3 years ago

Don't just guess if you don't know. I need the exact answer please

Mathematics

2 answers:

Arada [10]3 years ago

6 0

You should learn how to do this

20.5

kiruha [24]3 years ago

4 0

It would be 20.3 because if you put the numbers in order from least to greatest then you have to find the middle number and since their are 2 of them you add then divide by 2

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3 years ago

Solve the equation: k^2+5k+13=0

mr_godi [17]

Step-by-step explanation:

k² + 5k + 13 = 0

Using the quadratic formula which is

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

From the question

a = 1 , b = 5 , c = 13

So we have

$k = \frac{ - 5 \pm \sqrt{ {5}^{2} - 4(1)(13) } }{2(1)} \\ = \frac{ - 5 \pm \sqrt{25 - 52} }{2} \\ = \frac{ - 5 \pm \sqrt{ - 27} }{2} \: \: \: \: \: \: \\ = \frac{ - 5 \pm3 \sqrt{3} \: i}{2} \: \: \: \: \: \:$