Answer:
Step-by-step explanation:
Given that,
Cells are divided into two cell every 20mins, this implies that the half-life is 20mins
Initial population growth is 60cells
Growth rate r?
Population growth is modeled as
P(t) = Po•exp(rt)
Where,
Po is the initial growth at t= 0
Po= 60
P(t) is population at any time t.
Since the population doubles every 20mins(⅓hr)
Then, P(⅓) = 2×60 =120
Then, P(t) = 120cells
So, applying the formula
P(t) = Po•exp(rt)
120 = 60•exp(⅓r)
120/60 = exp(r/3)
2 = exp(r/3)
Take In of both sides
In(2) = r/3
Cross multiply
r = 3In(2)
r = 2.079 /hour
The growth rate is 2.079/hour.
Answer:
185 shrubs
Step-by-step explanation:
ratio plant : 1% = 5 : 1%
if the percent of shrubs in the garden is 37%, according to my ratio. every 1% is 5 plants, therefore, 37% = 37 x 5 = 185
Answer:
it is a 30 degree angle
Step-by-step explanation:
I think that the length's area is 6075
Answer:
1) C = 3
2) B = 5
3) C = 8
Step-by-step explanation:
Question 1)
We have:

Distribute:

Distribute:

Combine like terms:

Therefore, C = 3.
Question 2)
We have:

Distribute:

Distribute:

Combine like terms:

Therefore, B = 5.
Question 3)
We have:

Distribute:

Distribute:

Combine like terms:

So, C = 8.