Answer:
300 students
Step-by-step explanation:
Since 4/5 of students do not wear glasses, 1/5 of students do.
There are 60 students who wear glasses, so let 'x' represent the number of students who wear glasses
(1/5)x = 60 is our equation. "One-fifth of the number of students who wear glasses is 60"
Now solve for x
(1/5)x = 60
x = 300 (multiply both sides by 5 to get rid of the fraction)
Function is given in the form: f ( 2 ) = 12. There is x = 2, which means the presence of bacteria after 2 hours.
Answer : C) The total number of the bacteria present in the sample after 2 hours is 12.
Answer:
28 non-blue marbles.
Step-by-step explanation:
Initial probability of choosing a blue marble = 4/12
Let the number of non-blue marbles to be added be x.
(cross multiply)
-4m +18-6=0
-4m+12=0
-4m=-12
m=3
so they manufacture electric ones.
