
9
option 4

7 0

3 years ago

Can any one help me and work 2 or 3 of the problems for me to understand it

Alekssandra [29.7K]

To solve these problems you need to use the quadratic formula which is listed below.

$\frac{-b +/- \sqrt{b^{2} - 4ac } }{2a}$

So, if you take #2.

The $x^{2}$ has a 1 in front of it. The x has a -3 in front of it. The last number is also -3. So:

a = 1
b = -3
c = -3

Then you can plug all of these into the equation and simplify. Which gives you:

$\frac{3 -/+ \sqrt{21} }{2}$

4 0

3 years ago

Side XY of triangle XYZ is extended to point W, creating a linear pair with <WYZ and <XYZ. What is the value of x?

bulgar [2K]

Answer:

Step-by-step explanation:

I just did this and its right!

3 0

3 years ago