Explain why the triangles are similar and find the value of x

SAS both of triangle have the equality of SAS than it's a special right triangle if we want to find x we should multiple 2 by 40.8 the answer is 81.6

answer: expected value of x = 1.0

step-by-step explanation:

p(x=0) = 0.25

p(x=1) = 0.50

p(x=2) = 0.25

expected value for x = 0×0.25 + 1×0.5 + 2×0.25 = 1.0

idk

step-by-step explanation:

use that smart brain