1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Dmitriy789 [7]
3 years ago
5

The number of bacteria in a certain population increases according to a continuous exponential growth model, with a growth rate

parameter of 7.1 % per hour. How many hours does it take for the size of the sample to double?
Mathematics
1 answer:
Harrizon [31]3 years ago
4 0
Double
from initial amont of P to final amount of 2P
so

2P=P(1.071)^time
divide both sides by P
2=1.071^time
take the ln of both sides
ln2=timeln1.071
divide both sides by ln 1.071
(ln2)/(ln1.071)=time needed
using calculator
10.1052=time needed
about 10.1 hours
You might be interested in
place the following steps in order to complete the square and solve the quadratic equation, x^2-6x+7=0
MatroZZZ [7]
We have that
x²<span>-6x+7=0
</span>Group terms that contain the same variable
(x²-6x)+7=0
Complete the square  Remember to balance the equation
(x²-6x+9-9)+7=0
Rewrite as perfect squares
(x-3)²+7-9=0
(x-3)²-2=0
(x-3)²=2
(x-3)=(+/-)√2
x=(+/-)√2+3

the solutions are
x=√2+3
x=-√2+3



4 0
3 years ago
10. Find the mean, median of the following data.
Mariana [72]

Answer:

A

Step-by-step explanation:

You find the mean by adding all the values then dividing that sum by the amount of values

You find the median by putting the numbers in order from least to greatest and then find the middle number.

4 0
3 years ago
Read 2 more answers
Find the distance between<br> (-1, - 3) and (8, – 3).
dimaraw [331]

Answer: d (A,B) = 9

Step-by-step explanation: d(A,B) = √(xB - xA)^2 + (yB - yA)^2

                                              d(A,B) = √(8-(-1))^2 + (-3 - (-3))^2

                                              d(A,B) = √81 + 0    

                                              d(A,B) = 9                                        

5 0
3 years ago
Find an equation for the line that passes through the points (-5,-5) and (1,4)
Andreas93 [3]

The general line through (a,b) and (c,d) is

(c-a)(y-b)=(d-b)(x-a)

Here that's

(1 - - 5)(y - - 5) = (4 - -5)(x - - 5)

6(y+5)=9(x+5)

6y + 30 = 9x + 45

-15 = 9x - 6y

3x - 2y = -5

Answer: 3x - 2y = -5

We could put that in slope intercept form,

2y = 3x + 5

y = (3/2) x + 5/2

Answer: y = (3/2) x + 5/2

3 0
3 years ago
The point (12, 5) is on the terminal side of angle θ.
Sonja [21]
Tanα=5/12

α=arctan(5/12)°

α≈22.62° (to nearest hundredth of a degree)
5 0
3 years ago
Other questions:
  • Based on the construction which statement must be true​
    8·1 answer
  • Anyone know the answer?
    10·1 answer
  • Which is more constant-weather or climate
    10·1 answer
  • Find the area of a playing field whichs area is 15 meters
    12·1 answer
  • Rachel is a stunt driver, and she's escaping from a building that is about to explode! The variable ddd models Rachel's distance
    8·1 answer
  • Which of the following is an example of the associative property?
    12·2 answers
  • 1)In an year the value of a motorcycle depreciates by 10% of its value at the beginning of that year.What is its value after two
    10·2 answers
  • What is the image point of ( -8,3) after a translation right 2 units and up 3 units? Submit Answer attempt out of 2 N​
    11·1 answer
  • What is the place value for 7 in 0.673
    11·2 answers
  • The rose garden’s boundary can easily be turned over to create a mirror image of the garden’s shape. If Vincent reflects the ori
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!