Para cada una de las siguientes funciones cuadráticas, calcula las coordenadas del vértice. Recuerda reescribir la misma de la forma y = Ax2 + Bx + C para así determinar los coeficientes A, B, C.
a. f(x)=-x2 +3
b. y–2=3x2 –6x
c. (x–3)2+2y–11=0
d. y–5x+2x2 +9=0

step-by-step explanation:

you can add the two numbers and divide the result by 2. or you can find the gap between the two numbers and add half of this to the smaller number.

the answer is 11.2 (i know i’m late)

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