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Step2247 [10]
3 years ago
5

When x=4 and y=−3, 5y+x2÷2

Mathematics
2 answers:
bixtya [17]3 years ago
8 0
-9 is the answer to this expression
expeople1 [14]3 years ago
5 0
-9 is the answer to this expression
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Please help!!! :( i will give brainliest answer
Rasek [7]

Answer:

D

Step-by-step explanation:

a triangles angles have to add up to 180 degrees

p.s.I hope this helps

4 0
2 years ago
HELP QUICKLY PLSSS!!!!!!!!!!<br><br> Evaluate square root -75s where s = -3
lord [1]

Answer:

15

Step-by-step explanation:

-75 x-3 is 225

Square root of 225 is 15

3 0
3 years ago
solo el 20% de los empleados de la población civil que está en una base militar restringida porta su identificación personal. Si
prisoha [69]

Usando la distribución binomial, hay una probabilidad de 0.8926 = 89.26% de que el guardia de seguridad encuentre al menos uno en la base militar restringida.

<h3>¿Qué es la distribución binomial?</h3>

P(X = x) = C_{n,x}.p^{x}.(1-p)^{n-x}

C_{n,x} = \frac{n!}{x!(n-x)!}

Los parámetros son:

  • n es el número de ensayos.
  • p es la probabilidad de éxito en un ensayo
  • x es el número de éxitos

En este problema, hay que:

  • 20% de los empleados de la población civil que está en una base militar restringida porta su identificación personal, o sea p = 0.2.
  • Llegan 10 empleados, o sea, n = 10.

La probabilidad de que el guardia de seguridad encuentre al menos uno en la base militar restringida es dada por:

P(X \geq 1) = 1 - P(X = 0)

En que:

P(X = x) = C_{n,x}.p^{x}.(1-p)^{n-x}

P(X = 0) = C_{10,0}.(0.2)^{0}.(0.8)^{10} = 0.1074

Por eso:

P(X \geq 1) = 1 - P(X = 0) = 1 - 0.1074 = 0.8926

Hay una probabilidad de 0.8926 = 89.26% de que el guardia de seguridad encuentre al menos uno en la base militar restringida.

Puede-se aprender más a cerca de la distribución binomial en brainly.com/question/25132113

3 0
3 years ago
Please I need help with this
Vera_Pavlovna [14]

Step-by-step explanation:

The x are the values that you have been given

6 0
3 years ago
Your parents decide to build a rectangular pool in your backyard. They determine that the length of the pool should be 15 feet l
damaskus [11]

Width = X

Length = X + 15

Perimeter of a Rectangle = 2W + 2L

2(X) + 2(X + 15)

2X + 2X + 30

4X + 30

Answer = 4X + 30

Hope this helps! :)

4 0
3 years ago
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