Answer:
x = 
Explanation:
The sum of the interior angles of a quadrilateral is 
, so that from the given question:
<A + <B + <C + <D =
(2x + 35) + (3x - 5) + (x + 10) + (4x + 20) =
10x + 60 =
10x = - 60
= 300
x = 
= 30
x =
So that,
<A = (2x + 35) = (2*30 + 35) = 
<B = (3x - 5) = (3*30 - 5) = 
<C = (x + 10) = (30 + 10) = 
<D = (4x + 20) = (4*30 + 20) = 
Thus,
+ + + =
Her skin is working to protect her because of her sweat glands, which are producing sweat as a mechanism to cool your body during the intense heat. Also, there are melanocytes in your skin which produce melanin, which give your skin its pigmentation, and this also helps protect from the sun. In addition, if you apply sunscreen with a SPF higher than 15, that is pretty healthy protection from the sun as well, even though it isn't a natural defense.
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Dopamine which is responsible for transmitting signals between the nerve cells (neurons) of the brain.
