Math, asked by santhoshi38, 9 months ago

log 128 base of 10 - log 625 base of 10

Answers

Answered by ashutoshbhavsar103
3

Answer:

7log2 - 4log5 ≈ 2.1-2.79 ≈ -0.69

Step-by-step explanation:

Assuming log base 10 = log

log(128) - log(625) = 7log2 - 4log5

Answered by amitnrw
1

Given : log₁₀128 - log₁₀625

To Find : Value

Solution:

log₁₀128 - log₁₀625

= log₁₀2⁷ - log₁₀5⁴

= 7 log₁₀2 - 4 log₁₀5

= 7 log₁₀2 - 4 log₁₀(10/2)

= 7 log₁₀2 - 4 (log₁₀10 -   log₁₀2)

= 7 log₁₀2 - 4 log₁₀10 + 4log₁₀2)

= 11 log₁₀2 -4 (1)

= 11 log₁₀2  - 4

= 11(0.301) - 4    ( log₁₀2 =0.310)

= 3.311 - 4

= -0.689

log₁₀128 - log₁₀625 = -0.689

Learn More:

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