Mohamed and Li Jing were asked to find an explicit formula for the sequence -5\,,-25\,,-125\,,-625,...−5,−25,−125,−625,...Minus,
ANTONII [103]
Answer:
the equation is given as 
Explanation:
As the sequence is given as −5,−25,−125,−625,...
From this the first term is given as
a1=-5
Now the relation between this term and the next term is to be observed.
d=a2-a1=-25-(-5)=-25+5=-20
d=a3-a2=-125-(-25)=-125+25=-100
Now it is observed that the difference is not same this indicates that the relation is not arithmetic.
next up is the geometric sequence so the value of ratio is given as
r=a2/a1=-25/-5=5
r=a3/a2=-125/-25=5
As the ratio is same this indicates, this is a geometric sequence.
Now for the geometric sequence, the value of the general term is given as
Here a1=-5 and r=5 so the equation is given as
I think the one that caused by pressure from a large-scale geological event is : A. Regional
Regional metamorphism covers a large area of continental crust including several mountain ranges and tectonic plates
hope this helps
Answer:
D. It completely removes any available topsoil.
Explanation:
Open pit mining strips off the top layer of the soil in order to access near surface mineral deposits. Most near surface deposits are usually rock aggregates, coal, copper etc.
In order, to access these minerals, large amount of earth must be removed by earth moving machines.
Open pit mining greatly unsettles the ecosystem in mining regions and it leaves the surface bare and not suitable for agricultural activities.
<span>Why do more hydrothermal resources exist in the western regions of the United States?<span>
</span>Answer: There are more hydrothermal resources in the Western regions of the United States because the there are temperatures hot enough to be useful as a geothermal resource located at depths too far below the surface. This is why this area became a prime target for the development of geothermal energy resources.
I hope it helps, Regards.</span>
What imaginary line cuts across the top of south america?
The Equator
