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slava [35]
2 years ago
7

30 PTS!! URGENT JUST 3 QUESTIONS PLEASE

Mathematics
1 answer:
Harrizon [31]2 years ago
4 0

Answer:

1. 7    

2. B

3. C

Step-by-step explanation:

hope its right

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A farmhouse shelters 16 animals, some are pigs, and some are ducks. Altogether there are 42 legs. How many pigs are there?
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Answer:

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Step-by-step explanation:

A farmhouse shelters 16 animals, some are pigs, and some are ducks. Altogether there are 42 legs. How many pigs are there?

Let us represent:

Number of pigs = x

Number of ducks = y

Our system of equations is given as:

A farmhouse shelters 16 animals, some are pigs, and some are ducks.

x + y = 16...... Equation 1

x = 16 - y

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Ducks have 2 legs(feet) , pigs have 4 legs,

4x + 2y = 42..... Equation 2

We substitute

16 - y for x in Equation 2

Hence:

4(16 - y) + 2y = 42

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Collect like terms

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y = -22/-2

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Solving for x.

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x = 16 - 11

x = 5 pigs

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Step-by-step explanation:

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