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Paraphin [41]
3 years ago
14

PLEASE HELP ASAP If f(x) = x + 4, what is f(5)?​

Mathematics
2 answers:
Fofino [41]3 years ago
5 0

Hey there! I'm happy to help!

A function is kind of like a machine you put a number into and then it changes it and gives you a new number. This function is called f, and x is the number you put into it. So, if we have f(5), this means that 5 is our input that the function will change.

We see that f(x)=x+4. This means that f(5)=5+4, which is just equal to 9.

Therefore, f(5)=9.

Have a wonderful day! :D

Vika [28.1K]3 years ago
3 0

Answer:

9

Step-by-step explanation:

So we have the function:

f(x)=x+4

To find f(5), substitute 5 for x. Thus:

f(5)=5+4

Add:

f(5)=9

So, our answer is 9.

And we're done!

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3% is 300 in intrest

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4% is 400 in intrest

Step-by-step explanation:

4 0
3 years ago
If 3x - 6y = 8, then x - 2y =
Fiesta28 [93]

Answer:

8/3 or 2.6666

Step-by-step explanation:

You have divided the first equation by 3 -- all except the 8. So you must divide the 8 by 3 giving you 8/3 which is 2 2/3 or 2.66666

Answer (x - 2y) = 8/3

8 0
3 years ago
Read 2 more answers
Joshua has $560. He wants to buy a laptop that costs $320 as well as a case for the laptop that costs $65 and is currently on sa
Igoryamba

Answer:$154.73

Step-by-step explanation:

Take 65 and multiple .15 and that will give you the 15% off of the case. When u do that you get 9.75 so then 65-9.75= 55.25 multiply .08 for the sales tax on the case = 4.42 add to 55.25= 59.67 then add the sales tax for the laptop 320 multiplied by .08 = 25. 60 for a total of 345.60 then add that to 59.67 = 405.27 then u have to subtract that from 560 and Josh has $154.73

6 0
3 years ago
Kelly earns $178.50 in interest on an account that earns simple interest at a rate of 4%. If she kept the money in the account f
Otrada [13]

Answer:

  $892.50

Step-by-step explanation:

The amount of interest earned is given by ...

  I = Prt

Filling in the given values, we have ...

  $178.50 = P·0.04·5

Dividing by 0.20 gives ...

  $178.50/0.20 = P = $892.50

The principal amount in Kelly's account is $892.50.

7 0
3 years ago
HELLLLLLLLLLLLLLP PLLLLLLLSSS, I NEED HELP WITH THIS ANSWER
vlabodo [156]
It would be -4, and 9.2 because they sign is saying that x is less than or equal too 11.
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3 years ago
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