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swat32
2 years ago
14

Find the inverse of 6x^2-7

Mathematics
2 answers:
topjm [15]2 years ago
8 0

Answer:

y = \pm \sqrt{\dfrac{x - 7}{6}}

Step-by-step explanation:

f(x) = 6x² - 7

y = 6x² - 7

x = 6y² - 7

6y² = x - 7

y^2 = \dfrac{x - 7}{6}

y = \pm \sqrt{\dfrac{x - 7}{6}}

valina [46]2 years ago
6 0
This would be the correct answer

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A rectangle has the sum of length and breadth 20 cm. find the perimeter.​
kupik [55]
<h2>Answer:</h2>

40 cm.

<h2>Step-by-step explanation:</h2>

Because=(long+width)\times 2=perimeter

50:the\ perimeter=20\times 2=40\ cm

<em>I hope this helps you</em>

<em>:)</em>

4 0
2 years ago
You have $44000 in a savings account that pays 2% annual interestand the inflatation rate is 3.24%. How much buying power in dol
puteri [66]
At the end of the year ...
   the price will be 44,000*1.0324 = 45,425.60
   the bank balance will be 44,000*1.02 = 44,880.00

This is 545.60 fewer dollars than required to pay the price.

You lose $545.60 in current-year buying power.
4 0
3 years ago
What is the value of x in the solution to the system of linear equations?
xenn [34]
Since y=x-4 you would simply just plug that into 'y' on the other equation, given: x-4=3x+2.
Subtract x from both sides, it will leave you with -4=2x+2.
Next you would subtract 2 from both sides, leaving you with -6=2x.
All you need now is to get rid of the coefficient in front of 'x' so you divide both sides with 2, leaving you with your answer: -3=x.

Answer: -3=x

Hope this helps!
6 0
3 years ago
Read 2 more answers
4. Elena va a una fiesta pero no sabe que ponerse, así que lanza un moneda y un dado al
taurus [48]

Answer:

  • <u>1/4</u>

Explanation:

Hola. Puesto que tu pregunta está en español, te responderé en el mismo lenguage.

Estas son las posibilidades dadas por la combinación moneda/dado

                                      Número de combinaciones

Moneda: prenda

    Cara: vestido                 1 de 2:          1/2

     Sello: falda                    1 de 2:          1/2

Dado: color

    Par: negro                      3 de 6:          3/6

    Impar: café                     3 de 6:         3/6

En total son 2 × 6 resultados: 12 (incluye resultados repetidos, no son todos diferentes entre sí)

¿Cuántas combinaciones tienen vestido y color negro?

  • P(Vestido∩negro) = ?

Es decir: moneda = cara y dado = par

  • Son 1 × 3 = 3.

Por tanto, la probabilidad de vestido negro es:

  • 3 de 12 = 3/12 = 1/4 ← respuesta

Hay otras formas de resolverlo. Por ejemplo;

Como los resultados de lanzar la moneda y el dado son independientes:

  • P(Vestido∩negro) = P(Vestido) × P(Negro)
  • P(Vestido) = 1/2
  • P(Negro) = 3/6 = 1/2
  • P(Vestido) × P(Negro) = 1/2 × 1/2 = 1/4 ← mismo resultado
8 0
3 years ago
Evaluate f(x)=7x+7 when x=-9
stealth61 [152]

Answer:

-56

Step-by-step explanation:

f(x) = 7x + 7

x = -9

We meed to plug in x = -9 into the first equation:

f(-9) = 7(-9) + 7

We can open up the parentheses:

f(-9) = -63 + 7

And then simplify:

f(-9) = -56

7 0
3 years ago
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