In 2011, Japan experienced an intense earthquake with a magnitude of 9.1 on the Richter scale. In 2003, Japan experienced another intense earthquake that measured 8.3 on the Richter scale. Compare the intensities of the two earthquakes. Use a logarithmic model to solve. Round to the nearest whole number.

Answers

Answer 1

Answer:

The intensity of the 2011 earthquake was about 6 times the intensity of the 2003 earthquake.

Step-by-step explanation:

To compare the intensities, we first need to convert the magnitudes to intensities using the log formula. Then we will set up a ratio to compare the intensities.

Convert the magnitudes to intensities and write them in exponential form.

R=logI

2011 earthquake:

9.1I=logI=109.1

2003 earthquake:

8.3I=logI=108.3

Form a ratio of the intensities.

intensity for 2011intensity for 2003

Substitute in the values and divide by subtracting the exponents to find

109.1108.3100.8≈6.

The intensity of the 2011 earthquake was about 6 times the intensity of the 2003 earthquake.

Your answer:

The intensity of the 2011 earthquake was about 15 times the intensity of the 2003 earthquake.

Answer 2

The intensities of the two earthquakes will be 6.3095.

What is Algebra?

Algebra is the study of abstract symbols, while logic is the manipulation of all those ideas.

In 2011, Japan encountered a serious quake with an extent of 9.1 on the Richter scale. In 2003, Japan encountered another extraordinary seismic tremor that deliberate 8.3 on the Richter scale.

The intensity of the earthquake is given as,

㏒ (I₁ / I₂) = M₁ - M₂

㏒ (I₁ / I₂) = 9.1 - 8.3

Simplify the equation, then we have

㏒ (I₁ / I₂) = 9.1 - 8.3

㏒ (I₁ / I₂) = 0.8

Take anti log, then we have

(I₁ / I₂) = 6.3095

The intensities of the two earthquakes will be 6.3095.

More about the Algebra link is given below.

https://brainly.com/question/953809

#SPJ2


Related Questions

hi!! please help :) i hope you guys are having a good day/night!!

Answers

Answer:

x = 13, y = 26

The length of the sides of Δ QRS are QR = 104, QS = 468, RS = 76

Step-by-step explanation:

In ΔRQS

∵ M is the mid-point of side RQ

→ That means M divide RQ into 2 equal parts RM and MQ

RM = MQ

∵ RM = 4x

∵ MQ = 52

→ Equate them

4x = 52

→ Divide both sides by 4 to get x

x = 13

∵ P is the mid-point of side QS

→ That means P divide QS into 2 equal parts QP and PS

QP = PS

∵ QP = 9y

∵ PS = 234

→ Equate them

9y = 234

→ Divide both sides by 9 to get y

y = 26

→ Find the length of each side

∵ RQ = 52 + 52

RQ = 104

∵ QS = 234 + 234

QS = 468

∵ RS = 38 + 38

RS = 76

∴ The length of the sides of Δ QRS are QR = 104, QS = 468, RS = 76

Note: PS = 234 is wrong because it made the length of the sides QS = 468, which could not be because the sum of any 2 sides of a triangle must be greater than the 3rd side. So check it.

The sum of a number, x, and 1/2 is equal to 4. Which set of equations correctly represents x?

Answers

Answer:4=1/2x

X=8

Step-by-step explanation:

a size 8 kids shoe measures 9 2/3

Answers

What am I suppose to answer?

Which points on the wave are the trough and the crest?


Answers

Answer:

ok

trough is the y

Crest is W

I put a picture for help

Jimmy scored 49 goals in soccer this season.tommy scarred 7 times fewer goals how many goals did tommy score

Answers

i do not know how to play soccer but if you are only subtracting 7 from 49, the answer would be 42.

so my answer is 42 unless you aren’t supposed to subtract
Your answer is gonna be 42 !

Solve 2m = 480.6. :)

Answers

Answer:

Step-by-step explanation:

2m=460.6

M=230.3

3m+3(m+6)

answer fast please.

Answers

Answer: 18

-3m + 3(m + 6)

= -3m + 3m + 18

= 18

Step-by-step explanation:

Find the degree measure of the angle with the given radian measure. (Round your answer to one decimal place.)

Answers

Answer:

108 degrees

Step-by-step explanation:

Since we are not given the radian measure. Let the radian measure be 3π/5 rad;

Using the conversion;

πrad = 180°

3π/5 rad = x

Cross mulriply;

π * x = 180 * 3π/5

x =  180 * 3/5

x = 36 * 3

x = 108 degrees

Hence the degree measure is 108 degrees

Note that the same conversion can be used to convert other values in radians

Which expressions have the same value as the product of 0.06 X 3.9?

