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
julsineya [31]
3 years ago
8

At the beginning of an experiment, there are 400 grams of contaminants. Each hour, three-fourths of the contaminants are filtere

d out.
A. Formulate a recursive sequence modeling the number of grams after "n" hours.

B. Use the model to calculate the amount of contaminants after the third hour of the experiment.
Mathematics
1 answer:
WITCHER [35]3 years ago
7 0
<span>a(n) = 0.75*a(n-1)
</span><span>Ans: 400 ; (3/4)400 = 300 ; (3/4)300 = 900/4 ; (3/4)900/4 = 2700/16 = 168.75g's</span>
You might be interested in
3 Graph the system of equations using the line tool. Drag N Drop the rectangle to match the type of solution. If the system has
Ivahew [28]

noooo

Step-by-step explanation:

hreg fthbuyrurbu5jhbf rf rhjfr hbn  jkjlnik

5 0
2 years ago
Sales of 10 000 increase by 65 each year​
lorasvet [3.4K]

Answer:

Whats the question

Step-by-step explanation:

also if you are looking for the unit rate its <u><em>153.846...</em></u>

or if you are looking for how many in 2 years then <u><em>650,000</em></u>

<u><em>Hope this helps </em></u>

<u><em>Have a nice day</em></u> :)

3 0
3 years ago
Read 2 more answers
When a trend line is drawn on a scatterplot, there are 4 points above the trend line. About how many points should be below the
scoundrel [369]
There is no exact rule for lines of best fit. However, in general, there should be roughly the same amount above as below. So, if we are following this rule, there should be about 4 below as well. 
5 0
3 years ago
Read 2 more answers
Suzanna uses a 1/4 cup measuring scoop to make her coffee. If she needs to fill her coffee filter with 2 cuos of coffe grounds,h
lilavasa [31]

Answer:

8

Step-by-step explanation:

1/4 times 8 is 2

6 0
3 years ago
Marcus painted 1/3 of his bedroom in 4/5 of an hour. At this rate, how long would it take him the paint the entire room? I need
expeople1 [14]
So it took him 4/5 of an  hour to paint 1/3 
that means there is still 2/3 to go 
so that means that he will have two times that time to paint the rest of the room
<u>4/5</u>    = <u> ? </u>
1/3       2/3 

using cross multiplication

(4/5)(2/3) = (1/3) (?)
8/15 = 1/3 ?
divide both sides by 1/3
so that will be 8/5
that means it will take 8/5 of an hour to complete the rest 
or 12/5 total to do entire room

Hope this helps ;)
7 0
2 years ago
Other questions:
  • Pls help! <br><br> what is x² - 11x + 19 = -5<br><br> will mark brainliest
    7·2 answers
  • Find the probability that a randomly selected multiple birth for women​ 15-54 years old involved a mother who was at least 40 ye
    7·2 answers
  • Cows slippers cost 250 a pair how much money do you u need
    6·1 answer
  • Can you help me please?
    7·1 answer
  • The formula Upper A equals 23.1 e Superscript 0.0152 tA=23.1e0.0152t models the population of a US​ state, A, in​ millions, t ye
    12·1 answer
  • What is the solution to the system of equations 3x + 3 and y =2x+1?
    7·1 answer
  • What's a Constant of 17?
    5·1 answer
  • Help me you will get the brain thing
    12·2 answers
  • Given the system of linear equations:
    12·1 answer
  • Can someone help me i dont know how to even do this<br> ??
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!