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Dvinal [7]
2 years ago
14

Find the zeros of the polynomial 12x^2+31x+20

Mathematics
1 answer:
alexdok [17]2 years ago
8 0

Answer:

-5/4; -4/3

Step-by-step explanation:

12x^2 + 31x + 20 =

(4x + 5)(3x + 4) -->

x = -5/4 OR -4/3

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the end of the road is 15/16 of a mile away. Luke walked 7/8 of a mile down the road. How much further did he need to walk
AURORKA [14]

Answer:

1/16 of a mile left to walk to reach the end of the road

Step-by-step explanation:

The total distance to be walked = 15/16 miles

already walked= 7/8 miles = 14/16 miles

15/16 - 14/16 = 1/16 miles

4 0
2 years ago
. Use the statistical features of your calculator to find the mean and the standard deviation to the nearest tenth of a data set
uysha [10]

Answer:

Mean = 1.9

Standard deviation = 0.6

Step-by-step explanation:

The Mean is calculate by the formula:

Mean = \frac{\text{Sum of all the observation}}{\text{Total number of observation}}

⇒ Mean = \frac{24.9+24.7+24.7+23.4+27.9}{5} = 1.85

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Standard Deviation is the square root of sum of square of the distance of observation from the mean.  

Standard deviation(\sigma) = \sqrt{\frac{1}{n}\sum_{i=1}^{n}{(x_{i}-\bar{x})^{2}} }

where, \bar{x} is mean of the distribution.

Putting all values in the formula, We get

Standard Deviation = 0.597 ≈ 0.6

6 0
3 years ago
YOU WILL GET BRAINLIEST!! 20 POINTS
Mariana [72]

Answer:

Step-by-step explanation:

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4 0
2 years ago
Read 2 more answers
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Aleksandr [31]

Answer:

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Step-by-step explanation:

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Step-by-step explanation:

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