X=12 do you need an explanation?
Answer:
I'm going to say C
it looks the most reasonable to me
Answer:
(x - 5i)(x + 5i)
Step-by-step explanation:
Write this as x^2 + 25. Solving for x^2, we get x^2 = -25.
Recall that the square root of a negative number is an imaginary one. √(-25) equals ±5i (there are two roots, one positive and one negative).
Then x = ±5i.
In factored form, the given expression is (x - 5i)(x + 5i).
Answer:
Option B is correct
circumference of a circle is 785 m
Step-by-step explanation:
Circumference of the circle(C) is given by:

where
r is the radius of the circle
As per the statement:
radius of the circle is 125 m
then substitute in [1] we have

Simplify:
C = 785 m
Therefore, the circumference of a circle is 785 m