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3 years ago

An unfair coin with .4 probability of tails is flipped 7 times what is the probability of obtaining exactly 5 heads

Mathematics

1 answer:

steposvetlana [31]3 years ago

5 0

P(heads) = 1 - 0.4 = 0.6 $P(5\ heads)=7C5\times0.6^{5}\times0.4^{2}=0.2613$
The answer is 0.26 to 2 d.p.

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8) The diagram shows a sector of the circle with radius 60 cm and the angle at the

SashulF [63]

Answer:

251.3274cm

Step-by-step explanation:

L / 240 = C / 2π

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3 years ago

How do you solve equations that contain like terms

trasher [3.6K]

You add or subtract it for instance: 14x+258-52. You have to subtract 52 from 258 because of the symbol (-) in front of it. Since there is no other numbers with variables 14x is left alone. Hope this helps

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4 years ago

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Write the equation in vertex form of the parabola with the vertex (-4,-4) that goes through the point (-2,-16)

Brrunno [24]

Answer:

$- 3(x + 4) {}^{2} - 4$

Step-by-step explanation:

Vertex form is

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We know that h and k are both -4. Let x be -2 and y be -16.

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$a(2) {}^{2} - 4 = - 16$

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3 years ago

Quotient and remainder of 32 and 6

kirill115 [55]

I think that it is four

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3 years ago

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F is between E and G. EF=3X, EG= 11x-2, FG= 5x+16. Find the value of the variable

Salsk061 [2.6K]

9514 1404 393

Answer:

x = 6

Step-by-step explanation:

The sum of segments is used:

EF +FG = EG

3x +(5x +16) = 11x -2 . . . . substitute given expressions

8x +18 = 11x . . . . . . . . add 2

18 = 3x . . . . . . . . subtract 8x

6 = x . . . . . . divide by 3

The value of the variable is 6.

<em>Check</em>

The segment lengths are ...

EF = 3x = 3·6 = 18

FG = 5x+16 = 5·6 +16 = 46

EG = 11x -2 = 11·6 -2 = 64 = 18+46 . . . answer is correct

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3 years ago