Answer:
2 1/2 hours
Step-by-step explanation:
Divide 100 by 40 and you get 2.5
Answer:
Step-by-step explanation:
I think the answer C x=42 y=30, correct me if i'm wrong
<span><span>The sum of a squared and b is given by
</span>7 times the sum of a squared and b is given by
</span><span>
while 4 times the sum of a squared and b is given by
</span>
Therefore, <span>7 times the sum of a squared and b minus 4 times the sum of a squared and b is given by
</span>
Mixing the two concentrations would give a new concentration which is in between 50 - 60% .
D. 63% cannot be obtained