Answer:
There are four terms of the expression 
.
Step-by-step explanation:
The given expression is .
The first term of this expression is 
.
The second term of this expression is 
.
The third term of the expression is 
.
The fourth term of the expression is 
.
Therefore, there are four terms in the given expression.
Answer:
B
Step-by-step explanation:
yes, 12² + 13² = (
)²
144 + 169 = 313
313 = 313
Answer:
There's 2 solution, x= -1 and x= 2
Step-by-step explanation:
9514 1404 393
Answer:
mutually exclusive
Step-by-step explanation:
The formula of interest is ...
P(A or B) = P(A) + P(B) - P(A and B)
Filling in the given values, we have ...
9/10 = 2/5 + 1/2 - P(A and B)
Solving for P(A and B), we get ...
P(A and B) = 2/5 +1/2 -9/10 = 4/10 +5/10 -9/10
P(A and B) = 0
__
Events are mutually exclusive when <em>they can never happen at the same time</em>. That is, P(A and B) = 0.
The events A and B are mutually exclusive.
