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lianna [129]
4 years ago
8

An urn contains 5 white ball and 8 black balls. 4 balls are randomly selected.

Mathematics
1 answer:
larisa86 [58]4 years ago
5 0

|\Omega|=13^4=28561\\ |A|=8^3\cdot5=2560\\\\ P(A)=\dfrac{2560}{28561}\approx9\%

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What is 4×7 Please answer
stealth61 [152]
4 x 7= 28

BTW no calculator. Did it in my head. Hope this helps!
5 0
4 years ago
Read 2 more answers
Trops have 3 eyes
svet-max [94.6K]

Answer:

3 trops

11 bops

Step-by-step explanation:

3×3=9

11×2=22

22+9=31

6 0
3 years ago
Replace ∗ with a monomial so that the trinomial may be represented by a square of a binomial: 25a^2+ ∗ + 1/4b^2
Nadya [2.5K]
The square of a binomial is a pattern you would do well to remember.
.. (x +y)^2 = x^2 +2xy +y^2

Your expression has x^2 = 25a^2, so x = 5a. It also has y^2 = (b^2)/4, so y = b/2.
then the middle term is
.. 2xy = 2(5a)(b/2) = 5ab

The trinomial is
.. 25a^2 +5ab +(1/4)b^2 = (5a +b/2)^2
7 0
4 years ago
Ok question 3 =)<br> thank you so much
otez555 [7]

Answer:

e. no solution

Step-by-step explanation:

steps shown

6 0
4 years ago
The book, Moby Di*ck, is 654 1⁄2 pages long. If Cheyenne has read 432 1⁄8 pages of the book, how many more pages does she have l
mylen [45]

Answer:

117793457

Step-by-step explanation:

You have to Know this, but Don't worry I'll help you Cause you must know this!   converting mixed numbers to fractions, our initial equation becomes,

13092÷34578

13092÷34578

Applying the fractions formula for division,

=1309×82×3457

=1309×82×3457

=104726914

=104726914

Simplifying 10472/6914, the answer is

=117793457                                :)                          

8 0
3 years ago
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