zieglerlana
12.10.2019 •
Mathematics
Astore has a $179.99 item on sale for 25% off. what is the discount on this item? $44.50 $49.50 $44.98 $45.00
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Ответ:
0.25(179.99) = 44.997 rounds to 45.00 <==
Ответ:
Multiplying the first equation by 2 and adding the equations results in 20x = 10. The solution of the system is (1/2, 5). The system 8x + 7y = 39 and 20x = 10 is formed by replacing 4x –14y = –68 by a sum of it and a multiple of 8x + 7y = 39.