Area of circle = pi r^, (r)radius is half the diameter so 9÷2=4.5 so in this scenario it would be 3.14×4.5^
3.14×4.5×4.5=63.6
circumference of circle= diameter×pi (3.14)
so 9×3.14=28.3
Answer:
letter b
Step-by-step explanation:
<h2>
Explanation:</h2>
Hello! Remember you have to write complete questions in order to find good and exact answers. Here I'll assume that you need a relationship between D and N. So we know some facts:
- As N increases, then D decreases
So this is an inverse relationship. We can write this as:

Since N lies in the denominator, as it increases then D will decrease. So this is a correct relationship
Answer:
x = -2
Step-by-step explanation:
-20 = -4x - 6x + 2(10x)
Simplify both sides:
-20 = -4x - 6x + 20x
Combine like terms:
-20 = 10x
Isolate the variable:
x = -2