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galina1969 [7]
3 years ago
15

What does this equal: 4 1/2 + 3 2/3=

Mathematics
2 answers:
professor190 [17]3 years ago
8 0
4 1/2 + 3 2/3 = 8.16666667
prohojiy [21]3 years ago
3 0
49/6 or 8 1/6 if you want to keep it a fraction but if not 8.166 (6 repeating)
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Six hundred paving stones were examined for cracks, and 20 were found to be cracked. The same 600 stones were then examined for
spin [16.1K]

Answer:

a) probability that is cracked=1/30 (3.33%)

b) probability that is discoloured = 29/600 (4.83%)

c) probability that is cracked and discoloured =  11/600 (1.83%)

Step-by-step explanation:

assuming that each stone is equally likely to be chosen then defining the events C= the stone is cracked , D= the stone is discoloured , N= the stone is neither cracked or discoloured, then

P(C)= number of favourable outcomes/total number of outcomes = 20 stones/600 stones = 1/30 (3.33%)

P(D)= number of favourable outcomes/total number of outcomes = 29 stones/600 stones = 29/600 (4.83%)

the probability that is discoloured and cracked is P(C∩D) , where

P(C∪D)=P(C) + P(D)-P(C∩D)

and

P(C∪D)= 1- P(N)

thus

1- P(N)=P(C) + P(D)-P(C∩D)

P(C∩D)= P(N)+P(C)+P(D) -1

replacing values

P(C∩D)= P(N)+P(C)+P(D)=562/600 + 20/600 + 29/600 -1= 611/600 -1 = 11/600

thus

P(C∩D)=  11/600 (1.83%)

3 0
2 years ago
In ΔABC, ∠CAD = 22° and segment CB = 15 cm. If the cos of 22° = 0.9272, then the sin of ∠C = _______.
rusak2 [61]
Your answer is B. 0.9272. Hope I was able to help!
3 0
3 years ago
Read 2 more answers
Which one is it? Pls help. I’ll mark brainlist (Pls ignore what I chose)
Marianna [84]

Answer:

A.

Step-by-step explanation:

i think

4 0
2 years ago
If P/6=0 then what does p equal
yulyashka [42]

Answer:

6

Step-by-step explanation:

4 0
2 years ago
May someone help me with this?
elena-14-01-66 [18.8K]

I am putting this into rows. Ex: row one has 0. row two has blank and seven.

1: 0

2: 9 7

3: - 9 6

4: 1 3

5: - 1 2

6: 1

So the answer on top would be 8 1 r 1.

5 0
2 years ago
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