Rectangle- A=bh triangle- A=0.5bh trapezoid- A= ( base 1 + base 2) h divided by 2
If n is odd then its cube is also odd because odd times odd is odd. When we add 5, an odd number, we get an even number.
If n is even, its cube is also even so adding an odd number makes the sum odd. So if the expression is odd, n must be even.
Answer:
The answer is
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Step-by-step explanation:
The distance between two points can be found by using the formula

where
(x1 , y1) and (x2 , y2) are the points
From the question the points are
B ( 3 , 1 ) and C( 6 , 3)
The distance between them is

We have the final answer as

Hope this helps you
He gave away 9 (20 x (3/7) =9) so 21-9=12