person4936
02.11.2020 •
Mathematics
The cost of 5 sandwiches and 2 drinks is $14.50. The cost of 4 sandwiches and 6 drinks is $16. How much does one sandwich cost?
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Ответ:
2.50 is the answer
Step-by-step explanation:
Ответ:
$3.05
Step-by-step explanation:
-3 x (5s + 2d = 14.50) = -15s - 6d = -43.50
(-15s - 6d = 43.50) + (4s + 6d = 16)
-9s/-9 = -27.50/-9
s = 3.05
Ответ:
4x + 1 = 2 + x
4x - x = 2 - 1
3x = 1
x = 1/3