How many more times intense, to two decimal places, was the 2011 earthquake in Japan that measured 9.0 on the Richter scale than the 1905 earthquake in San Francisco that measured 8.1 on the Richter scale?

Answers

Answer 1

Using the properties of logarithms, it is found that the earthquake in Japan in 2011 was 12.92 times more severe.

How to find the ratios of the intensity of earthquakes?

As given in the problem, the intensities of the earthquakes are given by logarithms of base 10. Then, supposing that the intensities are [tex]R_1, R_2 > 0, R_1 > R_2[/tex], the ratio of the intensities is given by:

[tex]10^{\frac{R_1}{R_2}}[/tex]

The intensities for this problem are [tex]R_1 = 9, R_2 = 8.1[/tex], hence the ratio is:

[tex]10^{\frac{9}{8.1}} = 12.92[/tex]

The earthquake in Japan in 2011 was 12.92 times more severe.

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Related Questions

Mrs. Anderson had twice as many chickens as ducks. she sold 272 chickens and 16 ducks. She then had half as many chickens as ducks. How many chickens does she have?

Answers

The number of chickens she had was 352

Applications of equations

From the question, we are to determine the number of chicken she has

Let c represent chicken

and d represent ducks

From the given information,

Mrs. Anderson had twice as many chickens as ducks

c = 2d ---------- (1)

She sold 272 chickens and 16 ducks and then had half as many chickens as ducks

(c-272) = 1/2(d -16) ---------- (2)

Put equation (1) into (2)

2d - 272 = 1/2(d - 16)

2(2d - 272) = d- 16

4d - 544 = d - 16

4d - d = 544 - 16

3d = 528

d = 528/3

d = 176

Substitute the value of d into equation (1)

c = 2d

c = 2(176)

c = 352

Hence, the number of chickens she had was 352

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Which piece of additional information can be used to prove triangle cea triangle cdb

Answers

Answer:

well I don't get the question

20 PIONTSSS TO WHOEVER ANDWER THIS QUESTION !!! NEED HELP

Answers

The surface area of prism 1 is 36 cm²

Calculating surface area

From the question, we are to calculate the surface area of prism 1

From the given information, we have that the two hexagon-based prism are similar

Since the shapes are similar, we can write that

(Length of a side in prism 1)² / (Length of the similar side in prism 2)² =

Area of prism 1 / Area of prism 2

From the given information,

Length of a side in prism 1 = 3 cm

Length of the similar side in prism 2 = 8 cm

Area of prism 2 = 256 cm²

Thus,

3² / 8² = Area of prism 1  / 256

Area of prism 1 = (256 × 3²)/ 8²

Area of prism 1 = (256 × 9)/ 64

Area of prism 1 = (2304)/ 64

Area of prism 1 = 36 cm²

Hence, the surface area of prism 1 is 36 cm²

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Select the correct answer. A linear function graph of the x-axis and y-axis has a diagonal line that passes the x-axis at (minus 0.5, 0), and the y-axis at (0, 1) In the function above, the slope will be multiplied by , and the y-value of the y-intercept will be increased by 3 units. Which of the following graphs best represents the new function?

Answers

Answer: Graph Y

Step-by-step explanation:

Common significance levels are 0.01 and 0.05. why would it be unwise to use a significance level with a number like 0.0483?

Answers

Common significance levels are 0.01 and 0.05. Because the observations in the sample do not come from a random pool, it is impossible to conduct a test based on a population percentage by utilizing the normal approximation approach. This is further explained below.

What is probability?

Generally, The possibility of an occurrence may be quantified using the concept of probability. There are many occurrences that cannot be foreseen with complete accuracy.

In conclusion, Both 0.01 and 0.05 are considered to be significant values. It is not feasible to perform a test based on a population percentage using the normal approximation technique because the observations in the sample do not originate from a random pool. This makes it impossible to utilize the normal approximation approach.

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place 3 numbers between 12 and 60 to make a sequence of 5 numbers with a common difference

Answers

Answer:

12-24-36-48-60

if I'm wrong I will try to get back to you and right my wrong

Triangle RST has sides measuring 22 inches and 13 inches and a perimeter of 50 inches. What is the area of triangle RST? Round to the nearest square inch.

Heron’s formula: Area
19 square inches
37 square inches
60 square inches
95 square inches

Answers

Using the Heron's formula, the area of the triangle is: D. 95 square inches.

What is the Heron's Formula?

Area = √[s(s - a)(s - b)(s - c)] where s is half the perimeter, or (a + b + c)/2.

Given the following:

s = semi-perimeter = 1/2(50) = 25 in.

a = length of side a = 22 in.

b = length of side b = 13 in.

c = length of side c = 50 - 22 - 13 = 15 in.

