Let's say x to the daughter's age, since the father's age is four times the daughter's age, his age will be 4x. 18 years later, the daughter's age will be x+18 and the father's will be 4x+18. And we know that 18 years later the father's age will be twice the daughter' so , 4x+18 = 2(x+18) and 4x+18=2x+36 then, 4x-2x=36-18,
2x=18 then divide both sides by 2, x = 9. The daughter's age was x, so she is 9 years old.
Answer: Simplify the real and imaginary parts of the expression.
Answer is: 8x^2 minus
He can conclude that the system of equations has no solution since one equation in it always results with false equivalency.
Hope this helps.
r3t40
It's not clear what you're supposed to do, but I would guess that you're asked to find a certain term in the sequence.
Given
you can do that by solving for
explicitly.
So the explicit formula for the
th term is