Answer:
7
Step-by-step explanation:
Factor the number: 49 = 
Apply radical rule:
, 

Answer:
there's only one equation listed, and it has one solution, which is 0
Step-by-step explanation:
Area = PI * radius^2
Circumference = 2 * PI * radius
radius = Circumference / 2 * PI
So, Area = PI * (Circumference / 2 *PI) * (Circumference / 2 *PI)
So, Area = Circumference^2 / (4*PI)
<h2>
Answer:</h2>
The answer is:
1919=2
<h2>
Step-by-step explanation:</h2>
Let us assume the numbers as follows:
9=1
8=2
1=0
6=4
2=0
Hence, when we substitute the assumed values in each of the given numbers we obtain the result for each as follows:
1)
9999=1+1+1+1
9999=4
2)
8888=2+2+2+2
8888=8
3)
1816=0+2+0+4
1816=6
4)
1212=0+0+0+0
i.e.
1212=0
5)
1919=0+1+0+1
i.e.
1919=2