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Ket [755]
4 years ago
7

Solve for x.

Mathematics
1 answer:
Daniel [21]4 years ago
4 0

Answer:

x=-\frac{9}{4} \\ or \:\\x = -2\frac{1}{4}

Step-by-step explanation:

-2 (x + 1/4)+1=5\\\\-2\left(x+\frac{1}{4}\right)+1=5\\\\\mathrm{Subtract\:}1\mathrm{\:from\:both\:sides}\\\\-2\left(x+\frac{1}{4}\right)+1-1=5-1\\\\Simplify\\-2\left(x+\frac{1}{4}\right)=4\\\\\mathrm{Divide\:both\:sides\:by\:}-2\\\frac{-2\left(x+\frac{1}{4}\right)}{-2}=\frac{4}{-2}\\\\Simplify\\x+\frac{1}{4}=-2\\\\\mathrm{Subtract\:}\frac{1}{4}\mathrm{\:from\:both\:sides}\\\\x+\frac{1}{4}-\frac{1}{4}=-2-\frac{1}{4}\\\\Simplify\\x=-\frac{9}{4}\\\\x = -2\frac{1}{4}

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You have 72 grams of a radioactive kind of barium. If its half-life is 11 minutes, how much will be left after 22 minutes?
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3x(5x+2)(x-4)=0 what do the X's equal to
Lorico [155]

After solving the equation 3x(5x+2)(x-4)=0 we get values of x: x=-3, x=-2/5\,\,and\,\,x=4

Step-by-step explanation:

We need to find the value of x from the equation: 3x(5x+2)(x-4)=0

Solving the expression:

3x(5x+2)(x-4)=0

Using the Zero Factor Principle: if ab=0 then a=0 and b=0

So, 3x=0, 5x+2=0\,\,and\,\, x-4=0

x=-3, x=-2/5\,\,and\,\,x=4

So, After solving the equation 3x(5x+2)(x-4)=0 we get values of x: x=-3, x=-2/5\,\,and\,\,x=4

Keywords: Solving Equations

Learn more about Solving Equations at:

  • brainly.com/question/1563227
  • brainly.com/question/2403985
  • brainly.com/question/11229113

#learnwithBrainly

8 0
3 years ago
What is x? 6x-18+14x+38
evablogger [386]

Answer:

x= -1

Step-by-step explanation:

6x-18+14x+38

group= 20x+20

set equal to 0

20x+20=0

       -20  -20

20x/20= -20/20

x= -1

8 0
3 years ago
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