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Andrei [34K]
3 years ago
8

Kieran’s wallet contains 7 bills: three $5 bills, two $10 bills, one $20 bill, and one $100 bill. If Kieran pulls out two bills

at random, what is the probability that he selects exactly two $5 bills?
Use complete sentences to explain the probability. In your final answer, include all of your calculations.
Mathematics
2 answers:
Vladimir79 [104]3 years ago
8 0
3/7
3 \div 7
Setler79 [48]3 years ago
3 0

Answer:

The answer is 1/7.

Step-by-step explanation:

So, basically, 7 bills, and there is a 3/7 chance to collect 1. Another 1/3 to collect another one, which is actually 1/7.

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What is 7 9/13 as an improper fraction
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7 9/13
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6 0
3 years ago
The price of 7 cell phones, 9 TV sets and 12 air-conditioners is
mezya [45]

here, 7 cellphone,9 Tv, 12airconditioners = 8723

5 cellphone,7 Tv, 12airconditioners = 6523

or, 7,9,12=8723

-5,7,9=6523

______________

2,2,3=2191

then,

to make 4 cellphone , 4 tv set , 6 air conditioners add twice the answer ,

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____________

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hence,

the price of 4 cellphone , 4 tv set and 6 air conditioners is 4382 #

solved by

<h3> pratik</h3>

6 0
3 years ago
What is the explicit formula for this sequence?
Zarrin [17]

Step-by-step explanation:

The above sequence is a geometric sequence

For an nth term in a geometric sequence

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where

n is the number of terms

a is the first term

r is the common ratio

From the question

a = 5

r = 10/5 = 2

Therefore the explicit formula for this sequence is

a(n) = 5( {2})^{n - 1}

Hope this helps you

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