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siniylev [52]
3 years ago
12

What is the solution to 3/4(x+8)>1/2(2x+10)

Mathematics
1 answer:
Kryger [21]3 years ago
4 0

Answer:

3/4(x+8)=1/2(2x+10)  

One solution was found :

x = 4

Rearrange:

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

3/4*(x+8)-(1/2*(2*x+10))=0  

Step by step solution:

Step  1  :

           1

Simplify   —

           2

Equation at the end of step  1  :

  3                1

 (— • (x + 8)) -  (— • (2x + 10))  = 0  

  4                2

Step  2  :

Step  3  :

Pulling out like terms :

3.1     Pull out like factors :

  2x + 10  =   2 • (x + 5)  

Equation at the end of step  3  :

  3                

 (— • (x + 8)) -  (x + 5)  = 0  

  4                

Step  4  :

           3

Simplify   —

           4

Equation at the end of step  4  :

  3                

 (— • (x + 8)) -  (x + 5)  = 0  

  4                

Step  5  :

Equation at the end of step  5  :

 3 • (x + 8)    

 ——————————— -  (x + 5)  = 0  

      4          

Step  6  :

Rewriting the whole as an Equivalent Fraction :

6.1   Subtracting a whole from a fraction

Rewrite the whole as a fraction using  4  as the denominator :

            x + 5     (x + 5) • 4

   x + 5 =  —————  =  ———————————

              1            4      

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 :

6.2       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:

3 • (x+8) - ((x+5) • 4)     4 - x

———————————————————————  =  —————

           4                  4  

Equation at the end of step  6  :

 4 - x

 —————  = 0  

   4  

Step  7  :

When a fraction equals zero :

7.1    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:

 4-x

 ——— • 4 = 0 • 4

  4  

Now, on the left hand side, the  4  cancels out the denominator, while, on the right hand side, zero times anything is still zero.

The equation now takes the shape :

  4-x  = 0

Solving a Single Variable Equation :

7.2      Solve  :    -x+4 = 0  

Subtract  4  from both sides of the equation :  

                     -x = -4

Multiply both sides of the equation by (-1) :  x = 4

One solution was found :

                  x = 4

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in 2 h, kelly laid new floor tile over 1/5 of the room. when she was joined by annette, the rest of the work was completed in 3h
jeyben [28]

Answer: Annette will take 6 hours to do the entire job alone.

Step-by-step explanation:

Given: Time taken by Kelly to do \dfrac{1}{5} of job = 2 hours

i.e. Time for complete job done alone by Kelly =5\times2=10\ hours

Rest of work = 1-\dfrac{1}{5}=\dfrac{4}{5} of the job

\dfrac{4}{5}  of the complete job done by both Kelly and Annette in 3 hours

Time would be taken by then to do entire job together = 3\times\dfrac{5}{4}=3.75\ hours

Let t be the time taken by Annette to do job alone.

Then, as per situation

\dfrac{1}{3.75}=\dfrac{1}{10}+\dfrac{1}{t}\\\\\Rightarrow\ \dfrac{1}{t}=\dfrac{1}{3.75}-\dfrac{1}{10}\\\\\Rightarrow\ \dfrac{1}{t}=\dfrac{4}{15}-\dfrac{1}{10}\\\\\Rightarrow\ \dfrac{1}{t}=\dfrac{1}{6}\\\\\Rightarrow\ t=6

hence, Annette will take 6 hours to do the entire job alone.

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The owner of the Rancho Grande has 3,044 yd of fencing with which to enclose a rectangular piece of grazing land situated along
inysia [295]

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Step-by-step explanation:

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x is the length

y is the width

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Given

Perimeter = 3044yds

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1522 = x+y

x = 1522-y

Substitute into the formula for area

A = xy

A = (1522-y)y

A = 1522y-y²

To maximize the area, dA/dy must be zero

dA/dy = 1522-2y

0 = 1522-2y

2y = 1522

y = 1522/2

y = 761

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X+761 = 1522

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