Answer:
20/7 days (just less than 3 days)
Step-by-step explanation:
Recall that (1 job) = (rate)(time), so time = (1 job) / (rate).
Set up and solve the following equation:
1 job
------------------------------- = time required for 2 pumps working together
1 job 1 job
---------- + -------------
4 days 10 days
This comes out to:
1 job
------------------------------------------- = time required
10 job-days 4 job-days
------------------ + -----------------
40 days 40 days
or:
1 job
-------------------- = (40/14) days, or 20/7 days (just less than 3 days)
14 job·days
-----------------
40 days
♥ Lets solve this:
(7*10^5)^2(7*10^5)^2
Starting with 10^5
10*10*10*10*10
We get <span>100000
<span>Now we have 7*100000
Solve for that:
We get </span></span><span>700000
Now we have </span><span>700000^2
Solve for that
We get </span><span>490000000000
and in Scientific notation that is
4.9*10^11</span>
My method is on a) you would just subtract 12 and 7 which is 5. You can do the rest and then when you get all the answers put them from smallest to largest
The degrees of freedom in a regression model is 2 if the model that has 10 observations and 7 independent variables.
<h3>What is a degree of freedom?</h3>
The amount of rows of training data used to fit the model equals the degrees of freedom.
Total observation = 10
Number of independent variables = 7
Degree of freedom for regression = 10 – 7 - 1
= 2
Thus, the degrees of freedom in a regression model is 2 if the model that has 10 observations and 7 independent variables.
Learn more about the degree of freedom here:
brainly.com/question/14222862
#SPJ1
Answer:
<h2>Pass = $17.22</h2><h2>Lunch = $8.94</h2>
Step-by-step explanation:
People = 34 + 4 = 38
Pass price per person = 654.36 / 38 = $17.22
Lunch price per student = 303.96 / 34 =$8.94
Pass = $17.22
Lunch = $8.94
