Answer:
1. ![27x^{2} -78x+16](https://tex.z-dn.net/?f=27x%5E%7B2%7D%20-78x%2B16)
2. not completely sure but i think its ![x= -2 + 3i](https://tex.z-dn.net/?f=x%3D%20-2%20%2B%203i)
3.x
=
2
i
√
5
,
−
2
i
√
5
4.x
=
−
9
±
√
73
/2
5. Im not sure...
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The answer is X>-7 for your question
The answer is between $175 and $295. The standard deviation rule tells us that for distributions that have the normal shape, approximately 99.7% of the observations fall within 3 standard deviations of the mean. Indeed, 175 = 235 − 3 * 20 and 295 = 235 + 3 * 20 are exactly 3 standard deviations below and above the mean, respectively.
Answer:
True
Step-by-step explanation:
Some of our energy comes from electrical power plants