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m_a_m_a [10]
2 years ago
6

The product of negative 7 and a number squared is negative 28

Mathematics
1 answer:
sertanlavr [38]2 years ago
5 0

Answer:

2

Step-by-step explanation:

2^2=4

-7*4=-28

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Dima020 [189]

Answer:

Probability of having at least 4 Girls

= 0.6875

Step-by-step explanation:

Probability of having at least 4 Girls is 1-probability of having exactly 3 girls

Total number of children= 5 = N

Probability of having a girl p = 0.5

Probability of not having a girl q= 0.5

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Probability of at least 4 girls is given by

Probability= NCX(p)^x(q)^(N-x)

Probability = 5C3(0.5)^3(0.5)^(5-3)

Probability = 5C3(0.5)^3(0.5)^2

Probability= 5!/3!2!(0.5)^3(0.5)^2

Probability= 10(0.125)(0.25)

Probability= 0.3125

Probability of having at least 4 Girls

= 1- 0.3125

= 0.6875

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2 years ago
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nevsk [136]

Answer:

18

Step-by-step explanation:

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24^2 = 576

30^2 = 900

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the square root of 324 is 18

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1 year ago
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Answer:

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Step-by-step explanation:

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