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Natali5045456 [20]
3 years ago
11

The quadratic equation using the quadratic formula

Mathematics
2 answers:
notka56 [123]3 years ago
8 0
The quadratic formula:

x =  \frac{-b+ \sqrt{b^2-4ac} }{2a}

(except + symbol at top is plus/minus.)
worty [1.4K]3 years ago
3 0

Answer:

X^2 + 2x = 6

Step-by-step explanation:

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Margaret has $200 in her savings account. She will save $50 more dollars each week and not take any money out of the account. Wh
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They want me to put something here and the question is the picture
arsen [322]

Answer:

D. (1, -2)

General Formulas and Concepts:

<u>Pre-Algebra</u>

  • Order of Operations: BPEMDAS
  • Equality Properties

<u>Algebra I</u>

  • Solving systems of equations using substitution/elimination

Step-by-step explanation:

<u>Step 1: Define systems</u>

5x - 2y = 9

3x + 4y = -5

<u>Step 2: Rewrite systems</u>

10x - 4y = 18

3x + 4y = -5

<u>Step 3: Solve for </u><em><u>x</u></em>

  1. Add to equations together:                    13x = 13
  2. Divide 13 on both sides:                          x = 1

<u>Step 4: Solve for </u><em><u>y</u></em>

  1. Define:                              3x + 4y = -5
  2. Substitute in <em>x</em>:                 3(1) + 4y = -5
  3. Multiply:                            3 + 4y = -5
  4. Isolate <em>y </em>term:                  4y = -8
  5. Isolate <em>y</em>:                           y = -2

And we have our final answer!

8 0
3 years ago
What is the solution to x + 7 = 23?
Aloiza [94]

Answer:

x=16

Step-by-step explanation:

x+7=23

23-7=x

x=16

5 0
3 years ago
Please help me to solve this ∫ 1/(x + √x) dx
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Answer:

\boxed{2ln (\sqrt{x}  + 1 ) + c}

Step-by-step explanation:

\int\limits {\frac{1}{x + \sqrt{x} } } \, dx

= \int\limits {\frac{1}{\sqrt{x} (\sqrt{x}  + 1 )} } \, dx

= \int\limits {\frac{2}{(\sqrt{x}  + 1 )} } \, d(\sqrt{x}  + 1 )

= 2ln (\sqrt{x}  + 1 ) + c

6 0
3 years ago
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