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Anna [14]
3 years ago
12

13. Solve 5x² - 6x + 1 = 0 using the quadratic formula. please help me and show work

Mathematics
1 answer:
yaroslaw [1]3 years ago
7 0

Answer: x= 1, \frac{1}{5\\}

Step-by-step explanation:

The quadratic equation is

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

and

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

So we just need to sub in the proper numbers from the equation given, in this case, it would result in

x=\frac{6+\sqrt{(-6)^{2}-4(5)(1) } }{2(5)}

and

x=\frac{6-\sqrt{(-6)^{2}-4(5)(1) } }{2(5)}

Once we get this we can either manually simplify or use a calculator, using a calculator would result in the answers

x= 1, \frac{1}{5\\}

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A​ country's people consume 6.36.3 billion pounds of candy​ (excluding chewing​ gum) per year. Express this quantity in terms of
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The correct question is
<span>A​ country's people consume 6.3 billion pounds of candy​ (excluding chewing​ gum) per year. Express this quantity in terms of pounds per person per month. Note that the population of the country is 301 million.

we know that
1 billion------------------> 1000000000 </span><span>(Thousand </span>Million)=1 x 10<span>^9
</span><span>then
</span>6.3 billion pounds--------------> 6.3 x 10^9 pounds
[pounds of candy per person per year]=[6.3 x 10^9 pounds]/[301 x 10^6]

[pounds of candy per person per year]=20.93 pounds per person per year

[pounds of candy per person per month]=20.93/12=1.74 pounds per person per month

the answer is 1.74 pounds per person per month

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Whats the greatest common factor of 13 and 26 .
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Someone just answer this math question thingie lol. you’ll get 33 points G
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1) (-2x+4)+(x-6) is simplified into =-x-2

2)  (uv-3)+(4uv+1)  is simplified into 5uv-2\\

3) (11x-8)-(2x+3) is simplified into -9x-11

4) (x^2-4)-(x-2) is simplified into x^2-x-2

5) (12-3t-7t^2)+(1+3t-t^2) is simplified into -8t^2+13

Step-by-step explanation:

We need to solve the polynomials.

1) (-2x+4)+(x-6)

Solving:

(-2x+4)+(x-6)\\=-2x+4+x-6\\Combining\,\,like\,\,terms:\\=-2x+x+4-6\\=-x-2

So, (-2x+4)+(x-6) is simplified into =-x-2

2) (uv-3)+(4uv+1)

Solving:

(uv-3)+(4uv+1)

Expanding:

=uv-3+4uv+1\\Combining\,\,like\,\,terms:\\=uv+4uv-3+1\\=5uv-2\\

So,  (uv-3)+(4uv+1)  is simplified into 5uv-2\\

3) (11x-8)-(2x+3)

Solving:

(11x-8)-(2x+3)

Expanding:

=11x-8-2x-3\\Combining\,\,like\,\,terms:\,\,\\=11x-2x-8-3\\=-9x-11

So, (11x-8)-(2x+3) is simplified into -9x-11

4) (x^2-4)-(x-2)

Solving:

(x^2-4)-(x-2)

Expanding:

=x^2-4-x+2\\Combining\,\,like\,\,terms:\\=x^2-x-4+2\\=x^2-x-2

SO, (x^2-4)-(x-2) is simplified into x^2-x-2

5) (12-3t-7t^2)+(1+3t-t^2)

Solving:

(12-3t-7t^2)+(1+3t-t^2)

Expanding:

=12-3t-7t^2+1+3t-t^2\\Combining\,\,like\,\,terms:\\=12+1-3t+3t-7t^2-t^2\\=13+0t-8t^2\\=-8t^2+13

So, (12-3t-7t^2)+(1+3t-t^2) is simplified into -8t^2+13

Keywords: Solving Polynomials

Learn more about solving Polynomials at:

  • brainly.com/question/12700460
  • brainly.com/question/1414350
  • brainly.com/question/4142886

#learnwithBrainly

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