Answer:
32√3
Step-by-step explanation:
I hope this helps... if not i dont know then
The probability that all three randomly selected envelopes are yellow without replacement is 1/84.
<h3>What is a combination?</h3>
It is an arrangement of a set of numbers from a total set where the order of the set is not relevant.
We have,
2 red envelopes
2 blue envelopes
2 green envelopes
3 yellow envelopes.
Total number of envelopes = 9
The probability that all three randomly selected envelopes are yellow without replacement.
=
= (3/9) x (2/8) x (1/7)
= (3x2x1)/(9x8x7)
= 1/84
Thus,
The probability that all three randomly selected envelopes are yellow without replacement is 1/84.
Learn more about combination here:
brainly.com/question/14355408
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9 cubed would be 9×9×9=729
Answer:
five congruent triangles
Step-by-step explanation: The area of the pentagon will be the sum of the five congruent triangles formed. The area of one of these triangles is equal to the side of the pentagon*height/2
hope this helps
1) 2x+(-2x+2x)=2x
2) 4x+5+(-3x^2-3x)=-3x^2+x+5