B is the answer cause when u put them all in that what i got
Answer: 1.75 minutes
Step-by-step explanation:
6 gallons per minute.
14.5-4=10.5
10.5/6=1.75 minutes
Add the x's
SO 3x=18
divided by 3
So x=3
Answer:
<h2>x = 10.3</h2>
Step-by-step explanation:
Use sine.

We have:

<em>look at the table in the picture</em>
Substitute:
<em>multiply both sides by 16</em>

Answer:

Step-by-step explanation:
If we had 2 independent samples with population variances unknown and equal and we want to compare the population mean between the both groups, the test statistic will be:

Where 
So, the t-student has
degrees of freedom
Where
and
are the means of the groups,
and
are the size of the samples and
and
are the sample variances.