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chubhunter [2.5K]
3 years ago
5

Evaluate each expression of (2.6)+(8-4)+1

Mathematics
1 answer:
lianna [129]3 years ago
7 0
Simplify 13/5

\boxed{ \frac{13}{5} +4)+1}}

\boxed{\boxed{\bf{ \frac{33+5}{5} = \frac{38}{5}  }}} or 7.6000


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2.- Supóngase que los diámetros de los tornillos fabricados por una compañía están distribuidos normalmente con una media de 0.2
Sergio [31]

Answer:

7.30167%

Step-by-step explanation:

Usando la fórmula de puntuación z

z = (x-μ) / σ, donde x es la puntuación bruta, μ es la media de la población y σ es la desviación estándar de la población

Para x <0.20 pulgadas

z = 0.20 - 0.25 / 0.02

z = -2.5

Valor de probabilidad de Z-Table:

P (x <0.20) = 0.0062097

Para x> 0.28 pulgadas

z = 0.28 - 0.20 / 0.02

z = 1.5

Valor de probabilidad de Z-Table:

P (x <0.28) = 0.93319

P (x> 0.28) = 1 - P (x <0.28) = 0.066807

La probabilidad de que se produzcan tornillos defectuosos cuando el tornillo se considera defectuoso si su diámetro es inferior a 0.20 pulgadas o superior a 0.28 pulgadas es

P (x <0.20) + P (x> 0.28)

= 0.0062097 + 0.066807

= 0.0730167

Conversión a porcentaje

= 0.0730167 × 100

= 7.30167%

El porcentaje de tornillos defectuosos producidos es

7.30167%

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2 years ago
Eileen randomly chooses 15 seeds from the bag of flower seeds she has left over from last year, and 10 seeds from the bag she bo
amm1812
I believe it is D, stratified random sampling.
Hope this helps!!

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3 years ago
Read 2 more answers
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I think the perimeter is 64. If you divided the 4 sides of the window by 256, you get 64. Sorry if it's not right. I hope it is. c;

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e

Step-by-step explanation:

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15. Find the length of x. Round to 1 decimal place.
BabaBlast [244]
15/x = 5/11

5x = 165

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3 years ago
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