Step-by-step explanation:
please mark me as brainlest
1/ R2 (all I could come up with)
Let's say each row sums to 15
If we had 3 rows, then the total sum would be 3*15 = 45
If we added all of the values in the 3x3 magic square, then we'd get 45 as well.
This is one example showing that
sum of all values = (number of rows)*(magic constant)
You can replace "rows" with columns to get the same idea, because each column also adds to the same magic constant. The diagonals are an exception since we only have two of them.
Using a linear function, it is found that the estimated French score is of 38.1875.
A <em>linear function</em> has the following format:

In which:
Searching the problem on the internet, it is found that two points of the line of best-fit are: (10,65) and (90,26).
The slope is given by <u>change in the output divided by the change in the input</u>, hence:

Then:

Point (10,65) means that when
, and this is used to find b.



Hence:

For a student who got 65 in math, x = 65, and hence:

The estimated French score is of 38.1875.
For more on linear functions, you can check brainly.com/question/16302622
15 in:120 f
------ -----
15 15
1 in:8 ft
Every inch equals 8 ft.