3 years ago

Please help me I need help I have no idea what is this

Mathematics

1 answer:

balandron [24]3 years ago

7 0

Answer:

523

Step-by-step explanation:

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What decimal is equilvalent to 3/8

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Answer:

0.375

Step-by-step explanation:

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3 years ago

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Round 479.8983 to the nearest whole number:

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The answer to your question is 480

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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

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

<u>Separate the solutions</u>

$k_1 = \frac{ - 5 + 3 \sqrt{3} \: i }{2} \: \: \: \: or \\ k_2 = \frac{ - 5 - 3 \sqrt{3} \: i}{2}$

The equation has complex roots

<u>Separate the real and imaginary parts</u>

We have the final answer as

$k_1 = - \frac{5}{2} + \frac{3 \sqrt{3} }{2} \: i \: \: \: \: or \\ k_2 = - \frac{5}{2} - \frac{3 \sqrt{3} }{2} \: i$

Hope this helps you

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2 years ago

On a hiking trip LaShana notes that she hiked about 12 kilometers every 4 hours. If she continues at this rate' how many kilomet

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18 Kilometers

Step-by-step explanation:

If you divide 12 by 4 you get 3, so she is going about 3 kilometers an hour. Add 3 for each hour, and you get 18 kilometers in 6 hours.

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3 years ago

A company designs T-shirts. They charge $40 for set-up cost plus $12 per shirt. write the slope intercept form.

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Step-by-step explanation:

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