They are alike because you are just doubling the number by 2
We have ax - bx = 1;
Then (a - b)x = 1;
If a - b is not 0, then x = 1 / (a-b);
the hypotenuse may be found by using the Pythagoras theorem
160 is the number i believe, hope it helps
Answer:
The price of ribbon is $0.63 per meter.
Step-by-step explanation:
It is given that:
Cost of 3 meter ribbon = $1.89
Unit price per meter = 
Unit price per meter = $0.63 per meter
Therefore,
The price of ribbon is $0.63 per meter.