A. Judy made a mistake between Steps 1 and 2
To factor
, you have to factor it as 
, not 
, because that will leave an extra 6x because of 8x - 2x.
To factor
Anyone got discord or no
2 answers:
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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 :)
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 :)