It is an irrational number.
Irrational numbers can be written as a decimal but not a fraction. It has an endless non-repeating digits to the right of the decimal point.
Rational numbers are those that can be written as a ratio. Meaning it can be written as a fraction where both numerator and denominator are whole numbers.
Discriminant for the quadratic equation 
is 
How to find the d Discriminant of the quadratic equation ?
We know that the standard quadratic equation
Discriminant of the equation is 
Equation given in the question is
So we can find the values of 
Substitute the values
Learn more about the discriminant of the quadratic equation here:
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Answer:
Sue of estimates = 6200
Step-by-step explanation:
can be estimated as 
which is 
Similarly 
can be estimated as 
which is 
∴ Sum of estimates = 
Answer:
k=42.5573 and x=0.015699
Step-by-step explanation:
Step: Solve k=35.5x+42for k:
k=35.5x+42
Step: Substitute 35.5x+42 for k in k=991x+27:
k=991x+27
35.5x+42=991x+27
35.5x+42+−991x=991x+27+−991x(Add -991x to both sides)
−955.5x+42=27
−955.5x+42+−42=27+−42(Add -42 to both sides)
−955.5x=−15
−955.5x
−955.5
=
−15
−955.5
(Divide both sides by -955.5)
x=0.015699
Step: Substitute0.015699 for x in k=35.5x+42:
k=35.5x+42
k=(35.5)(0.015699)+42
k=42.5573(Simplify both sides of the equation)
Hope this helps!
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