Answer:
rearrange them properly to get
x-y=7
-3x+y=12
( by elimination method)
x-y = 7
-3x+y=
(x+ –3x) + (–y+y) = (7+12)
-2x+0= 19
x= -9.5
from eqn(i)
x-y=7
-9.5 - y=7
-y=16.5
y= -16.5
Solving the equation 
we get value of p = -4
Step-by-step explanation:
We need to find the value of p in the equation
Solving to find value of p:
So, solving the equation we get value of p = -4
Keywords: Solving Equations
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Answer:
4:6 or 2:3
Step-by-step explanation:
Since the ratio of mass of oxygen to carbon is 4:3, when there are two carbons the ratio will be 4:3*2=4:6=2:3. Hope this helps!
Answer:
Im not exactly sure but i think it's 1/4 or 1/5.
Step-by-step explanation:
This was based on my work I did.
