Answer:
Usually by age 18 is when you’re body fully developed.
Explanation:
Based on the cladogram, the organisms that are most related are A and C since they had the most recent divergence.
<h3>What is a cladogram?</h3>
A cladogram is a diagram which is tree-like showing similarities and differences among organisms as a result of evolutionary changes that occur in the organisms.
In a cladogram, the most similar organisms have the most recent branching along the cladogram.
Based on the description of the cladogram, the most recent branching occurred between A and C.
Therefore, based on the cladogram, the organisms that are most related are A and C.
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The value of the unknown number is 10.5.
Let the unknown number = x
When 20 is subtracted from the number and the result is squared which is equal to the square of the unknown number minus 20:
(x - 20)² = x² - 20
<em>expand the equation;</em>
x² - 40x + 400 = x² - 20
<em>collect similar terms together;</em>
x² - x² - 40x = -20 - 400
-40x = -420

Thus, the value of the unknown number is 10.5.
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