Answer:
3
Step-by-step explanation:
An equilateral triangle means all sides have the same length and there are 3 sides to a triangle. Therefore, the answer is 3.
Let n be the number 18=60% of n
18=0.6n
18/0.6=n
30=n
Hi
Igbj7jgijgboihvfnjfv ghhgjmj
ABC = 180-120=60
ACB = 180-(40+60)=80
Therefore ECD= 80 as ACB and ECD are vertically opposite angles
the solution is A as that is where the graphs intersect each other
which means either
or
. The equation has no solution, since
is always bounded between -1 and 1. The second has one solution at
, and any number of complete revolutions will also satisfy this equation, so in general the solution would be
where
is any integer.
So you could choose
and
.