QUESTION IMAGE
Question
find the value of x first (linear pair angles are supplementary). then, find the measure of y (vertical angles are congruent).
4 find the value of y.
(8y - 13)°
(3x + 4)°
(10x - 19)°
a) 12 rihanna
b) 15 jennifer lawrence
c) 16 jimmy fallon
d) 18 drake
e) 19 gwen stefani
Step1: Resolver para x (ángulos suplementarios)
Los ángulos $(3x + 4)^\circ$ y $(10x - 19)^\circ$ forman un par lineal, así que suman $180^\circ$:
$$(3x + 4) + (10x - 19) = 180$$
Simplificar la ecuación:
$$13x - 15 = 180$$
$$13x = 195$$
$$x = 15$$
Step2: Encontrar el ángulo vertical a $(8y-13)^\circ$
Sustituir $x=15$ en $(3x + 4)^\circ$:
$$3(15) + 4 = 45 + 4 = 49^\circ$$
Step3: Resolver para y (ángulos verticales congruentes)
Los ángulos $(8y - 13)^\circ$ y $(3x + 4)^\circ$ son verticales, así que son iguales:
$$8y - 13 = 49$$
$$8y = 62$$
$$y = 19$$
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E) 19 Gwen Stefani