The fourth option is the correct answer.
Hope this helps! ;)
Answer:
x=2x, y=5y
Step-by-step explanation:
180-108=72+120=192,360-192=168
Answer:
b) (5, -3)
Step-by-step explanation:
The given equations are;
I prefer using substitution because of the first equation.
Put equation (1) into equation (2) to obtain;
We expand the parenthesis to obtain;
Group similar terms to get;
Simplify
Divide through by 5;
Put 
into equation (1) to get;
The solution is (5,-3).
The correct answer is B
Answer:
1:2
Step-by-step explanation:
First, find how many are green
Add up the number of blue and red ones:
10 + 15 = 25
Subtract this from 50
50 - 25 = 25
So, 25 are green.
Since there are 50 marbles in total, the ratio will be 25:50
This can be simplified, since both numbers are divisible by 25.
So, the ratio is 1:2
I believe it would be on (-5,2) please let me know if im correct
