The addition rule for probability P(A or B)=P(A)+P(B)-P(A and B) is used for: 1) finding the probability that A and B both happen
2)finding the probability that A doesn't happen, but B does happen.
3)finding the probability that A or B or both happen.
4)finding the probability that A happens, then B happens.​

there are many solutions.

step-by-step explanation:

step 1: simplify both sides of the equation.

4x+6=4x^2+10x−4

step 2: subtract 4x^2+10x-4 from both sides.

4x+6−(4x^2+10x−4)=4x^2+10x−4−(4x^2+10x−4)

−4x^2−6x+10=0

step 3: factor left side of equation.

−2(2x+5)(x−1)=0

step 4: set factors equal to 0.

x=-5/2 or x=1

step-by-step explanation:

the true statements are:

r = set of real numbers

n = set of natural numbers, 1,2,

w = n u{0} = {0,1,}