Plug in the values

Area = √[25(25 - 22)(25 - 13)(25 - 15)]

Area = √[25(3)(12)(10)]

Area ≈ 95 square inches.

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Answer:

d

Step-by-step explanation:

After a special medicine is introduced into a petri dish full of bacteria, the number of bacteria remaining in the dish decreases rapidly.
The relationship between the elapsed time ttt, in seconds, and the number of bacteria, B_{\text{second}}(t)B
second

(t)B, start subscript, start text, s, e, c, o, n, d, end text, end subscript, left parenthesis, t, right parenthesis, in the petri dish is modeled by the following function:
Bsecond(t)=6000⋅(1516)t
Complete the following sentence about the rate of change in the number of bacteria in minutes.

Answers

After a special medicine is introduced into a petri dish full of bacteria, Every second, the number of harmful bacteria remaining in the body decays by a factor of 0.97

What is bacteria?

Generally, a kind of unicellular bacteria that has characteristics with many disease-causing organisms, such as having a cell wall but lacking organelles and an organized nucleus.

In conclusion, When a certain medication is put into a petri dish that is full of bacteria, the amount of pathogenic bacteria that are still present in the body decreases by a factor of 0.97 every single second.

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An angle measures 8.8° more than the measure of its complementary angle. What is the measure of each angle?

Answers

Based on the definition of complementary angles, the two angles are: 49.4° and 40.6°.

What are Complementary Angles?

Angles that are complementary angles have a sum of 90 degrees.

Let the angle be represented as x

Complement of the angle = (90 - x)

Therefore, we would have:

x = (90 - x) + 8.8

x = 90 - x + 8.8

x = 98.8 - x

x + x = 98.8

2x = 98.8

x = 98.8/2

x = 49.4°

The second angle would be: 90 - 49.4 = 40.6°

The angles are 49.4° and 40.6°.

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The ratio of color paper to white is 3:8, if there is 48 white paper how many is colour

Answers

There might be 18 colored papers.

colored papers to white papers:

3:8

48 white papers

8x6 = 48

Then 3x6= 18

There might be 18 colored papers.

Ratios evaluate numbers, normally through dividing them. in case you are evaluating one facts factor (A) to another statistics factor (B), your formulation might be A/B. this indicates you are dividing data A by using information B. for example, if A is 5 and B is 10, your ratio will be 5/10.

In mathematics, a ratio indicates how many times one quantity incorporates some other. for instance, if there are 8 oranges and six lemons in a bowl of fruit, then the ratio of oranges to lemons is 8 to 6. further, the ratio of lemons to oranges is 6:8 and the ratio of oranges to the full amount of fruit is 8:14.

Ratios can be absolutely simplified just like fractions. To simplify a ratio, divide all the numbers in the ratio through the same wide variety until they can not be divided anymore.

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what is x and y? i’m having trouble finding what x and y are

Answers

Answer:

y is 7, x is 14

Step-by-step explanation:

This is a 30-60-90 triangle,

The hypotenuse, the side opposite of the 90 degree angle, is twice the length of the side opposite of the 30° angle,

The side opposite of the 60° degree angle, is root 3 times the side opposite of the 30° degree angle

So y is

[tex] \frac{7 \sqrt{3} }{ \sqrt{3} } = 7 = y[/tex]

Then, that means x is

[tex]7 \times 2 = 14[/tex]

Anna is reading a 300-page book. She can read a page in two minutes. If she has finished reading 75 percent of the pages, how many minutes of reading does she have left

Answers

Answer:

150 minutes

Step-by-step explanation:

If Anna read 75% of her 300-page book, then she has already read:

300 × 75%

= 300×0.75

= 225

225 pages.

If Anna has already read 225 pages, then she has:

300 - 225 = 75

75 pages left still to read.

If Anna reads 2 minutes per page, then she has

75 × 2 = 150 minutes.

She has 150 minutes of reading left to finish her book.

By the way, it's weird to say you have 150 minutes of something to do. In real life 150 minutes = 2 1/2 hours. jfyi. Have a great day!

What is the result of taking the difference between sample means, minus the null hypothesized difference, divided by the standard error of the difference between means?

Answers

The result of taking the difference between sample means, minus the null hypothesized difference, divided by the standard error of the difference between means is the t-statistic.

What is a t-statistic?

When deciding whether to accept or reject the null hypothesis in a T test, the t-statistic is used. It functions similarly to a Z-score in that you choose a cutoff point, calculate your t score, and then compare the two. When you have a limited sample size or don't know the population standard deviation, you utilize the t-statistic.

