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FromTheMoon [43]
3 years ago
9

Janet has 7 markers in a backpack. One of them is orange and one is blue. Find the probability Janet will reach into the backpac

k without looking and grab the orange marker and then reach in a second time and grab the blue marker. Express your answer as a fraction in the simplest form 1/49 1/13 1/7 1/42
Mathematics
1 answer:
sammy [17]3 years ago
3 0

Answer:

a) Not replaced

Yelllow marker First - Then Blue Marker  =

 

(1/10)(1/9)  =  1/90

 

b) Replaced

 

(1/10) (1/10)  = 1/100

 

Answer   "C"

Step-by-step explanation:

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Advocard [28]
She has 6 kids (2 boys, 4 girls, since her total amount of kids is three times the amount of boys, 2 x 3 = 6 total)

4 girls : 2 boys

compare ratios with the answer choices.

4:2 =\= 4:8

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4:2 =\= 6:9

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7 0
3 years ago
Grace loves to download new music. She originally had 47 songs but plans to purchase 3 new songs each week. She wants to know ho
Leokris [45]

Answer:

Hence, the equation that represents the number of songs she will have after 104 weeks is:

a_{104}=47+(104-1)\times 3

Step-by-step explanation:

It is given that:

originally had 47 songs but plans to purchase 3 new songs each week. She wants to know how many songs she will have after 104 weeks.

Based on the data we see that:

Initial number of songs she has:

a_1=47

The number of songs she will have after second week is:

a_2=47+3=47+3\times (2-1)

After Third week:

a_3=47+3+3\\\\a_2=47+3\times (3-1)

and so on:

After 104 weeks she will have:

a_{104}=47+(104-1)\times 3

Hence, option: C is the correct answer.

( This could also be seen as it form an arithmetic progression with initial term as a=47 and common difference i.e. d=3

Hence, the nth term is given by:

a_n=a+(n-1)\times d

)

6 0
2 years ago
Read 2 more answers
What is the volume of a cylinder, in cubic feet, with a height of 13 feet and a base
VashaNatasha [74]

Answer:

163.3

Step-by-step explanation:

3.14*r^2*h

h=13

4/2 = 2

r=2

2^2 = 4

3.14*4 = 12.56

12.56*13 = 163.28

Rounded = 163.3

I believe the answer is 163.3

6 0
2 years ago
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