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Anestetic [448]
4 years ago
11

sock drawer contains 18 blue socks and 10 black socks. If two socks are randomly drawn from the drawer without replacement, what

is the probability that two black socks are chosen?
Mathematics
1 answer:
NeX [460]4 years ago
3 0
 The probability is 10 out of 28
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He roots of x2 − (<br> ) + 34 are 5 ± 3i.
GrogVix [38]
Use the quadratic formula, x=\frac{-b+ \sqrt{ b^{2}-4ac} }{2a}
(don't know how to type the "-"sign in the formula, so there is only the "+" in the formula)
in this case, a=1, c=34, b is unknown
from the roots, we can tell that -b+\sqrt{b^{2}-4ac } =2(5+3i)=10+6i

Note: the original equation already give b as -b, so -(-b)=10, b=10
using b^2-4ac=(6I)^2,
b^2-4*34=-36
b^2=100
you will also get b=10
5 0
3 years ago
What is 8640minutes in days?(remember ,there are 60minutes in an hour and 24 in a day
Free_Kalibri [48]
8640min (\frac{1 hr}{60 min})  (\frac{1 day}{24 hr}) = 6 days
5 0
3 years ago
Read 2 more answers
Please help me with this please.
natali 33 [55]

Answer:

f(-2) = -1

f(0) = -5

f(4) = -1

Step-by-step explanation:

The number inside of f( ) is telling you which equation to use to get the answer.

Example:

f(-2) since -2 is less than 0 you would use (x^2) - 5. So, ((-2)^2) - 5 = 4-5 = -1

f(0) since 0 is less than or equal to 0 you would use (x^2) - 5 again. So, ((0)^2) - 5 = 0-5 = -5

f(4) since 4 is grater than 3 you would use (2^(x-1)) - 9. So, (2^(4-1)) - 9 =  -1

<u><em>The Graph, try to make it as straight as possible</em></u>

<u><em></em></u>

6 0
3 years ago
What is the corresponding index of the random matrix of 7 criteria for checking consistency of random judgment?
Ymorist [56]

A. 0.58  is the corresponding index of the random matrix of 7 criteria for checking the consistency of random judgment.

In probability theory and mathematical physics, a random matrix is ​​a matrix-valued random variable. H. A matrix whose elements are some or all random variables. Many important properties of physical systems can be represented mathematically as matrix problems.

In probability theory and mathematical physics, a random matrix is ​​a matrix-valued random variable. That is, a matrix whose elements are some or all random variables. Many important properties of physical systems can be represented mathematically as matrix problems.

Learn more about matrix  here: brainly.com/question/2456804

#SPJ4

7 0
2 years ago
Angel is making bags of trail mix for hiking club. He will use 20 ounces of walnuts, 11.2 ounces of almonds, and 14.3 ounces of
zheka24 [161]

Answer:

1.82 oz.

Step-by-step explanation:

20 oz. walnuts/25 bags = 0.8

11.2 oz. almonds/25 bags = 0.448

14.3 oz. cashews/25 bags= 0.572

8 0
3 years ago
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