The sample is not randomly chosen. if you call every tenth person in a sample of 40 people
then you have 10, 20, 30, 40
and your sample is 4 people
that seems pretty small. I hope this helps :) . Have a nice day!
(-10= xy + z ) (-z)
(-10-z = xy ) (1/y)
-10/y - z/y = x
x = -(10+z)/y
Answer:
x=-3 y=17 (-3;17)
Step-by-step explanation:
-3x+8-y=0
-5x+2-y=0
-2x-6=0
So: x=-3
While....by substituting: y=17
Answer 9(7j +7) is an equivalent expression.
Answer:
66k+9
Step-by-step explanation:
Simplify: 50k+5+4+16k
Combine like-terms: 66k+9
Hope this helps
