57° is the answer
A triangle adds up to 180° , a circle adds up to 180°
T = 126 °
S = 180° - 126°
S= 54°
R = 69°
Q + S + R = 180°
69 + 54° = 123°
=180° - 123° =
Q= 57°
Answer:
Step-by-step explanation:
It is a linear homogeneous differential equation with constant coefficients:
y" + 4y = 0
Its characteristic equation:
r^2+4=0
r1=2i
r2=-2i
We use these roots in order to find the general solution:
Think about rise over run. Make the -4 a fraction into -4/1. Rise is the first, so you go down 4 pts down. Then run is 1, so you go 1 right. In this case, there is no beginning, so you begin at 0. The coordinates will be (0, 0) and (1, -4). You got the graph.
The third one is correct, 20,007 is less than 20,070