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k0ka [10]
3 years ago
5

Probabilities where the focus is on just one group of objects and a random sample is taken from that group alone are called​ wha

t?
Mathematics
1 answer:
JulsSmile [24]3 years ago
7 0
I think the answer would be conditional probability. It is a type of probability that the focus is on a certain group and taking a sample from it randomly. It is the probability of a certain event basing on the occurrence of an event that happens previously.<span />
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89,235 written in expanded form? (2 points)
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Answer:

3 is the answer

Step-by-step explanation:

answer up above

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3 years ago
Read 2 more answers
Jim began a 165 mile bicycle trip to build up stamina for a triathlete competition unfortunately his bike chain broke so he fini
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Answer: Approximately 4.7 hours.

Step-by-step explanation:

He rode the bicycle for some time before it broke down and he walked the remaining distance. This means that Jim covered a total of 165 miles by riding at a speed of 35 miles per hour and walking at a speed of 3 miles per hour.

Let x = the distance covered by riding the bicycle.

Let y = the distance covered by walking.

Time = distance /speed

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Time he used in walking would be y/3

Since the entire trip took 7 hours,

x/35 + y/3 = 7

3x + 35y = 735 - - - - - - - - 1

Total miles covered is 165. Therefore,

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Substituting x = 165-y into equation 1, it becomes

3(165-y) + 35y = 735

495-3y + 35y = 735

-3y + 135y = 735-495

132y = 240

y = 240/132

y = 1.81m

x = 165 - 1.81 = 163.19

Amount of time that he spent on the bicycle will be

x/35 = 163.19/35

= 4.66

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7 0
4 years ago
If x+3/3 = y+2/ 2 , then x/3 = _____.​
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the question is not so clear

is it (x+3)/3 or what you have written is correct

Step-by-step explanation:

4 0
3 years ago
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