Which represents a quadratic function?
2 answers:
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Answer:
The distance between A and B is <em>l(AB) = </em>13 units
Step-by-step explanation:
Given:
let,
A ≡ ( x1, y1 ) ≡ ( 0, 12 )
B ≡ ( x2, y2 ) ≡ ( 5, 0 )
To Find:
Length AB = ?
Solution:
Distance Formula for the distance between the two points ( x1, y1 ) and ( x2, y2 ) we have,
On substituting the above values we will get,
Therefore the distance between A and B is <em>l(AB) = </em>13 units
Answer:
Step-by-step explanation:
Given : Past experience has indicated that the breaking strength of yarn used in manufacturing drapery material is normally distributed and that σ = 4 psi.
A random sample of 8 specimens is tested, and the average breaking strength is found to be 98 psi.
i.e. n= 8 and
Critical value for 95% confidence =
Confidence interval for population mean :-
i.e.
Hence, a 95% two-sided confidence interval on the true mean breaking strength. =