Answer:
C. that the sample size is very large.
Step-by-step explanation:
Here the sample size is large which results in the p-value being less. As a result, reject the null hypothesis, and the effect was thus statistically significant.
The value of the 5 in 756 is 50
The dimensions of the rectangle with perimeter 108 and whose area is large as possible if the both values are the same number. For the rectangle to have maximum area, the dimensions should be equal.
Let the dimensions be x
thus the perimeter will be:
2(x+x)=108
2(2x)=108
4x=108
x=27
thus for the rectangle to have a maximum area the dimensions should be 27m by 27 m
Answer:
15 black water bottles
Step-by-step explanation:
let w represent white water bottles, and let b represent black water bottles.
set up a system of equations:
w+b=20
w+2b=35
(the top equation shows that the number of white water bottles he sold and the number of black water bottles he sold equals to 20, since it says that the total number of water bottles is 20. the bottom equation shows that white water bottles cost $1, and black water bottles cost $2, and that the total amount of money he got from selling them is $35).
in the top equation, isolate w:
w+b=20
w=20-b
now we do substitution. in the bottom equation, substitute 20-b for w:
w+2b=35
20-b+2b=35
then, solve:
b+20=35
b=15
this means that he sold 15 black water bottles.
