Y X
80 32
100 x'
80x' = 100*32
80x' = 3200
x' = 3200/80
x' = 320/8
x' = 40
Answer:
We are given that the rate of change is proportional to its size S
So,
Integrating both sides
S is the population after t hours
is the initial population
Now we are given that After 6 hours there will be 1200 bacteria
So,
a)Now the population after t hours as a function of t;
b) What will be the population after 7 hours?
Substitute t = 7 hours
A bacteria culture starts with 200 bacteria
c) How long will it take for the population to reach 1750 ?
So, it will take 7.2 hours for the population to reach 1750
Answer:
1890 ml
Step-by-step explanation:
if you add it all together
X= 20 y= 100
I hope it helped. Give Brainly if it help
Answer:
30%
Step-by-step explanation:
Think of this as converting a fraction. 28/40 to x/100. You do this because in the situation, 40 is 100 percent of the price. So 28 is <em>x</em> percent of 100.
You multiply 40 by 2.5 to get to 100, so multiply 28 by the same number to get x. 28 * 2.5 = 70.
So 28 is 70 percent of 40. But the question is asking by what percentage it is <em>discounted. </em>If it's now selling for 70%, it has been discounted 30%. So the answer is 30%