Answer:
lower limit : 36.44
upper limit : 39.56
Step-by-step explanation:
Given :
s = 9
n = 90
x = 38.9
Alpha, α = 0.10
∴ 
The confidence interval is :




Therefore,
lower limit : 36.44
upper limit : 39.56
Answer:
1.5 meters
Step-by-step explanation:
the fabric is 4 meters long
first piece is 1.25 meters long
second piece will be (4-1.25)=2.75 meters long
therefore the second piece is (2.75-1.25) meters longer
Answer:x=6
Step-by-step explanation:
So if y is 0, that’s 8(y) which is 0. That means the equation is 2x=12, which means x is 6
My comments don’t work! But it’s (6,0)
it means that the length is 5 times the width