15- 16 yd
16- 12 cm
17- 49 mi
18- 14 ft
Answer:
DC=6
Step-by-step explanation:
all is shown and pictured
( 'x' is not 144 .)
The supplement of an angle is (180 - x) .
The problem says that (2/3) of 'x' is equal to (180 - x) .
180 - x = 2/3 x
Multiply each side by 3 :
( Note: 3 x 180 = 540 .)
540 - 3x = 2x
Add 3x to each side:
540 = 5x
Divide each side by 5 :
<u>x = 108°</u> .
Answer:
Step-by-step explanation:
16.76FT^3