Add. -6 + (-73) + 56 + (-33)
a.-168
b.-56
c. 10
d. -44

-56 or b.

Step-by-step explanation: -6+(-73)=-79 because the negative number means minus.

-79+(positive)56=-23 because a negative number plus a positive number is adding the positive number meaning you subtract but keep the negative sign

-23+(-33)=-56 because the negative number means minus

I don't know how to explain that is just kind of how it works.

But here's something for the future.

Positive+(Negative) is minus

Positive+Positive is plus (duh)

Negative plus negative is minus (or add but theres a negative sign)

Negative-negative=plus (idk why but its meth)

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