9514 1404 393
Answer:
21 3/7 mL ≈ 21.43 mL
Step-by-step explanation:
Let x represent the amount of 6% solution that should be added. The the total volume of sodium carbonate in the mix is ...
1%(50) +6%(x) = 2.5%(50 +x)
50 +6x = 125 +2.5x . . . . . multiply by 100, eliminate parentheses
3.5x = 75 . . . . . . . . . . . . . subtract 2.5x+50
x = 21 3/7 . . . . . . . . . . . . . divide by 3.5
21 3/7 mL, about 21.43 mL, of 6% solution should be added to make a 2.5% solution.
Answer: 1 <= 9
Step-by-step explanation:
Do math
Answer: the chairs alone would cost $358.36, and since you would already know how much the table costs you would just add it together to get $958.35
Step-by-step explanation:
Answer:
z = -4/5
Step-by-step explanation:
5z + 7 = 3
5z = -7 + 3
5z = -4
z = -4/5
Hope this helps :)
Let me know if there are any mistakes!!
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