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
Svetllana [295]
3 years ago
5

What is 3a+2b-5a+b simplified?

Mathematics
2 answers:
marishachu [46]3 years ago
7 0

Answer:

-a + b

Step-by-step explanation:

REY [17]3 years ago
3 0

Answer:

-2a + 3b

Step-by-step explanation:

Since you need to simplify the expression, you need to combine like terms. 3a and -5a are like terms because they both have the variable a. 3a + -5a equals -2a. 2b + b equals 3b. Since b would equal 1. If you combine them together, you get -2a + 3b.

Hope this helps!!

You might be interested in
F the domain is {0, 2, -6}, what is the range of y = -2x + 3?
makkiz [27]

Answer:

3,-1,15

Step-by-step explanation:

(0,3)  (2,-1)  (-6,15)

8 0
3 years ago
Solve using Fourier series.
Olin [163]
With 2L=\pi, the Fourier series expansion of f(x) is

\displaystyle f(x)\sim\frac{a_0}2+\sum_{n\ge1}a_n\cos\dfrac{n\pi x}L+\sum_{n\ge1}b_n\sin\dfrac{n\pi x}L
\displaystyle f(x)\sim\frac{a_0}2+\sum_{n\ge1}a_n\cos2nx+\sum_{n\ge1}b_n\sin2nx

where the coefficients are obtained by computing

\displaystyle a_0=\frac1L\int_0^{2L}f(x)\,\mathrm dx
\displaystyle a_0=\frac2\pi\int_0^\pi f(x)\,\mathrm dx

\displaystyle a_n=\frac1L\int_0^{2L}f(x)\cos\dfrac{n\pi x}L\,\mathrm dx
\displaystyle a_n=\frac2\pi\int_0^\pi f(x)\cos2nx\,\mathrm dx

\displaystyle b_n=\frac1L\int_0^{2L}f(x)\sin\dfrac{n\pi x}L\,\mathrm dx
\displaystyle b_n=\frac2\pi\int_0^\pi f(x)\sin2nx\,\mathrm dx

You should end up with

a_0=0
a_n=0
(both due to the fact that f(x) is odd)
b_n=\dfrac1{3n}\left(2-\cos\dfrac{2n\pi}3-\cos\dfrac{4n\pi}3\right)

Now the problem is that this expansion does not match the given one. As a matter of fact, since f(x) is odd, there is no cosine series. So I'm starting to think this question is missing some initial details.

One possibility is that you're actually supposed to use the even extension of f(x), which is to say we're actually considering the function

\varphi(x)=\begin{cases}\frac\pi3&\text{for }|x|\le\frac\pi3\\0&\text{for }\frac\pi3

and enforcing a period of 2L=2\pi. Now, you should find that

\varphi(x)\sim\dfrac2{\sqrt3}\left(\cos x-\dfrac{\cos5x}5+\dfrac{\cos7x}7-\dfrac{\cos11x}{11}+\cdots\right)

The value of the sum can then be verified by choosing x=0, which gives

\varphi(0)=\dfrac\pi3=\dfrac2{\sqrt3}\left(1-\dfrac15+\dfrac17-\dfrac1{11}+\cdots\right)
\implies\dfrac\pi{2\sqrt3}=1-\dfrac15+\dfrac17-\dfrac1{11}+\cdots

as required.
5 0
3 years ago
What is f(3)?<br> o 9<br> 0 -1<br> O 1<br> O 9
arlik [135]

Answer:

C.

Step-by-step explanation:

f(3) is referring to 3 on the left side and it is beside 1 which is on the left so it's 1.

4 0
3 years ago
Forty-two is what percent of 70? <br><br> A.21%<br><br> B.60%<br><br> C.74%<br><br> D.167%
Ad libitum [116K]
60% is the answer you are seeking. 
5 0
3 years ago
is M a midpoint of line AB? AB=44, MB=22 a)maybe b)can't determine c)yes d)no (please explain how you got your answer)
Elza [17]

Answer:

Yes

Step-by-step explanation:

Yes, M is the midpoint of AB.

The length of the whole line AB is 44. So, if any midpoint is drawn on it, The two parts of the line will be equal and half of the total lines measure.

Whole line's measure = AB = 44

If any Midpoint say "M" is drawn on it, the measures of divided line would be halved.

AM = BM = 44/2 = 22

5 0
3 years ago
Other questions:
  • In how many ways can the letters of the word CARPET be arranged
    5·2 answers
  • Using your answers from parts b and c, what are the ages of the brother and sister, respectively?
    12·1 answer
  • -7m - 4m + 2 + 5 = 7 - 3m - 8m
    15·1 answer
  • 40 is 8% of what number? I need to know HOW the problem is solved
    8·1 answer
  • PLZ HELP ASAP!!!
    13·1 answer
  • What’s 5/10 + 1/3 I really need help
    5·1 answer
  • Find the sum of the first 45 terms of the following series, to the nearest integer. 9 + 13 + 17 ...​
    7·1 answer
  • What is the difference? Complete the equation. -4 - 2 1/2
    9·1 answer
  • If 258 cars pass through an intersection in six hours, how many cars pass through the intersection every two hours?
    6·1 answer
  • What is the sum of six hundred seven and two thousand, three hundred ninety three
    12·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!