Answer:
<h2>36.14 pounds of 34% copper alloy and 9.86 pounds of 48% copper alloy</h2>
Step-by-step explanation:
First alloy contains 34% copper and the second alloy contains 48% alloy.
We wish to make 46 pounds of a third alloy containing 37% copper.
Let the weight of first alloy used be in pounds and the weight of second alloy used be in pounds.
Total weight =
Total weight of copper =
Subtracting 34 times first equation from second equation,
∴ 36.14 pounds of first alloy and 9.86 pounds of second alloy were used.
Answer:
Step-by-step explanation:
We are given
Calculation of P+Q:
now, we can combine like terms
Calculation of Q-P:
Firstly, we will distribute negative sign
now, we can combine like terms
Answer:
63 books per capita in the library
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Step-by-step explanation:
Given
Required
Determine the book per capita
To do this, we simply divide the number of books by number of person;
(Approximated)
Hence;
<em>There are 63 books per capita in the library</em>
Answer:
1500 ft
Step-by-step explanation:
Assuming the building is a regular rectangular prism, then we can just look at the scale. The building is 120 pixels tall and 20 pixels wide. The plot is 250 feet wide. 120 is 6 times larger than 20 so the assumed scale factor is 6. So 250 * 6 = 1500. The building should be 1500 feet tall.