Graceormex Graceormex

10-02-2021
Mathematics

contestada

Urgent please!!! I really don’t understand it, tysm to anyone who can answer thissss :))))
(53 points)

Urgent please I really dont understand it tysm to anyone who can answer thissss 53 points class=

Respuesta :

mhanifa mhanifa

10-02-2021

Answer:

(ax + by + cz)/(a + b + c)

Step-by-step explanation:

Average = Sum / Number

In terms of the scores we calculate the sum as:

ax + by + cz

The number is the sum of the frequencies:

a + b + c

Mean average score is:

(ax + by + cz)/(a + b + c)

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