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2 years ago

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:

k = 0.2645

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 $e^{3k}$

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

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

Taking natural logarithm on both sides, we get:

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

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

lne=1

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

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

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

k = 0.2645

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 5 minutes = 48 miles x minute = 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