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TEA [102]
3 years ago
9

A scientist counts 25 bacteria present in a culture and finds that the number of bacteria tripled each hour. the function y=25•3

^x models the number of bacteria after x hours. estimate when there will be about 1170 bacteria in the culture.
A. about 3.5 hours
B. about 5.5 hours
C. about 2.5 hours
D. about 4.5 hours
Mathematics
2 answers:
LUCKY_DIMON [66]3 years ago
5 0

Answer: The answer is 3.5

Step-by-step explanation:

alekssr [168]3 years ago
3 0

Answer:

3.5

Step-by-step explanation:

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Answer:

2) The second option (the bag)

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9) HH, HT, TT, TH: 1/4

Step-by-step explanation:

2)

O -  Not certain, it is possible to choose a green marble

O - Certain, all the numbers in the bag are less than 100, so the one you choose must be less than 105

O - Not certain, the spinner will not always land on the 10th letter of the alphabet

O - Not certain, the sum of the number cubes will not always be 12, depending on the number you roll

8)

Size: Small cup, Large cup, Regular cone, Waffle cone

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With a small cup:

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There are 4 possibilities for types of cups

Multiply

4 * 9

36

9)

The question is asking what would the sample space be of flipping a coin 2 times. You will not always alternate (heads, tails, heads, tails) when flipping a coin. This means that all of the possibilities are HH, HT, TT, TH.

Chance of getting heads = 1/2

Chance of getting tails = 1/2

Chance of getting 2 heads (divide by 2) = 1/4

Chance of getting 2 tails = 1/4

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