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bearhunter [10]
2 years ago
13

Which is the correct form of the quadratic formula? A) x = b ± b2 - 4ac a B) x = b ± b2 - 4ac 2a C) x = - b ± b2 - 4ac a D) x =

- b ± b2 - 4ac 2a
Mathematics
1 answer:
ozzi2 years ago
5 0
Hello!

The quadratic formula is 

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

So the answer is D

Hope this helps!
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9x<-27 or 4x>36 solve for the compound inequality
pochemuha
9x < -27 or 4x > 36
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3 0
3 years ago
A burst of electromagnetic radiation has a frequency of 1 exahertz. One exahertz equals 10^12 megahertz. Each megahertz is equal
den301095 [7]

Answer:

The frequency of the burst of electromagnetic radiation which equals 1 exahertz = 10¹⁸ hertz.

Step-by-step explanation:

Since the frequency of the burst of electromagnetic radiation is 1 exahertz, and 1 exahertz = 10¹² megahertz. So, the frequency of radiation is 10¹² megahertz. Also 1 megahertz = 10⁶ hertz. So, 10¹² megahertz = 10¹² × 1 megahertz = 10¹² × 10⁶ hertz = 10¹² ⁺ ⁶ hertz = 10¹⁸ hertz.

So the frequency of the burst of electromagnetic radiation which equals 1 exahertz = 10¹⁸ hertz.

3 0
3 years ago
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Fiesta28 [93]

Answer:

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Step-by-step explanation:

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8 0
3 years ago
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Answer:

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Step-by-step explanation:

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These studies are usually randomized ie subjects are group by chance.

As opposed to observation studies, where the researchers only measures what was observed, seen or hear without any intervention on their parts.

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Step-by-step explanation:

I have this q rn. And this is what im using. hope this helps!

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