Yes, the answer of 25 is correct.
Answer:

Step-by-step explanation:
The missing details in the question are:


Required
The perimeter
This is calculated as:

So, we have:

Open bracket

Rewrite as:

if you need to simply 12/ c^-8 d^2=
=12 c^8/d^2
is the third choice
I think you mean "a set of three points". What I would do is take one point, find the slope from that point to another one, and then find the slope from the same starting point to the third one. If the (absolute values of the) slopes from the same starting point to each of the others are equal, then the three points are collinear.
Answer:
b. 3x - (5y -7)
Step-by-step explanation:
Let x represent "a number". Let y represent "another number."
The "3 times a number" is represented by 3x.
And "5 times another number less 7" is represented by 5y -7.
The difference between these quantities is the second subtracted from the first:
... 3x - (5y -7) . . . . matches selection b.