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Dovator [93]
3 years ago
13

In a lab, a scientist is growing bacteria for a study. The scientist begins with a bacteria population of b cells. She discovers

that after 3 hours, the population of bacteria is
b2 cells. Three hours later, the bacteria population is b3 cells. If the population of the bacteria after these 6 hours is one thousand cells, what was the population at the start? Explain how you found your answer.
Mathematics
2 answers:
emmasim [6.3K]3 years ago
6 0
I think the answer is
The sixt root of 1000
Mademuasel [1]3 years ago
3 0

Answer:

Initial population: b=10

Step-by-step explanation:

Initil population: b

After 3 hours: b²

After 6 hours: b³

It looks like a geometric progression, with ratio b.

Now, after 6 hours: b³=1000=10³

So, initial population is b=10. Note that b is also the growing ratio.

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How do you graph an explict equation
morpeh [17]
I think this might help but sorry if it does not but I hope it does :) :D - https://learnzillion.com/lesson_plans/5701-writing-an-explicit-formula-for-the-graph-of-an-exponential-relationship/
5 0
3 years ago
If a thousand dollars is put into a bank account each year the account earns 7% simple interest in 4 years how much interest wou
ser-zykov [4K]

Answer:

$280

Step-by-step explanation:

According to the problem, calculation of the given data are as follows:

Principal amount (P) = $1,000

Rate of interest (r) = 7%

Time period (t) = 4 years

Here we use simple interest formula to calculate interest after 4 years.

I = P × r × t

By putting the value, we get

I = $1,000 × 7% × 4

= $70 × 4

= $280

8 0
3 years ago
Given the conversion factor 12 inches/ 1 foot, what is the line segment's length in feet?
serg [7]
103.2/12 is 8.6
A. 8.6 Feet
7 0
2 years ago
Read 2 more answers
The speed of water in a whirlpool varies inversely with the radius. If water speed is 2.5 feet per second at a radius of 30 feet
Nata [24]
The speed of the water in the 3 feet radius is 25 feet per second.
4 0
3 years ago
Read 2 more answers
The volume of a cylinder is given by the formula v= m'h. where r is the radius of the cylinder and h is the height.
Verdich [7]

Answer:

The Volume of cylinder is: \mathbf{Volume=2\pi x^3-5\pi x^2-24\pi x+63\pi }

Option B is correct option.

Step-by-step explanation:

We are given:

Volume of cylinder = h = 2x+7

Radius of cylinder = r = x-3

We need to find volume of cylinder

The formula used is: Volume=\pi r^2h

Putting values and finding volume

Volume=\pi r^2h\\Volume=\pi (x-3)^2(2x+7)\\Volume=\pi (x^2-6x+9)(2x+7)\\Volume=\pi (2x(x^2-6x+9)+7(x^2-6x+9))\\Volume=\pi (2x^3-12x^2+18x+7x^2-42x+63)\\Volume=\pi (2x^3-12x^2+7x^2-42x+18x+63)\\Volume=\pi (2x^3-5x^2-24x+63)\\Volume=2\pi x^3-5\pi x^2-24\pi x+63\pi \\

So, The Volume of cylinder is: \mathbf{Volume=2\pi x^3-5\pi x^2-24\pi x+63\pi }

Option B is correct option.

8 0
3 years ago
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