Answer:
Step-by-step explanation:
1 +1 = 2 g a y n i g g a s
X5.4/100=3.8
x=3.8(100/5.4)
x=70.3%
Answer:
First of all, he have to find out what 0.5% of the students is.
Second of all, find out what 0.5 of 100 is. 100 divided by 0.5 is 200.
Third of all, divide 200 from 639. This equals 3.195
Since it is asking about how many, I would go with about 3. After all, you can't have have half of a person, so the decimals shouldn't be added.
Step-by-step explanation:
Answer:
Therefore the initial amount of animal was 89.
Step-by-step explanation:
Given that,at rate of 3.5% per year, the population of a certain animal species decreases.
The population growth formula:
A= number of population after n year.
P= initial population.
n= time in year
r= rate of growth per annum.
Here A=80, P=?, n= 3 years, r= -3.5% = -0.035[ since the rate of growth decrease]
Putting the all values,
≈89.
Therefore the amount of animal at its initial stage was 89.