3 years ago

Simplify. Y plus(15+ y) A.15y B.15+2y C.17y D.15+y

Mathematics

2 answers:

Sergeu [11.5K]3 years ago

7 0

The answer is D. Hope this helps:)

Arte-miy333 [17]3 years ago

3 0

Answer:

2y+15

Step-by-step explanation:

y+(15+y)

y+15+y

(y+y)+15

2y+15

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storchak [24]

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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 \\
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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} \\
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-3=\sqrt{9} \\
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Answer:

Step-by-step explanation:

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