The number of pounds of copper in 120 pounds of brass is = 78 pounds of copper
<h3>Calculation of number of pounds of copper</h3>
The percentage of copper in the brass = 65%
Therefore the quantity of copper in the brass = 65/100= 0.65 pounds
This means that 1 pound brass contains = 0.65 pounds of copper
The quantity of copper in 120 pounds of brass = 120 * 0.65
= 78 pounds of copper.
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Complementary angles add to 90 degrees. This means that 65 + x = 90, so x = 90 - 65 = 25.
Hello :
y= <span>√(x+6) +2
answer :
</span><span>d.(-2,4)
because : when x =-2 y =</span>√(-2+6) +2 = √4 +2 2+2 = 4
It would take just over 6 minutes assuming it takes him 2. 6 minutes to wax a single square inch somehow.
