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Serhud [2]
3 years ago
7

Find the number if...

Mathematics
2 answers:
maw [93]3 years ago
7 0

20% of 106

= 0.20 * 106

= 21.2

21.2  = 10.6%  of   21.2 / 0.106

=  200 answer

2.   56 * 0.055 / 0.35

= 8.8

3.  6.4 / 0.8 = 8

raketka [301]3 years ago
4 0
Here it is worked out

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This game is not fair. No one will know wha their going to get. It is a game of probability
4 0
3 years ago
Read 2 more answers
A box has five items, three good and two defective. three items are selected at random without replacement. let x be the number
user100 [1]
This problem can be solved from first principles, case by case.  However, it can be solved systematically using the hypergeometric distribution, based on the characteristics of the problem:
- known number of defective and non-defective items.
- no replacement
- known number of items selected.

Let
a=number of defective items selected
A=total number of defective items
b=number of non-defective items selected
B=total number of non-defective items
Then 
P(a,b)=C(A,a)C(B,b)/C(A+B,a+b)
where 
C(n,r)=combination of r items selected from n,
A+B=total number of items
a+b=number of items selected

Given:
A=2
B=3
a+b=3
PMF:
P(0,3)=C(2,0)C(3,3)/C(5,3)=1*1/10=1/10
P(1,2)=C(2,1)C(3,2)/C(5,3)=2*3/10=6/10
P(2,0)=C(2,2)C(3,1)/C(5,3)=1*3/10=3/10
Check: (1+6+3)/10=1 ok
note: there are only two defectives, so the possible values of x are {0,1,2}

Therefore the 
PMF:
{(0, 0.1),(1, 0.6),(2, 0.3)}

7 0
3 years ago
What is a triangular number?
Snowcat [4.5K]
It's a number that counts the objects that can form an equilateral triangle.
4 0
3 years ago
Please help me with this???
devlian [24]

Answer:

Step-by-step explanation:

4 0
2 years ago
Help me will mark as brainliest can someone give me the answer of both or atleast one​
slamgirl [31]

Answer:

8. the length is 88/5cm or 17.6cm

Step-by-step explanation:

8.perimeter =2L + 2W

when you convert the width 42/5 = 8.4

so 52 = 2L + 2*8.4

52= 2L + 16.8

52 - 16.8 = 2L

35.2 = 2L

divide both sides by 2

L = 17.6cm

4 0
2 years ago
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