Answer?? what’s is the value of a

13

Step-by-step explanation:

since the inside of a triangle is equal to 180

180-42-73=65

65/5=13 so 13 should be the answer.

Sum of the interior angles of a triangle= 180°

Therefore, 42°+ 73°+5a= 180°

=> 115°+5a = 180°

=> 5a= 180- 115°

=> 5a = 65°

=> a = 65°/5

=> a= 13°

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