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Svetllana [295]
3 years ago
5

If f(x) = [xl-5, what is f(8.6)?

Mathematics
1 answer:
Fynjy0 [20]3 years ago
4 0

Answer:

  3 or 4, depending on the intended meaning of [x]

Step-by-step explanation:

Perhaps you mean ...

  \displaystyle f(x)= \lfloor x\rfloor -5\\\\f(8.6)=\lfloor 8.6\rfloor-5=8-5=3

__

On the other hand, perhaps you mean ...

  \displaystyle f(x)=\lceil x\rceil -5\\\\f(8.6)=\lceil 8.6\rceil-5=9-5=4

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Answer:

x=4

Step-by-step explanation:

4x - 3 = 2x + 5

4x - 2x = 5 + 3

2x = 8

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x = 4

7 0
2 years ago
Philip can do 15 math problems in 5 minutes. How long will it take him to do 21 problems?
ZanzabumX [31]

Answer:

It takes him 7 minutes to do 21 problems

Step-by-step explanation:

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So you would then do...

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3 years ago
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timofeeve [1]

Answer: The complete question is found in the attachment

Step-by-step explanation:

a) To determine the 1-unit growth factor for <em>f</em>

= 2.1/1.75 = 1.2

b) To determine the 1-unit percent change for <em>f</em>

<em>=100 x 1-1.2/1 = 0.2 x 100= 20%</em>

<em>c) to determine the initial value of f</em>

<em>f(x)= abˣ , b =1.2   a=initial value</em>

<em>at (-1,2.1)</em>

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<em />

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6 0
3 years ago
Graph the line y-3=-1/3(x+2)
e-lub [12.9K]

Slope: 1/2

y-intercept(s): (0, 7/3)

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3 0
2 years ago
Read 2 more answers
I JUST NEED 4 PLS!!!!!!
Alchen [17]

Answer:

C

Step-by-step explanation:

When doing 4 divided by 2 you get 2. Looking at the sign it is saying 3 is greater than the number we solve for. Since we solved and got 2 we can double check and ask is 3 greater than 2? Yes it is so that would make the statement correct.

Hope this Helps :)

6 0
3 years ago
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