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 piece of string is 3 yards long. How many 1 and a quarter yard long pieces can Julie cut from the string?
Georgia [21]
This question is actually a lot simpler than it seems

for a quarter think about money - a quarter is 25 cents or 1/4 of a dollar - so 1 and a quarter yard in decimal form is equivalent to 1.25

now you need to find how many 1 and a quarter yards are in 3 yards - to do this you simply divide 3 by 1.25

3/1.25 = 2.4

so julie can cut 2.4 1 and a quarter long pieces from the string

if you have any questions about how i answered this question please let me know:)
3 0
3 years ago
Read 2 more answers
Solve whether the equation have 1 solution no solution or infinity solution
babymother [125]
Steps to solving equations:
Simplify/combine the like terms
Isolate the variable (Get the variable on one side
Solve for the variable

-2y - 7 + 5y = 13 - 2y Simplify/Combine terms
3y -7 = 13 - 2y Isolate variable by adding 2y to both sides
5y - 7 = 13 Add 7 to both sides to get y alone on one side
5y = 20 Divide by 5 on both sides to solve for y
y = 4
You can check your answer by replacing y with 4 in the original equation.
5 0
2 years ago
Read 2 more answers
What is the first step in evaluating the expression below?
Arada [10]

Answer:

add two and five is the first step beacuse there in ()

Step-by-step explanation:

5 0
2 years ago
Read 2 more answers
Which situation best shows causation?
dangina [55]

A cause and effect relationship exist between two variables, when one

variable event is made to happen by the other variable.

The situation which best shows causation is option <u>B) The amount of time a </u>

<u>cell phone is used affects the charge of the battery</u>.

Reasons:

Causation is the condition in which the occurrence of an event is caused by

or contributed to by another event. Such that the incident or observation

identified as the cause is responsible for the event, while the the

occurrence of the event depends on the cause being put in place.

  • Option A) A rectangle of a given width can have different dimensions of length

  • Option C) Milkshakes and ice cream bars can have different customer base, such that the number of milkshake and ice cream bars sold can be equal

  • Option D) The balls used in a soccer match are provided by the officials of the game

Therefore;

  • The situation which shows causation is B) <u>The amount of time a cell phone is used affects the charge of the battery</u>.

The option is correct because, a cell phone is powered by battery, and

therefore, the more the cell phone is used, the battery power is used up

and therefore, the charge on the battery is reduced.

Learn more here:

brainly.com/question/18404964

3 0
2 years ago
WILL MARK BRAINLIEST Imagine that you are plotting points on a coordinate plane. Each axis is labeled with integers from -5 to 5
Fudgin [204]

Answer:

The coordinate of a point is its location on a grid.

The point will be located halfway between -2 and -3 on the x-axis, on -4 on the y-axis

The coordinate is given as:

Express as decimals

The above point means that:

This means that:

The point will be located halfway between -2 and -3 on the x-axis, on -4 on the y-axis

Step-by-step explanation:

7 0
2 years ago
Other questions:
  • If y varies inversely as x, and y = 5 as x = -2, find y for the x-value of 3.
    8·2 answers
  • Milton needs to find the product of two numbers.one of the number is 6. the answer also needs to be 6 how will you solve this pr
    6·1 answer
  • What is the distance between the points (-6, 7) and
    9·2 answers
  • Joe and Mark wash and wax cars on the weekend. On each car, they spend $1.50 on soap, $3.00 on wax, and $1.25 on wheel &amp; tir
    10·2 answers
  • Sung Lee invests $5,000 at age 18. He hopes the investment will be worth $20,000 when he turns 25. If the interest compounds con
    13·1 answer
  • in a college library there are 4 times as many nonfiction books as fiction books.find the ration of non fiction books to the no
    8·2 answers
  • Which of the following graphs represents the equation above -3x+2y=8
    15·2 answers
  • Help me please I have no clue
    7·1 answer
  • What is a formula for the nth term of the given sequence? 20,23, 26...​
    11·1 answer
  • Write the following in standard form.
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!