There would be infinite solutions since these are the same equation just multiplies by negative 1
add them together and you get 0=0
10x +3y =1
-10x -3y=-1
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0=0
Answer:
I think it is 60% cause 15 ÷ 25= 0.6
Step-by-step explanation:
Answer:
3 packs of burgers and 4 packs of hot dogs
Step-by-step explanation:
if this is wrong im sorry what i did was divide 50 by 2 and got to the most i could
Answer:
Step-by-step explanation:
let X be the quantity of 100% acid
let Y be the quantity of 10% acid
X + Y = 90
Y = 90 - X
X(100) + Y(10) = 90(81)
X(100) + (90 - X)(10) = 90(81)
100X + 900 - 10X = 7290
90X = 6390
X = 71 L
Answer: Option 'B' is correct.
Step-by-step explanation:
Let the initial concentration be
Let concentration after t= 90 hours be N
Since we have given that Sodium-24 has a half life of 15 hours i.e.
So, According to question,
As we know that
Hence, Option 'B' is correct.
