1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Mnenie [13.5K]
3 years ago
10

"On the Richter scale, the magnitude R of an earthquake can be measured by the intensity formula

Mathematics
1 answer:
Sergeeva-Olga [200]3 years ago
8 0

Answer:

  B)  The earthquake measuring 4.5 on the Richter scale is about 32 times more intense than an earthquake measuring 3.

Step-by-step explanation:

Let Ra = log(Ia/Io), and Rb = log(Ib/Io). Then for ...

  Ra - Rb = 4.5 -3.0 = 1.5

  log(Ia/Io) -log(Ib/Io) = 1.5 . . . . . . . . . . . substitute the given expressions

  (log(Ia) -log(Io)) -(log(Ib) -log(Io)) = 1.5 . . . expand the logs

  log(Ia) -log(Ib) = 1.5 . . . . simplify

  log(Ia/Ib) = 1.5 . . . . . . . . write as a single log

  Ia/Ib = 10^1.5 ≈ 32 . . . . take the antilog

The ratio of intensities is about 32, corresponding to choice B.

You might be interested in
A line passes through (1, –5) and (–3, 7). a. Write an equation for the line in point-slope form. b. Rewrite the equation in slo
finlep [7]

see picture attached.

i hope this helped !!

8 0
3 years ago
Read 2 more answers
If i'm getting 20% commission from a monthly sale of $800000 what is my 30% in month of sale be?
Oksana_A [137]

Answer:

Your commission check for the 20% would be $160,000 and your 30% would be $240,000.

Step-by-step explanation:

To find each of these, multiply the total number of sales by the percentage of the commission.

$800,00*20% = $160,000

$800,000*30% = $240,000

6 0
3 years ago
you drive an average speed of 45 mph and arrive to school 1 minute early the next day you drive 40 mph and arrive late how many
qaws [65]
You live 12 miles from school
6 0
3 years ago
How do I graph the parabola?
scoundrel [369]
First of all, find a program or a calculator that will give you the answer. Then you'll know how to make your table. I recommend Desmos. I have inserted the final graph for you.

Make up a table for this graph. Put the lowest point as the central entry in your graph.

x      y
-4
-3
-2
-1
0
Now fill in the y values. 

x       y
-4      1
-3       -3.5
-2        -5
-1       -3.5
0         1

You can use the outline of the parabola and then mark the outline with the points in the table.

8 0
3 years ago
determine the equation of the quadratic function gievn its roots, by using the algebraic method: {8, 3}
strojnjashka [21]

Answer: y = x^2 - 11x + 24

Step-by-step explanation:

5 0
3 years ago
Other questions:
  • 50 points, best and correct answer gets brainliest.
    12·2 answers
  • Please help I need the answer ASAP!!!!!
    9·2 answers
  • The table contains data for five students: homework scores, x, and corresponding test scores, y.
    10·2 answers
  • Please help!! I need the answer!!
    14·1 answer
  • What is (f−g)(x)?
    10·1 answer
  • The total cost of renting a lawn mower from Lawns Inc. is represented by the function y = 10x + 15, where x represents the numbe
    12·1 answer
  • Which point is located on the graph of the equation y = 2x - 5
    7·1 answer
  • Click the square near each correct choice to fill it in. Be sure to mark all correct answers.
    11·1 answer
  • a pair of awesome skinny jeans cost $25 but it is on sale for 25% off. score if tax is 8% what is the total cost​
    12·2 answers
  • 20points please please help!!!!!!
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!