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Umnica [9.8K]
2 years ago
11

Random khan question and I haven't done this in a year, I'm struggling.

Mathematics
1 answer:
Stolb23 [73]2 years ago
8 0

Answer:

Add maybe

Step-by-step explanation:

add the 500+400+200 try that hope it helps have a great day

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Find the domain of the function (f/g)(x) given f (x)=x^2-4x-5 and g(x)=x^2-25
stealth61 [152]

Answer:

all real numbers except ±5.

Step-by-step explanation:

Each function (f(x), g(x)) has a domain that is all real numbers. Their quotient (f(x)/g(x)) must exclude values that make g(x) = 0. The quotient is undefined when the denominator is zero. Those excluded values are x = ±5.

The domain of (f/g)(x) is all real numbers except ±5.

___

Of course you recognize x^2 -25 = 0 has solutions x = ±√25 = ±5. You can get there two ways:

  1. add 25 and take the square root: x^2=25; x=±√25.
  2. factor the difference of squares and set the factors to zero: (x-5)(x+5)=0 has solutions x-5=0 and x+5=0, that is, x = ±5.
5 0
3 years ago
F(x) = 2x, find the ordered pair when x = 1. O (1,2) 0 (4,1) (2,1) O (1,4)​
kenny6666 [7]

Answer:

The ordered pair is (1, 2) ⇒ A

Step-by-step explanation:

In the function f(x) = y

  • x is the domain of the function
  • y is the range of the function
  • The domain is all the x-coordinates of the points lie on the graph of the function
  • The range is all the y-coordinates of the points lie on the graph of the function

That means any ordered pair (x, y) satisfy the function f(x) = y, lies on the graph of the function

∵ f(x) = 2x

→ That means y = 2x

∵ x = 1

→ Substitute the value of x in the function above

∴ f(1) = 2(1)

∴ f(1) = 2

→ That means at x = 1, y = 2

∴ The ordered pair is (1, 2)

6 0
3 years ago
CoNfUsIoN!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
lys-0071 [83]

Answer:

it has infinitely many solutions because it can be solved by many technics

Step-by-step explanation:

hope my answer helps mark me brianliest plz

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Marcy owed her frien Ericka $25 dollars and owed her $15 dollars.
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She owes in total 40$ in total but seprate
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What number am i thinking of?<br> a. 21<br> b. 9<br> c. 69<br> d. 7
icang [17]
Your thinking of the number 69
6 0
3 years ago
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