Answer:
<em>n = - 2 </em>
Step-by-step explanation:
( a ± b )² = a² ± 2ab + b²
~~~~~~~~~~~
n² + 4n + 4 = ( n + 2 )² = 0 ⇒ <em>n = - 2</em>
He missed all the other words ( if I’m wrong I’m sorry that’s what the research told me )
Answer:
1/2
Step-by-step explanation:
Answer:
60
Step-by-step explanation:
Because the diameter of this circle is 20 and the formula for the circumference (perimeter) of a circle is pi * the diameter, or πd, which, if π is 3, can be computed as 60.
A takeaway from this problem is that you should memorize basic equations like the circumference/area of a circle.
