A certain colony of bacteria triples in length every 10min. Its length is now 1 millimeter. how long will it be in 40min?(show work please! and in a 6th grader form)
Answers
Answer 1
Answer:
Bacteria length = 1mm
It will triple four times by 40 min.
This can be shown as 3 to the power of 4; 3⁴ = 81
Original length * growth factor = final length
1 mm * 81 = final length
81 = final length
After 40 mins, the bacteria colony will be 81 mm in length.
It will triple four times by 40 min.
This can be shown as 3 to the power of 4; 3⁴ = 81
Original length * growth factor = final length
1 mm * 81 = final length
81 = final length
After 40 mins, the bacteria colony will be 81 mm in length.
Answer 2
Answer:
Think of it this way. Every ten minutes, its length is multiplied by 3.
After 10 minutes, it will be 3 ml long.
After 20 minutes, it will be 9 ml long.
After 30 minutes, it will be 27 ml long.
After 40 minutes, it will be 81ml long.
In other words, 1x3x3x3x3=81
After 10 minutes, it will be 3 ml long.
After 20 minutes, it will be 9 ml long.
After 30 minutes, it will be 27 ml long.
After 40 minutes, it will be 81ml long.
In other words, 1x3x3x3x3=81
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Okay the answer is 6.0×10^4, you move the decimal point behind the first number and count all the spaces you moved. You moved four spaces so it would be to the power of 4. So 6.0×10^4 is the answer.
Exponential notation is basically just getting rid of zeroes!
It's really simple, promise.
60,000 has four zeroes
(All you have to do is count them)
Then you just have to apply the 6... 6 times 10^4
Hope I helped!
It's really simple, promise.
60,000 has four zeroes
(All you have to do is count them)
Then you just have to apply the 6... 6 times 10^4
Hope I helped!