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alexgriva [62]
3 years ago
8

Alex and Leandro purchase two matinee movie tickets. A matinee ticket costs $6.50, a drink costs $5.50, and a bag of popcorn cos

ts $6.00. Define each variable and write an algebraic expression to describe how much they spend based on the number of drinks and bags of popcorn they buy. Identify the parts of the expression by underlining the coefficient(s), circling the constant(s), and drawing a box around the variable(s).
Mathematics
1 answer:
Montano1993 [528]3 years ago
5 0
Since they buy 2 $6.50 tickets, they already spend $13 without buying any popcorn or drinks.

For the expression, you can write-

$5.50d + $6.00p + $13 // d representing however many drinks they buy and p representing the amount of popcorn they buy.

This expression will give you the total amount of money spent with varying amounts of drinks and popcorn bought.
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Weights of Elephants A sample of 7 adult elephants had an average weight of 11,647 pounds. The standard deviation for the sample
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Answer:

The 95 % confidence interval of the population mean for the weights of adult elephants

(11,629.375 , 11,664.625) up to three decimals

Nearest whole number

(11,629 , 11,665)

Step-by-step explanation:

<u>Explanation</u>:-

A sample of 7 adult elephants had an average weight of 11,647 pounds

size of the sample 'n' =7

The mean of the sample x⁻ = 11,647 pounds

The standard deviation of the sample 'S' = 24 pounds

<u>Step(ii):</u>-

The 95 % confidence interval of the population mean for the weights of adult elephants

(x^{-} - t_{0.95} \frac{S}{\sqrt{n} } , x^{-} + t_{0.95} \frac{S}{\sqrt{n} } )

The degrees of freedom γ =n-1 = 7-1=6

t₆ = 1.943

(11,647 - 1.943 \frac{24}{\sqrt{7} } , 11,647 + 1.943 \frac{24}{\sqrt{7} } )

(11,647-17.625 , 11,647+17.625)

(11,629.375 , 11,664.625)

<u>Conclusion</u>:-

The 95 % confidence interval of the population mean for the weights of adult elephants

(11,629 , 11,665)

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When 6 is added to 3/4 of a number, the result is 4 less than the number
anastassius [24]

<em>Greetings from Brasil...</em>

According to the statement of the question, we can write the following equation:

<h2>3X/4 + 6 = X - 4</h2>

solving this equation

3X/4 + 6 = X - 4

3X/4 - X = - 4 - 6

4X - 3X = 40

<h2>X = 40</h2>

<em>refer to attached</em>

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I think is 0.14583 but I’m not sure
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Answer:

y =  - 10

Step-by-step explanation:

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