Question

help me with this math​

Answer 1

Answer:

Step-by-step explanation:

I) Generally this question has to do with the number of solutions you get from an equation like this. Of course we need at least to suppose that we can at least divide with them, so some of them is not 0. If  a/d=b/e=c/f , then you get infinitely many solutions, basically for any x you will have a y as a solution. Geometrically speaking this means the two equations describe the exact same line.

Now if they describe different lines: there is only one solution or no solution, i.e. the two lines intersect in one point or if they are parallel, then there is not infinitely many solutions, so the stated relation between the parameters can not be true either.

II) 9^n cannot end with the digit 0 for any natural number n ...

This is because if any digit ends with zero it should contain 2 and 5 has its factors.

But 9^n has 3^n and 3^n has factors...

Therefore by the fundamental theorem of arithmetic 9 n cannot end with zero..

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