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Helga [31]
3 years ago
11

HELPPPPPPPPPPPPPPPPP

Mathematics
1 answer:
Elena L [17]3 years ago
4 0

Answer:

11/ and 3 and 1

Step-by-step explanation:

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370

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4 years ago
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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 \\
x>1 \ \land \ x \not= 2 \\
x \in (1; 2) \cup (2;+\infty)

the equation:
\log_{(x-1)}9=2 \\
(x-1)^2=9 \\
\sqrt{(x-1)^2}=\sqrt{9} \\
|x-1|=3 \\
x-1=3 \ \lor \ x-1=-3 \\
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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} \\
-3=\sqrt{5 \times (-3)+24} \\
-3=\sqrt{-15+24} \\
-3=\sqrt{9} \\
-3=3
It's not true so -3 isn't a solution to this equation.
4 0
3 years ago
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Choose the point-slope form of the equation below that represents the line that passes through the point (−1, 6) and has a slope
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Answer:

3x + y = 3

Step-by-step explanation:

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Which of the following numbers can be expressed as decimals that terminate 5/2 4/5 2/7 4/3
Brrunno [24]

Answer: have no idea hon

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4 0
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