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solong [7]
4 years ago
15

Write the system of inequalities Carlos works at a movie theater selling tickets. The theater has 300 seats and charges $7.50 fo

r adults and $5.50 for children. The theater expects to make at least $2000 for each showing
Mathematics
1 answer:
ziro4ka [17]4 years ago
5 0

Answer:

x + y ≤ 300

7.50x + 5.50y ≥ 2000

Step-by-step explanation:

It is given that the theater hall has 300 seats.

If there are x adults and y children then they must satisfy the following inequality that  

x + y ≤ 300 ...... (1)

Now, it is also given that the charge for tickets for adults is $7.50 per ticket and that for children is $5.50 per ticket and the theater expects to make at least $2000 for each show.

Therefore, the following inequality can be written as

7.50x + 5.50y ≥ 2000 ....... (2)

Hence, the inequality equations (1) and (2) can be written from the given data. (Answer)

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The weights of cockroaches living in a typical college dormitory are approximately distributed with a mean of 80 grams and a sta
Romashka [77]

Answer:

The percentage of cockroaches weighing between 77 grams and 83 grams is about 55%.

Step-by-step explanation:

Problems of normally distributed samples are solved using the z-score formula.

In a set with mean \mu and standard deviation \sigma, the zscore of a measure X is given by:

Z = \frac{X - \mu}{\sigma}

The Z-score measures how many standard deviations the measure is from the mean. After finding the Z-score, we look at the z-score table and find the p-value associated with this z-score. This p-value is the probability that the value of the measure is smaller than X, that is, the percentile of X. Subtracting 1 by the pvalue, we get the probability that the value of the measure is greater than X.

In this problem, we have that:

\mu = 80, \sigma = 4

The percentage of cockroaches weighing between 77 grams and 83 grams

This is the pvalue of Z when X = 83 subtracted by the pvalue of Z when X = 83. So

X = 83

Z = \frac{X - \mu}{\sigma}

Z = \frac{83 - 80}{4}

Z = 0.75

Z = 0.75 has a pvalue of 0.7734

X = 77

Z = \frac{X - \mu}{\sigma}

Z = \frac{77 - 80}{4}

Z = -0.75

Z = -0.75 has a pvalue of 0.2266

0.7734 - 0.2266 = 0.5468

Rounded to the nearest whole number, 55%

The percentage of cockroaches weighing between 77 grams and 83 grams is about 55%.

7 0
4 years ago
The value of almost everything you own (assets), such as a car, computer, or house, depreciates (goes down) over time. When an a
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The two variables present here would be the value of the car, and the time is depreciates for. Time is the independent variable, because it is not affected by the value of car. Since the value of the car is a function of the time, therefore, it is the dependent variable.
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4 years ago
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The answer to the first question would be 1% of the purchase price and the answer to the second question would be 0.5 % of the purchase price.
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What I need to know in this question is the answer
RoseWind [281]

Answer:

1.180

2.50

3.56

Step-by-step explanation:

M<4,M<2 and M<5 have to add up to 180 as a result of being a parallel line.

Making m<2 50 since 46°+84=130, 180-130=50.

Since m<1 is 74 and knowing m<2 is 50 74+50=124 180-124=56 m<3=56

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3 years ago
Use substitution to solve the system.
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X=2y+11 and 4x+3y=11 so choose one of them. I choose x=2y+11 and solve it like this 4(2y+11)+3y=11
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