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aniked [119]
3 years ago
7

What is the domain of the function f(x)=45/(x-23)?

Mathematics
2 answers:
galben [10]3 years ago
5 0
Domain is the set of numbers you can use
usually, domain=all real numbers except those that divide by zero

so find those exceptions
find what numbers make deonenator equal to 0 and exclude them
x-23 is denom
x-23=0
x=23

doman is all real numbers except 23
DanielleElmas [232]3 years ago
5 0
Hello. x-23≠0 ; x-23=0 ; x= 23 ; S=]-∞;23[U]23;+∞[
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HELP PLEASE!!! URGENT!!!
Hatshy [7]
F(x) = 3x + 7.....g(x) = 4x - 2

A. (f + g)(x)
     3x + 7 + 4x - 2
     7x + 5 <====

B. (f * g)(x)
    (3x + 7)(4x - 2) =
     3x(4x - 2) + 7(4x - 2) =
    12x^2 - 6x + 28x - 14
    12x^2 + 22x - 14 <===

C. f[g(x)]
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3 0
2 years ago
When 4 is added to three times of a number, the answer is the same as subtracting 2 from the number. What is the number ?
Orlov [11]

Answer:

- 3

Step-by-step explanation:

let n be the number , then

3n + 4 = n - 2 ( subtract n from both sides )

2n + 4 = - 2 ( subtract 4 from both sides )

2n = - 6 ( divide both sides by 2 )

n = - 3

The number is - 3

7 0
3 years ago
In 2010, Utah had a population of about 2.8 x 106. The same year, Wyoming had a population of about 5.6 x 105
Amanda [17]

Answer:

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Step-by-step explanation:

3 0
2 years ago
Use elimination to solve the system of equations given by 3x+ 4y= 5 and 21x+ 28y= 35.
neonofarm [45]

Answer:

(5/4-3/4)

divide both sides by -7 then line them up and solve the equation and delete one variable.

3 0
3 years ago
Literal equations 5y-72=7+5x
joja [24]

Step 1. Add 72 to both sides

5y = 7 + 5x + 72

Step 2. Simplify 7 + 5x + 72 to 5x + 79

5y = 5x + 79

Step 3. Divide both sides by 5

y = 5x + 79/5

4 0
3 years ago
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