Un docente tiene 60 balones y los va a repartir de acuerdo al número de estudiantes de grado primero, segundo y tercero, de tal manera que a grado primero le correspondan 5/12 del total de balones, a grado segundo 3/7 de los balones restantes y a grado tercero los que quedan. Para hallar el número de balones que le corresponden a cada grado, se realiza una ilustración. La representación correcta y el número de balones correspondientes es:

(w – 2.5)(w + 2.5)

(–4v – 9)(–4v + 9)

step-by-step explanation:

b. 153 students do not participate in sports and seventy-five 12th graders were surveyed

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