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attashe74 [19]
3 years ago
14

What is the answer too X2-3X+5=0

Mathematics
1 answer:
ivolga24 [154]3 years ago
8 0
What is the solution (not answer) to (not too) x^2 - 3x + 5 = 0?
This is a quadratic equation.  Two possible approches to solving it are
1) quadratic formula, and
2) completing the square.

Let's use the quadratic formula:

a=1, b= -3, c = 5

Then 
       -(-3) plus or minus sqrt( [-3]^2 - 4(1)(5) )
x = --------------------------------------------------------
                                      2
        3 plus or minus sqrt(9-20)        3 plus or minus i*sqrt(11)
   = ------------------------------------- = ------------------------------------
                              2

Please note:  These are complex roots, due to the " i ".
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Step-by-step explanation:

x-c/d>y

d(x)-d(c/d)>d(y)

dx-cd-d^2>dy

dx>dy+cd+d^2

dx>d(y+c+d)

dx/d>d(y+c+d)/d

x>d(y+c+d)/d

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A braid was bought to put around a blanket that measures 23 inches by 24 inches.At $0.60 per yard how much was paid for the brai
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3 years ago
Find the solution for the equation y=4x-3
weqwewe [10]

Answer:

(-4,-19)

Step-by-step explanation:

Substitute the points into the equation and see if it is true

y = 4x-3

-3 = 4(4) -3

-3 = 16-3

-3 = 13  false

-19 = 4(-4) -3

-19 = -16-3

-19 -19   true

8 0
3 years ago
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A cyclist rides her bike at a rate of 2 meters per second. What is this rate in kilometers per hour? How many kilometers will th
Oksanka [162]

The speed v is 12 m/s.

 

You need to convert the seconds to hours  and meters to kilometers:

 

3600s = 1 hr

 

If you divide 3600 on both sides you will get

 

1 s = (1/3600) hr

 

 

1000m = 1 km

 

If you divide 1000 on both sides you will also get

 

1 m = (1/1000) km

 

 

v = [(12/1000) km] / [(1/3600) hr]

 

v = [(12*3600)/1000] km/hr

 

v = 216/5  km/hr

 

 

The distance in 4 hours is

 

d = [(216/5) km/hr] * 4hr

 

d = 864.50 km

This is why your answer should be 12 m/s

Hope this helps!! - Queenb369

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The answer is B 12.5%
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