Answer:
The events are not mutually exclusive because the P(A and B)=0.1 not 0
Step-by-step explanation:
Mutual exclusive events are those that can't happen at the same time.For example Tossing a coin, Head and Tail are mutually exclusive events because you can't get a Head and a tail at the same time.Another example is turning left and turning right are mutually exclusive because you can't do both at the same time.
If events are mutually exclusive, they can happen at the same time.
Mathematically,the probability of mutual exclusive events follows;
P(A and B)=0 ------------The probability of A and B together equals 0
P(A or B) = P(A)+P(B)-----The probability of A or B equals the probability of A plus the probability of B.
In this question you are given;
P(A)=0.3
P(B)=0.6
P(A or B) =P(A) + P(B)= 0.3+0.6 =0.9
0.9≠0.8 thus the events are not mutually exclusive.
Answer:
7 pizzas
Step-by-step explanation:
Say: c= cost of pizza, d= delivery fee, p= # of pizzas (final equation)
System: 2c+d=25, 5c+d=58
2c+d=25
<u>-5c-d=-58</u>
-3c=-33
c=11
2(11)+d=25
d=3
p(11)+3=80
p(11)=77
p=7
Based on the given information above, Thelma had a balance of $1,209.76 and withdrew $131.44, so the remaining would be $1,708.32. But the teller credited her account with $6.67. Credited this means that the money is into your account. So, her new balance would be therefore, $1,084.99. Hope this answers your question.
If your struggling with this is how you do it a quotient is the answer to a division problem. The divisor is the number of parts you divide the dividend by. The dividend is the number you are dividing.
Example: 12 ÷ 3 = 4, 4 is the quotient
Hope it helps!!!
