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olya-2409 [2.1K]
3 years ago
7

What is a function ? Example

Mathematics
1 answer:
salantis [7]3 years ago
6 0

Answer:

We could define a function where the domain X is again the set of people but the codomain is a set of numbers. For example, let the codomain Y be the set of whole numbers and define the function c so that for any person x, the function output c(x) is the number of children of the person x.

Step-by-step explanation:

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Help! Inequalities galore... :(
Dafna1 [17]

Answer:

B) 0>-2/3

Step-by-step explanation:

It is simple, all it is that negative counting system is the opposite of the positives, so for Ex. -4<-3

5 0
3 years ago
Read 2 more answers
Solve the equation for the given domain. Graph the solution set. 3x – y = 1 for x = {–1, 0, 1, 3}
Marat540 [252]
I think you meant "evaluate the given equation."  

<span>3x – y = 1  becomes 3x-1=y.  Then:  3(-1)-1 = y = -4 when x=-1.

The y-values for {0, 1, 3} are {-1, 2, 8}</span>
3 0
3 years ago
The commute time for people in a city has an exponential distribution with an average of 0.5 hours. What is the probability that
mamaluj [8]

Answer:

0.314 = 31.4% probability that a randomly selected person in this city will have a commute time between 0.4 and 1 hours

Step-by-step explanation:

Exponential distribution:

The exponential probability distribution, with mean m, is described by the following equation:

f(x) = \mu e^{-\mu x}

In which \mu = \frac{1}{m} is the decay parameter.

The probability that x is lower or equal to a is given by:

P(X \leq x) = \int\limits^a_0 {f(x)} \, dx

Which has the following solution:

P(X \leq x) = 1 - e^{-\mu x}

The probability of finding a value higher than x is:

P(X > x) = 1 - P(X \leq x) = 1 - (1 - e^{-\mu x}) = e^{-\mu x}

In this question:

m = 0.5, \mu = \frac{1}{0.5} = 2

What is the probability that a randomly selected person in this city will have a commute time between 0.4 and 1 hours?

P(0.4 \leq X \leq 1) = P(X \leq 1) - P(X \leq 0.4)

In which

P(X \leq 1) = 1 - e^{-2} = 0.8647

P(X \leq 0.4) = 1 - e^{-2*0.4} = 0.5507

So

P(0.4 \leq X \leq 1) = P(X \leq 1) - P(X \leq 0.4) = 0.8647 - 0.5507 = 0.314

0.314 = 31.4% probability that a randomly selected person in this city will have a commute time between 0.4 and 1 hours

4 0
3 years ago
A total of 120 smoothies were sold on the first day of the month from July-December. True or false
melisa1 [442]

Answer:

the answer would basically be 720 smoothies in total from Jul.-Dec.

Step-by-step explanation:

YWW :)

6 0
3 years ago
Solve the inequality<br><br> 2−5w≤−8
Paha777 [63]

Answer:

The inequality for w is 2

6 0
3 years ago
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