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Helen [10]
3 years ago
15

Pls help! i hate math its so confusing! pics down below! happy valentines day btw <3

Mathematics
2 answers:
vekshin13 years ago
5 0

Answer:

-3x

Step-by-step explanation:

you have 3 boxes of -x

so: -x times 3 = -3x

Free_Kalibri [48]3 years ago
3 0

Answer:

the threee lines represent-3x

and happy valentines day<3

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A city of Punjab has a 15 percent chance of wet weather on any given day. What is the probability that it will take a week for i
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Answer:

a. 0.06166

b. 0.9447

Step-by-step explanation:

15 percent is the probability it will rain on any given day. P = 0.15

lets define x as the number of days it will rain in one week.

this solution will follow a binomial distribution.

p(X=x) = nCxP^x(1-p)^x

n = 7

x = 3

1-p = 0.85

p =0.15

inserting these values into the formula

p(X=3)=7C3(0.15)^3(0.85)^4

= 7!/4!3! × 0.003375 × 0.5220

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= 0.06166

sd = √np(1-p)

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3 years ago
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<h3>hello!</h3>

=============================================

First of all, let the number be u.

The product of 7 and u means you should multiply 7 times u:

\pmb{7u}

Now, subtract 4:

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\rule{200}{2}

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Now, divide both sides by 7:

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=======================================================

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