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3 years ago

From a group of 8 people, you randomly select 3 of them.

Mathematics

2 answers:

Vanyuwa [196]3 years ago

6 0

Answer:

3/8

Step-by-step explanation:

You don't know whether they are young or old and your not replacing them so your best answer is 3/8.

DIA [1.3K]3 years ago

4 0

Answer:3/8 or 3 over 8

Step-by-step explanation: The whole amount is on the bottom and the top is where the probability is.

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If f(x) and f^-4(x) are inverse functions of each other and f(x) = 2x+5, what is f^-1(x)?

miss Akunina [59]

For this case we must find the inverse of the following function:

$f (x) = 2x + 5$

Then, we follow the steps:

We change $f (x)$ by y:

$y = 2x + 5$

We exchange the variables:

$x = 2y + 5$

We clear the variable "y":

$x-5 = 2y\\y = \frac {x-5} {2}$

We change y for $f^{-1}(x):$

$f^{-1}(x) = \frac {x-5} {2}$

Answer:

$f^{-1}(x) = \frac {x-5} {2}$

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2 years ago

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vesna_86 [32]

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2 years ago

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The pizza cost

ANSWER: D

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