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Nitella [24]
3 years ago
9

What is the bionominal expansion of (x+2y)^7

Mathematics
1 answer:
tatiyna3 years ago
8 0

Answer:

Choose the 8th row of Pascal's triangle to get the sequence:

1

,

7

,

21

,

35

,

35

,

21

,

7

,

1

Write the powers of

2

in ascending order up to

2

7

as a sequence:

1

,

2

,

4

,

8

,

16

,

32

,

64

,

128

Multiply the two sequences together to get:

1

,

14

,

84

,

280

,

560

,

672

,

448

,

128

Then:

(

x

+

2

y

)

7

=

x

7

+

14

x

6

y

+

84

x

5

y

2

+

280

x

4

y

3

+

560

x

3

y

4

+

672

x

2

y

5

+

448

x

y

6

+

128

y

7

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    Whole numbers are: the numbers: 0, 1, 2, 3, ...
    Integers are like the whole numbers, but they also include negative numbers ( as  - 3 ).
    So - 3 is an integer and not a whole number.
    Answer:
    C ) the set of whole numbers.
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Step-by-step explanation:

1)......mean= sum of observations/ total observations

= 5.2+8.4+4.3+6.7+5.8/5= 6.08

median= n=5(odd)=n+1/2=6/2=3rdterm= 5.8( when arranged in ascending order).....

mode= 3median- 2meam= 3×5.8-2×6.08= 5.24

range=8.4-4.3=4.1(when done A.O)

2)......mean= -2-13-13-5-7/5= -8

median= 3rd term= -5.....(n=5..odd)(when done A.o)

mode=largest frequency= -13

range= -13-(-2) = -13+2= -11(A.O)

3).....mean= sum/no.= 8+6+13/2+17/2+15/2+7+8+11/2+7+8//10=7.2

median=n=10(even)

=

mode= 8

range=8.5-5.5=3

median:==

(10/2)+(10/2+1)//2=5 term + 6term/2=7+7.5=14.5/2=7.25

4)....

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3 0
3 years ago
Floyd is an aspiring music artist. He has a record contract that pays him a base rate of $200 a month and an additional $12 for
Roman55 [17]

Answer:

200 + 12n = 644  Answer: 37

Step-by-step explanation:

200 + 12n = 644

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Which expression is equivalent to 2(2x + 1) + 3x + 3?
postnew [5]

Answer:

D) 7x+5

Step-by-step explanation:

  • 2(2x+1)+3x+3
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3 years ago
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Give the domain of each of the following functions in interval notation.
balandron [24]

Answer:

the domain of f(x) is R  ⇒ ] -∞ , ∞[

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