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
S_A_V [24]
3 years ago
15

What is the coefficient of x^2 y^3 in the expansion of (2x+y)^5

Mathematics
1 answer:
Anna35 [415]3 years ago
4 0

If it's x²y³ then we know it's the second term of the expansion, that known we can use the combination

C(5, 2) = 5!/(2!.3!) = 10

Then if we had something like

(a + b)^5 our second term would be 10a²b³ but as we can see it's "a²"

And in our case we have 2x as a

So we must do 2² too

2² = 4

10 . 4 = 40

Then our second term of the expansion would be

40x²y³

You might be interested in
Dwight and Walt are building model cars. Dwight builds 7 fewer models than 4 times the number Walt builds.Dwight builds at most
romanna [79]

 4x-7\leq 9  inequality could be used to find the number of models Walt builds. Correct option B).

<u>Step-by-step explanation:</u>

Here we have , Dwight and Walt are building model cars. Dwight builds 7 fewer models than 4 times the number Walt builds.Dwight builds at most 9 models. We need to find Which inequality could be used to find the number of models Walt builds . Let's find out:

Let the  the number Walt builds is x , So Dwight builds 7 fewer models than 4 times the number Walt builds i.e.

⇒ 4x-7

But , according to question Dwight builds at most 9 models i.e.

⇒ 4x-7\leq 9

⇒ 4x\leq 16

⇒ \frac{4x}{4}\leq \frac{16}{4}

⇒ x\leq 4

Therefore ,  4x-7\leq 9  inequality could be used to find the number of models Walt builds which is Dwight builds at most 9 and Walt builds at most 4 .

4 0
3 years ago
Can you help me with this question please
NeTakaya

Answer:

A  B  C  D

6.5

:/  

3.25

=  

1

:  

0.5

 

8 0
3 years ago
7y+65.7=2 true or false(don't answer that I just don't want this taken down(unless you do actually have the answer) is anyone in
Sophie [7]

It's false and same lol

8 0
2 years ago
I need help finding the area of this compound shape. Need help asap.
MariettaO [177]
If you multiply the dark inside one and the outside one then add them up it will give you the answer!<span />
8 0
3 years ago
Four students have applied to a special program and only one can be accepted. They have taken a battery of 12 tests and all have
irga5000 [103]

Answer:B

Step-by-step explanation:

Given

Every student secure same average score

Standard deviation is denoted by \sigma

\sigma _A=3.12

\sigma _B=0.27

\sigma _C=13.45

\sigma _D=6.45

Consistency is criteria of acceptance then Student should be selected the standard deviation is least for student B.

Standard deviation tells how a data varies from mean Position .

More Deviation from mean indicates less consistency .

6 0
3 years ago
Other questions:
  • Shanika read some pages on Monday. On Tuesday, she read 6 pages. She read 13 pages
    6·1 answer
  • Help ASAP!!
    11·2 answers
  • PLZ HELP!!!!!!! Can a kite be formed by drawing a triangle and then reflecting one or more times? Explain.
    14·1 answer
  • Insert parentheses to make these equalities correct<br> 1+2·3+4·5=65
    8·1 answer
  • At his current level of consumption, Cameron gets 3 times more marginal utility from an additional game of pinball than from an
    14·1 answer
  • Mr. Jackson's PE class is practicing for a 3-mile relay race. Each member of the team has to run 1/6 of a mile. How many student
    15·1 answer
  • Who could help me please and thank you
    10·1 answer
  • HELP ME ASAP PLEASEEEE
    6·1 answer
  • Line A passes through the points (0, -5) and 12,1. Line B passes through the points (0, -4) and (10, 1). write an equation for e
    12·1 answer
  • PLZ HELP CORRECT ANSWER WILL GET BRAINLIEST
    10·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!