Answer:
the first floor i think
Step-by-step explanation:
minus 18-16= on a Calculator and there's your answer.
We have 10 ml of 20% acid to which we need to add "x" milliliters of 100% acid to make 50% acid.
.20 * 10 + 1.00x = .50 * (10 +x)
in which "x" is the volume of the 100% acid to be added.
2 + x = 5 + .5 x
.5x = 3
x = 6 milliliters
Source:
http://www.1728.org/mixture.htm
Scroll down to problem B
Answer:
Why is this long?
Step-by-step explanation:
X= 5.333333333 + .8333333333y
Total change in relation to when Greg first started decreasing his run time : -6 minutes (at the end of 6 weeks)
Expression : -x (x is the number of weeks)
