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
Bess [88]
3 years ago
14

Find the coefficient of the x7y2term in the binomial expansion of (x+y)^9

Mathematics
1 answer:
statuscvo [17]3 years ago
8 0

Answer:

36

Step-by-step explanation:

first, see the formula in the attached picture.

now, by applying that formula we get :

the coefficient of the x7y2 is :

9C7 = 36  (you can either use a calculator or just the algebraic formula)

You might be interested in
What is the common denominator of 1/a + 1/b in the complex fraction 1/a - 1/b over 1/a+1/b?
9966 [12]

Answer:

For this case we have the following fraction:

To find the common denominator, what we must do is rewrite the fraction.

For this, we subtract fractions in the numerator and the sum of fractions in the denominator.

We have then:

We observe that the common denominator is given by the product:

Answer:

the common denominator is:

D)ab

Step-by-step explanation:

4 0
2 years ago
Find the average rate of change of f(x)=2x-1 from x=-1 to x=2
MrMuchimi

The average rate of change from x = -1 to x = 2 is 2

<u>Solution:</u>

Given function is:

f(x) = 2x - 1

We have to find the average rate of change from x = -1 to x = 2

<em><u>The average rate of change is given as:</u></em>

\text {Average rate of change}=\frac{f(b)-f(a)}{b-a}

<em><u>The average rate of change from x = -1 to x = 2 is given by formula:</u></em>

\text {Average rate of change}=\frac{f(2)-f(-1)}{2-(-1)}\\\\\text {Average rate of change}=\frac{f(2)-f(-1)}{3}

<em><u>Find f(2) and f( - 1)</u></em>

<em><u>Substitute x = 2 in given function</u></em>

f(2) = 2(2) - 1 = 4 - 1 = 3

<em><u>Substitute x = -1 in given function</u></em>

f( - 1) = 2(-1) - 1 = -2 - 1 = -3

<em><u>Substitute the values in above formula,</u></em>

\text {Average rate of change}=\frac{3-(-3)}{3}=\frac{6}{3}=2

Thus average rate of change from x = -1 to x = 2 is 2

3 0
3 years ago
test worth 70 points; test score of 90% write a proportion to find how many points a student needs to earn on the test to get th
GaryK [48]
70/70 = 100%
35/70 =50%
63/70=90%
6 0
3 years ago
The size of the largest angle in a triangle is 3 times the size of the smallest angle.
tamaranim1 [39]

The sizes of the angles are 34° , 44° , 102°

Step-by-step explanation:

The given is:

  • The size of the largest angle in a triangle is 3 times the size of the smallest angle
  • The third angle is 10° more than the smallest angle
  • The size of the third angle is x

We need to find the size of each angle in the triangle

∵ The size of the smallest angle = x°

∵ The size of the largest angle is 3 times the size of the smallest angle

∴ The size of the largest angle = x × 3 = (3x)°

∵ The third angle is 10° more than the smallest angle

∴ The size of the third angle = (x + 10)°

Add the size of the three angles and equate the sum by 180°

∵ The sum of the sizes of the interior angles of a Δ is 180°

∴ x + (3x) + (x + 10) = 180

∴ x + 3x + x + 10 = 180

- Add like terms

∴ 5x + 10 = 180

- Subtract 10 from both sides

∴ 5x = 170

- Divide both sides by 5

∴ x = 34

∵ x is the size of the smallest angle

∴ The size of the smallest angle is 34°

∵ 3x is the size of the largest angle

∴ The size of the largest angle = 3(34) = 102°

∵ x + 10 is the size of the third angle

∴ The size of the third angle = 34 + 10 = 44°

The sizes of the angles are 34° , 44° , 102°

Learn more:

You can learn more about the triangles in brainly.com/question/1479138

#LearnwithBrainly

6 0
3 years ago
SOMEONE HELP ME PLSSSSSSS
mr Goodwill [35]

Answer:

y = 8x

Step-by-step explanation:

hope this is what u need if not comment and I'll change it

<3

7 0
3 years ago
Other questions:
  • One side of a kite is 5cm less than 2 times the length of another if the perimeter is 14 cm find the length of each side of the
    7·1 answer
  • Solve. -2/5x-9&lt;9/10 Show your work. Will mark brainliest! <br><br> (the slashes mean fractions)
    12·1 answer
  • Write each fraction in its simplest form 18/4 and 24/32
    15·2 answers
  • Solve the system of linear equations below.<br><br> 2x + y = 5<br> x + y = 4
    14·2 answers
  • |udy Carol has medical, prescription drug, and term life insurance coverages through the company for which she works. Medical co
    14·1 answer
  • the cost of tuition at a local college is $10,000 and increases 4% each year.what is the cost of tuition after 5 years?
    12·1 answer
  • I WILL GIVE BRAINLIEST<br> And more points please answer
    6·2 answers
  • Solve for r. r = 7 ( 6 ) − 20 r =
    12·1 answer
  • What are the solutions to the equation |X – 3|= 14?
    11·1 answer
  • For the following exercises, solve each inequality and write the solution in interval notation.
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!