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Lady bird [3.3K]
3 years ago
13

Expand the following

Mathematics
2 answers:
harina [27]3 years ago
8 0

Answer:

a) 4x+4

b) 7x-14

c) 12x +18

d) 10x-10y

kenny6666 [7]3 years ago
3 0

Answer:

4x+4

7x-14

12x+18

10x-10y

Step-by-step explanation:

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What is the fourth term of the binomial expansion for (3x-2y)6
Thepotemich [5.8K]
One way is to just expand it by using binomial theorem
or to use pascal's triangle

ok so

to find the nth term of a binomial, (a-b). where the binomial is to the r power you do
n-1=k

rCk times (a)^{r-k}(-b)^k
and rCk=\frac{r!}{k!(r-k)!}

so

4th term
4-1=3
6 is exponent

6C3(3x)^{6-3}(-2y)^3=
( \frac{6!}{3!(6-3)!} )((3x)^3(-8y^3)=
( \frac{6*5*4}{1*2*3} )(27x^3)(-8y^3)=
(20)(27)(-8)(x^3)(y^3)=-4320x^3y^3



the 4th term is -4320x^3y^3

7 0
3 years ago
Mai will spend more than $23 on gifts. So far, she has spent $15. What are the possible additional amounts she will spend? Use c
mote1985 [20]

Answer:

c = ≥ (23 - 15) therefore c = ≥ 8

3 0
3 years ago
The current student population of the Brentwood Student Center is 2,000. The enrollment at the center increases at a rate of 4%
swat32

Answer:

2249.728 so the answer would be 2250

Step-by-step explanation  

2000(1.04)^3 you can change the 3 out for any number to find the population for any given year.

5 0
4 years ago
I need help with this asap!!!! ​
Yuri [45]

Answer:

26.6 but that is not one of yor answers...

I think you have a typo in "A"

I think that your have a typo in the answers

x/sin(40) = 32/sin(90)

x = 26.6

Step-by-step explanation:

3 0
3 years ago
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Misha Larkins [42]

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Step-by-step explanation:

3 0
3 years ago
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