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azamat
2 years ago
14

What is j in the equation j divided -2 +7 = -12

Mathematics
2 answers:
WINSTONCH [101]2 years ago
4 0

Answer:

hope it helps uh..........

Aleonysh [2.5K]2 years ago
4 0

Answer:

38

Step-by-step explanation:

 j/(-2)+7=-12  

One solution was found :

                  j = 38

Reformatting the input :

Changes made to your input should not affect the solution:

(1): "/-2" was replaced by "/(-2)".

Rearrange:

Rearrange the equation by subtracting what is to the right of the equal sign from both sides of the equation :

                    j/(-2)+7-(-12)=0  

Step by step solution :

Step  1  :

            j

Simplify   ——

           -2

Equation at the end of step  1  :

   j          

 (—— +  7) -  -12  = 0  

  -2          

Step  2  :

Rewriting the whole as an Equivalent Fraction :

2.1   Adding a whole to a fraction

Rewrite the whole as a fraction using  -2  as the denominator :

        7     7 • -2

   7 =  —  =  ——————

        1       -2  

Equivalent fraction : The fraction thus generated looks different but has the same value as the whole

Common denominator : The equivalent fraction and the other fraction involved in the calculation share the same denominator

Adding fractions that have a common denominator :

2.2       Adding up the two equivalent fractions

Add the two equivalent fractions which now have a common denominator

Combine the numerators together, put the sum or difference over the common denominator then reduce to lowest terms if possible:

j • -1 + 7 • 2     14 - j

——————————————  =  ——————

      2              2    

Equation at the end of step  2  :

 (14 - j)    

 ———————— -  -12  = 0  

    2        

Step  3  :

Rewriting the whole as an Equivalent Fraction :

3.1   Subtracting a whole from a fraction

Rewrite the whole as a fraction using  2  as the denominator :

          -12     -12 • 2

   -12 =  ———  =  ———————

           1         2    

Adding fractions that have a common denominator :

3.2       Adding up the two equivalent fractions

(14-j) - (-12 • 2)     38 - j

——————————————————  =  ——————

        2                2    

Equation at the end of step  3  :

 38 - j

 ——————  = 0  

   2    

Step  4  :

When a fraction equals zero :

4.1    When a fraction equals zero ...

Where a fraction equals zero, its numerator, the part which is above the fraction line, must equal zero.

Now,to get rid of the denominator, Tiger multiplys both sides of the equation by the denominator.

Here's how:

 38-j

 ———— • 2 = 0 • 2

  2  

Now, on the left hand side, the  2  cancels out the denominator, while, on the right hand side, zero times anything is still zero.

The equation now takes the shape :

  38-j  = 0

Solving a Single Variable Equation :

4.2      Solve  :    -j+38 = 0  

Subtract  38  from both sides of the equation :  

                     -j = -38

Multiply both sides of the equation by (-1) :  j = 38

One solution was found :

                  j = 38

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Step-by-step explanation:

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Answer:

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Step-by-step explanation:

Given as :

Total number of questions in a test = 26

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Let The number of multiple choice questions = m

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<u>Now, According to question</u>

Total number of questions in a test = number of multiple choice questions +  number of essay questions

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Again

Total points for the 26 questions =  point for each multiple choice questions  ×  number of multiple choice questions + point for each essay questions × number of essay questions

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Solving the equation we get

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Step-by-step explanation:

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Answer:

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Step-by-step explanation:

The roots of f(x) are those values of x that make the factors be zero. For a factor of x-a, the root is x=a, because a-a=0. If the factor appears n times, then the root has multiplicity n.

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