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alexandr1967 [171]
3 years ago
12

Use the quadratic formula to find the solutions to the equation x^2-3x+1=0

Mathematics
1 answer:
Gnom [1K]3 years ago
4 0

Answer:

x_{1}=\frac{+3+\sqrt{5} }{2}\\\\x_{2}=\frac{+3-\sqrt{5} }{2}

Step-by-step explanation:

Using:

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

we will have two solutions.

x^2-3x+1=0

So, a=1   b=-3  c=1

x_{1}=\frac{+3+\sqrt{-3^{2}-4*1*1} }{2*1}\\\\x_{2}=\frac{+3-\sqrt{-3^{2}-4*1*1} }{2*1}

We have two solutions:

x_{1}=\frac{+3+\sqrt{5} }{2}\\\\x_{2}=\frac{+3-\sqrt{5} }{2}

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ruth had a ribbon that was 9 yards long. she cut the ribbon into pieces that were 1/6 yard long. how many pieces of ribbon does
Ainat [17]

Answer:

54

Step-by-step explanation:

6            x       9         =         54

she can      there are

make 6       9 yards

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4 0
3 years ago
What is the distance between the points (-4, 2) and (1, -3) on the coordinate plane?
ruslelena [56]

Answer:

A. 7.07 units

Step-by-step explanation:

Use the distance formula for coordinates:

d=\sqrt{(x_{2}-x_{1})^2 +(y_{2}-y_{1})^2   }

Fill in the coordinates accordingly:

d=\sqrt{(1-(-4))^2+(-3-2)^2}

which simplifies down to

d=\sqrt{25+25}

which is of course

d=\sqrt{50}

Plug that into your calculator and you'll get the answer

4 0
3 years ago
Please help!
Tcecarenko [31]

1. -1/3 - (-1/2) = .16666666666666

2. -8

Hope it helps, if you need it in fractions, you can always convert it :)


8 0
3 years ago
Read 2 more answers
A = 78', b = 12.3, c = 20.2
nasty-shy [4]

Answer:

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5 0
2 years ago
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Ten pieces of paper numbered consecutively from 1 to 10 are put into a hat. if three pieces of paper are drawn at random from th
DaniilM [7]

There are 5 even numbers from 1 to 10.


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Therefore the probability is 10/128 = 5/64 or roughly 7.81%

7 0
3 years ago
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