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evablogger [386]
3 years ago
14

A box contains 4 red and 5 green marbles. if 6 marbles are drawn without replacement, what is the expected number of red marbles

?
Mathematics
2 answers:
qaws [65]3 years ago
6 0
The expected number is 2 marbles
cricket20 [7]3 years ago
6 0
I hope this helps i believe it is 1/3<span />
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You start driving north for 9 miles, turn right, and drive east for another 40 miles. At the end of driving, what is your straig
Vsevolod [243]

The straight line distance from the starting point is 41 miles.

<u>Explanation:</u>

Given:

Distance covered towards north, n = 9 miles

Distance covered towards east, e = 40 miles

Distance from the origin to the end, x = ?

If we imagine this, then the route forms a right angle triangle

where,

n is the height

e is the base

x is the hypotenuse

Using pythagoras theorm:

(x)² = (n)² + (e)²

(x)² = (9)² + (40)²

(x)² = 1681

x = 41 miles

Therefore, the straight line distance from the starting point is 41 miles.

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Step-by-step explanation:

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Step-by-step explanation:

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