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.

Which rational number could be graphed between -4 and -5

Ivan and jeff buy a package of 8 pens for $4.00. ivan wants 5 of the pens, and jeff wants 3.how much should each student pay?

Two language majors, anna and megan, took exams in two languages. anna scored 85 on both exams. megan scored 74 on the first exam and 85 on the second exam. overall, student scores on the first exam had a mean of 82 and a standard deviation of 4, and the second exam scores had a mean of 71 and a standard deviation of 13. a) to qualify for language honors, a major must maintain at least an 85 average across all language courses taken. so far, which of anna and megan qualify? b) which student's overall performance was better?