Answer: It is asking the amount of pure water.
Amount of pure water evaporated is 64 gallons .
Step-by-step explanation:
Let x gallons be the amount of evaporated water.
Amount of water before evaporation
=12% of 160
= 0.12(160) = 19.2 gallons .......(1)
amount of solution after x gallon water evaporation = 160-x
amount of salt in 160-x solution = 20% of 160-x
=0.2 (160-x) ........... (2)
Since amount of salt will be same before and after evaporation
from (1 ) and (2)
0.2(160-x) = 19.2
32-0.2x = 19.2
-0.2x = 19.2-32
-0.2x = -12.8
x = -12.8/(-0.2)
x = 64 gallons
Since the total is 42 divide by two since they are the same length so it would be 21
Likely bc it is definitely not certain, nor impossible, but it is more likely then unlikely
Answer:
a equals 105°
Step-by-step explanation:
angles in a straight line add up to 180°
a+75=180
a=180-75
a=105°
