a semi-regular tessellation may have:
a: only one type of shape
b: gaps between shapes
c: three types of shapes
d: overlapping shapes
can only pick one of the answers

so, converting firstly the mixed fractions to improper fractions and then "adding".

a28=58

step-by-step explanation:

a1=a1+(n-1)d

a28= 4+ (28-1)2

a28=4+(27)(2)

a28=4+54

a28=58

answer: translate the circles so they share a common center point and dilate circle y by a scale factor of 3.