3u + 4u + 2u = 9u
9u = 90
1u = 90/9 = 10
since black is 2u ( from the ratio given)
2u = 10 x 2 = 20
Answer : 20cm of the pole is painted black.
The bar diagram is in the picture :)
B. The combined length of the two longest feathers is 828 inches.
Just look up how many hours are there In a year
Answer:
w = 8 000
Step-by-step explanation:
5(w + 4 x
) = 6 x 
5w + 20 x
= 6 x 
5w = 40 000
w = 8 000