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KatRina [158]
3 years ago
12

Factorise (x+6)²-36x². ​

Mathematics
1 answer:
Lady bird [3.3K]3 years ago
5 0

Answer:

[(x+6)-6x] [(x+6)+6x]

(x+6-6x)(x+6+6x)

(6-5x)(7x+6)

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In a particular region, for families with a combined income of $75,000 or more, 15% of these families have no children, 35% of t
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Answer:

The probability distribution for x:"number of children per family for this income group" is:

\text{P(x=0)}=0.15\\\\\text{P(x=1)}=0.35\\\\\text{P(x=2)}=0.45\\\\\text{P(x=3)}=0.05\\\\

Step-by-step explanation:

With the information given we have the relative frequencies of each category.

We know:

\text{P(x=0)}=0.15\\\\\text{P(x=1)}=0.35\\\\\text{P(x=2)}=0.45\\\\\text{P(x=3)}=0.05\\\\

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3 years ago
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I hope this helped! :)
5 0
3 years ago
Which expression is equivalent to n+n+n?<br><br> A. 3^n<br><br> B. 3n<br><br> C. n^3<br><br> D. n+3
Irina18 [472]

Answer:

B. 3n

Step-by-step explanation:

n + n + n = 3n

<u>-</u><u>-</u><u>-</u><u>-</u><u>-</u><u>-</u><u>-</u><u>-</u><u>-</u><u>-</u><u>-</u><u>-</u><u>-</u><u>-</u><u>-</u><u>-</u><u>-</u><u>-</u><u>-</u><u>-</u><u>-</u><u>-</u><u>-</u><u>-</u><u>-</u><u>-</u><u>-</u><u>-</u><u>-</u><u>-</u><u>-</u><u>-</u><u>-</u><u>-</u><u>-</u><u>-</u><u>-</u><u>-</u><u>-</u><u>-</u><u>-</u><u>-</u>

<u>3n</u> = n + n + n

#IhopeThisHelp

5 0
2 years ago
What is the standard deviation of the following data set rounded to the nearest tenth 3,17,18,15,12,21,9
Alenkinab [10]
I think that it is c or d but correct me if i am wrong
4 0
4 years ago
Read 2 more answers
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