Answer:
x = 80
Step-by-step explanation:
The sum of the 3 angles in a triangle = 180°
Sum the 3 angles and equate to 180
x + 30 + 70 = 180, that is
x + 100 = 180 ( subtract 100 from both sides )
x = 80
Answer:
4
Step-by-step explanation:
Answer:
see below
Step-by-step explanation:
2:
# of sides = 3
# of vertices = 3
name of shape: triangle
3.
# of sides = 4
# of vertices = 4
name of shape: quadrilateral
4.
# of sides = 5
# of vertices = 5
name of shape: pentagon
5.
# of sides = 6
# of vertices = 6
name of shape: hexagon
6.
# of sides = 8
# of vertices = 8
name of shape: octagon
It is B.
You see that the line segment crosses the y-axis at 1? That is known as the y intercept.
Remember y = mx + b?
Well in this graph, b = 1
Therefore it is B
(-42) (-29) (-28)
-42 - 29 = -71
-71 - 28 = -99
-99 is your answer
hope this helps