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sammy [17]
3 years ago
14

The answerand how to do it

Mathematics
1 answer:
AlladinOne [14]3 years ago
3 0
Xian = 56 stamps + 12 per month : 12m + 56
kai = 80 stamps +  8 per month : 8m + 80

when will they have same number of stamps ? set them equal.
m = number of months

12m + 56 = 8m + 80
12m - 8m = 80 - 56
4m = 24
m = 24/4
m = 6.....at 6 months, they will have the same number of stamps.
12m + 56 = 12(6) + 56 = 128
8m + 80 = 8(6) + 80 = 128
They will both have 128 stamps





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4 0
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A university has 27,900 students. In a random sample of 210 students, 14 speak 3 or more languages. Predict the number of studen
I am Lyosha [343]
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3 years ago
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3 0
2 years ago
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PLSS HELP ASAP
Mama L [17]

based on the number of marbles in the bag, the number of marble groups possible is 7,140 groups.

the probability of selecting 2 red and 1 yellow is 1/68.

<h3>what number of 3-marble groups can be made?</h3>

first, find the number of marbles:

= 7 + 8 + 9 + 7 + 5

= 36

the number of marble groups are:

= 36 ! / (3 ! x 33 !)

= 7,140 groups

the probability of picking 2 red and 1 yellow is:

= (( (7! / (2! x 5!)) x ( ( 5! / (1! x 4!))) / 7,140

= 1 / 68

= 1.47%

find out more on probability at brainly.com/question/13369680.

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