-6, because you can see a pattern in which the x coordinate of each pair is reversed to the opposite value, from positive to negative.
I hope you can understand my messy handwriting
<span>% increase = Increase ÷ Original Number × 100.</span>
The formula for finding the radius of a circle while only knowing the circumference is r=C ÷ 2π. Substituting the value 10 for C, and 3.14 for π, we get:
r=10 ÷ 3.14 · 2 Now we divide 10 by 6.28
r≈1.59
