leo es el rector de un prestigioso colegio en la ciudad de México y necesita hacer un informe donde conste la media de estudiantes por salón en primaria, luego de hacer el respectivo recorrido encontró los siguientes datos {35,45,42,38,40,40} ¿Cuál es la media de estudiantes por salón en el colegio de leo?

n=9

step-by-step explanation:

7 times a number = 7n

decreased by 13 = 7n-13

same as is =

5 times the number = 5n

increased by 5 = 5n+5

7n-13 = 5n+5

2n=18

n=9

answer: first option i.e. 'a' is correct.

step-by-step explanation:

since we have given that

number of minutes to wrap a small gift box = 4 minutes

we need to find the number of gifts to be wrapped in 5 minutes

since there is a direct variation, as the number of minutes will increase with   number of gifts to be wrapped.

so, let the number of gifts to be wrapped in 5 minutes be x.

so, it becomes,

hence, first option 'a'   is correct.

what? that isnt a question

step-by-step explanation: