which of the following triangles is not a right triangle?
a) 3 cm, 4 cm, 5 cm
b) 6 ft, 8 ft, 12 ft
c) 27 cm, 36 cm, 45 cm
d) none of the above

Option b.

Step-by-step explanation:

Let's check each triangle with the Pythagorean Theorem:

Where "a" is the hypotenuse (the longest side) and "b" and "c" are the legs of the right triangle.

a) Given:

You get:

(This is a right triangle)

b) Given:

You get:

(This is not a right triangle)

c) Given:

You get:

(This is a right 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

step-by-step explanation:

the multiplicative inverse of a fraction a/b is b/a. for the multiplicative inverse of a real number, divide 1 by the number. for example, the reciprocal of 5 is one fifth 1/5 or 0.2, and the reciprocal of 0.25 is 1 divided by 0.25, or 4.