3 years ago

HELP WILL GIVE BRAINLIEST

1 answer:

8 0

Answer:

Third option

Step-by-step explanation:

: ) Hope u will have a great day

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Usimov [2.4K]

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Step-by-step explanation:

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kvv77 [185]

Answer: $\bold{\dfrac{7}{8}=87.5\%}$

Step-by-step explanation:

"At least one girl" means P(1 girl) + P(2 girls) + P(3 girls) or 1 - P(all boys)

I will use the latter: 1 - P(all boys)

P(all boys) = $\dfrac{1}{2}\times \dfrac{1}{2}\times \dfrac{1}{2}=\dfrac{1}{8}$

$1 - P(all\ boys) \quad = \quad 1-\dfrac{1}{8}\quad =\large\boxed{\dfrac{7}{8}}$

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3 years ago

dexar [7]

$( \frac{1}{2} ) {}^{x - 5} = 8 {}^{x} \\ 2 {}^{ - x + 5} = 2 {}^{3x} \\ - x + 5 = 3x \\ - 4x = - 5 \\ x = \frac{ - 5}{ - 4} = \frac{5}{4}$

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kari74 [83]

He need to earn 48
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loris [4]

The answers are 5 x (80 x 7) and 80 fives plus 7 fives

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