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Question
in the figure below, s is the center of the circle. suppose that jk=7, lm=7, ns=6, and ps=4x - 6. find the following.
figure of a circle with center s, chords jk and lm, perpendicular segments sn and sp to chords jk and lm respectively, with right angles at n and p. there are input boxes for x and lp
Step1: Aplicar el teorema de cuerdas
Las cuerdas \( JK \) y \( LM \) tienen la misma longitud (\( JK = LM = 7 \)), por lo que sus distancias al centro \( S \) deben ser iguales. Entonces, \( NS = PS \).
Dado \( NS = 6 \) y \( PS = 4x - 6 \), establecemos la ecuación: \( 4x - 6 = 6 \).
Step2: Resolver la ecuación para \( x \)
Agregar 6 a ambos lados: \( 4x = 6 + 6 = 12 \).
Dividir por 4: \( x = \frac{12}{4} = 3 \).
Step3: Encontrar \( LP \)
La cuerda \( LM = 7 \), y la distancia del centro a la cuerda bisecta la cuerda. Entonces, \( LP = \frac{LM}{2} = \frac{7}{2} = 3.5 \) (o \( \frac{7}{2} \)).
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\( x = 3 \), \( LP = \frac{7}{2} \) (o \( 3.5 \))