Answer:
50miles/hour
Step-by-step explanation:
400/8 is 50.
Balance in account cannot be less than
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, 
Answer:an equivalent answer is 4/14 or 18/63
Step-by-step explanation:
i really dont understand stand the question but there