Evaluate 6log1+3⋅10log7without using a calculator
January 13th, 2018
Question 17:
Evaluate 6log1+3⋅10log7without using a calculator.
6log1+3⋅10log7 = ____________
Question 18:
Use a calculator to evaluate (log 3)+(ln
10).
If the answer is not an integer, enter it
as a decimal rounded to the nearest hundredth, if needed.
(log 3)+(ln 10) = ____________
Question 19:
The Richter scale magnitude, R, of an
earthquake of intensity Iis defined as R=log(II0),where I0is a small threshold
intensity. Find the magnitude of an earthquake with intensity 75,000,000I0.
If the answer is not an integer, enter it
as a decimal rounded to the nearest hundredth, if needed.
magnitude = ____________