Answer:
12
Step-by-step explanation:
12x12 is 144
Step-by-step explanation:
your answer would be the second light blue one
(2h+1)(h+3) x=-1/2,-5
Answer:

Step-by-step explanation:
Given
-- degree of freedom

Required
Determine the t-value
The given parameters can be illustrated as follows:

Where

So, we have:

To solve further, we make use of the attached the student's t distribution table.
From the attached table,
The t-value is given at the row with df = 28 and
is 3.673900
Hence, 
4.true
5.false
6.true
7.true
8.true