If 8 men ----------------------------- >take 2 days to lay 100 feet
then
they can lay 50 feet in a day.
Each man lays 50/8 or 6.25 feet per day.
<span>3 men can lay 3 * 6.25 = 18.75 feet per day. </span>
<span>150/18.75 = 17.14 days.
the answer is </span>17.14 days.
The answer is 2x<span>^2
Because everything on the right of the minus sign will turn negative
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Above the core is Earth's mantle, which is made up of rock containing silicon<span>, </span>iron,magnesium<span>, </span>aluminum<span>, oxygen and other minerals. The rocky surface layer of Earth, called the </span>crust<span>, is made up of mostly oxygen, </span>silicon<span>, </span>aluminum<span>, </span>iron<span>, </span>calcium<span>, sodium, potassium and </span>magnesium<span>.</span>