5x + 10y = 50
x + y = 8
x = 8 - y
5*(8-y) + 10y = 50
40 - 5y + 10y = 50
10y - 5y = 50 - 40
5y = 10
y = 2
x + y = 8
x + 2 = 8
x = 8 - 2
x = 6
She has 6 nickels and 2 dimes
Answer: I need this too.
Step-by-step explanation:
It completely depends on the situation.
From everything we're given in the question, we
don't know anything about the situation yet.
4, 4+4 is 8 which is double of 4