If f(x) = 8, what is f(x) when x = 10?
2 answers:
Answer:
The value of function f(x) at x=10 is 8.
Step-by-step explanation:
The given function is
It is a constant function or it is free from the variable.
The value of these functions always remains the same. It means for any value of x the value of the function is 8.
Put x=10 in the given function.
Therefore the value of function f(x) at x=10 is 8.
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Answer:
<em>Cathy was born in 1980 and she was 18 years old in 1998</em>
Step-by-step explanation:
<u>Equations</u>
This is a special type of equations where all the unknowns must be integers and limited to a range [0,9] because they are the digits of a number.
Let's say Cathy was born in the year x formed by the ordered digits abcd. A number expressed by its digits can be calculated as
In 1998, Cathy's age was
And it must be equal to the sum of the four digits
Rearranging
We are sure a=1, b=9 because Cathy's age is limited to having been born in the same century and millennium. Thus
Operating
If now we try some values for c we notice there is only one possible valid combination, since c and d must be integers in the range [0,9]
c=8, d=0
Thus, Cathy was born in 1980 and she was 18 years old in 1998. Note that 1+9+8+0=18