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
Anita is years older than Basilio. Three times Anita's age added to six times Basilio's age is 36. 1. Define the variables 2. Cr
Scilla [17]

Answer :Anita's age = 7 years

Basilio's age = 2.5 years

Step 1. Assign variables to Anita's and Basilio's ages.

Anita's age = A

Basilio's age = B

 

Step 2. Use the information given to form two equations.

Anita is 4-1/2 years older than Basilio

A = 4.5 + B

 

Three times Anita's age added to six times Basilio's age is 36

3A + 6B = 36

 

Step 3. Substitute the value of A from first equation in to the second equation and solve for B

3(4.5 + B) + 6B = 36

13.5 + 3B + 6B = 36

13.5 + 9B = 36

9B = 36 - 13.5

9B = 22.5

B = 22.5/9 = 2.5

 

Step 4. Find the value of A

A = 4.5 + 2.5 = 7

 

Answer:

Anita's age = 7 years

Basilio's age = 2.5 years

6 0
3 years ago
Your statement balance is $687.45. You have outstanding checks totaling $332.10 and an outstanding deposit for $124.21. What is
Aleksandr [31]

Answer:

261.48

Step-by-step explanation:

6 0
3 years ago
1) Find the Range of the following number set: (22,7, 22, 1, 7, 18, 18, 16, 6, 6} 2 points
lisabon 2012 [21]

Answer:

RANGE=21

Step-by-step explanation:

Least to greatest is KEY!

7 0
4 years ago
Danny's Bike Shop sells a certain model of racing bike for $550. The same bike can be bought at a competing shop for 7 percent l
AleksAgata [21]

Answer:

$511.5

Step-by-step explanation:

Given: Selling price of bike at Danny´s shop is $550

           Bike is sold 7% less at competitor´s shop.

Lets find the discounted amount at Danny´s competitor shop.

∴ \frac{7}{100} \times 550 = \$ 38.5

Now, finding the cost of bike at Danny´s competitor.

Cost of bike at Danny´competitor= (\textrm{Price at dannys shop - discount provided by competitor})

Cost of bike at Danny´s competitor= 550-38.5= \$511.5

∴ Cost of bike at Danny´s competitor is $511.5.

6 0
3 years ago
Find the length of OC.
frosja888 [35]

Answer:

About 8

Step-by-step explanation:

I found this by doing 16 divided by 2 since half of 16 is 8and AC and OC are congruent so I think it is 8.

6 0
4 years ago
Read 2 more answers
Other questions:
  • Julius is buying beverages for brunch. He needs to buy a total of 5 gallons of beverages. He decides to buy two containers of ea
    11·1 answer
  • $30 board game on sale for $20.10
    10·1 answer
  • An arc on a circle measures 125°. The measure of the central angle, in radians, is within which range? 0 to StartFraction pi Ove
    10·2 answers
  • Please help !!!!!<br> I need it asap
    12·1 answer
  • Wilma is twice as old as Jamal, and Jamal is 3 years older than Tim. The sum of all their ages is 17.
    11·1 answer
  • Can someone help plzzzz?
    9·2 answers
  • Can someone please answer the most recent question here's some points
    11·1 answer
  • PLZZZZZZZZZZZZ HELPpppppp
    9·1 answer
  • juan has three blue shirts, two green shirts, 7 red shirts, and five pairs of pants, and two pairs of khaki pants. How many diff
    13·1 answer
  • Sin 0 = -3/5<br> and cos 0 &gt; 0. Identify the quadrant of the terminal side of O and find cos 0.
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!