Answer:
x=19
Step-by-step explanation:
The perimeter of the right triangle is
P=9+12+15 =36
The perimeter of the left triangle is
P =x-7+ x-7+ x-7 = 3x-21
Set them equal
36 = 3x-21
Add 21 to each side
36+21 = 3x-21+21
57 = 3x
Divide each side by 3
57/3 = 3x/3
19 =x
The polygon is built of 7 triangles (picture).
Answer:
$4.68
Step-by-step explanation:
Step-by-step explanation:
Divide a percentage by 100% to convert it.
=> (1/20%) / 100% = 0.0005 or 1/2000.
