The inner ring of a hula hoop has a radius of 18 inches. which expression can be used to find its circumference, c, in inches?

a c = 18 × π

b c = (18)2 × π

c c = 2 × 18 × π

d c = 2 × (18)2 × π

What is the equation of the linear function represented by the table?

Alicense plate is to consist of 44 digits followed by 55 uppercase letters. determine the number of different license plates possible if the first and second digits must be? odd, and repetition is not permitted.

Plzzz plzz maths ! quadratic sequences =an^2+bn 1) 1,6,15,28,45 2)5,18,39,68,105 3) 1,8,21,40,65 4) 7,24,51,88,135 5) -1,2,9,20,35