(1mile/57.1 sec) x (3,600 sec/hour) = 1 x 3600/57.1 = 63.05 mile/hour<span> (rounded)</span>
Answer:
11/10
Step-by-step explanation:
g00gle
Answer:
6
-16
-5
0
Step-by-step explanation:
We have 20% and 70% salt solutions.
We need 9 liters of 50% salt solution.
"t" is liters of twenty % solution "s" is liters of seventy % solution
A) t + s = 9
B) .2t + .7s = (.5 * 9)
Multiplying A) by -.2
A) -.2t + -.2s = -1.8 Adding that to B)
B) .2t + .7s = (.5 * 9)
.5s = 2.7
s = 5.4 liters of 70% salt
A) t + 5.4 = 9
t = 3.6 liters of 20% salt
Source:
http://www.1728.org/mixture.htm
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