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rbgrh5779
05.05.2020 •
Mathematics
Mr. Frank has 1.08 kilograms of fertilizer for the plants in his nursery. He wants every plant to get 98 mg of fertilizer 4 times each year. What is the number of plants he could fertilize with that amount?
How much fertilizer will he have left over?
He can fertilize
plants with
mg left over.
Solved
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Ответ:
linearly: 8560 bacteria
exponentially: approximately 75233 bacteria
step-by-step explanation:
assuming it is not exponential (we would have some really complicated logarithms), let's say it is linear. then, after 5 hours, it increased by 1200 bacteria, so every hour it increases by 240 bacteria. this means that after 19 hours, we get 19 * 240 + 4000 bacteria or 3800 + 760 + 4000 = 7800 + 760 = 8560 bacteria.
because it says round your answer, i will do this exponentially (with a calculator, of course). first, we need to find how much it multiplies by every hour, by taking the 5th root of 52/40 or 13/10. this is approximately 0.167. we still need to add 1 to this, because we are multiplying by that number, not adding that amount of the number. now, we just calculate 4000 * (1.167)^19. use a calculator to get approximately 75232.6, or 75233.