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3 years ago

7

BRAINLY POINT CHALLENGE

1 answer:

elena-14-01-66 [18.8K]3 years ago

3 0

Answer:

90ft2

Step-by-step explanation:

rectangle= BH

Triangle= BH/2

add em together and you get you're answer

(B is base and H is height)

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The Magazine Mass Marketing Company has received 10 entries in its latest sweepstakes. They know that the probability of receivi

Serjik [45]

Answer:

P(X>4)= 0.624

Step-by-step explanation:

Given that

n = 10

p= 0.5 ,q= 1 - p = 0.5

Two fifth of 10 = 2/5 x 10 =4

It means that we have to find probability P(X>4).

P(X>4)= 1 -P(X=0)-P(X=1)-P(X=2)-P(X=3)-P(X=4)

We know that

$P(X=x)=(_{x}^{n})\ p^xq^{n-x}$

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$P(X=3)=(_{3}^{10})\ 0.5^3\ 0.5^{7}=0.117$

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P(X>4)= 1 -P(X=0)-P(X=1)-P(X=2)-P(X=3)-P(X=4)

P(X>4)= 1 -0.0009 - 0.0097 - 0.043 - 0.117-0.205

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