What of the following is an arithmetic sequence?
a. 800, 20p, 50,
b. 1, 3, 9, 27,
c. 1, 0, 1, 0, 1, 0,
d. 10, 7, 4, 1, -2,

Alength on a map is 7.5 inches. thescale is 1 inch: 5 miles. what is theactual distance? a 1.5 miles c 12.5 milesb 2.5 miles d 37.5 miles

Geometry - finding area of regular polygons and sectors (check my math, i can’t find the error)

What number produces an irrational number when multiplied by 1/4