Answer:
The value is
Step-by-step explanation:
From the question we are told that
The null hypothesis is 
The level of significance is 
From the z table the critical value of
considering the two tails of the normal curve( This is because this a two tailed test ) is

Hence the critical value is
Answer:
122
Step-by-step explanation:

Plug in 1 for x and 11 for y

1 to the power of any number will always equal 1

I hope this helps!
Parallel lines never intersect purpendicular lines intersect at a single point forming a 90 degree angle
Answer:
after 1 hr = 20 after 2 hrs =<em> </em> 40 after 3 hrs = 80 160 n 3 hrs