All categories

3 years ago

What is the domain of the function f (x)=x^2+1

Mathematics

1 answer:

denis23 [38]3 years ago

6 0

Alright, so since anything can be squared, the domain is (-inf, inf)

You might be interested in

A company sells its printers to customers in order to make a profit of 25% calculate the price the company paid for a printer wh

ioda

The company paid $2000 for the printer

Step-by-step explanation:

Let x be the price of the printer for which the company bought it.

If x is the price of printer, then 25% of x will be the profit made by the company.

That is:

0.25x

According to the statement,

The cost and profit earned by company are equal to 2500

So,

$x+0.25x = 2500\\1.25x = 2500$

Dividing both sides by 1.25

$\frac{1.25x}{1.25} = \frac{2500}{1.25}\\x = 2000$

Hence,

The company paid $2000 for the printer

Keywords: Percentage, Profit

Learn more about percentage at:

#LearnwithBrainly

7 0

2 years ago

Write the sentence as an inequality.<br><br> The sum of twice a number n and 8 is less than 25

wel

Answer:

less than twenty five

25 - <u>(2n + 8)</u> < the sum of 2 times N plus 8.

Step-by-step explanation:

6 0

3 years ago

HELP ASAP LIKE RN PLSSS

Reptile [31]

Answer:

oop is this a test or something-

Step-by-step explanation:

7 0

2 years ago

Using the quadratic formula to solve x? + 20 = 2x, what are the values of x?

Sergio [31]

I am not sure if the “+” was supposed to go there or if that was just a typo, so I do apologize if this is wrong... but if it doesn’t belong in the equation at all, 20 = 2X is a fairly simply multiplication problem. You are to divide both sides by the 2 and you should get X = 10, because 2 goes into 20, 10 times; and the 2 goes into 2 only once, therefore the 2 now gets cancelled out.

Answer: 20 divided by 2 = 2x divided by 2 is now 10 = X.

Really hope this helps you, have a good day :)

6 0

3 years ago

The data set shows the number of practice free throws players in a basketball competition made and the number of free throws the

Mila [183]

Answer-

The exponential model best fits the data set.

Solution-

x = input variable = number of practice throws

y = output variable = number of free throws

Using Excel, Linear, Quadratic and Exponential regression model were generated.

The best fit equation and co-efficient of determination R² are as follows,

Linear Regression

Quadratic Regression

Exponential Regression

The value of co-efficient of determination R² ranges from 0 to 1, the more closer its value to 1 the better the regression model is.

Now,

Therefore, the Exponential Regression model must be followed.

5 0

3 years ago