Help please..............
2 answers:
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Given.
(1)
(2)
Re-arrange equation (2)
Multiply equation (2) by -1
(3)
Combine like terms and solve.
Divide by (2y) and solve for (y).
Substitute (y) for equation (1).
Add (8) to both sides.
Divide by (3).
Check your work.
Your answers is and
<span><u><em>The correct answer is: </em></u>
4.
<u><em>Explanation</em></u><span><u><em>: </em></u>
To find this answer, we divide the number of windows, 50, by the length (in windows covered) of each covering, 15:
</span></span>
<span><span>.
This means that 3 coverings won't quite be long enough, so we will need 4. </span></span>
4.
<u><em>Explanation</em></u><span><u><em>: </em></u>
To find this answer, we divide the number of windows, 50, by the length (in windows covered) of each covering, 15:
</span></span>
This means that 3 coverings won't quite be long enough, so we will need 4. </span></span>