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
brilliants [131]
3 years ago
8

Which of the following is the third term of the expansion (a + b)^n ?

Mathematics
1 answer:
Luba_88 [7]3 years ago
5 0

Answer:

  C(n, 2)a^(n-2)b^2

Step-by-step explanation:

Generally, the expansion is written in decreasing powers of "a", so the first few terms would have variable constellations that look like ...

  a^n, a^(n-1)b, a^(n-2)b^2, ...

The coefficients would be (in order), C(n, k) for k increasing from 0, so the coefficient of the 3rd term would be C(n, 2).

You might be interested in
There are 11 people in a room. Are there any outliers in the room? If
Katarina [22]

Answer:

D

Step-by-step explanation:

1, 17, and 20 are very different from the average numbers in this list.

6 0
3 years ago
Read 2 more answers
Earn $134 in 8 hours how much would i get. per hour?
madreJ [45]
$16.75
because $134 divided by 8 hours = $16.75 per hour
3 0
3 years ago
Read 2 more answers
A suit that sells for $300 in on sale of $240. Find the discount rate.
Gemiola [76]

Answer:

20% discount

Step-by-step explanation:

300 - 240 = 60

60 / 300 = 0.20

0.20 × 100 = 20

3 0
2 years ago
Dennis wants to buy a card for his wife. Dennis calculates the amount of the card as $4.50. The actual price of a card is $4. Wh
Alex17521 [72]

Answer:

12.5%

Step-by-step explanation:

$4.50-$4/$4 x 100%

0.5/4x100%

50/4= 25/2 = 12.5%

8 0
3 years ago
what do the following two equations represent? please help 4x+2y= 10 4x-2y= -10 a) the same line b) distance parallel lines c) p
Lady bird [3.3K]

Answer:

D

Step-by-step explanation:

The equations are

● 4x + 2y = 10 (1)

● 4x - 2y = -10 (2)

● 4x + 2y = 10

Add - 4x to both sides

● 4x + 2y -4x = 10 -4x

● 2y = 10 -4x

Divide both sides by 2

● 2y/2 = (10 - 4x)/2

● y = 5 - 2x

● y = -2x + 5 (1)

● 4x - 2y = -10

Add -4x to both sides

● 4x -2y -4x = -10 - 4x

● -2y = -10 - 4x

Divide both sides by -2

● -2y/-2 = (-10 -4x)/-2

● y = 10 + 2x

● y = 2x + 5 (2)

So the equation are

● y = 2x + 5

● y = -2x + 5

Graph them

The lines intersect at (0,5) but aren't perpendicular

So the answer is d

8 0
3 years ago
Other questions:
  • What is the measure of Arc A U?
    15·1 answer
  • I need help with 3,4,5 please someone
    15·1 answer
  • Question 16 please...
    10·1 answer
  • Elmwood Elementary School has 576 students and 24 teachers Savory Elementary School has 638 students and 29 teachers what school
    11·2 answers
  • — бх - Ту = 4<br> Can y’all help me find this question
    11·1 answer
  • 9.10' is how many times as large as 3. 10%
    10·1 answer
  • a cog company produces 20 cogs a day, 4 of which are defective. Find the probability of selecting 4 cogs from the 20 produced wh
    6·1 answer
  • At noon a train leaves Washington, D.C., headed for Miami, Florida, a distance of 1100 miles. The train travels at a speed of 60
    11·1 answer
  • pls help there are 5 questions if you cycle thru the pictures I know not to many points but I will mark big brain boi
    6·1 answer
  • If h = 7 units and r = 2 units, then what is the approximate volume of the cone shown above?
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!