Answer:
7=x
Step-by-step explanation:
2x+34=4(x+5)
2x+34=4x+20
-2x -2x
34=2x+20
-20 -20
14=2x
/2 /2
Answer:
5. 
6. 
7. 
8. 
9. 
10.
Step-by-step explanation:
5. Slope =
=
= 

6. Slope => 


7. Slope => 

8. Slope => 

9. Slope => 

10. Slope => 

Let

, so that


Substituting into the ODE gives


The first series starts with a linear term, while the other two start with a constant. Extract the first term from each of the latter two series:


Finally, to get the series to start at the same index, shift the index of the first two series by replacing

with

. Then the ODE becomes

which can be consolidated to get
![\displaystyle\sum_{k\ge1}\bigg[(3k(k+1)+6(k+1))a_{k+1}+a_k\bigg]x^k+6a_1+a_0=0](https://tex.z-dn.net/?f=%5Cdisplaystyle%5Csum_%7Bk%5Cge1%7D%5Cbigg%5B%283k%28k%2B1%29%2B6%28k%2B1%29%29a_%7Bk%2B1%7D%2Ba_k%5Cbigg%5Dx%5Ek%2B6a_1%2Ba_0%3D0)
![\displaystyle\sum_{k\ge1}\bigg[3(k+1)(k+2)a_{k+1}+a_k\bigg]x^k+6a_1+a_0=0](https://tex.z-dn.net/?f=%5Cdisplaystyle%5Csum_%7Bk%5Cge1%7D%5Cbigg%5B3%28k%2B1%29%28k%2B2%29a_%7Bk%2B1%7D%2Ba_k%5Cbigg%5Dx%5Ek%2B6a_1%2Ba_0%3D0)
You're fixing the solution so that it contains the origin, which means

which in turn means

. With the given recurrence, it follows that

for all

, so the solution would be

. This is to be expected, since

is clearly a singular point for the ODE.
Answer:
<u>x = 3</u>
Step-by-step explanation:
We should know that:
A straight segment joining the middle of two sides in a triangle is parallel to the third side and equal to half of it.
So,
3x + 1 = (1/2) * 20 = 10
3x = 10 - 1 = 9
x = 9/3 = 3
<u>So, the value of x = 3</u>