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NARA [144]
3 years ago
11

A bag contains 19 white balls and 6 black balls. the balls are drawn with replacement. what is the expected number of white ball

s drawn before the 13 th black ball is drawn.
Mathematics
1 answer:
MrRissso [65]3 years ago
3 0
For every four white balls taken out one black ball is taken out so it would be the 52 white ball
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One side of a square is 5n inches long. Another side is n + 16 inches long. How long is a side of the square?
LiRa [457]
Its a square.
So 5n = n + 16
Therefore 4n = 16 (taking one n from each side).
So n = 16/4 which is simplied as : 4.
Double check by putting 4 in the equation where n is, and it makes sense, so that is the right answer.
Your answer is c.
5 0
3 years ago
Read 2 more answers
plesee help me do I need it under 25min and don't answer if you don't know or else u will be reported thank you (◔‿◔)​
34kurt

Answer:

l = 2.25 cm

Step-by-step explanation:

given l is inversely proportional to w² then the equation relating them is

l = \frac{k}{w^2} ← k is the constant of proportion

(i)

to find k use the condition w = 1.5 , l = 16 , then

16 = \frac{k}{1.5^2} = \frac{k}{2.25} ( multiply both sides by 2.25 )

36 = k

l = \frac{36}{w^2} ← equation of proportion

(ii)

when w = 4 , then

l = \frac{36}{4^2} = \frac{36}{16} = 2.25 cm

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2 years ago
Which of the following BEST summarizes how to use the multiplication property of equality to isolate the
borishaifa [10]

Answer:

A. divide only on the right side of the equation by 2.

Step-by-step explanation:

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Which is bigger 2/5 or 4/9
Jlenok [28]
The easiest way to solve this comparison without any unusual comparisons is to find a common denominator for the two fractions.

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Since 20/45 is bigger than 18/45, we know that 4/9 is greater than 2/5
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