Answer : The value of 
is 
.
Explanation :
As we are given 6 right angled triangle in the given figure.
First we have to calculate the value of 
.
Using Pythagoras theorem in triangle 1 :
Now we have to calculate the value of 
.
Using Pythagoras theorem in triangle 2 :
Now we have to calculate the value of 
.
Using Pythagoras theorem in triangle 3 :
Now we have to calculate the value of 
.
Using Pythagoras theorem in triangle 4 :
Now we have to calculate the value of 
.
Using Pythagoras theorem in triangle 5 :
Now we have to calculate the value of .
Using Pythagoras theorem in triangle 6 :
Therefore, the value of is .
The U.S. has more than 87,000 dams greater than six feet high (and two million overall). While many dams continue to provide benefits such as flood control, irrigation, and water supply, for other dams the cost of maintenance or the negative effects on communities, fish, and tribes justifies their removal.
Dam owners and regulators decide whether to remove a dam by weighing many factors including: the cost of removal and the ability to replace any lost power generation against avoided long-term maintenance; safety concerns; benefits to endangered fish populations; increased recreational and commercial fishing; and restoration of cultural values of nearby tribes.
By 2020, roughly 70% of dams will be more than 50 years old, inviting us to reconsider the value to the public of long-term investments in this infrastructure.
Answer:
b. stratigraphically alternating sequences of sandstones, conglomerates, and shales.
Explanation:
It is unlikely that one would find igneous rocks such as basalt and granite in fluvial environments. Coal is also not usually found in fluvial environments. Limestone prefers shallow and calm waters so would not be moved by water normally. This therefore invalidates options a, c, d, e and f.
For the hypothesis to be true, one would need to find conglomerates as these contain large clasts and are present in fluvial environments. Alternating sequences involving conglomerates and sandstones would indeed show that that some floods were able to carry large clasts.
Volcanoes are formed when magma from within the Earth's upper mantle works its way to the surface. At the surface, it erupts to form lava flows and ash deposits. Over time as the volcano continues to erupt, it will get bigger and bigger.
Answer:
Capital expenditures involve the acquisition of assets that are long lasting, such as C. land and buildings. D. equipment with an appropriate number of years of useful life
Explanation:
Capital Expenditures -
Commonly represented as CapEx , these are the fixed funds used by company for the purpose to upgrade , acquire and maintain physical assets such as the building , property , any technology etc.
capital expenditure is the expense made on fixed assets like land, buildings, equipment. Supplies and operating expenses are variable costs.
