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qaws [65]
3 years ago
5

Tickets to a concert cost $70, or $20 with a student discount. Ticket sales must exceed $500,000 for the group to perform. If 20

,000 seats are available, how many of each type must be sold?Write a system of inequalities to represent this scenario.  Label the variables. Do not solve.
Mathematics
2 answers:
Tasya [4]3 years ago
5 0

Answer:

A system of inequalities to represent this scenario :

x+y \leq 20000

70x+20y\geq 500000

Step-by-step explanation:

Let x be the no. of normal ticket sold

Let y be the no. of tickets sold with student discount

We are given that 20,000 seats are available

So, x+y \leq 20000

Cost of normal ticket = $70

Cost of x normal tickets = 70x

Cost of student discount ticket = $20

Cost of y normal tickets = 20y

We are given that  Ticket sales must exceed $500,000

So, 70x+20y\geq 500000

A system of inequalities to represent this scenario :

x+y \leq 20000

70x+20y\geq 500000

Angelina_Jolie [31]3 years ago
4 0

Solution:

Let x = the number of $70 seats sold

Let y = the number of $20 seats sold

x+y ≤ 20,000

70x+20y > 500,000

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An article claims that 12% of trees are infested by a bark beetle. A random sample of 1,000 trees were tested for traces of the
galben [10]

Answer:

0.68

Step-by-step explanation:

The formula for z test is given above as:

z = p' - p/√(pq/n)

p' = sample proportion

= Number of infested samples(trees)/ Number of samples

p' = 127/1000 = 0.127

p = 12% = 0.12

q= 1 - 0.12 = 0.88

n = number of samples = 1000

z = 0.127 - 0.12/√(0.88 × 0.12/1000)

z = 0.007/√0.0001056

z = 0.007 /0.0102761861

z = 0.6811865737

Therefore, the z test statistic is approximately ≈ 0.68

6 0
3 years ago
Pls help i only have 10 minutes on my math test!!<br> the ratios are<br><br><br> 8:5 ?????:10
dlinn [17]

Answer:

yes

Step-by-step explanation:

5 0
3 years ago
Read 2 more answers
A study was conducted to find out if a new exercise program was more effective than an old one at improving cardiovascular fitne
WITCHER [35]

Answer: (B)

Step-by-step explanation:

An independent sample test compares two sample means in order to determine the statistical significance of the difference between their population means.

The independent sample test would be the best hypothesis test for this study because:

1. There was a random samples of data from the population

2. There was no relationship between the subjects in each sample. That is;

- subjects in the first group were not also in the second group

- subjects in the first group did not influence subjects in the second group and vice versa.

3. There was independence of observations in this study. Each subject in each group was separately observed and each subject has a given fitness performance score.

4. There are values on both the dependent and independent variables.

- the dependent variable is FITNESS PERFORMANCE and for each subject, it is dependent on either the OLD EXERCISE PROGRAM or the NEW EXERCISE PROGRAM.

5. Our dependent variable her is a continuous variable as we see from the range of fitness scores. The lowest score is 19 and the highest score is 73. This shows that the variable is continuous. All the other scores fall in between.

6. Our independent variable is a categorical variable. Categorized into OLD EXERCISE PROGRAM and NEW EXERCISE PROGRAM.

4 0
3 years ago
Nathan had an infection, and his doctor wanted him to take penicillin. Because Nathan’s father and paternal grandfather were all
Helga [31]

The probability that Nathan is not allergic to penicillin, like his father and paternal grandfather, is <u>24.5%</u>.

<h3>What is probability?</h3>

Probability estimates the likelihood of an event occurring.

Probability is expressed as a percentage, decimal, or fraction, and must be less than or equal to one.

<h3>Data and Calculations:</h3>

Nathan's chances of having the same allergy = 75%

Nathan's probability of not having the same allergy = 25% (1 - 75%)

Accuracy of test performed by the doctor = 98%

The probability that Nathan is not allergic to the drug after the test = 24.5% (25% x 98%).

Thus, the probability that Nathan is not allergic to penicillin is <u>24.5%</u>.

Learn more about probability at brainly.com/question/251701

#SPJ1

7 0
2 years ago
I need work shown as well
ira [324]

Answer:

Step-by-step explanation:

the area of the squared is 5 * 5 = 25

the area of the triangle is 1/2*base*height = 1/2*2*5= 5

the area of the circle is  \pir^{2} = \pi2.5^{2} = 19.625

now add the pieces up for the total

25+5+19.625 = 49.625 in^{2}

:)

3 0
3 years ago
Read 2 more answers
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