Answer:2
Step-by-step explanation:
Given
Physics problem requires 20 min
Math problem require 10 min
suppose x question of Physics and y questions of Math are done
so according to the question
Time require for x Physics problem 
Time require for y Math problem 
so,
On solving (1) and (2)
we get 
and 
Maximum no of Physics question which can be solved is 2
Answer:
You can type that info into M-a-t-h-w-a-y and they can give you a correct answer.
Step-by-step explanation:
Look it up without the dashes. this website wouldn't let me type it without for some reason. Hope this helps!
Answer:
True
Step-by-step explanation:
Considering the above definition of Pooled Variance, the correct answer is TRUE.
This is because Pooled variance is used to determine the reasonable estimates of variance, where several repeated tests are expected at each value.
This helps to provide greater precision estimates of variance.
Answer:
6.4
Step-by-step explanation:
multiply
The domain is 
, where n is an integer.
- This is because cot x = 1/tan(x), and if tan x = 0, then the fraction is undefined.
The range is <u>all real numbers</u>.
