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frutty [35]
4 years ago
12

How do you solve this? -x+y=7 6x+y=14

Mathematics
1 answer:
eduard4 years ago
5 0
Multiply the first equation by -1 to use elimination method.

x-y=-7
6x+y=14

7x=7
x=1

Plug this x value in.

-1+y=7
y=8

Final answer: (1,8)
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Determine the equation of the line shown in the graph:
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Whats the answer for this 14=-(p-8)
Paraphin [41]

Answer:  " p = - 6 " .

___________________________________

Step-by-step explanation:

___________________________________

Given:  14 = - (p - 8) ;  Solve for "p" ;

Rewrite as:

↔  - (p - 8) = 14 ;  

which is the same as:

-1(p - 8) = 14 ; ;

Divide each side by "-1" ; to get rid of the "-1" ;

{-1(p - 8) } / -1 = {14} / -1 ;

to get:

 (p - 8) = -14 ;

Rewrite as:

 p - 8 = -14 ;

Now add "8" to each side of the equation;

   to isolate "p" on one side of the equation; & to solve for "p" :

  p - 8 + 8 = -14 + 8  ;

to get:

  p  = - 6 ;

which is the answer:

___________________________________

 p  = - 6  .

___________________________________

Now, let us check our answer:

___________________________________

Given:   14 = - (p - 8) ;

Substitute our solved value:  "-6" ; for "p" ; to see if the equation holds true:

___________________________________

14 = - (p - 8)  ;

14 =? -(-6 - 8) ;

14 =? -(-14) ;

14 =? + 14 ?  Yes!

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Hope this answer and explanation is helpful to you!

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Answer:

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There are a total of 12 marbles, so the denominator is 12.

Since the only non-yellow-or-blue marble color is orange, that is the desired result. There are 7 orange marbles, so the numerator is 7.

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