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
notsponge [240]
3 years ago
11

The population of algae in an

Mathematics
1 answer:
mezya [45]3 years ago
5 0

The equation is y = 20(1.40)^x

where x is the number of days and y is the future amount after x days go by

The 1.40 is from the fact that 1+r = 1+0.40 = 1.40, where r is the decimal form of 40%, so r = 0.40

-----------------------------

Plug in x = 7 to get

y = 20(1.40)^x

y = 20(1.40)^7

y = 210.827008

y = 211

We round to the nearest whole number since it doesn't make much sense to have a fractional portion of an algae. After 7 days, there are about <u>211</u> algae.

You might be interested in
Solve this question<br> 2(x+3)=x-4
Whitepunk [10]

Answer:

x=-10

Step-by-step explanation:

2(x+3)=x-4 (Multiply the 2 by the x and the 3);

2x+6=x-4 (Now you group like terms)

2x-x=-4-6

x=-10

8 0
2 years ago
Read 2 more answers
One number is five more than a second number. The product of the numbers is 3,300. Find the two numbers
krek1111 [17]
A = b+5
ab = 3300
(b+5)b = 3300
b² +5b -3300 = 0  (quadratic formula)
b=55
a=60      (by first relation)
7 0
3 years ago
What is the factored form of -1/2(32x - 40) - (20x - 4)? ​
inna [77]

Answer:

12(-3x + 2)

Step-by-step explanation:

-1/2 ( 32x - 40) - (20x - 4) = -16x + 20 - 20x + 4 = -36x + 24 = 6(-6x + 4) = 12(-3x + 2)

8 0
2 years ago
Read 2 more answers
NEED HELP PLEASE!!! Please explain your answer!
Zanzabum
             <span> You must make it a fraction by multiplying by 100, moving the decimal over by 2 spaces right so we have 36. Then, put it over 100, because it is a fraction. Now, with 36/100 we must simplify by dividing each number by another # that goes into it evenly, such as 2. We get 18/50, reduce by 2, we get 9/25. There you go hope I helped </span>
7 0
2 years ago
Read 2 more answers
All of the following are equivalent except _____.
Inessa05 [86]
(5_5)x is not equalant
3 0
2 years ago
Read 2 more answers
Other questions:
  • Does choosing a blue marble represent the complement event of choosing a red marble
    8·2 answers
  • The price of gold is often reported per ounce. At the end of 2005, this price was $513. At the end of 2015, it was $1060. By wha
    12·1 answer
  • The student activities department of a community college plans to rent buses and vans for a spring-break trip. Each bus has 40 r
    5·2 answers
  • Explain how to find the surface area of a can of fruit with a height of 80 mm and a diameter of 60 mm. Give the area in your exp
    13·2 answers
  • What is the area of this parallelogram
    8·1 answer
  • a photograph is printed in the center of a piece of paper measuring 7 cm by (x + 8) cm. The photo measures 5 cm by (x +6) cm . T
    6·1 answer
  • Display the data in a dot plot
    6·1 answer
  • Is this correct? Yes or no, and explain your answer.
    14·1 answer
  • 7b^2-63b+140 Factor the polynomial (show your work)
    7·1 answer
  • How much it’s 7 times 6
    8·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!