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Fed [463]
2 years ago
14

Xlog5 - log125 = 0 solve for x. Asking for step by step answer.

Mathematics
1 answer:
Margarita [4]2 years ago
7 0

Step-by-step explanation:

x log(5)  -  log(125)  = 0 \\  log( {5}^{x} )  -  log(125)  = 0 \\  log( \frac{5x}{125} )  = 0 \\  \frac{ {5}^{x} }{125}  = 1 \\  {5}^{x}  = 125 \\

log( {5}^{x} )  =  log(125)  \\ x log(5)  =  log(125)  \\ x =  \frac{ log(125) }{ log(5) }  = 3

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50% of a certain number is 39. What is the number?
Allushta [10]
Let that certain number be 'n'

50% (n) = 39

50% ⇒ 0.5

0.5 (n) = 39

Divide both sides by 0.5

0.5n = 39
 /0.5    /0.5

n = 78.

So that certain number is actually <em><u>78! :)</u></em>

CROSS CHECK:

50% of 78

0.5 × 78

= 39

Hope this helps! :)
 
8 0
3 years ago
What is true about the absolute values of the slopes of parallel and perpendicular lines?
GenaCL600 [577]
They are the reciprocals of each other, meaning the denominator and the numerator are in switched positions
5 0
3 years ago
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Can someone do #1 and #2 I don't really get the answer. My teacher hasn't explain anything. He just gave us the paper and we got
Elenna [48]
1) f(x) + g(x)

= 7√x + 4 + 2√x - 2

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5 0
3 years ago
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4 0
2 years ago
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Answer:

25

Step-by-step explanation:

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3 years ago
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