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Fudgin [204]
3 years ago
5

HELP PICTURE IS SHOWN

Mathematics
1 answer:
Y_Kistochka [10]3 years ago
5 0
The perimeter of the shape shown is 63 units
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Encontrar la Esperanza Matemática y Desviación Estándar del número de imperfecciones (y) en pizarra acrílica. (2 puntos) y 0 1 2
fredd [130]

Responder:

1,625; 0.8569

Explicación paso a paso:

y ___0 ____ 1 ____ 2 ____3

P (y) _1 / 8 ___ ¼ ___ ½ ____ 1/8

Valor esperado (E (x)): Σx * p (x)

= (0 * (1/8)) + (1 * (1/4)) + (2 * (1/2)) + (3 * (1/8)) = 1,625

La desviación estándar = sqrt (Var (x))

Var (X) = Σx²p (x) * E (x) ²

Var (X) = [(0 ^ 2 * (1/8)) + (1 ^ 2 * (1/4)) + (2 ^ 2 * (1/2)) + (3 ^ 2 * (1 / 8))] - 1.625²

Var (X) = (0 * (1/8)) + (1 * (1/4)) + (4 * (1/2)) + (9 * (1/8)) - 1.625 ^ 2

= 3.375 - 2.640625

= 0,734375

Desviación estándar = Sqrt (0,734375) = 0,8569

7 0
2 years ago
Eddie Foster packs and seals pens at rate of $0.235 per pack. At the end of his eight-hour
uysha [10]

Answer:

$112.80

Step-by-step explanation:

If he earns $0.235 per pack, and there are 480 packs, then our equation is:

0.235 x 480 = $112.80

5 0
3 years ago
PLSSSSSSSSSSSSSSSSSSSSSS HELP
jek_recluse [69]
2a + 3b, 6ab, And 2b + 3a
5 0
3 years ago
Read 2 more answers
Lena bought 10 pounds of potatoes for $5.50 write the cost as cents per pound
MariettaO [177]
<span>10 pounds of potatoes for $5.50
one pound = $5.50 / 10 = $0.55

answer

it cost 55 cents per pound</span>
5 0
3 years ago
Read 2 more answers
PLEASE HELP!!!!!!!
r-ruslan [8.4K]

Answer:

50 degrees

Step-by-step explanation:

3 x 6 = 18

56 - 18 = 38

38 + 12 = 50

8 0
3 years ago
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