Substitution is a method of finding x or y value by taking,
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1st full equation in name of x and substituting to get the value.
Hope helped
Answer:
75/5=x
Step-by-step explanation:
take the total sales divided by the unit price to give you the number of units
Given :
Nathan smiled at 50 people one day and recorded that 36 people smiled back at him.
To Find :
How many people should Nathan expect to return a smile if he smiles at 650 people over a period of time.
Solution :
Ratio of people smiled by total number of people is :

Now, it is given that we have to use the given conditions.
Therefore, ratio will be same :

Therefore, number of smiles Nathan expect to return is 468.
Answer:
17
Step-by-step explanation:
4w = w + 51
3w = 51
w = 51 : 3
w = 17