laequity3393
22.05.2020 •
Mathematics
A culture started with 6,000 bateria after 6 hours,it grew to 7,200 .predict how many bacteria will be present after 17 hours round your answer to the nearest whole number
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Ответ:
10058
Step-by-step explanation:
The equation is of the form
y = ab^x
Where a is the initial value, y is the final amount and x is the time
y = 6000 b^x
7200 = 6000 b^6
Divide each side by 6000
7200/6000 = b^6
1.2 = b^6
Take the 6th root on each side
1.2 ^ 1/6 = b^6 ^ 1/6
1.030853321 = b
y = 6000 (1.030853321) ^ x
Let x = 17
y = 6000 (1.030853321) ^ 17
y=10057.68696
Rounding to the nearest whole number
y = 10058
Ответ:
10,058
Step-by-step explanation:
7200 = 6000(r)⁶
r⁶ = 1.2
r = 1.2^⅙
In 17 hours,
6000(1.2^⅙)¹⁷
10057.68696
Ответ:
6
Step-by-step explanation:
3(-2)²+7(-2)-(-2)³
12+(-14)-(-8)
12-14+8
=6