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Korvikt [17]
3 years ago
11

How many ways can 4 people sit in a row of 7 ​chairs?

Mathematics
2 answers:
mafiozo [28]3 years ago
7 0
Four people can sit in a row of seven in three ways
Ghella [55]3 years ago
6 0

7\cdot6\cdot5\cdot4=840

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At a local preschool, there is a ratio of 3 boys to every 4 girls. If there are 245 total preschoolers enrolled, then how many a
Reika [66]

Set up the equation by writing the number of students in the ratio as a fraction:

3/4= (245-x)/x Cross multiply:

3x= 4(245-x) Multiply on right:

3x= 980-4x Add 4x on both sides:

7x= 980 Divide both sides by 7:

x= 140 this is how many girls there are. And:

245-140= 105= boys

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3 years ago
Reduce to simplest form.<br> -3/2 - 3/8
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3 years ago
A rental car company has noticed that the distribution of the number of miles customers put on rental cars per day is skewed to
kodGreya [7K]

Using the Central Limit Theorem, the correct option is:

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--------------------------

The Central Limit Theorem states that, for a normally distributed variable X, with mean \mu and standard deviation \sigma, the sample means of size m are approximated to a normal distribution with mean \mu and standard deviation s = \frac{\sigma}{\sqrt{n}}.

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A similar problem is given at brainly.com/question/23088374

5 0
2 years ago
Brian is a software salesman. His base salary is $2500 , and he makes an additional $50 for every copy of History is Fun he sell
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P = 50N + 2500 <== ur equation

for 23 copies...sub in 23 for N

P = 50(23) + 2500
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6 0
3 years ago
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