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Lunna [17]
3 years ago
7

BIG POINTS please help me!

Biology
1 answer:
GREYUIT [131]3 years ago
6 0
I think 2
but not shure : I
hope this helps
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Which structure is ouside the nucleus of a cell and contains DNA?​
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The nucleus is an organelle found in eukaryotic cells.

Explanation:

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Double fertilization results in the formation of select one:
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Double fertilization results in the formation of  one diploid embryo and a triploid endosperm. Double fertilization is characterized by the formation of two embryos; the embryo proper which is diploid and the fusion product of the central cell with one male gamete which is triploid. This secondary triploid zygote develops into the endosperm. 
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The expression 40x2 – 65x + 50 represents the sum of the interior angles of a regular pentagon in degrees. If the interior angle
Nadya [2.5K]

Answer:

2(8x^2-13x+10)

Explanation:

There are 5 angle s in a pentagon and we are assuming are pentagon is a regular one so the angles are all congruent.

Let's let A represent the measurement of one of the those angles in our pentagon.

The sum of our angles in our pentagon would then be A+A+A+A+A or 5A.

But we are also given that this equals 40x^2-65x+50.

So that means 5A=40x^2-65x+50.

If we divide both sides by 5 we can find what one of our angles is in terms of x.  So let's do that A=8x^2-13x+10.

So we want to know the sum of two our angles, we want to know what is A+A or 2A.  2A=2(8x^2-13x+10).  To obtain that I just multiplied both sides of A=8x^2-13x+10 by 2.

6 0
3 years ago
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_____ helps prevent mutations from occurring over and over again.
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Answer:

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Generally the low pitched sound vibrates the basilar membrane close to its apex while high pitched sound vibrates the basilar membrane close to its base

Brain receives information at temporal lobe. Thus, high and low pitched sounds are received at the higher and lower part of the temporal lobe.

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