#21
To find the area of rectangle, you multiple length by width, so that would be

Since we are talking about area \ length, x need to be positive so we don't need to worry about absolute value now.
#22
The area of triangle is

, so that would be

Hope this helps.
The question above may be solved using the overall mass and component balances. If we let x be the number of liters of peroxide that should be added, the final mixture will have a quantity of x+12 L. The peroxide balance before and after mixing is,
x(1) + 12(0.08) = (x + 12)(0.16)
The value of x is 1.143. Thus, approximately 1.143 L of peroxide should be added to the original solution.
Answer
SpongeBob:$64000
Patrick:$40000
Mr.Krabs:$136000
Step-by-step explanation:
8+5+17=30
Spongebob=(8/30)*$240000=$64000
Patrick=(5/30)*$240000=$40000
Mr.Krabs=(17/30)*$240000=$136000
Answer:
144
Step-by-step explanation: