Answer:
-2
Step-by-step explanation:
3-11+6
-8+6
-2
Answer:
5
Step-by-step explanation:
This means that 9/(2x-1)=15/(3x), so 27x=30x-15. This means that 3x=15, so x=5.
The answers in order is
Bc
Dc
Sas
First blank: not random Because he sent it to the top 5 students. Not random students throughout the grade.
second blank: I would guess not valid because it was not a random sample.
I'm sorry! i really wish i could help you out more on this one. personally, i'm pretty confused myself. i think the data should have more years because i'm not sure how you're supposed to give a reasonably close predicted value when it's so far apart. your graph looks really good though other than the trend line should be straight across the points i believe. i could try to link a photo if you're not sure of what i'm talking about. i'll keep looking at this one though and let you know if i figure anything out.
