Answer:
40m
Step-by-step explanation:
to find the area of a triangle you must do bh/2
So you do 10 times 8 which is 80.
Then you do 80 divided by 2 which is 40.
I hope this helps!
Answer:

Step-by-step explanation:
Given

Required
Determine the common ratio
The common ratio r is calculated using:

Let 
So, we have:


From the sequence:


So, the equation becomes


Answer:
18
Step-by-step explanation:
the perfect square count as 1
the half square or the triangle count as half
then u got it bro
Answer:
2000
Step-by-step explanation:
Hello,
A or C means 2 ways
and then a digit means 10 ways 0, 1, 2, 3, 4, 5, 6, 7, 8, 9
so in total we have 2*10*10*10 = 2000 possible codes
Hope this helps