lovehelping1564
26.03.2020 •
Mathematics
Seven hotdogs and four hamburgers cost $13. Four hotdogs and seven hamburgers cost $14.50. How much does one hamburger cost and how much does one hotdog cost
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Ответ:
hotogs=$1.50 hamburgers=$1
Step-by-step explanation:
h=hotdog b=hamburger
7h+4b=13
4h+7b=14.5
(7h+4b=13)-4b
4h+7b=14.5
h=-0.57b+1.86
4h+7b=14.5
Ответ:
y = 5x + 2
Step-by-step explanation:
x=0 y=2 => b=2
x = 1 y = 7 b=2 => m =5