issagirl05
14.02.2020 •
Mathematics
According to the Environmental Protection Agency (EPA), in a typical wetland environment, 36% of the water is outflow; 47% is seepage; 8% evaporates; and 9% remains as water volume in the ecosystem (Reference: United States Environmental Protection Agency Case Studies Report 832-R-93-005). Chloride compounds as residuals from residential areas are a problem for wetlands.
Suppose that in a particular wetland environment the following concentrations (mg/l) of chloride compounds were found:
outflow, 53.6; seepage, 73.9; remaining due to evaporation, 57.0; in the water volume, 74.0.
(a) Compute the weighted average of chlorine compound concentration (mg/l) for this ecological system. (Round your answer to one decimal place.)
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Ответ:
A. 65.7 mg/l.
B. iv. No. The average chlorine compound concentration (mg/l) is too high.
Step-by-step explanation:
Given:
Outflow = 36%
= 36 l in 100 l of wetland
Seepage = 47%
= 47 l in 100 l of wetland
Evaporates = 8%
= 8 l in 100 l of wetland
Water volume = 9%
= 36 l in 100 l of wetland
Outflow = 53.6 mg/l
Seepage = 73.9mg/l
Remaining due to evaporation = 57.0mg/l
Water volume = 74.0 mg/l
Concentration of Chlorine compounds:
Outflow = 36/100 * 53.6
= 19.3 mg/l of outflow chlorine in the wetlands.
Seepage = 47/100 * 73.9
= 34.73 mg/l of seepage chlorine in the wetlands.
Evaporates = 8/100 * 57
= 4.56 mg/l of evaporates chlorine in the wetlands.
Water volume = 9/100 * 74
= 6.66 mg/l of outflow chlorine in the wetlands.
Weighted average concentration of chlorine compounds in 100 l of wetland = total(X*W)/totalW
Where,
Total w = 0.36 + 0.47 + 0.08 + 0.09
= 1
Total X*W = 19.3 + 34.73 + 4.56 + 6.66
= 65.65/1
= 65.7 mg/l.
Ответ:
Answer with Step-by-step explanation:
We are given that line t intersects the segment AB.
A point C lie on the line t.
We have to write a paragraph to prove that the point C is equidistant from the point A and B.
Perpendicular bisector theorem:If a point lie on the perpendicular bisector line segment then the point is equidistant from the endpoints of line segment.
We are given
(linear pair)
Substitute the value
By using perpendicular bisector theorem,
Point C is equidistant from the point A and B.
Hence, proved