1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
skad [1K]
3 years ago
12

Question is in picture please help!

Mathematics
1 answer:
Anuta_ua [19.1K]3 years ago
6 0

Answer:

I’m not 100% sure but I think 120°.

Step-by-step explanation:

This is because, angles on a straight line add up to 180°. Because there is 60 degrees on one side of line B, this means the other section is 120° (120°+60°=180°) The angle labelled (3x) is alternate to the angle of 120°. Alternate angles are always equal, meaning that 3x is equal to 120°.

I hope this is right.

You might be interested in
13.10. Suppose that a sequence (ao, a1, a2, ) of real numbers satisfies the recurrence relation an -5an-1+6an-20 for all n> 2
Gwar [14]

a. This recurrence is of order 2.

b. We're looking for a function A(x) such that

A(x)=\displaystyle\sum_{n=0}^\infty a_nx^n

Take the recurrence,

\begin{cases}a_0=a_0\\a_1=a_1\\a_n-5a_{n-1}+6a_{n-2}=0&\text{for }n\ge2\end{cases}

Multiply both sides by x^{n-2} and sum over all integers n\ge2:

\displaystyle\sum_{n=2}^\infty a_nx^{n-2}-5\sum_{n=2}^\infty a_{n-1}x^{n-2}+6\sum_{n=2}^\infty a_{n-2}x^{n-2}=0

Pull out powers of x so that each summand takes the form a_kx^k:

\displaystyle\frac1{x^2}\sum_{n=2}^\infty a_nx^n-\frac5x\sum_{n=2}^\infty a_{n-1}x^{n-1}+6\sum_{n=2}^\infty a_{n-2}x^{n-2}=0

Now shift the indices and add/subtract terms as needed to get everything in terms of A(x):

\displaystyle\frac1{x^2}\left(\sum_{n=0}^\infty a_nx^n-a_0-a_1x\right)-\frac5x\left(\sum_{n=0}^\infty a_nx^n-a_0\right)+6\sum_{n=0}^\infty a_nx^n=0

\displaystyle\frac{A(x)-a_0-a_1x}{x^2}-\frac{5(A(x)-a_0)}x+6A(x)=0

Solve for A(x):

A(x)=\dfrac{a_0+(a_1-5a_0)x}{1-5x+6x^2}\implies\boxed{A(x)=\dfrac{a_0+(a_1-5a_0)x}{(1-3x)(1-2x)}}

c. Splitting A(x) into partial fractions gives

A(x)=\dfrac{2a_0-a_1}{1-3x}+\dfrac{3a_0-a_1}{1-2x}

Recall that for |x|, we have

\displaystyle\frac1{1-x}=\sum_{n=0}^\infty x^n

so that for |3x| and |2x|, or simply |x|, we have

A(x)=\displaystyle\sum_{n=0}^\infty\bigg((2a_0-a_1)3^n+(3a_0-a_1)2^n\bigg)x^n

which means the solution to the recurrence is

\boxed{a_n=(2a_0-a_1)3^n+(3a_0-a_1)2^n}

d. I guess you mean a_0=2 and a_1=5, in which case

\boxed{\begin{cases}a_0=2\\a_1=5\\a_2=13\\a_3=35\\a_4=97\\a_5=275\end{cases}}

e. We already know the general solution in terms of a_0 and a_1, so just plug them in:

\boxed{a_n=2^n+3^n}

8 0
3 years ago
Which properties does not belong with the other three?
Oksi-84 [34.3K]

Hi there!  

»»————- ★ ————-««

I believe your answer is:  

x - 6 = 5

»»————- ★ ————-««  

Here’s why:  

⸻⸻⸻⸻

I am assuming that '3=x divided by 3' is supposed to be 3 = \frac{x}{3}.

⸻⸻⸻⸻

The first, second, and fourth equations have x divided by a number. To isolate x, we would have to use the multiplication property of equality.

⸻⸻⸻⸻

For the third one (x-6=5), the variable 'x' is being subtracted by 6. We would have to use the addition property of equality to isolate x.

⸻⸻⸻⸻

»»————- ★ ————-««  

Hope this helps you. I apologize if it’s incorrect.  

8 0
3 years ago
After Stan makes a 15% down payment on a $7,000<br> motorcycle, how much will he still owe?
Svetllana [295]
1,500 I thinkkkkkkkkk
3 0
3 years ago
PLEASE HELP! 25 POINTS <br><br> listen the question number then answer
frutty [35]

Answer: <

Explantion:

8*4-2(4)=24

5(10-4)=30, because you factor the 5 into 10 and 4 so

50-20=30

The second one you want will be integers.

7 0
4 years ago
Read 2 more answers
MATH HOMEWORK HELP!! &gt;&gt; Solving systems by GRAPHING:
grin007 [14]
I dont know the coordinates because i dont feel like putting them in right now buttttt........

main street bus equation is y=2x+40

County bus line equation is y=3x+20

thats all i've got.
7 0
3 years ago
Other questions:
  • 7 over 12 x 6 HELP ME PLEASE
    11·2 answers
  • Jennifer has 84.5 yards of fabric to make curtains. She makes 6 identical curtains and has 19.7 of fabric remaining. How many ya
    5·1 answer
  • I need help finding out what x is only using the sine and cosine rule.
    5·1 answer
  • Explain how multiplying fractions is similar to multiplying whole numbers and how it is different ?
    7·1 answer
  • 2. ***HINT: IQR = Q3 - Q1*
    11·1 answer
  • Which shows the expression below in simplified form?<br>​
    12·1 answer
  • 4. Multiply
    10·1 answer
  • It's 9:10PM, I can't do math anymore :')
    6·2 answers
  • Victor and his sister have both been saving money to help pay for college. Victor deposited
    13·2 answers
  • I NEED HELP ASAP!!! PLEASE HELP ME!!!
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!