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
Answer:
Yes, it does.
Explanation:
All of the continents that are seperate today were in the form of a single giant continent up until approximately 175 million years ago.
They drifted apart in time because of the molten lava that is constantly flowing right underneath the earth's hardened shell. Also, archeological discoveries that indicate the same species of animals/plants lived on different continents such as Europe and America long before humans or intercontinental travel were around.
I hope this answer helps.
I don’t know if anyone will know the answer to this one
Answer:
Eolian sedimentary environment
Explanation:
Winds can transport many different-sized particles of material from the ground through the process of erosion. These particles might travel many kilometers until they deposit somewhere. Regions with scarce vegetation have too much dust and grain-sized particles that move and crush each other, increasing erosion. This process is known as eolic erosion.
The most prominent accumulations of wind deposits are the dunes. However, there are other smaller accumulations such as the ripples and other larger ones called Draas. Their main differences are in addition to size, is the wavelength between them.
Dunes are winds deposits, formations that are, in general, typical of deserts. Dunes are orientated according to the direction and speed of winds, to the presence of loose material, and vegetation. Strong winds transport material until it collides with an object or obstacle where it is deposited, originating a new dune.
Dunes are very dynamic formations that are constantly being remodeled by the direction and strength of the winds. Dunes always have a soft slope and a sharp one. The soft slope is directed to the area or region where the wind is coming from and is the product of the wind erosion on the same dune. The opposite sharp slope is protected from the wind and is the deposition place, where the wind losses strength and the carrying material falls, depositing in this side of the dune.
Sinkiang is a desert in China. Placing yourself at 39 05 52.46N 84 30 56.16E lets you appreciate the duned shape of the ground. By zooming in and out, you can notice the soft and sharp slopes that are forming each of the dunes and the distance between them.
Answer:
b. detoxification by phytoremediation
Explanation:
- After the hurricane impact, the landscape was badly torn wat, and this leads to the contamination of soil and lands. Hence in order to detox the wastes generated in the soil.
- The sunflower plantations are done as they are useful for phytoremediation as these plants are able to grow in the contaminated soils and can be used to pull out any form of contamination or impurities from the soil.
