Pleas help me I need a tree diagram for these questions but I don’t understand how to do that A national survey found that 48% of all teenagers have an iPhone. You decide to survey 3 teenagers in your
school at random. Draw a tree diagram to illustrate the possible outcomes.

P(all 3 own an iPhone) =

P(none own an iPhone) =

P( aleast one owns an iPhone) =

28794356573426856328957643287564873564785634987678257236598723465726358745634875634875634987564398275648973

Step-by-step explanation:

ki have branley plz

256π units²   (answer b)

step-by-step explanation:

the formula for the surface area of a sphere of radius r

is             a = 4πr²

and so, if r = 8 units, then the surface area is:

a = 4π(8 units)² = 256π units²   (answer b)