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MrRa [10]
3 years ago
8

The inverse of the function

Mathematics
1 answer:
iris [78.8K]3 years ago
7 0

Answer:

B

Step-by-step explanation:

f^-1(x)=3x/7-9/7

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If f(n) =(n-1)^2+3n which statement is true?
Luden [163]
F(-2)=(-2-1)^2+3(-2)
=9-6
=3

Hence, ans is 2
3 0
4 years ago
(20 points NEED HELP ASAP PLZ)
Alika [10]
Not A for sure but I’m not positive which other one it would be.
7 0
4 years ago
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castortr0y [4]
The answer is 3p^3

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4 0
3 years ago
The value of x in the equation log(x-1)9=2 is
mel-nik [20]
\log_{(x-1)} 9=2

the domain:
x-1 >0 \ \land \ x-1 \not=1 \\&#10;x>1 \ \land \ x \not= 2 \\&#10;x \in (1; 2) \cup (2;+\infty)

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\log_{(x-1)}9=2 \\&#10;(x-1)^2=9 \\&#10;\sqrt{(x-1)^2}=\sqrt{9} \\&#10;|x-1|=3 \\&#10;x-1=3 \ \lor \ x-1=-3 \\&#10;x=4 \ \lor \ x=-2

4 is in the domain
-2 is not in the domain

The answer:
x=4

***
Also, the answer in 13 is {8}. -3 is not in the domain. Replace x with -3 and you'll see:
x=\sqrt{5x+24} \\&#10;-3=\sqrt{5 \times (-3)+24} \\&#10;-3=\sqrt{-15+24} \\&#10;-3=\sqrt{9} \\&#10;-3=3
It's not true so -3 isn't a solution to this equation.
4 0
3 years ago
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The average number of hours of sleep per night was 9.46 hours for a sample of 104 five to seven year-old children. The number 9.
Lerok [7]

Answer:

Statistic

Step-by-step explanation:

-In statistics, a statistic is a characteristic or an attribute of a sample used to estimate or calculate the true values/characteristics of an entire population.

-The value 9.6 is only representative of the small sample size of 104 children.

-If the sample size is sufficient enough it can be used to calculate the population's mean, standard deviation and other Central Limit Theorem measures.

5 0
4 years ago
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