What is the distance between U(-1,9) and V(4,7)leave answer in radical form

Acircle has a circumference of 28.36 units what is the diameter of the circle

What is the explicit formula for this sequence? -7, -4, -1, 2, a.) an = 8 + (b - 1)3 b.) an = -7 + (n - 1)3 c.) an = 3 + (n -1) (-7) d.) an = -7 + (n - )

12 out of 30 people chose their favourite colour as blue caculate the angle you would use for blue on a pie chart