The employees of a company were surveyed on questions regarding their educational background (college degree or no college degre
1 answer:
Answer:0.68
Step-by-step explanation:
Given
Total of 600 employees out of which 400 had college degree ,100 are single
and 60 were single graduates
therefore out of 100, 60 were single and rest 40 are single undergraduate
and out of 400, 60 were single graduates thus 340 are married graduate.
Now out of 600, 100 were single i.e. 500 is married
thus Probability that an employee is married and has a college degree is
=
P==0.68
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Answer:
r =
Step-by-step explanation:
So we need to complete the square for both parts of the equation
First though we can add the 6 to the other side so we have x² + 2x + y² + 4y = 6
So first we can complete the square for x² + 2x
To do so we need to use to figure out the number we need to add to both sides
In this case our b is 2, so substituting this in we get
Here we add 1 to both sides and now we have x² + 2x + 1 + y² + 4y = 6 + 1
Now we can follow the same steps to complete the square for y² + 4y
Here our b is 4, so substituting this in we get
Now we add 4 to both sides and now we have x² + 2x + 1 + y² + 4y + 4 = 6 + 1 + 4
Now condensing everything we have (x + 1)² + (y + 2)² = 11
The formula for a circle is (x - h)² + (y - k)² = r²
In our equation we have r² = 11
To find the radius we need to take the square root of both sides to get r =
we are given
Firstly, we will factor numerators and denominators
we can see that
n^2 -6 is factor on both numerator and denominator
so, it will get cancelled
and n^2 -6 can not be equal to 0
so, one of restriction is
we can simplify it
we know that denominator can not be zero
so, option-B.......Answer