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Phoenix [80]
3 years ago
6

An aircraft has a maximum of 30 first class seats and 220 economy seats.

Mathematics
1 answer:
Sidana [21]3 years ago
8 0

Answer:

x\leq 30

y\leq 220

240x+120y

Step-by-step explanation:

Let

x ----> the number of first class seats

y ----> the number of economy class seats

we know that

An aircraft has a maximum of 30 first class seats

so

x\leq 30

An aircraft has a maximum of 220 economy seats

y\leq 220

A flight will be cancelled if the money taken for the seats is less than $28,800.

so

240x+120y

therefore

Three inequalities that represent the situation are

x\leq 30

y\leq 220

240x+120y

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x times 2/25 equals 6
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2/25 times 25/2 equals one
6 times 25/2 equals 75
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Step-by-step explanation:

<em>→</em><em> </em><em>3</em><em>x</em><em> </em><em>+</em><em> </em><em>4</em><em> </em><em>=</em><em> </em><em>1</em><em>3</em>

<em>→</em><em> </em><em>3</em><em>x</em><em> </em><em>=</em><em> </em><em>1</em><em>3</em><em> </em><em>-</em><em> </em><em>4</em><em> </em><em>=</em><em> </em><em>9</em>

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<em>→</em><em> </em><em>x </em><em>=</em><em> </em><em>3</em>

<em>option</em><em> </em><em>B </em><em>is </em><em>correct</em>

<em>hope </em><em>this</em><em> answer</em><em> helps</em><em> you</em><em> dear</em><em>!</em><em> </em><em>take </em><em>care</em>

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Step-by-step explanation:

The one-way analysis of variance (ANOVA) is used "to determine whether there are any statistically significant differences between the means of two or more independent groups".

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If we assume that we have p groups and each gtoup have a size n_j then we have different sources of variation, the formulas related to the sum of squares are:

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A measure of total variation.

SS_{between}=\sum_{j=1}^{p} n_j (\bar x_{j}-\bar x)^2

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