According to the Rational Root Theorem, Negative two-fifths is a potential rational root of which function? f(x) = 4x4 â€" 7x2 x 25 f(x) = 9x4 â€" 7x2 x 10 f(x) = 10x4 â€" 7x2 x 9 f(x) = 25x4 â€" 7x2 x 4.

step-by-step explanation: where's the phrase?

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80° is the measure of gh

step-by-step explanation:

circle f is congruent to circle j

we have two circle with center f and j.

both circles are congruent. the radius of the circle would be equal.

see the attachment for the circle.

we are given ∠efd ≅ ∠gjh

therefore, arc (ed) = arc (gh)     (∴ circle f is congruent to circle j)

but ∠dfe=80°=arc (ed)

therefore, arc (gh) = 80°

thus, 80° is the measure of gh