Whats the value of x?

a. x=2
b. x=3
c. x=4
d. x=6

The ratio of the measures of the three angles in a triangle is 2: 9: 4. find the measures of the angels

5cakes cost 3.50 how much do 7 cakes cost

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.