You earned a 90% on my science test you answer 18 questions correctly how many questions were on the test
2 answers:
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Answer: a)
Step-by-step explanation:
Given : For safety reasons, four different alarm systems were installed in the vault containing the safety deposit boxes at a Beverly Hills bank.
Each of the four systems detects theft with a probability of .99 independently of the others .
Probability for independent events occurs together =
.
Then, the probability that when a theft occurs, all four systems will detect it
= (0.99) x (0.99) x (0.99) x (0.99)
Hence, the probability that when a theft occurs, all four systems will detect it is .
Hence, the correct answer is a) .
Answer:
y+9=-1(x-4)
Step-by-step explanation:
Point Slope Form is:
When:
'm' is the slope.
is the coordinate.
We are given the slope of -1 and the coordinate of (4,-9).
So:
Using the information and replacing the values we get:
So, the line equation in point slope form should be: y+9=-1(x-4)
<em>Brainilest Appreciated. </em>