Finish solving the system of equations –9.5x – 2.5y = –4.3 and 7x + 2.5y = 0.8 using the linear combination method
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ANSWER
The possible rational roots are:
EXPLANATION
According to the rational root theorem, the possible rational roots of the polynomial,
are all the possible factors of the constant term divided by all the possible factors of the coefficient of the highest degree of the polynomial.
Therefore we examine the numerator and denominator of the options provided to see if they are factors of 10 and 4 respectively.
For
, we can see that 1 is a factor of 10 and 2 is a factor of 4, hence it is a possible rational root.
The same thing applies to also.
As for
, 2 is a factor of 10 but 5 is not a factor of 2, hence it is not a possible rational root.
Θ=3 radians
Step-by-step explanation:
Step 1:
Let the arc length (S) be 6 units
Radius of Arc(r) = 2 units
By the basic formula to find the central angle we have
Θ
where, S= Arc length
r= Radius of arc
Θ = Central angle
Step 2:
From the formula to find Θ,
Θ = (S/r)
Θ = ( 6 ) / ( 2 )
Θ = 3 radians