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kenny6666 [7]
2 years ago
12

When Emily commutes to work, the amount of time it takes her to arrive is normally distributed with a mean of 25 minutes and a s

tandard deviation of 2.5 minutes. Out of the 203 days that Emily commutes to work per year, how many times would her cornmute be shorter than 21 minutes, to the nearest whole number?​
Mathematics
1 answer:
Dominik [7]2 years ago
5 0

Answer:

answer 298

Step-by-step explanation:

just focus your module brainless me

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One number is 6 more than another. The difference between their squares is 204. What are the numbers?
Crazy boy [7]

Answer:

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Step-by-step explanation:

<u><em> Let x and y be two numbers where x < y</em></u><em>.</em>

We are given :

y - x = 6

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Then

y - x = 6

(y - x)(y + x) = 204

Then

y - x = 6

6 × (y + x) = 204

then

y - x = 6       (Equation 1)

y + x = 34    (Equation 2)

Then

(Equation 1) + (Equation 2) ⇒ 2y = 40 ⇒ y = 20

Now ,we substitute y by 20 in equation 1 :

y - x = 6

⇔ 20 - x = 6

⇔ 20 - 6 = x

⇔ x = 14

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Aliun [14]

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Step-by-step explanation:

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