So firstly, remember that <u>subtracting a negative number is the same as adding a positive number</u> so our expression will look like this:
Now solve as such:
<u>Your answer is -4, or A.</u>
Problem 3
Disjoint events are two (or more) events that cannot happen at the same time. An example would be flipping heads and tails at the same time with the same coin. Another example is selecting an ace of spades and selecting an ace of diamonds, when you only select one card.
In general notation, P(A and B) = 0 if and only if A and B are disjoint.
P(A or B) = P(A) + P(B) - P(A and B)
P(A or B) = 0.3 + 0.1 - 0
<h3>P(A or B) = 0.4</h3>
=========================================
Problem 5
Same idea, but different numbers
P(A or B) = P(A) + P(B) - P(A and B)
P(A or B) = 1/3 + 1/4 - 0
P(A or B) = 4/12 + 3/12 - 0
<h3>P(A or B) = 7/12</h3>
Factor the polynomial.
x
(
65
x
−
144
)
x
(
65
x
-
144
)
Answer:
25
Step-by-step explanation:
one part of 4 parts = 1/4
100 divided by 4 = 25
