4. find the circumference of a circle with radius 20 ft., rounded to the nearest tenth

C= 125.6

Step-by-step explanation:

The formula to find the circumference is :

So the equation is:

Simplify:

Simplify:

And it asks to round to the nearest tenth, but it is already rounded to the nearest tenth.

Hope this helps : )

none of the above.

for one of the equations to be used in the process, there has to be a term in the equation since squared is .

since there is only a term in the first equation, we cannot derive a from completing the square.

solving with completing the square

answer:   b

step-by-step explanation:

x2 = 16

x can not be a negative number because 16 is positive

the only answer would be positive 8