Answer:
the third one
Step-by-step explanation:
because if we calcul Δ
we get a negative number
Answer: it’s B, 5 radical 6
Step-by-step explanation:
Answer:
N=61, n=30
Step-by-step explanation:
N=2n+1
N+n=91
2n+1+n=91
3n+1=91
3n=90
n=30
91-30=61
N=61
Answer:
Step-by-step explanation:
The water has to be 100% - 60% = 40%
100% represents both water alcohol (I think that's what you meant).
40% of 250 = 40/100 * 250 = 10000/100 = 100 mL
So 100 mL = water
150 mL = alcohol.
Answer:
huh? what am I supposed to do ??