Respuesta :

fieryanswererft

Answer:

23y -8

Explanation:

perimeter: length measure of all sides

perimeter of this shape:

2y - 9 + 6y +10 +5y - 7 + 10y -2

group terms ↓

2y + 6y + 5y+  10y -9 + 10 -7 -2

add basic numbers ↓

2y + 6y +5y +10y -8

final answer ↓

23y -8
Answer: 23y - 8

Explanation: The formula to find the perimeter of a quadrilateral which is a 4 sided figure is P = a + b + c + d.
So you input the side lengths of the quad into the letters.
6y + 10 + 5y - 7 + 2y - 9 + 10y - 2
You add all the constants and the like terms. So 6y + 5y + 2y + 10y - 2 is 23y + 10 - 7 - 11.
-7 - 11 is -18,
23y + 10 - 18
And finally 23y - 18.