Jimmy did a survey to answer the following question: what is the average writing score of grade 6 students? the mean writing score was 3.8 points. if all the students scored the same, what would be the writing score of each student?

answer

d. 10

explanation

the distance from point y to wx is the height of the triangle.

using pythagoras theorem,

group similar terms to get,

this implies that,

take positive square root of both sides to get,

this implies that,

i hope this is what you were looking for.

see attached graph