How can you write the expression (28 +70) as a multiple of a sum of whole 1 point numbers with no common factor?
1 x (28 + 70)
2 x (14 + 35)
7x (4 + 10)
14 x (2 + 5)
28 x (1 +5)
PLS HELP WILL GIVE BRAINLIEST

The coverage of a base station of a telecommunication company forms a disk with a radius of (kilometers). let be the distance of a cellphone from a base station. assume that the location of cellphones in use are randomly uniformly distributed within the disk. calculate the mean and variance for the random variable.