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taurus [48]
3 years ago
15

I am so confused please help

Mathematics
2 answers:
Lemur [1.5K]3 years ago
6 0

Answer:

a. 2\sqrt{31}

b. 3

c.  3\sqrt{5}

d. 2\sqrt{3}

Step-by-step explanation:

This is a simple quadratic formula "substitution".

Essentially what you do is replace the "b" in the formula given above, with a "b" value from your given choices, same goes for "a" and "c" values.

You replace them and then solve the quadratic formula equation.

Ex. For the first set of values in your question, you make the formula into:

\sqrt{2^2-4(5)(-6) And there you would solve normally.

2 squared is 4, so you get 4 - [4 * 5 * -6]

Which after solving leaves you with: \sqrt{2^2+124}

Then you do Prime Factorization of 124, leaving you with: \sqrt{2^2*31}

Then you apply the radical rule, leaving you with: 2\sqrt{31}

Marysya12 [62]3 years ago
3 0

Step-by-step explanation:

This is a simple quadratic formula "substitution".

Essentially what you do is replace the "b" in the formula given above, with a "b" value from your given choices, same goes for "a" and "c" values.

You replace them and then solve the quadratic formula equation.

Ex. For the first set of values in your question, you make the formula into:

And there you would solve normally.

2 squared is 4, so you get 4 - [4 * 5 * -6]

Which after solving leaves you with:

Then you do Prime Factorization of 124, leaving you with:

Then you apply the radical rule, leaving you with:

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Mademuasel [1]

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Step-by-step explanation:

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3 years ago
Scientists found the wreck of the titanic 3797 m below sea level. How many km below sea level is the wreck?
WINSTONCH [101]

We are given that the titanic is found 3,797 m below sea level. This is simply equivalent to 3.797 km or 3.8 km when rounded off to one decimal.

We should take note that the letter k in km means kilo and a kilo is equivalent to 1000. So this means that for 1 km there is exactly 1000 m. So to convert, simply multiply a value with unit m with this conversion factor. Conversion factor = 1 km / 1000 m

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