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Phantasy [73]
2 years ago
8

A triangle with two 8

Mathematics
1 answer:
tekilochka [14]2 years ago
3 0

Answer:

One unique triangle

Step-by-step explanation:

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A radio disc jockey has 8 songs on this upcoming hour's playlist: 2 are rock songs, 4 are reggae songs, and 2 are country songs.
mart [117]

Answer:

\displaystyle  \frac{1}{28}

Step-by-step explanation:

we are given 8 songs

2 are <em>rock.</em><em> </em>4 are <em>reggae</em>, 2 are <em>country</em>

we want to figure out the probability of getting both reggae songs

notice that, they aren't replacing thus it's an independent probability

recall that,

\displaystyle \rm P(A  \:  \text{and} \: B) = P(A) \times P(B \mid A)

P(A) represents the chance of getting our subject first time and P(B|A) represents the chance of getting the same subject second time

let's figure out P(A)

we have 2 reggae songs

and total 8 songs

therefore

\displaystyle\rm P(A) =  \frac{2}{8}  =  \frac{1}{4}

let's figure out P(B|A)

since we took a reggae song before now we have only a reggae song

and total 8-1=7

therefore

\displaystyle  \rm P(B\mid A) =  \frac{1}{7}

Altogether

\displaystyle \rm P(A  \:  \text{and} \: B) = \frac{1}{4}  \times  \frac{1}{7}

simplify multiplication:

\displaystyle \rm P(A  \:  \text{and} \: B) = \frac{1}{28}

And we are done!

7 0
3 years ago
In the Diagram below? DE is parallel to XY. What is the value of x?
s344n2d4d5 [400]

Answer:

x = 85

Step-by-step explanation:

If DE is parallel to XY and if DE = 85 then  XY =85

[RevyBreeze]

8 0
2 years ago
Help and you get candy :3
vesna_86 [32]

Answer:

40

Step-by-step explanation:

5 x 8 = 40

8 0
3 years ago
Read 2 more answers
WHICH OF THE FOLLOWING REPRESENTS A NON LINEAR EQUATION
sertanlavr [38]

Answer:

y = 3/x

Step-by-step explanation:

3 0
2 years ago
What is the value of <br> 56÷37?<br> 56÷37?
Galina-37 [17]

Answer:

exact form is 56/37

decimal form is 1.513

mixed number form is 1 19/37

Step-by-step explanation:

8 0
2 years ago
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