Answer:
It is, however, an important primary step in the water treatment process, because coagulation removes many of the particles, such as dissolved organic carbon, that make water difficult to disinfect. Because coagulation removes some of the dissolved substances, less chlorine must be added to disinfect the water.
Explanation:
Answer:
After 14 swings, total length = 57.35 feet.
When the child stops swinging, Total length = 60 feet.
Explanation:
The total length of the rope after 14 swings form a geometric progression which is also known as exponential sequence.
The sum of the term in a Geometry progression is
Sₙ = a(1-rⁿ)/1-r.................(1)
Where Sₙ = sum of the nth term, a= first term, n= number of term, r= common ratio.
n=14, a= 12 feet, r=80% = 0.8.
Substituting the values above into equation(1)
S₁₄ = 12(1-0.8¹⁴)/1-0.8
S₁₄= 12(1-0.04398)/1-0.8
S₁₄= 12(0.95602)/0.2
S₁₄ = 11.47/0.2
S₁₄= 57.35 feet
∴ After 14 swings, the total length the rope will swing is = 57.35 feet.
The total length of the rope when the child stop swinging = sum to infinity of the Geometry progression( exponential sequence).
The sum to infinity of an exponential sequence
S = a/1-r
Where a= first term= 12 feet, r= common ratio = 0.8.
∴ S= 12/1-0.8
S= 12/0.2
S = 60 feet
When the boy stops swinging, the total length the rope have swung = 60 feet.
Answer:
3.2 hours
Explanation:
96÷30=3.2
so it should take 3.2 hours
b. upright and larger than the object.
c. inverted and smaller than the object.
d. upright and smaller than the object.
Penn Foster STudents: d. upright and smaller than the object.