Answer:
A) X + Y = 12
B) 10Y + x = 10x + Y -18
B) 9Y = 9x -18 multiplying A) by -9
A) -9Y = 9x - 72 adding A and B we get
0 = 18x -90
x = 5
The number is 75
Double-Check
7 + 5 = 12
75 -57 = 18
Step-by-step explanation:
1/8 is rational because irrational numbers can be written as decimals but not fractions
Answer:
eu nao sei, mas preciso de pontos kkdescukpe okay
You are being asked to make π the subject in

So divide both sides of the equation by

That is

The you have

or

I hope this is helpful?