Answer:
Step-by-step explanation:
A door alarm works in 72 out of 100 cases.
surveillance camera works in 68 out of 100 cases.
The probability that method A is used = 72/100
The probability that method B is used = 68/100
Since both method are used we find the probability of A and B
Probability ( A and B) =
* 
=
Answer:
pi is 3.14
Step-by-step explanation:
Answer:
no
Step-by-step explanation:
The value of a would be 3.5, as a=1 when b=10 means that a is worth 1/10 of b's value.