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Jlenok [28]
1 year ago
11

The graph of the function f(x) = (x − 3)(x + 1) is shown.

Mathematics
1 answer:
AVprozaik [17]1 year ago
3 0

The expression that describes all of the values for which the graph is positive and decreasing is all real values of x where x < -1

<h3>Which describes all of the values for which the graph is positive and decreasing?</h3>

The equation of the function is given as:

f(x) = (x - 3)(x + 1)

When the value of the graph is positive, we have:

f(x) > 0

So, the function becomes

(x - 3)(x + 1) > 0

Split the above inequality

x - 3 > 0 and x + 1 > 0

Solve for x in the inequalities

x > 3 and x > -1

Hence, the expression that describes all of the values for which the graph is positive and decreasing is all real values of x where x < -1

Read more about intervals at:

brainly.com/question/1503051

#SPJ1

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Write the ratio two fifths<br> to 8 as a fraction in simplest form.<br><br> PLEASE HELP
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the answer is b on oddesseyware

Step-by-step explanation:

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Everyone please answer one of these my birthday tuesday but i might be in trouble if i fail this :(
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Answer:

11. b

10.d

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Step-by-step explanation:

11.

3/x-4=7/x

*cross multiply

3x=7 (x-4)

3x=7x-28

28=7x-3x

28=4x

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10.

SOHCAHTOA

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9.

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ML/WB=LN/BN=MN/WN

LN/BN=10/6

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24/x=10/6

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8 0
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Last month 4,861 books were checked out from the Library.this month 3,278 books were checked out.how many more books were checke
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1,583

Step-by-step explanation:

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A simple random sample of n measurements from a population is a subset of the population selected in a manner such that which of
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Answer:

a) sample of size n from the population has an equal chance of being selected.

b) Every member of the population has an equal chance of being included in the sample.                                            

Step-by-step explanation:

Simple random sampling:

  • It is a type of probabilistic sampling.
  • It is an unbiased representation of population.
  • The probability of selection is equal for every observation.
  • A sample is taken in such a way that each member has an equal probability of being selected.
  • A simple random sample is a subset of a statistical population in which each member of the subset has an equal probability of being chosen.
  • Thus,the correct interpretation is given by,

a) sample of size n from the population has an equal chance of being selected.

b) Every member of the population has an equal chance of being included in the sample.

  • c) The simplest method of selection is used to create a representative sample.

The statement is false.

There is no pattern or technique used for selection. The selection is purely random.

  • d) Each subset of the population has an equal chance of being included in the sample.

The statement is false.

Each object of the population has an equal chance of being included in the sample. and not each subset.

  • e) Every sample of size n from the population has a proportionally weighted chance of being selected.

The given statement is false.

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