On its own, the t-statistic doesn't actually reveal much. Similar to how the word "average" is meaningless on its own without any context.

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Suppose you start at the origin, move along the x-axis a distance of 6 units in the positive direction, and then move downward parallel to the z-axis a distance of 4 units. What are the coordinates of your position

Answers

The coordinates of your position are (6, 0, -4).

Angle 0 intersects the unit circle at point (-0.9483, -0.3173). What is the value of tan(0)

Answers

The tangent in the unit circle is equal to 0.334.

How to calculate the value of the function tangent with the help of a unit circle

In trigonometry, unit circles are representations of a circle with radius 1 and centered at the origin of a Cartesian plane commonly use to estimate and understand angles and trigonometric functions related to them.

Angles are generated by line segments whose coordinates are of the form (x, y), where x is the position of the terminal point along the x-axis and y is the position of the terminal point along the y-axis.

In addition, the tangent of the angle generated in a unit angle is defined by the following equation:

tan θ = y / x     (1)

If we know that x = - 0.9483 and y = - 0.3173, then the tangent of the angle generated in the unit circle is:

tan θ = (- 0.3173)/(- 0.9483)

tan θ = 0.334

The tangent in the unit circle is equal to 0.334.

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ASAP PLEASEEEEE: The perimeter of a triangle is 44 inches.If one side is 5 inches longer than the smallest side and another side is 1 inch less than twice the smallest side, how many inches are there in the smallest side?

Answers

The measure of the smallest side of the triangle is 10 inches

Perimeter of a triangle

A triangle is a shape that has 3 sides and angles. The perimeter of a shape is defined as the sum of the sides of the figure.

Let the length of the smallest side be x

If one side is 5 inches longer than the smallest side, then;

L1 = x + 5

If another side is 1 inch less than twice the smallest side, then;

L2 = 2x - 1

Take the sum to have:

x+x+5+2x-1 = 44

4x+4= 44

Subtract 4 from both sides

4x =44 - 4

4x = 40

Divide both sides by 4

x = 40/4

x = 10

Hence the measure of the smallest side of the triangle is 10 inches

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13. If 3x = xy - 5 and y = 6, what is the value of x? (A) (C) / (B) 3) - 5 (D) slas1 5 اقعا our win​

Answers

Answer:

x = 5/3

Step-by-step explanation:

3x = xy - 55

3x = x*6 - 5

3x = 6x - 5

3x = 5

x = 5/3

Use the graph to find the solution.

Given the graph of w(x), w(2) = ?

(the graph is below)

THE FIRST ANSWER WILL GET BRAINLIEST OR 5 STARS! PLEASE ANSWER QUICK :)

Answers

Answer:

W(2) = 5

Step-by-step explanation:

Because when you look at the graph, the y value is 5 when the x value is 2.

Answer:

w(2) = 5

Step-by-step explanation:

by using rise over run to find the slope easily, you get a slope of 4 and an equation of w(x) = 4x - 3, -3 being the y-intercept

to calculate w(2):

w(2) = 4(2) - 3

w(2) = 8 - 3

w(2) = 5

or you could just look at when y is 2 and see that the corresponding x value is 5 but i wanted to provide a longer explanation in case :)

Question 6 of 25
A high school teacher grades a math test. She wants to see the numerical
grade of each student. Which item should she use so she can quickly see
how many students got each score?
A. None of these
B. Frequency table
OC. Line plot
OD. Pie chart

Answers

The answer to this question is B

Which one of the following foods is the top source of protein chosen by Americans in the United States?

Answers

What are the options?

Answer:

The correct answer is beef

Step-by-step explanation:

I took the quiz and got it correct

i need help with this page

Answers

This is all I can do for now, I might be back to solve the rest, I’m sorry.

Find the missing side length in the image below.

Answers

Answer:

6 is the ?

Step-by-step explanation:

Hurricane Andrew swept through southern Florida causing billions of dollars of damage. Because of the severity of the storm and the type of residential construction used in the semitropical area, there was some concern that the average claim size would be greater than the historical average hurricane claims of $24,000. Several insurance companies collaborated in a data gathering experiment. They randomly selected 84 homes and sent adjusters to settle the claims. In the sample of 84 homes, the average claim was $27,5000 with a population standard deviation of $2400. Is there sufficient evidence at a 0.02 significance level to support the claim that the home damage is greater than the historical average? Assume the population of insurance claims is approximately normally distributec. Compute the value of the test statistic.

Answers

The value of the t test is 13.36, we have to conclude that there is sufficient evidence that suggests that insurance adjustment was greater than $2400.

