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
marusya05 [52]
3 years ago
6

What is the doubling time of bacteria if you start with two bacteria and there are 128 bacteria after 3hrs?

Mathematics
1 answer:
iogann1982 [59]3 years ago
5 0

Answer:

B) 30min

Step-by-step explanation:

Start with 2 and continue to multiply that by 2 until you get 128

2 x 2 = 4

4 x 2 = 8

8 x 2 = 16

16 x 2 = 32

32 x 2 = 64

64 x 2 = 128

Then start with what you think could be the right answer based on how many intervals there are.

You know it can't be 15 because there definitely isn't enough and you know its not 1hr because theres way more than 3.

So you're left with either B) 30min or C) 45min

It has to be B) 30min because there are 6 intervals and 30min goes into an hour twice, meaning that if every 2 intervals is an hour there are 3 hours.

You might be interested in
How do you know if you have to divide or multiply in a ratio problem?
romanna [79]

Answer: you looking for ways to calculate ratio problems quickly and accurately? Learn the best methods here, with useful diagrams – and find out what to avoid too. … Ratios can be scaled up or down by multiplying both parts of the ratio … the ratio by the largest number that they can both be divided by

Step-by-step explanation:

<h2> you looking for ways to calculate ratio problems quickly and accurately? Learn the best methods here, with useful diagrams – and find out what to avoid too. ... Ratios can be scaled up or down by multiplying both parts of the ratio ... the ratio by the largest number that they can both be divided bydid this help</h2>
3 0
2 years ago
If Upper A equals StartSet x | x is an even integer EndSet commaA={x | x is an even integer}, Upper B equals StartSet x | x is a
White raven [17]

Answer:

C ∪ D = {2, 3, 4, 5, 8, 9, 10, 11}

Step-by-step explanation:

A={x | x is an even integer}

B={x | x is an odd integer},

C={2, 3, 4, 5},

D={8, 9, 10, 11}.

A union of two or more sets is the collection of the members of the sets in a set without repeating any element.

Given sets C and D above, the union of the two sets is the set:

C ∪ D = {2, 3, 4, 5, 8, 9, 10, 11}

Note: The Intersection is the collection of sets that are common to C and D. in this case no element is common, therefore the intersection is a Null Set.

8 0
3 years ago
Find the slope and y intercept of the line represented by each table
d1i1m1o1n [39]

5. m=3 because 6/2 is the slope. b= 1

6. m= -4 because -20/5 is the slope. b= 140

5 0
3 years ago
Q #5 please I need your help
mojhsa [17]

"Standard form" is the form ...

... ax +by = c

where a, b, c are mutually prime integers and the leading coefficient is positive. (If a ≠ 0, then it is "leading". If a = 0, then b is the leading coefficient.)

Of the choices offered, the only one that is equivalent to the given equation is ...

... -x + 6y = 5

_____

However, "standard form" requires the leading coefficient be positive, so an appropriate answer would be ...

... x -6y = -5

or

... 6y -x = 5

____

This is another one for my "broken question" file.

4 0
3 years ago
What effect does changing the function g(x)=log x to f(x)=log(x-5) -3 have on graph of g(x)?
jarptica [38.1K]
It moves the graph to the right "5" units
And down 3 units
6 0
3 years ago
Other questions:
  • PLEASE!EXTRA CREDIT!20 POINTS!!
    12·1 answer
  • SOMEONE PLEASE HELP ME! I've been stuck on this for over 3 hours and i really need help! I'm offering 40 points!
    14·2 answers
  • What is the slope of the line that passes through the points (2, –3) and (–2, 5)?
    10·2 answers
  • I have one half of a square and i want to divide it one eighth how many pieces would I have
    7·2 answers
  • Find three consecutive positive integers such that the sum of their squares is 2354. What is the largest integer?
    10·1 answer
  • Evaluet 2-(4-x) when x=-5​
    7·1 answer
  • I’m not sure how to do this please help
    5·1 answer
  • Please helpppp i will brainlisy anyone who helps
    10·1 answer
  • I need a step by step explanation on how you solved the equation.
    9·1 answer
  • A baker has 88 muffins. he fills large boxes the hold 9 muffins he puts the leftovers in small box how many muffins are in the s
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!