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solmaris [256]
3 years ago
11

Solve for a.

Mathematics
2 answers:
hjlf3 years ago
5 0

Step-by-step explanation:

for the first one multiply the equation by 5

5(-10)=5(1/5)a

-50=a

2.  3(n-8)=-12

divide the equation by 3

(3(n-8))/3=-12/3

(n-8)=-4

add 8 to both sides

n-8+8=-4+8

n=4

3.   8+4x=-16

subtract the whole equation by 8

-8+4x=-16-8

4x=-24

divide the equation by 4

4x/4=-24/4

x=-6

4. 4 chicken sandwiches at $2.50 each, to find the value of all the values for all 4 sandwiches is 4(2.50)=10

and since there is only one hamburger you just need to find the value for the one burger which is x.

4(2.50)+1(x)=14.30

10+x=14.30

subtract the equation by 10

10-10+x=14.30-10

x=4.30

Hope this helps :)

Sedaia [141]3 years ago
3 0

Answer:

thanks Thankyou for points ty ty

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Answer:  The perimeter of each book is:  " 36 in. " .

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Step-by-step explanation:

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Note that the given units are all in "inches (in.)" .

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This is based on the assumption that the book is shaped like a

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The formula for the Perimeter of a rectangle is:

  P = 2 L  + 2 w  ;

in which:

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Now, plug the given values for the "length (L)" and the "width (w)" ;

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