You can see if the other angles add up to 180 or 360 degrees (depending on shape) then add them to make it the number, for example, if a triangle has a right angle, then the other 2 angles are 45 degrees, knowing that EVERY triangle's angles add up to 180 degrees.
Answer:
5
Step-by-step explanation:
an = an_(n - 1) - 5
a2 = a1 - 5
a2 = 20 - 5
a2 = 15
===========
a3 = a2 - 5
a3 = 15 - 5
a3 = 10
============
a4 = a3 - 5
a4 = 10 - 5
a4 = 5
-12 is the answer Hope this helps
The answer would be C because you are paying for 3 video games and each one is $17.25 so therefore you would multiply 3(17.25)=$51.75 that was spent.