Probability helps us to know the chances of an event occurring. The correct option is A.
<h3>What is Probability?</h3>
Probability helps us to know the chances of an event occurring.

Dependent events are those events in which the outcome of the first event affects the outcome of the second event. The statement that is correct about the dependent event is that the probability of all dependent events can be calculated using the "OR" formula P(A+B) =P(A) +P(B)-P(A and B).
Hence, the correct option is A.
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Answer:
9a-7
Step-by-step explanation:
8a-6+a-1
Collect like terms
8a+a-6-1
= 9a-7
Answer:
I looked it up and it says in a hierarchy based on similarities and physical traits as well as binomial nomenclature but you don't have that answer and it also says it describes the linnean taxonomy
Step-by-step explanation: but I think it's animals and species
sorry but hope this helps
Answer:
9.2 seconds.
Step-by-step explanation:
We have been given an equation that represents dive of a bird as
, where x represents the time the dive lasted in seconds and y represents the height of the bird in meters.
We can see that our given equation is a parabola. The leading coefficient is positive, so our parabola will be an upward opening parabola.
Upon graphing our given equation, we will get our required graph as shown in the attachment.
As x represents the time the dive lasted in seconds and y represents the height of the bird in meters, so the bird will be at the surface when the graph will cross x-axis.
We can see that graph crosses x-axis at
.
Upon rounding to nearest tenth, we will get:
.
At
the bird dives in water and goes down the water surface and at
the bird comes to the surface, therefore, the bird will be at surface after 9.2 seconds.
Answer:
X = 41/7 or 5 6/7
Step-by-step explanation: