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liberstina [14]
3 years ago
8

HELP PLEASEEEE I don’t get it

Mathematics
2 answers:
jek_recluse [69]3 years ago
7 0

10 is answer choice B

11 is answer choice A

vredina [299]3 years ago
6 0

The answer is A!!

Hope this helps!!

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What is the coefficient of the third term in the binomial expansion of (a + b)6? 1 15 20 90
Sholpan [36]

Answer:  15

Step-by-step explanation:

(r+1)th term of (a+b)^n is given by:-

T_{r+1}=\ ^nC_r(a)^{n-r}b^r

For (a+b)^6 , n= 6

T_3=T_{2+1}=\ ^6C_2(a)^{6-2}(b)^2\\\\

=\ \dfrac{6!}{4!2!}a^4b^2\ \ \ [^nC_r=\dfrac{n!}{r!(n-r)!}]\\\\=\dfrac{6\times5\times4!}{4!\times2}a^4b^2\\\\=3\times5a^4b^2\\\\ =15a^4b^2

Hence, the coefficient of the third term in the binomial expansion of  (a+b)^6 is 15.

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3 years ago
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Answer:

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bogdanovich [222]

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4.178×10 to the second power

Step-by-step explanation:

Move the decimal twice to the Left

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So, the correct sign for this is >.
Have a great day! ♪
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In the following image, AB is parallel to DC, and BC is a transversal intersecting both parallel lines.
professor190 [17]
Yea sir thanks buddy thanks again
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