Answer:
by 28% or 280%
not completely sure
Step-by-step explanation:
Answer:
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Sampling every third member of the club in her physical education class should produce a more representative sample.
Sampling refers to a method used in statistical research in order to obtain data from a small part of a whole in such a way that the data obtained is representative of the whole.
The sampling method in which she surveyed every third member of the club in her physical education class should produce a more representative sample.
Learn more: brainly.com/question/24842573
The value of y is equal to 18.
<h3>What is the value of a variable related to geometric system?</h3>
In this problem we have a geometric system generated by two lines intersecting each other and generating two pairs of angles supplementary to each other. The system of linear equations representing the situation is presented below:
(8 · y - 13) + (3 · x + 4) = 180
3 · x + 8 · y = 189 (1)
(10 · x - 19) + (3 · x + 4) = 180
13 · x = 195 (2)
The solution to this system is (x, y) = (15, 18). The value of y is equal to 18.
To learn more on supplementary angles: brainly.com/question/18164299
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72 minutes
We require their hourly rate of work
Maria cleans 
the house in 1 hour
Sasha cleans 
of the house in 1 hour
let x be the time it takes both to clean the house
+ = 
multiply through by 6x
3x + 2x = 6
5x = 6 ⇒ x = 
Together they can clean the house in 72 minutes
