Answer:
153*10^3
Step-by-step explanation:
I assumed the first exponential number as 1
Heath needs to end up with 10L of solution,
of which 9L is bleach. So let m = liters of 20%
solution needed. Then .20m liters of that are bleach.
He must then add p liters of bleach to make
a total of 10 L. That is, p + m = 10. So the system is
m + p = 10, .20m + p = 9. Solving,
<span>m = 1.25 L 20% solution, and thus p = 8.75 L bleach.</span>
Answer:
A≈527.79
Step-by-step explanation:
A=2πrh+2πr2=2·π·7·5+2·π·72≈527.78757
Answer:
50 pounds for $14.29 is the better option.
Step-by-step explanation:
$5.79÷20=$0.2895 per pound
$14.29÷50=$0.2858 per pound
$0.2895-$0.2858=$0.0037 saved per pound.
