Answer:x=3
Step-by-step explanation:
-5x=-15
divide by -5
x=3
Answer:
less than half
Step-by-step explanation:
13/12 - 7/10 = 23/60
3 gallons of acid = 100% concentration acid
? (water+acid) gallons = 15 concentration acid
Note: Every gallon of water added reduces the percentage concentration of acid. Therefore, the relationship is inverse proportionality.
Solution:
Total number of gallons (water+acid) = (3*100)/15 = 20 gallons
Therefore, gallons of water = 20-3 = 17 gallons
Answer:
first one is not. parallel second one is not and the third one is
