The sum of the interior angles of a triangle is 180. Add the three measures given and if you get 180 then those can be the interior angles of a triangle.
Answer:
The answer is 36
Step-by-step explanation:
40−(13−9)
40-4
36
Answer:
D
Step-by-step explanation:
The quadratic formula is
.
It is important because while some quadratics are factorable and can be solved not all are. The formula will solve all quadratic equations and can also give both real and imaginary solutions. Using the formula will require less work than finding the factors if factorable. We will substitute a=2, b=16 and c=-9.

We will now simplify and solve.

Answer:
lines CD, AE, and BD are half the length of CD
Step-by-step explanation:
All circles will have the same radius "r"
then CD = 4r
½CD = 2r
CB = AE = BD = 2r
The answer is the first one: 1 1/5 because 120/100 = 1.2