19. No
20. No
21. Yes
23. 1.8 miles
Two buckets of seawater contain
kg of salt.
Step-by-step explanation:
Amount of salt in 1 kg water = 
It is given that;
1 liter = 
500 liters = 
500 liters = 548 kilogram
As,
1 kg of seawater =
of salt
548 kilograms = 
548 kilograms =
kilograms of salt
Two buckets of seawater contain
kg of salt.
Keywords: unit rate, multiplication
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#LearnwithBrainly
Answer:
I believe the answer is B
The area of the square is 4
and the area of the triangle is 2
4+2=6
the area is 6