Answer:
Angle 1: 150°
Angle 2: 30°
Angle 3: 150°
Step-by-step explanation:
1 is 150° because a line is 180° total, and 180-30= 150°
2 is 30° because they are the same angle just reflected across the y-axis.
3 is 150° because they are the same angle as 1 just reflected across the x-axis.
Answer:
simplified the answer ( i think) is 
Step-by-step explanation:
Thank you for being so polite you were when u asked ur question, really hope this helps
Answer:
The ball will reach the ground when h=0.
Set the equation equal to 0.

Step-by-step explanation:
The height of a golf ball after it has been hit from the top of a hill can be modeled by the equation
,
where h is the height in feet and t is time in seconds.
When ball will reach the ground the distance between ball and ground is 0. So, the ball will reach the ground when h=0.
To find the time it takes for the ball to reach the ground, set the equation equal to 0 and use the Zero Product Property to solve for $t$.
Solve the equation using the Zero Product Property.
So, 
Answer:
x=
Step-by-step explanation:
3x-12-6x+21=23
-3x+9=23
-3x=14
x=