Keywords:
<em>Function, variable, total cost, percentage, jeans
</em>
For this case we have a function of the form
, where 
represents the total cost of buying a pair of jeans, considering that they are 20% below the regular price given by the variable x.
So, if the pair of jeans costs x, we look for 20% of x.
x -----------> 100%
? -----------> 20%
Where "?" represents 20% of x. So, we have:
Thus, 0.2x represents the reduction of the total cost of the pair of jeans
Then, the function that gives the total cost of the pair of jeans, with a reduction of 20% is:
Answer:
Option C
Answer:
3/5
Step-by-step explanation:
This is because 1/5 + 2/5 equals a totals of 3/5 eaten.
This can be calculated easily.
As any two digit number can be written in the following form:
N= 10x +y
If we reverse the number now, it would become:
N' = 10y + x
So if we subtract one from the other, we should obtain 18 ( as mentioned in the question ).
N-N'= 18
=> x-y = 2
Thus, any number whose digits differ by two would be an aswer to the question.
The only numbers which satisfy this are : 13,24,35,46,57,68,79
But this would not be true for any 3 or more digit number.
Answer:
s = 5
Step-by-step explanation:
-40 = 10 - 10s
-10 -10
-50 = -10s
/-10 /-10
s = 5
