Answer:
a is proportional to b
a=kb
k is proportionality constant
k =a/b =3/12 =1/4
k=1/4 = a/b=a/18
1/4=a/18
a=18/4 =9/2 =4.5 answer
Answer: See explanation
Step-by-step explanation:
We are informed that Stephen rewrites 3r - 18 = 27 as 3(r - 6) = 3(9). This is quite thoughtful of Stephen and it's an easier way to solve the question.
In this case, 3 is a common factor to 3r, 18 and 27. Therefore, we will then have: 3(r - 6) = 3(9).
Since 3 is a common base to both, we are more concerned with the values inside the brackets. This will be:
r-6 = 9
r = 9 + 6
r = 15
Check: 3r - 18
3(15) - 18 = 45 - 18 = 27
Answer:
Therefore the required relationship is
Step-by-step explanation:
Given that, to begin a bacteria study a petri dish had 2200 bacteria cells every hours.
The growth of bacteria is in exponential.So we use the following formula
A= Total amount =y = the number of bacteria cell
P= initial value = 2000
r= rate of increase = 3.8%= 0.038
n = time = t
Putting the all values
Therefore the required relationship is
Forty-seven point three five eight.
I hope you like this answer, and have a good night and life! :D