Circle the letter for all that apply.
A 216 X 0.001
B 0.216 X 0.01
C 21.6 X 0.01
D 2.16 X 0.1
E 216 X 0.01

Answers

The answer is
B
Good luck hope it’s right

Determine the equation of the line passing through the point below having the corresponding
slope.
Point: ( - 25, -9)

Slope: m=1/5

Write your answer as an equation in the form
y = mx + b

Answers

Answer:

y=1/5x-4

Step-by-step explanation:

So, first we're gonna put this into point slope form, (y-y1)=m(x-x1), then we'll convert it. When you plug the numbers in, you get (y+9)=1/5(x+25)

Then, you simplify!

y= 1/5(x+25)-9

y=1/5x+5-9

y=1/5x-4

Hope this helped!

According to the graph below, what percent of the Simpsons’ annual expenses is Federal taxes? A circle graph titled Simpson's Annual Expenses. Federal taxes, 24 percent; State/local taxes, 10 percent; Housing and household, 23 percent; Food, 6 percent; Medical care, 8 percent; Transportation, 11 percent; Recreation, 3 percent; Clothing, 5 percent; Other, 10 percent. a. 10% b. 14% c. 24% d. 34%

Answers

According to the graph, the percentage of the Simpsons’ annual expenses that is Federal taxes is 24%

What is a circle graph?

A circle graph also known as pie chart has a shape of a circle and each section are represented in percentages or degrees

From the question, we have:

Federal taxes = 24%State/local taxes = 10%Housing and household = 23%;Food = 6%Medical care = 8%Transportation = 11%Recreation = 3%Clothing = 5%Other = 10%

The above means that the percentage of the Simpsons’ annual expenses that is Federal taxes is 24%

Read more about circle graphs at:

https://brainly.com/question/24461724

Answer:

10%

Step-by-step explanation:

I'll give brainliest hurry

Answers

Answer:

p

Step-by-step explanation:

Allen bought a computer that was 25% off the regular price of $480.
If an 5% sales tax was added to the cost of the computer, what was the total price Allen paid for it?

Answers

Answer:

144? or 126 sorry

Step-by-step explanation:

What is an equation of the line that passes through the points (-4,-4) and (4,6), answer in fully reduced form.

Answers

Use  

y

2

y

2

x

2

x

1

4

9

2

3

=  

5

1

=

5

Answer link

Jim G.

Jun 11, 2018

y

=

5

x

6

Explanation:

the equation of a line in  

slope-intercept form

is.

x

y

=

m

x

+

b

where m is the slope and b the y-intercept

to calculate m use the  

gradient formula

x

m

=

y

2

y

1

x

2

x

1

let  

(

x

1

,

y

1

)

=

(

2

,

4

)

and  

(

x

2

,

y

2

)

=

(

3

,

9

)

m

=

9

4

3

2

=

5

1

=

5

y

=

5

x

+

b

is the partial equation

to find b substitute either of the 2 given points

into the partial equation

using  

(

2

,

4

)

then

4

=

10

+

b

b

=

4

10

=

6

y

=

5

x

6

is the equation of lineAnswer:

Step-by-step explanation:

Use  

y

2

y

2

x

2

x

1

4

9

2

3

=  

5

1

=

5

Answer link

Jim G.

Jun 11, 2018

y

=

5

x

6

Explanation:

the equation of a line in  

slope-intercept form

is.

x

y

=

m

x

+

b

where m is the slope and b the y-intercept

to calculate m use the  

gradient formula

x

m

=

y

2

y

1

x

2

x

1

let  

(

x

1

,

y

1

)

=

(

2

,

4

)

and  

(

x

2

,

y

2

)

=

(

3

,

9

)

m

=

9

4

3

2

=

5

1

=

5

y

=

5

x

+

b

is the partial equation

to find b substitute either of the 2 given points

into the partial equation

using  

(

2

,

4

)

then

4

=

10

+

b

b

=

4

10

=

6

y

=

5

x

6

is the equation of line

There are 30.48 centimeters in 1 foot. About many feet are equivalent to 500 centimeters?

Answers

Answer:

I think the answer is 16.4042. I hope this helped:D

Step-by-step explanation:

WILL GIVE BRAINLIEST!!
What is the value of 1/60?

Answers

Answer:

1/6

Step-by-step explanation:

Answer:

C. 1

Step-by-step explanation:

You can use the interactive graph below to find the answer.
\begin{cases} y=x+1 \\\\ y=2x-5 \end{cases}









y=x+1
y=2x−5


Choose 1 answer:
Choose 1 answer:

(Choice A)
A
Exactly one solution

(Choice B)
B
No solutions

(Choice C)
C
Infinitely many solutions

Answers

Answer:

there is only one solution.

Step-by-step explanation:

hope this helps!

What life insurance policy never expires?

Answers

Answer:

whole life insurance

Step-by-step explanation:

Answer:

Term life insurance and Universal life

Step-by-step explanation:

Explain how to convert 6 feet into meters.

