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nadia74
25.01.2020 •
Mathematics
The number of bacteria in a petri dish triples every month. if the dish started with 2500 bacteria how much will be in ten months?
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Ответ:
Below
Step-by-step explanation:
The dish had intially 2500 bacteria. The bacteria triples every month.
So after a month the number will be 7500 =>(2500×3)
So let 2500 be the n0 and 7500 be n1
● n1 = 3×n0
Following the same way we get:
● n2= 3× n1
● n3 = 3× n2
If we kept repeating the same process we will get:
● n9 = n8 × 3
n9 is the number of Bacteria during the 10th month
let's calculate n9.
● n9 = n8 × 3
● n9 = n0 × 3^10
● n9 = 2500 × 3^10
● n9 = 147 622 500
● n9 = 1.476225 ÷ 10^8
Ответ:
She makes 2.50 $ a hour and she will make 20 $ at 8 hours