A survey found that 25.3% of the residents in the neighborhood hire gardeners. Find the probability that someone in the neighbor
2 answers:
Answer: =74.7%
Step-by-step explanation:
Given: The percentage of residents in the neighborhood hire gardeners=25.3%
i.e. The probability of residents in the neighborhood hire gardeners=0.253
Let A denote the event of hiring gardeners.
Then
We know that for any event A , the probability of not occuring the event A will be given by :-
Hence, the probability that that someone in the neighborhood does not hire a gardener=74.7%
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Answer:
Step-by-step explanation:
To start calculating, we first need to make some proof.
Firstly, since AB = AC, we know that ΔABC is isosceles, which means that ∠ABC = ∠ACB.
Now, looking only to ΔBDE and ΔCDF, we can see that they are similar, because the two of its angles are congruent:
∠BED=∠CFD
∠DBE=∠DCF
To make it easier to visualize which are the corresponding vertexes, we can draw them like this:
And we need to remember that BC is 24, so:
BD+CD=24
Since the triangles are similar, their corresponding sides have constant ratio, which we can calculate from the corresponding sides DE and CF:
This ratio is the same for the other corresponding sides, so we can apply that for BD and CD:
Thus, the measure of CF is approximately 13, alternative D.
