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seraphim [82]
3 years ago
6

URGE

Mathematics
1 answer:
lina2011 [118]3 years ago
7 0

Answer:

La probabilidad de que el estudiante entre, es 0.7

Entonces la probabilidad de que el estudiante no entre, es 1 - 0.7 = 0.3.

Ahora, si de 5 estudiantes, 3 entran y 2 no, entonces la probabilidad para un dado arreglo es: 0.7 tres veces, y 0.3 dos veces.

Y la probabilidad conjunta es igual al producto de las probabilidades individuales.

P = (0.7^3)(0.3^2)

Pero esto es para un arreglo, tenemos que tener en cuenta las permutaciones.

Sabemos que para M elementos, el numero de diferentes arreglos de N elementos (tal que N ≤ M) es:

C(M, N) = \frac{M!}{(M - N)!*N!}

En este caso, tenemos que M = 5 y N = 3, entonces tenemos:

C(5, 3) = \frac{5!}{2!*3!}  = 5*4/2 = 10

Entonces la probabilidad va a ser:

P = 10* (0.7^3)(0.3^2) = 0.3087

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Drag the tiles to the correct boxes to complete the pairs. Not all tiles will be used. Match each expression to its equivalent f
Stels [109]

Answer with explanation:

Two Quadratic expressions are said to be equivalent,if they have same zeroes.But here it has been asked about ,expression which are of the same form,means Instead of being congruent they should be similar.

   Expression                                            Equivalent Expression

1.  x²+ 3 x + 15   ----------------------                      x² + 6 x + 34

2. x² + 8            ---------------------                       x² + 16

3. x² - 5 x + 5         --------------                          x² -12 x + 37

8 0
3 years ago
2 points
saul85 [17]

Given:

Width of rectangular prism = 20 ft

height of rectangular prism = 12 ft

Length of rectangular prism = 45 ft

Cylindrical diameter = 20 ft

To find:

Volume of the tent

Solution:

Volume of the rectangular prism = length × width × height

                                                       = 45 × 20 × 12

Volume of the rectangular prism = 10800 ft³

Radius of cylinder = 20 ÷ 2 = 10 ft

Height of cylinder = length of rectangular prism

Volume of cylinder = \pi r^{2} h

Volume of half cylinder = \frac{1}{2} \pi r^2h

                                      $=\frac{1}{2} \times 3.142\times 10^2 \times45

Volume of half cylinder = 7069.5 ft³

Volume of tent = volume of rectangular prism + volume of half cylinder

                         = 10800 ft³ + 7069.5 ft³

                         = 17869.5 ft³

                         = 17869 ft³ (nearest cubic foot)

The volume of the tent is 17869 cubic feet.

6 0
3 years ago
Estimate the quotient of 1246 divided by 4
VladimirAG [237]

Answer:

623/2

Step-by-step explanation:

5 0
2 years ago
Read 2 more answers
Please solve...Thanks
liberstina [14]
Micheal has 40ft of fencing for the rectangular dog run. So the perimeter of the dog run is 40ft.

Perimeter=40ft

The perimeter of a rectangle is:

P=2l+2w

Since we know the length is 5 and the perimeter is 40, we can solve for the width.

P=2l+2w
40=2*(5)+2w
40=10+2w
subtract 10 from both sides
30=2w
divide both sides by 2
15=w

The width of the fence is 15feet.

3 0
3 years ago
Which pair of expressions are equivalent?
Zielflug [23.3K]

Answer:

second one

Step-by-step explanation:

Because when you try to remove the brackets then you should multiply coefficient of x and coefficient of y by 2

So it will be 2x+18y

2*9=18

4 0
2 years ago
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