3 years ago

What is the domain of y=log5x

Mathematics

1 answer:

MrMuchimi3 years ago

4 0

All real numbers are greater than 0

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I need help with number 2 please.

Vedmedyk [2.9K]

The answer is 73.33333333 (repeated). You can also write it as 73 or 73.3 with a line over the 3 (after the decimal point) to indicate it being repeated.

8 0

3 years ago

Using these complex zeros (1,1,-1/2,2+i,2-i) factor f(x)=-2x^5 +11x^4 -22x^3 +14x^2 +4x -5

Marianna [84]

$\bf \begin{cases}
x=1\implies &x-1=0\\
x=1\implies &x-1=0\\
x=-\frac{1}{2}\implies 2x=-1\implies &2x+1=0\\
x=2+i\implies &x-2-i=0\\
x=2-i\implies &x-2+i=0
\end{cases}
\\\\\\
(x-1)(x-1)(2x+1)(x-2-i)(x-2+i)=\stackrel{original~polynomial}{0}
\\\\\\
(x-1)^2(2x+1)~\stackrel{\textit{difference of squares}}{[(x-2)-(i)][(x-2)+(i)]}$

$\bf (x^2-2x+1)(2x+1)~[(x-2)^2-(i)^2]
\\\\\\
(x^2-2x+1)(2x+1)~[(x^2-4x+4)-(-1)]
\\\\\\
(x^2-2x+1)(2x+1)~[(x^2-4x+4)+1]
\\\\\\
(x^2-2x+1)(2x+1)~[x^2-4x+5]
\\\\\\
(x^2-2x+1)(2x+1)(x^2-4x+5)$

of course, you can always use (x-1)(x-1)(2x+1)(x²-4x+5) as well.

7 0

3 years ago

What’s 15/25 in its simplest form?

dexar [7]

Answer: 3/5

Step-by-step explanation: Just divide both by 5.

8 0

2 years ago

Someone who's good at math please help me!!!

timurjin [86]

#1.
Here what you do is cross multiply.
$\frac{8x}{13x}$
#2.
Same as #1, just cross multiply.
$\frac{9x}{12}$

You get the gist?

8 0

3 years ago

Please help me id really appreciate it

loris [4]

Answer:

Step-by-step explanation:

1. 2/5

2. 9/20

3. 0.43

4. 40.2%

5. 42%

6. 0.403

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I truely hope this is right & i hope this helps you ! <3

5 0

2 years ago