Please solve this very easy Attachment!! Correctly please!
1 answer:
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Answer:
The standard deviation = 1.9
Step-by-step explanation:
standard deviation, ρ = sqrt ( )
Where u is the mean of the data, each given value, and N is the number of data given.
Mean, u =
= 5.2
So that;
=
= 0.64
=
= 0.04
=
= 10.24
=
= 0.04
=
= 7.84
Sum = 18.8
So that;
=
= 1.9391
= 1.9
The standard deviation of the given data is 1.9
Answer: 16a² + 15a + 9
Step-by-step explanation:
16a² + 15a + 9 = 0
Then plug into the quadratic formula which I attached.
a = -(15) ± √ (15)²- 4(16)(9) / 2(16)
a = -15 ± √225 - 576 / 32
a = -15 ± √-351 /32
a = -15 ± i√351 /32
*FYI: It is divide by 32
