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bogdanovich [222]
3 years ago
9

Help it’s for my final most of my grade

Mathematics
1 answer:
Reptile [31]3 years ago
8 0

Answer:

B

Step-by-step explanation:

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each cow has 4 legs and each chicken has 2 legs. If a boy counts 42 heads and 144 feet, how many cows are there?
netineya [11]

Solution:

we are given that

Each cow has 4 legs and each chicken has 2 legs.

A boy counts 42 heads and 144 feet.

we have been asked to find how many cows are there?

Let there are x cows and y chicken.

Then we can write

x+y=42....(i)\\ \\ \text{Sum of Heads}\\ \\ 4x+2y=144\\ \\\\\text{Sum  of feet }\\ \\ \Rightarrow 2x+y=72....(ii)\\ \\ \text{Now solve these two equation together we get}\\ \\\\2x+(42-x)=72\\ \\ 2x+42-x=72\\ \\ x=72-42=30\\

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Hoochie [10]

Answer:

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Step-by-step explanation:

We need to find the value of x.

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So, the value of x is equal to 18.

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I need help pretty please :( :(​
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Step-by-step explanation:

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