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3 years ago

12

Kat runs 3 1/2 miles in 3/4 of an hour. What is her unit rate? Use fractions to find out and express your answer as a mixed numb

er in miles per hour.
50 points!

2 answers:

Korolek [52]3 years ago

7 0

Awww man I read the question and I was like I know it because I did it in my head and was typing the answer and saw someone already typed a answer before me anyways it’s 12 miles per hour

Drupady [299]3 years ago

3 0

Answer:

This is a fraction equal to

30 miles ÷ 2.5 hours

We want a unit rate where

1 is in the denominator,

so we divide top and bottom by 2.5

30 miles ÷ 2.5

2.5 hours ÷ 2.5

=

12 miles

1 hour = 12 miles hour = 12 miles per hour

Step-by-step explanation:

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Answer:

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Step-by-step explanation:

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Answer:

The right answer is:

(a) 0.1456

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Step-by-step explanation:

Given:

N = 24

n = 5

r = 7

The improperly drilled gearboxes "X".

then,

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(a)

P (all gearboxes fit properly) = $P(x=0)$

= $\frac{\binom{7}{0} \binom{17}{5}}{\binom{24}{5}}$

= $0.1456$

(b)

According to the question,

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Mean will be:

⇒ $\mu = E(x)$

$=E(91+5)$

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Helen [10]

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