What is the connection between east africa and islam? ?

Arandom variable x has a mean of 10 and a standard deviation of 3. if each value of x is multiplied by 2, what will the new mean and standard deviation be?

Meritocracy is the belief that hard work and achievement a: can reduce a persons position in society b: can change a persons position in society for the better c: has little influence on a persons social standing d: can decrease social inequality

You find a mysterious, dull substance on the ground and pick it up for a closer look. it is powdery, very light, and soft to the touch. the substance is most likely i. an organic mineral ii. a metallic mineral iii. a nonmetallic mineral i only ii only iii only i and ii i and iii