3 years ago

Fill in the missing facts from the fact family3•3=9

Mathematics

1 answer:

Ivahew [28]3 years ago

7 0

3x3=9. 9÷3=3. is the fact family

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Step-by-step explanation:

4*8=32

6.5-1.8= 4.7

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elena-14-01-66 [18.8K]

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Step-by-step explanation:

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How do i simplify 3√96×√98

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3 years ago

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3 years ago

Scott is on his school's academic team. On average, it takes Scott 4 minutes, with a standard deviation of 0.25 minutes, to solv

uysha [10]

Answer:

15.87% is the chance that Scott takes more than 4.25 minutes to solve a problem at an academic bowl.

Step-by-step explanation:

We are given the following information in the question:

Mean, μ = 4 minutes

Standard Deviation, σ = 0.25 minutes

We standardize the given data.

Formula:

$z_{score} = \displaystyle\frac{x-\mu}{\sigma}$

P(more than 4.25 minutes to solve a problem)

$P( x > 4.25) = P( z > \displaystyle\frac{4.25 - 4}{0.25}) = P(z > 1)$

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Calculation the value from standard normal z table, we have,

$P(x > 4.25) = 1 - 0.8413 = 0.1587 = 15.87\%$

Thus,15.87% is the chance that Scott takes more than 4.25 minutes to solve a problem at an academic bowl.

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3 years ago