joceboolohry375 joceboolohry375
  • 21-10-2019
  • Mathematics
contestada

Solve the following exponential equations.
10^(3x−5) = 7^x

Respuesta :

valetta valetta
  • 22-10-2019

Answer:

x = 2.3202

Step-by-step explanation:

Given equation:

[tex]10^{(3x-5)} = 7^x[/tex]

on taking log both sides, we get

[tex]\log(10^{(3x-5))} =\log(7^x)[/tex]

now,

using the property of log function

log(aᵇ) = b × log(a)

therefore,

we get

(3x-5)log(10) = xlog(7)

now,

log(10) = 1

and

log(7) = 0.84509

thus,

( 3x - 5 ) × 1 = 0.84509x

or

3x - 0.84509x - 5 = 0

or

2.15491x = 5

or

x = 2.3202

Answer Link

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