Answer:
The value is
Step-by-step explanation:
From the question we are told that
The population mean is 
The proportion is 
The value considered is 
Generally given that the speed measurement is normally distributed we have that

Generally


Hence

It'll go positive but for every number or goes half way
Answer:
0
Step-by-step explanation:
You can't construct any triangles with those angles. Because when you add all the angles of a triangle, it has to add up to 180. But when we add 50,70, and 100, it equals 220. So you can't construct any triangles.
Hope this helps.<em> (If it does, please mark me brainliest)</em>
Answer:
2·x²+4
Step-by-step explanation:
The sum is an answer to an addition problem and 2 times a number means to multiply by 2. That number is squared so you it's to the second power.