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anzhelika [568]
3 years ago
10

Using the quadratic formula to solve x2 35-x, what are the values of x?

Mathematics
1 answer:
Gala2k [10]3 years ago
8 0

Answer:

x = (-1 ± √21) / 2

The first choice

Step-by-step explanation:

x² = 5 - x

Put in standard form

x² + x - 5 = 0

Use quadratic equation

x = ( -b ± √( b² - 4ac) ) / (2a)

Plug in a = 1, b = 1 , c = -5

x = (-1 ± √( 1² - 4*1*(-5)) ) / 2

evaluate

x = (-1 ± √21) / 2

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Esther pays $532 per month for 6 years for a car. she made a down payment of $3,700. if the loan costs 7.1% per year compounded
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The amortization formula relates the principal and the loan payment by
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PLEASE HELP!! solve |2x-2| ≥6.
Anastaziya [24]
<h3>Answer:</h3>

x ≤ -2    OR  x ≥ 4

__________________________________________________________

<h3>Step-by-step explanation:</h3>

<u>We are given the inequality:</u>

|2x - 2| ≥ 6

Getting rid of the Modulus:

Since 2x-2 is in modulus:

|2x-2| =  -(2x-2)    OR   2x-2

<em>(since the modulus of both these values is 2x-2)</em>

Hence, our inequality can be written in 2 different ways:

  1. 2x-2 ≥ 6                              <em>(if 2x-2 ≥ 1)</em>
  2. -(2x - 2) ≥ 6                         <em>(if 2x-2 < 0)</em>

__________________________________________________________

<u>Solving these 2 inequalities:</u>

Solving inequality 1:

2x - 2 ≥ 6                

2x ≥ 8                     [<em>adding 2 on both sides]</em>

x ≥ 4                       [<em>dividing both the sides by 2]</em>

This is the solution of the inequality if: 2x-2 ≥ 0

Solving Inequality 2:

-(2x-2) ≥ 6

<em>It can be rewritten as:</em>

2 - 2x ≥ 6                

2 ≥ 6 + 2x                [<em>adding 2x on both the sides]</em>  

-4 ≥ 2x                     [<em>Subtracting 6 from both sides]</em>

x ≤ -2                       [<em>Dividing both sides by 2]</em>

This is the solution of the given inequality if: 2x-2 < 0

__________________________________________________________

<u>Solution of the given Inequality:</u>

Therefore, the solution of the given inequality |2x-2| ≥ 6 are:

x ≥ 4   <em>(if 2x-2 </em>≥ 0)

x ≤ -2  <em>(if 2x-2 < 0)</em>

Hence, option C is correct!

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Answer:

Step-by-step explanation:

It’s a cube with edge length of 12 cm.

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