How many different triangles can be drawn with angle measures 90°, 45°, and 45°?

no triangles

exactly one triangle

exactly two triangles

any number of triangles

Exactly one triangle.

Step-by-step explanation:

The 3 angles add up to 180 degrees . There is only one way to draw this triangle.

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