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emmainna [20.7K]
3 years ago
5

What is the answer to x^{2} + 2x + 15 = 0

Mathematics
1 answer:
babymother [125]3 years ago
8 0

From my knowledge:

²−2−15=0

x=5

x=-3

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What is 78.32+6.784?
IceJOKER [234]

Answer: 85.104

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After you do that, Do you see a black space next to the 14.5? When adding decimals this is a big nono. So what you can do is add a 0. Adding a zero is only applicable when you have one number that has 1 more number(its my best way to explain it).( so like you would add a zero if your equation was like 23.5 +18.99. but you wouldn't do it if it was 17.5+19.4).  Example equation should look like this:

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Step 2. Put the decimal down to where it lines up. Like this:

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Step 3. Add regularly. Just ignore the decimal in the equation and just add. The answer would be 30.24. If you don't know how to add, I don't think your old enough for a brainly account:)

Step 4. Remove the zero. Zero as a number means nothing. So its ok in math to add a zero at the end of a decimal. So 4.0 is the same as 4 or 4.0000000000000. So when you have another problem, and your answer is something like 95.320, you can just remove the zero. So it would be 95.32:)

Hope I Helped! (this took me a long time to type out)

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Answer:

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Now, we need to convert all the three hitting rates into same parameters to compare them with each other.

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Answer:

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