El Sr. Negrón tiene que redactar una serie de cartas en su oficina. A lourdes le toma 6 horas pasar todas las cartas. A su compañera Rosabel, le toma 9 horas en realizar la misma tarea. Si
ambas trabajan juntas para hacer todo el trabajo de la oficina,
A. ¿Cuánto tiempo le tomará a ambos realizar el trabajo?
B. Explica con palabras, números o símbolos como obtuviste la respuesta."
Please help me . Spanish

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?

How do you create a data set with 8 points in it that has a mean of approximately 10 and a standard deviation of approximately 1?

Given the quadratic function f(x)=3x^2-24x+49 a. use “completing the squares” to convert the quadratic function into vertex form b. state the vertex c. find the x and y intercepts d. graph the function