Answer:
second one
Step-by-step explanation:
it is the second one , it has three expression starts with 5
when n=0 :2n+5=2(0)+5=5
n=1 : 2n+5=7
n=2: 2n+5=4+5=9
n=3: 2n+5=11
Quantity of water used to make a medicine :-
This quantity of water required to make a medicine = 1000 ml
Quantity of sucrose used to make a medicine = 150 ml
Quanity of saline solution used to make a medicine = 600 ml
The quantity of water to sucrose to saline solution needed to make a medicine as a ratio :-
Cutting each common zero in this ratio, we get :-
Dividing each number in the ratio by 5, we get the ratio :-
Since, the three numbers in this ratio doesn't have any common factors we can conclude that we have found out the simplest form of the ingredients needed to make the medicine .
Therefore, the ratio of water to sucrose to saline solution needed to make a medicine = 20:3:12
So find the common denominator of all:30
12/30, 9/30 and 8/30 then add them 29/30
Answer:
I think is 18
Step-by-step explanation:
because is the same of the L