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vesna_86 [32]
2 years ago
15

Solve this with the explanation please

Mathematics
1 answer:
nikitadnepr [17]2 years ago
8 0
  1. yes,
  2. 301 times.

Hope it helps

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In a lab experiment, 720 bacteria are placed in a Petri dish. The conditions are such that the number of bacteria is able to dou
MakcuM [25]

Answer:

22.4 hours

Step-by-step explanation:

The population of bacteria is modelled by the equation:

P=P_0e^{rt}

From the the question, the initial population of bacteria is 720.

So after 26 hours, we have:

P=2P_0

This implies that:

2P_0=P_0e^{26r}

2=e^{26r}

26r =  ln(2)

r =  \frac{ ln(2) }{26}

r = 0.0267

We want to find how long it will take for there to be 1310 bacteria present.

1310=720e^{0.0267t}

\frac{1310}{720}  =  {e}^{0.0267t}

\ln(\frac{1310}{720})  = {0.0267t}

0.59853= {0.0267t}  \\ t =  \frac{0.59853}{0.0267}

t = 22.417

To the nearest tenth , it will take 22.4 hours

6 0
3 years ago
Help Please !!!! Very Confused, do not understand how to complete these 2 questions properly.
Varvara68 [4.7K]

Answer:

11) tan(7x+3) = OE/OJ

7x+3=arctan(OE/OJ)=45

x=6


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50+x+90=180

x=40


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aj=ac

aq=qa

right angle equal

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3 years ago
How do you write -4 less than a number ​
slega [8]
You do that number -4
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Causal models a. provide evidence of a causal relationship between an independent variable and the variable to be forecast. b. u
marshall27 [118]

Answer:A. provide evidence of a causal relationship between an independent variable and the variable to be forecast

Step-by-step explanation: Casual model tends to show the cause and effect relationship between the dependent variable to be forcasted and the independent variables upon which the dependent variable is dependent.

Casual model is frequently used in the field of Statistics and Economics when making forcasts about future investments or the cause of certain events,knowing what activities to carry out in the future.

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3 years ago
Write an expression to show k less than 3.5
Natalija [7]
Answer: k < 3.5
explanation: < means less than and > means more than and = means equal to so k < (less than) 3.5
5 0
3 years ago
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