You have to use your area equations.like basex height
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General rule for multiplication or division between 2 numbers:
if you multiply or divide by:
1. same signs, answer is postive
2. different signs, answer is negative
so we have a -12 and a +9.9 so the answer is negative
then you divide 12 by 9.9
so the answer is negatiive, remember that
then divide as if positive
do
12/9.9
multiply by 10/10
120/99
simplify
120/99
factor out the 3/3
40/33
do the division (you can use calculator)
1.212121212121212121212121212
then it is negative so
-1.212121
The rotational order is the number of times it can rotate upon itself.
This means the shape has 9 sides.
360 /9 = 40 degrees
9(7k-4)-2(7k-12) so first separate these two parts of it ok. 9(7k-4) the - and 2(7k-12) so first let’s do 9(7k-4) multiply 9*7 to get 63k and 9*4 to get 36. So now u have 63k-36. Let’s do the 9(7k-12) now. Same thing. 2^7=14 then 2*12 = 24 which leaves u at 108. So now if u put i together it’s (63k-36)-(14k-24) soooo 63k-14k= 49k and 36-24 = 12 so ur answer is 49k-12 !!! Hope that helps man