A lab student measures the mass of a piece of lead to be 13.87 g. She then places the????? help 74-12x=? help!!!!!!!!!!!!!!!!!!!
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Answer:
<h2>x = 1</h2>Step-by-step explanation:
Look a t the picture.
The triangles on the picture are similar.
Therefore the sides are in proportion:
<em>cross multiply</em>
<em>divide both sides by 40</em>
