Answer:
I don't have a calculator with me, and I'm lazy to take it, but here is how it's done
Step-by-step explanation:
First let's just take it as the shape is a perfect rectangle without any folds. Therefore just take
9 x (3.5 + 2) = 63
Now just count the area of those two folded triangles. Then just take 63 and minus of the area of those two triangles, that's your anwer
Answer: (0.1658, 0.2742)
Step-by-step explanation:
Formula to find the confidence interval for population proportion is given by :-

, where n= sample size
z*= Critical value
= sample proportion.
As per given , we have
Significance level : 
According to z-table, Critical value for 99% confidence interval : z*=2.576
Let p be the proportion of people in the country that have red hair.
n= 388

Now, required confidence interval for proportion of people in the country that have red hair will be :-




The 99% confidence interval for the proportion of people in the country that have red hair= (0.1658, 0.2742)
Answer:
may be a
Step-by-step explanation:
I can't do explain
The next two numbers are 7 & 7.6.
It is a simple linear equation with one unknown, we can solve it:
(x/2) - 2 = 9
<span>(x/2) = 9 + 2 = 11
</span>x = 2*11
x = 22
that is the equation's solution