Answer:
B. 14.2, 3.2
Step-by-step explanation:
diameter: 9 (count each box as 1)
d/2 = radius --> radius: 4.5
Area of a circle= πr^2
A= 63.6172
A/r = 63.6172/4.5 = 14.1
A/r^2= 63.6172/(4.5)^2 = 3.14
Answer:
I would say B
Step-by-step explanation:
when you are going down you tend to go faster because of gravity. So you would go down, up, down, up, and a little down. This would make B the answer because the speed is increasing when it goes down so that is the only answer that would make sense. Hope this helped! Have a good day! :)
A set of data has a normal distribution with a mean of 5.1 and a standard deviation of 0.9. Find the percent of data between 4.2 and 5.1.
Answer: The correct option is B) about 34%
Proof:
We have to find 
To find
, we need to use z score formula:
When x = 4.2, we have:


When x = 5.1, we have:


Therefore, we have to find 
Using the standard normal table, we have:
= 

or 34.13%
= 34% approximately
Therefore, the percent of data between 4.2 and 5.1 is about 34%
The answer is 0.135............................
It’s A. Because you’ll get 50/5 and when u divide it’s 10x