Description
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Explanation & Answer
The checks are ready! Some (your) answers or solutions are incorrect but not many.
27. Correct.
28. Correct.
29. The answer is correct and the formula is valid, but the question was to find the value of
log 5 36 without calculator. We are given values of log 5 4 and log 5 9, what is log 5 36 ? It is of
course
log 5 (4 ∙ 9) = log 5 4 + log 5 9 ≈ 0.8614 + 1.3652 = 𝟐. 𝟐𝟐𝟔𝟔.
30. Incorrect. We have difference of logarithms, not sum:
𝑚+2
log 4 (𝑚 + 2) − log 4 (𝑚 − 5) = log 4
= log 4 8 ,
𝑚−5
𝑚+2
= 8, 𝑚 + 2 = 8𝑚 − 40, 7𝑚 = 42, 𝑚 = 𝟔.
𝑚−5
31. Correct.
32. Correct.
33. Correct.
34. Correct.
35. Correct.
36. C...