Hello I need an answer and explanation (step by step)

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Hello I need an answer and explanation (step by step) to solve this
question: Question, Sally is having a problem with her puppy leaving the yard so she decides to build a new fence. The length of the rectangular yard is 4 feet more than 6 times the width. She needs 78 feet of fencing to do the job . Find the length of the yard.

Thanks

 
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Hello I need the answer and step by step explanation

/in /by

Hello I need the answer and step by step explanation on how to solve
this question: The perimeter of a triangle with two equal sides is 46 cm. if its base were lengthened by 3 cm and each leg were shortened by 5 cm, all three sides would be equal. Find the length of the base of the original triangle.

Thanks

 
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Hello I need an answer and explanation on how to solve this question:

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Hello I need an answer and explanation on how to solve this question:
A merchant has coffee worth $60 a pound that she wishes to mix with 70 pounds of coffee worth $90 a pound to get a mixture that she will sell for $70 a pound. How many pounds (ib) of the $60 coffee should be used.

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Hello, this question is really confusing, can you solve and explain

/in /by

Hello, this question is really confusing, can you solve and explain
it to me? Question: One number is 1 less than a second number. Twice the second number is 20 less than 4 times the first. Find the smaller of the two numbers.

Thanks

 
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