42 is 21% of 200. This is because 200*0.21 = 42.
Answer:
The perimeter is 24 in2
Step-by-step explanation:
You have to add up all of the sides together
Answer:25x=320=12.8
Step-by-step explanation:
a number=x
x*25=25x
25x=320
320/25=12.8
x=12.8
19-20 idk but ik the others
21.)0.785
22.)0
23.)-14.5
24.)7.838
The length of the AC is x^2 + 4x - 12.
<h3>What is a parallelogram?</h3>
That quadrilateral in which opposite sides are parallel is called a parallelogram.
Thus, a parallelogram is always a quadrilateral but a quadrilateral can or cannot be a parallelogram.
Given :
In Parallelogram ABCD, diagonals AC and BD intersect at point E.
such that
AE = x^2 - 12,
CE = 4x
We know that the diagonal of a parallelogram bisect each other.
x^2 - 12 = 4x
x^2 - 4x - 12= 0
(x-6)(x-2) = 0
Hence, the value of x = 6, 2.
AC = AE + CE = x^2 + 4x - 12.
The length of the AC is x^2 + 4x - 12.
Learn more about Parallelogram ;
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