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pochemuha
2 years ago
12

There are nine different types of bacteria on the Petri dish.

Mathematics
1 answer:
Olenka [21]2 years ago
5 0

37 percent of the bacteria on the Petri dish is type 3

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The number y of hits a new website receives each month can be modeled by y = 4070ekt, where t represents the number of months th
makvit [3.9K]

Answer:

<u><em>k = 0.2645</em></u>

Step-by-step explanation:

Given model:

y = 4070 e^{kt}

y = no. of hits website received = 9000 (in 3rd month)

t= no. of months website has been operational = 3

put in the above equation:

9000 = 4070  e^{3k}

\frac{9000}{4070} = e^{3k}

\frac{900}{407}=e^{3k}

<u><em>Taking natural logarithm on both sides, we get:</em></u>

ln\frac{900}{407}=ln(e^{3k})

ln\frac{900}{407}= 3k ln<em>e</em>

ln<em>e</em>=1

ln \frac{900}{407}= 3k

or k = \frac{1}{3}ln\frac{900}{(407)}

k =\frac{1}{3}(0.7936)

<em>k = 0.2645</em>

<em />

7 0
3 years ago
if a number is increased by 5 and the result is then divided by three,the result is seven. write an equation that models this ve
gregori [183]
A number (we don’t know the number so I’ll use X) plus five. So we can start the equation of with X+5 then divided by 3=7 so X+5➗3=7 so to solve what X is we can just go in reverse. 7 TIMES 3= 21-5=16 so X=16
6 0
3 years ago
Read 2 more answers
Yesterday I ran 9.6 miles at an average speed of 0.4 miles per 5 minutes. How long did it take me to run the 96 miles?​
Alexeev081 [22]

Answer:

Step-by-step explanation:

This is how we do it in college, I hope I can be of some help.

First, you multiple 9.6 miles with 5 minutes. Then, you divide your answer with 0.4 miles. Next, you cancel the two mile units because of division and then be left with 120 minutes.

9.6 miles x <u>    5 minutes   </u> = <u>  48 miles x minute </u> = 120 minutes

                      0.4 miles          0.4 miles

8 0
3 years ago
Help please!!! I need it!
Grace [21]

Answer:

1300.62

Step-by-step explanation:

thank me later lolol.

8 0
3 years ago
Pam and Jena, working together, can weed the garden in 9 hours. Working alone, Jena takes three times as long as Pam. How long d
Ghella [55]

Answer:

2 hours and 15 minutes

Step-by-step explanation:

9 hours divided by 4 is 2 hours and 15 minutes

Then you can multiply 2 hours and 15 minutes by 3 to get 6 hours and 45 minutes which is Jena's time weeding the garden alone.

4 0
3 years ago
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