En la clase de matematicas hay un total de 50 alumnos han aprobado el 80% ¿Cuántos alumnos han reprovado

Responder:

10

Explicación paso a paso:

Dado que:

Número total de estudiantes = 50

Porcentaje que pasó = 80%

Si pasó el 80%;

luego porcentaje que falló:

(100 - 80)% = 20%

Número que falló:

20% del total de estudiantes

0,2 * 50

= 10 estudiantes reprobaron

< coa = 150 ( given)

as ba and bc are tangents

so oc and oa is perpendicular to cb and ab respectively because in circle normal passes through centre

so in quadrilateral oabc

< coa + < oab + < ocb + < abc = 360

150 +90+90 + < abc = 360

330 + < abc = 360

< abc = 360 -330 = 30

so < abc = 30

⭐dhruv⭐

hi there!

step-by-step explanation:

a roof pitch is basically for every inch rise there is 12 inches run.

the height of the roof is also known as the rafter.

formula: rafter^2 = rise^2 + run^2

rafter^2 = 5^2 + 12^2

rafter^2 = 25 + 144

rafter ^2 = 169"^2

the height of the roof from the lowest point to the highest point is 169"^2.

hope this : )