Estimate: 55-6 B 50 C. 8 D 40
1 answer:
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The answer is -5, -5 added by 5 cancels each other out. Then when you add 4x + 8x, you get 12x. So when you do 12x= -60, you get -5.
notice, the denominator for each fraction is the same, thus the LCD is just 3.
Answer is dm².
In order to calculate the area of the board that can be seen, we need to calculate the area of the the rectangular board and the circular frame. The difference of both's area is the required answer.
Refer to the attachment for step by step solution. :)
