Answer:
540°
Step-by-step explanation:
Just divide the shape into triangles and count the number of triangles. This is what your formula is doing for you. It's telling you how many triangles make up the shape and then multiplying that number by 180 degrees to find the sum of your interior angles.
Answer:
20/9
Step-by-step explanation:
Answer:
1
Step-by-step explanation:
1. expand the terms on the right side of the equation: 6=2y+4
2. subtract 4 from both side: 2=2y
3. divide both side by 2: 1=y
A translation is when a triangle moves from one location to another while staying the same size/position.
A rotation is when it changes positions, like it can turn upside down or to the side.
A reflection is when it translates over the x or y axis.
Answer:
x=3, y=-1. (3, -1).
Step-by-step explanation:
7x-5y=26
2x+4y=2
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simplify 2x+4y=2 into x+2y=1
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7x-5y=26
x+2y=1
-----------------
x=1-2y
7(1-2y)-5y=26
7-14y-5y=26
7-19y=26
19y=7-26
19y=-19
y=-19/19
y=-1
x+2(-1)=1
x-2=1
x=1+2
x=3
