Ayuda plis : c
en una sala hay mesas de diferentes tamaños. en la primer mesa hay una persona, en la segunda dos, en la tercera tres y así sucesivamente, cada persona saluda una sola vez a cada integrante de su mesa, construye la sucesión en la que los términos corresponde al numero de saludos en la primera mesa, segunda mesa, tercera mesa, etc. ¿cual es el termino general de la sucesión?

b

step-by-step explanation:

a difference is the result of subtraction. while each of these expressions has subtraction in it, a difference will be the result when subtraction is the last operation applied in the order of operations for the expression. this means subtraction must be outside of the parenthesis. only b has this.

d. it is a convex pentagon because it has five sides and none of the sides would extend into the inside of the polygon.

step-by-step explanation:

to find the perimeter of the rectangle this is the expression:

x-9+x-9+3x-4+3x-4=138

if we simplify it:

8x-26=138

remember, 138 is what it all adds up to

the length is 11.5cm

the width is 57.5cm

the area is 661.25cm^2

the answers might not be correct use at own risk

answer:   (s+1)(s+4)

step-by-step explanation:

factor s2+5s+4

s2+5s+4

=(s+1)(s+4)