This looks one hundred percent correct to me and to check your answer you can plug in the answer you find to the first equation
17=37+4f
17=37+4(-5)
17=37-20
17=17
great job!!
Answer:
Add all the values up and divide by 7 ( as there are 7 values in the data set)
Step-by-step explanation:
1.9 + 10 + 11 + 16 + 12 + 12 + 14 = 76.9
If you divide by 7, you will get 10.9857142857.
Answer:

It is a perfect square trinomial.
Step-by-step explanation:
The square of a binomial can be solved like this:

We have the expression:

Then, we consider a and b as:

The solution would be:




Answer:
2h10min
Step-by-step explanation:
France's local time is 1 hour ahead in Britain's time => the train arrived at 01:13 in Britain's time
We can switch 22:57 to 10:57pm, and 01:13 to 13:13am
Add 3 minutes to 10:57,we get 11pm
13:13 - 11 = 2h13
Minus 3 minutes, we get 2h10
I think this is the answer