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ycow [4]
3 years ago
14

1) What is the domain of the relation {(-2,4),(-1,5),(-1,6),(0,5)}

Mathematics
1 answer:
svetoff [14.1K]3 years ago
4 0
1. a. {-2, -1, 0}
2. d. all real numbers  (i think)
3. d. all real numbers (i think)
You might be interested in
two times a number plus three times a number equals 13. The sum of two numbers is 7. what are the numbers? write the numbers for
wel

Answer:

4

Step-by-step explanation:

2+ 3 = 5 \\13-5= 8\\8 divided by 2=4 \\x=4

7 0
3 years ago
In a given year, the average annual salary of a NFL football player was $189,000 with a standard deviation of $20,500. If a samp
nika2105 [10]

Answer:

15.15% probability that the sample mean will be $192,000 or more.

Step-by-step explanation:

To solve this problem, we need to understand the normal probability distribution and the central limit theorem.

Normal probability distribution

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.

Central Limit Theorem

The Central Limit Theorem estabilishes that, for a random variable X, with mean \mu and standard deviation \sigma, a large sample size can be approximated to a normal distribution with mean \mu and standard deviation s = \frac{\sigma}{\sqrt{n}}

In this problem, we have that:

\mu = 189000, \sigma = 20500, n = 50, s = \frac{20500}{\sqrt{50}} = 2899.14

The probability that the sample mean will be $192,000 or more is

This is 1 subtracted by the pvalue of z when X = 192000. So

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

By the Central Limit Theorem

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

Z = \frac{192000 - 189000}{2899.14}

Z = 1.03

Z = 1.03 has a pvalue of 0.8485.

1-0.8485 = 0.1515

15.15% probability that the sample mean will be $192,000 or more.

7 0
3 years ago
A pizza parlor charges $18 for a plain pizza and charges $0.75 for each additional topping.
Georgia [21]

Answer:

the last one

Step-by-step explanation:

well you have 18 pizzas total, and each topping is 0.75. so let's say u want two toppings you would do 75 ×2 and so on, you would label the question

Y= 0.75x + 18

5 0
4 years ago
You have been sent to grocery shop. They gave you $25.00 and the list of what
Nonamiya [84]

Answer:

you would have $2.98 left

Step-by-step explanation:

$4.59 x 2=9.18

3.00 x 3=9.00

$1.99 x 2=3.98

$9.18+$9.00+$3.98=22.16

$25.00-$22.16 = $2.89

3 0
2 years ago
PLEASE HELP
aleksandrvk [35]
A AsA  the angle a and d are equal and side ae and de are egual and angles e are equal
5 0
3 years ago
Read 2 more answers
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