Answer: x = 4
Step-by-step explanation:
x + y = 5
y = 5 - x
3x - 3y = 9
=> 3x - 3(5-x) = 9
=> 3x - 15 + 3x = 9
=> 6x = 24
=> x = 4
Answer:

Step-by-step explanation:

Find common denominator for 13 and 39
common denominator is 39
rewrite fractions so they have the same denominator

add them up

simplify/ put in the lowest terms

The slope-point form of line:

We have the points (-9, 7) and (6, 2). Substitute:

The slope-intercept form of line:
.
We have the slope m:

Pu the coordinates of the point (6, 2) to the equation:

<em>add 2 to both sides</em>


The random sample of the students is an illustration of sampling
The chi-square test for goodness of fit is inappropriate because the variable under study is not categorical.
<h3>How to determine the reason chi square is not appropriate?</h3>
The dataset is given as:
Monday 34
Tuesday 29
Wednesday 32
Thursday 28
Friday 19
The variable of the above dataset is a not a categorical dataset.
One of the conditions of the chi-square test for goodness of fit test is that the variable under study must be categorical.
Hence, the chi-square test for goodness of fit is inappropriate because the variable under study is not categorical.
Read more about chi-square test at:
brainly.com/question/19959558
First one is 512,160 and the second is 84,100