30 degrees and 40 degrees and side measures of 5 cm, 7cm, and 8 cm. Explain, using sides and angles, which type of triangle Kevi
n drew.
1 answer:
Answer:
Step-by-step explanation:
Alright, lets get started.
Please refer the diagram I have attached.
Two angles are given as 30 and 40 degrees.
The third angle we could find by subtracting both angles from 180.
So, third angle would be =
As we can see, there is no side which is equal to each other.
Similarly, there is no angle which is similar to each other.
Hence the triangle is Scalene triangle. : Answer
Hope it will help :)
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Answer:
The probability that exactly 30% of these 10 telephone users do not have landlines in their homes is 0.2668.
Step-by-step explanation:
We are given that a recent survey found that 30% of telephone users have switched completely to cell phone use (i.e. they do not have landlines in their homes).
A random sample of 10 of these customers is selected.
The above situation can be represented through binomial distribution;
where, n = number of trials (samples) taken = 10 customers
r = number of success = 30% of 10 = 3
p = probability of success which in our question is the probability
that telephone users do not have landlines in their homes,
i.e. p = 30%
Let X = <u><em>Number of telephone users who do not have landlines in their homes</em></u>
So, X ~ Binom(n = 10, p = 0.30)
Now, the probability that exactly 30% of these 10 telephone users do not have landlines in their homes is given by = P(X = 3)
P(X = 3) =
=
= <u>0.2668</u>