Answer:
(a) 11 people
(b) 24 people
Step-by-step explanation:
Part (a)
Let X be the people who are network friends with three other people in the network.
The total pairings = 50
Since 
∈
,
Solve for X to find the people who are network friends with three other people,
Answer: There are 11 people who are network friends with three other people in the network.
Part (b)
Total people in the network,
Answer: There are a total of 24 people in the network.
Answer:
( x - 6 )² - 35
Step-by-step explanation:
x² - 12x + 1
→ Half the middle term and place it inside the bracket
( x - 6 )² + 1
→ Square it
( x - 6 )² - 36 + 1
→ Simplify
( x - 6 )² - 35
Answer:
Please see attachment
Step-by-step explanation:
Please see attachment
Answer:
D is correct option
Step-by-step explanation:
The correct option is D.
The standard quadratic equation is ax²+bx+c=0
Where a and b are coefficients and c is constant.
It means that constant are on the L.H.S and there is 0 on the right hand side.
Therefore to make it a quadratic equation first of all you have to add 11 at both sides so that the R.H.S becomes 0.
The given equation is:
2x2-x+ 2 = -11
If we add 11 on both sides the equation will be:
2x2-x+ 2 +11= -11+11
2x^2-x+13=0
Thus the correct option is D
You can further solve it by applying quadratic formula....
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