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Dvinal [7]
3 years ago
15

Please say this answer fast now​

Mathematics
1 answer:
ludmilkaskok [199]3 years ago
7 0

Answer:

4 is the correct answer of the question

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4. A drawer contains 21 black socks and 9 white socks. A number generator simulates randomly selecting 10 socks from the drawer.
Nookie1986 [14]

There are 21 black socks and 9 white socks. Theoretically, the probability of picking a black sock is 21/(21+9) = 21/30 = 0.70 = 70%

Assuming we select any given sock, and then put it back (or replace it with an identical copy), then we should expect about 0.70*10 = 7 black socks out of the 10 we pick from the drawer. If no replacement is made, then the expected sock count will likely be different.

The dot plot shows the data set is

{5, 5, 6, 6, 7, 7, 7, 8, 8, 8}

The middle-most value is between the first two '7's, so the median is (7+7)/2 = 14/2 = 7. This can be thought of as the average expected number of black socks to get based on this simulation. So that's why I consider it a fair number generator because it matches fairly closely with the theoretical expected number of black socks we should get. Again, this is all based on us replacing each sock after a selection is made.

4 0
2 years ago
Let u = in x and v = in y. Write in(x3y2) in terms of u and v
sleet_krkn [62]

Answer:

Step-by-step explanation:

you mean u=ln x,v=ln y

ln(x^3y^2)=lnx^3+ln y^2

=3 ln x+2 ln y

=3u+2v

8 0
3 years ago
Mrs. Lewis received her paycheck this week in the amount of $535.75. She spent $76.98 on groceries, she paid her $59.95 phone bi
SIZIF [17.4K]

Answer:

376.37

Step-by-step explanation:

5 0
3 years ago
Read 2 more answers
A triangle has sides with lengths of 6 inches, 13 inches, and 17 inches. Is it a right triangle?
Tems11 [23]

Answer:

Nope

Step-by-step explanation:

To now if a triangle is a right angle, use Pythagoras Theorem,

a^2 + b^2 = c^2

C usually be the longest side of the triangle, C = 17

Then also let a and b be 6 and 13 respectively.

6^2 + 13^2 =205

C^2 = 205

C = sqrt(205) = 14.32

therefore no this is not a right angle triangle

4 0
2 years ago
Solve the system of equations using substitution. Show your work. <br> y= 2x - 10<br> y= 4x - 8
Semenov [28]
Y=2x-10
Y=4x-8
U substitute it and it turns into 2x-10 =4x-8
U get x=-1
Y=4*(-1)-8
Y=-12
(x,y)= (-1,-12)
If u have a phone u can use photo math or if u don’t there’s a thing called mathpapa
4 0
3 years ago
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