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bekas [8.4K]
2 years ago
15

Ronnie raises chickens and pigs. He has 220 animals. He counted 640 legs. How many chickens does Ronnie have? Explain your think

ing.
Mathematics
1 answer:
laila [671]2 years ago
7 0

Answer:

f all his animals were pigs, there'd be 880 legs, There are 240 legs missing which represents 120 chickens (so he has 220 - 120 100 pigs.)

Check: (120 x 2) + (100 x 4) = 240 + 400 = 640 QED

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Step-by-step explanation:

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y = -3x^2 + x + 12\\y = 2x^2 - 6x + 5\\y = x^2 + 7x - 11\\y = -x^2 - 8x - 16\\

Let us understand the term Discriminant of a quadratic equation and its properties

Discriminant is denoted by  D and its formula is

D=b^2-4ac\\

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Properties of D: If D

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Hence in the given quadratic equations , we will find the values of D Discriminant  and evaluate our answer accordingly .

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y = -3x^2 + x + 12\\a=-3 , b =1 , c =12\\D=1^2-4*(-3)*(12)\\D=1+144\\D=145\\D>0 \\

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