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  1. A = ((1/2)h)(b1 + b2) Distributivity: A = hb1/2 + hb2 /2 Multiply both sides by 2: 2A = hb1 + hb2 Bring...

    1 Answers · Education & Reference · 20/06/2013

  2. ...by 2 to remove the fraction 2A=h(b1+b2) multiply left side by h 2A=hb1+ hb2 divide hb1 and 2A by h 2A/h=b1+ hb2 subtract hb2 from both sides...

    10 Answers · Education & Reference · 06/11/2008

  3. Yes, you can use it... the HB 2 is the key.... that is telling you the hardness of the graphite and a #2 = HB2 . Good luck on your test!!!!

    6 Answers · Education & Reference · 01/11/2006

  4. ... = h(b1 + b2) Expand the brackets: 2A = hb1 + hb2 Subtract hb2 from each side: 2A - hb2 = hb1 Divide by h...

    1 Answers · Education & Reference · 20/01/2010

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