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jenn8055
02.11.2019 •
Mathematics
1point) the top and bottom margins of a poster are 4 cm and the side margins are each 4 cm. if the area of printed material on the poster is fixed at 384 square centimeters, find the dimensions of the poster with the smallest area.
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Ответ:
2cm^2 by 2cm^2
Step-by-step explanation:
The area of the poster is 4cm by 4cm(all sides equal) which is 16cm^2.
If this is fixed at 384cm^2, the length of the 384cm^2 poster will be √384 which is 18cm^2.
Which means that a poster of side 4cm^2 us fixed inside poster with side 18cm^2.
To get the dimension with smallest area, we divide 18cm^2 by 4cm^2 and the remainder will be the smallest dimension i.e 2cm^2 by 2cm^2
Ответ:
5 adult and 3 student tickets were purchased
Step-by-step explanation:
Let x be the number of adult tickets . Then 8 − x is the number of student tickets .
7.25 x + 5.5 (8 − x ) = 52.75
7.25 x + 44 − 5.5 x = 52.75
1.75 x = 8.75
x = 5