Considerando la suma de los ángulos que coinciden en cada vértice, justifica por qué no se puede construir un poliedro en los siguientes casos:
A) con 6 triángulos equiláteros en cada vértice.
B) con 4 cuadros en cada vértice.
C) con 4 pentágonos regulares en cada vértice.
D) con hexágonos regulares o polígonos regulares demás lados.

Brent works part-time at a clothing store. he earns an hourly wage of $15. if he needs to earn more than $45 in a day and works for x hours a day, which inequality represents this situation? a. 15x > 45 b. 15x < 60 c. x > 60 d. 15x < 45 e. x < 60

1- what do you think the product of a nonzero rational number and an irrational number is? is it rational or irrational? make use of variables, the closure property of integers, and possibly a proof by contradiction to prove your hypothesis.2- why do we have to specify that the rational number must be nonzero when we determine what the product of a nonzero rational number and an irrational number is? if the rational number were 0, would it give us the same result we found in the first question?

Find the value of x. round the length to the nearest tenth