Answers

Answer:

1.8288   google feet to meter conversion

Step-by-step explanation:

1 foot is 0.3048 meters

1.8288 is the answer i hope

evaluate -3 - (-4) - (-2) + 1

Answers

Answer:

4

Step-by-step explanation:

-3 - (-4) - (-2) + 1

-3 + 4+ 2 +1

1 +2+1

2 + 2

4

Domino's offers the following “deals”:
Deal #1: $10 for one large pizza and $5 for each additional large pizza on the same order.
Deal #2: $6.00 per large pizza
What equation can we use to graph a line showing the different pizza deals?

Answers

Answer: Deal one: 5x+10

Deal two: 6x

$6 notebook; 50% off; 7% tax

Answers

Answer: The notebook is worth 2.79

Step-by-step explanation: Let's start off with taking 50% off of 6, which is 3$. Now we need to do 7% of 3:

7 x 3 = 21

21 / 100 = 0.21

3 - 0.21 = 2.79

Hope this helps :)

Abigale drove 20 kilometers in 10 minutes, and Jordan drove 30 kilometers in 15 minutes.
Both Abigale and Jordan drove at a constant speed.
Did Abigale and Jordan drive at the same speed? Explain your reasoning.

Answers

Answer:

15

Step-by-step explanation: 20+10+3+30 =30

A ratio of 3 erasers and 6 pencils could be expressed as 3:6. If the number of erasers is represented by white circles and the number of pencils is represented by black circles, which is a correct representation of the ratio?

Answers

Answer:

It'd be C.

There are 3 erasers shown and 6 pencils and to simplify the given ratio it would be 1:2

So the third representation would be the one that made the most sense.

Answer:

Option 3

Step-by-step explanation:

Ratios can be written as fractions, so 3:6=3/6. That can be simplified to 1/2, 1:2. That mesns for every eraser, there are two pencils. If white circles are erasers and black circles pencils, the correct answer will be the answer with one white circle and two black circle in each group. So the correct answer will be the third one.

Find the slope of regular AB, and make sure you reduce the fraction to simpelist form 

Answers

Answer:

The slope is 1/2.

Step-by-step explanation:

Kylie is 59.54 inches tall. Her friend Adam is 1.37 inch taller than she is. How tall is
Adam?

A 58.17 inches tall
B 60.85 inches tall
C 60.91 inches tall
D 70.35 inches tall

Answers

C; 60.91 inches tall

Irene can snap 48 times in 8 minutes at a constant rate. How many
times can she snap in 9 minutes?

Answers

6 snaps a minute if you multiply 9 x 6 is 54

Answer:

54 times in 9 mins.

Step-by-step explanation:

divide 48/8 = 6

6 times 9 = 54

How is the square root calculated using the Newton-Raphson method?
no answer needed, just take the points, I have the answer.

Answers

Step-by-step explanation:

jfjdjxjdjdnndnsnsnsns

Answer:

thanks for the points

Step-by-step explanation:

jdkdhdbkejebejeejjejebsbehehs

What is the point slope form for (2,0)(4,6)

Answers

Answer:

0-y=3/4(x-2)

Step-by-step explanation:

A pond contains 110 fish, of which 20 are carp. If 10 fish are caught from the lake, what are the mean and variance of the number of carp among those 10?

Answers

Answer:

Mean = 1.82

Variance = 1.365

Step-by-step explanation:

We define X as the random variable that counts the number of the carp fishes that has been caught. Also we assume that all the fishes are equally likely to be caught. In that case we have that X as hypergeometric distribution.

The of the Hypergeometric Distribution and Its variance is given below.

Mean of the distribution = [tex]n*\frac{k}{N}[/tex]

Variance = [tex]\frac{n*k*(N-k)(N-n)}{N^2(N-1)}[/tex]

N= 110

k = 20

n = 10

Upon calculation we get

Mean = [tex]10*\frac{20}{110}[/tex]

          = 1.82

Variance = [tex]\frac{10*20*(110-20)(110-10)}{110*110*(110-1)}[/tex] = 2*90*100/11*11*109 = 1.365

Therefore the mean is 1.82 and variance is 1.365

The mean and the variance of the number of carp are 20/11 and 180/121, respectively

The given parameters are:

Fishes = 110

Carp = 20

The probability of selecting a carp is:

p = 20/110

Simplify

p = 2/11

In a selection of 10 fishes, we have:

n = 10

The mean is:

E(x) = np

This gives

E(x) = 10 * 2/11

E(x) = 20/11

The variance is

Var(x) = E(x) * (1 - p)

So, we have:

Var(x) = 20/11 * (1 - 2/11)

Simplify

Var(x) = 20/11 * 9/11

Evaluate the product

Var(x) = 180/121

Hence, the mean and the variance of the number of carp are 20/11 and 180/121, respectively

Read more about mean and variance at:

https://brainly.com/question/15858152

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