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max2010maxim [7]
2 years ago
12

Help on this please.

Mathematics
1 answer:
Katena32 [7]2 years ago
5 0

Answer:

x=25

Step-by-step explanation:

This is a parallelogram, so we know the angle opposite of a certain angle is the same. (i.e. Angle D=Angle B). Since we know what angle D, A, C, and B add to 180, we can add them to get (5x+15+2x-10)*2=360, which simplifies to 14x+10=360. If we subtract 10 from both sides, we get 14x=350. Solving for x is easy from here. We simply do 350/14 and get 25. Hopefully this explanation helps!

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Answer:

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Step-by-step explanation:

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According to the rational root theorem, what are all the potential rational roots of f(x)= 5x^3-7x+11
Tems11 [23]

The rational root theorem states that the rational roots of a polynomial can only be in the form p/q, where p divides the constant term, and q divides the leading term.

In your case, both the leading term 5 and the constant term 11 are primes, so their only divisors are 1 and themselves.

So, the only feasible solutions are

\pm\dfrac{11}{5},\quad\pm 11,\quad \pm\dfrac{1}{5}, \pm 1

For the record, in this case, none of the feasible solutions are actually a root of the polynomial.

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3 years ago
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Alekssandra [29.7K]
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