The hypothesis formulation

H0: u = 24000

H1: u > 24000

This test is a right tailed test

we have n = 84 homes

bar x = 27500

s = 2400

Next we have to find the test statistic

The formula for this is given as

[tex]t = \frac{x-u}{s/\sqrt{n} }[/tex]

When we out in the values we would have

[tex]t = \frac{27500-24000}{2400/\sqrt{84} }[/tex]

This would give us the answeer of the t test as

t test = 13. 3658

We have alpha = 0.02

the degree of freedom = 84 - 1 = 83

we have to find tα/2, df

=  ±2.0865

Given that the value of the test statistic is greater than critical value we would have to then reject the null hypothesis.

Hence the conclusion that we can make is that there is sufficient evidence that suggests that insurance adjustment was greater than $2400.

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The ratio of butter:flour:sugar in a recipe is 1:9:6. When using 8 cups of sugar in this recipe, how many total cups of ingredients will be used

Answers

Answer:

21 and a third cups bxisjsbdn

A rectangular rug is 12.5 feet long and 10 feet wide. The rug needs to be reduced by a factor of One-fifth. What is the area of the reduced rug?

Answers

The area of the reduced rug is 25 square feet

How to determine the area?

The dimensions are given as:

Length = 12.5 feet

Width = 10 feet

The area is calculated as:
Area = Length * Width

So, we have:

Area = 12.5 * 10

Evaluate

Area = 125

When reduced by one-fifth, we have:

Area =1/5 * 125

Evaluate

Area = 25

Hence, the area of the reduced rug is 25 square feet

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You start driving west for 20 miles, turn left, and drive south for another 14 miles. At the end of driving, what is your straight line distance from your starting point? Round to the nearest tenth of a mile

Answers

by using these measurements and drawing out a triangle, you have two sides “a” and “b” and are trying to find “c”. using pythagorean theorem you can determine that “a^2 + b^2 = c^2”. plug in your distances (20 and 14) and you get 24.4 as your distance.

Answer:

24.4

Step-by-step explanation:

The polygon circumscribes the circle. Which of the following is the perimeter of the polygon?
A. 39 cm
B. 56 cm
C. 61 cm
D. 78 cm

Answers

The perimeter of the polygon that circumscribes the circle is 78 cm

What is an equation?

An equation is an expression that shows the relationship between two or more variables and numbers.

The circle tangent theorem states that tangents which meet at the same point are equal in length. Hence:

The missing lengths are 8, 6, 9 and 16.

Perimeter of the polygon = 2(8) + 2(6) + 2(9) + 2(16) = 78 cm

The perimeter of the polygon that circumscribes the circle is 78 cm

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How many triangles are there?

Answers

Answer:

15 triangles.

Step-by-step explanation:

just count them eventually you will reach there.

Which expressions represent rational numbers? Check all that apply

Answers

The expressions that represent rational numbers are; √64 + 6/11, √16 + √169 and 17.43 + √49.

What are the rational expressions?

A rational number is simply any integer, terminating decimal/repeating decimal or fraction.

1) √6 + √9 = √6 + 3Not rational

2) √64 + 6/11 = 94/11Rational number

3) √36 + √21 = 6 + √21Not rational

4) √16 + √169 = 17Rational number

5) 17.4343434343434343 + √49 = 24.43434343 Rational number

6) √44 + √25 = 2√11 + 5 Not rational

Therefore, the expressions that represent rational numbers are; √64 + 6/11, √16 + √169 and 17.43 + √49.

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After working 80 hours at his job, Tyshawn earned a total of $1080. How much does Tyshawn earn
per hour?

Answers

The amount  Tyshawn earn per hour is $13.5

Ratio and proportion

Fractions are written as a ratio of two integers

If after working 80 hours at his job, Tyshawn earned a total of $1080, then;

80 hrs = $1080

In order to calculate the amount earned per hour

Amount per hour = 1080/80

Amount per hour = $13.5

Hence the amount  Tyshawn earn per hour is $13.5

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an ac voltage of peak value 89.6 v and frequency 49.5 hz is applied to a 23 f capacitor. what is the rms current? Still consider using anomaly detection for intrusion detection. Let's analyze a case. Suppose Alice's computer has 4 files (not realistic but for easy calculation...), and here are some data: Fo F1 F2 F3 Filename Over time Access Rate (On) 0.2 0.1 0.4 0.3 Recent Access Rate (Rn) 0.15 x 0.45 Y Suppose ER=0(On Rm) < 0.1 means normal 1. (1.5 pts) Give an example X & Y so the recent access rate will be considered abnormal. Show the equation you used to get your X & Y. 2. (1.5 pts) How much to differ on average for each file at the maximum so that it won't trigger an alarm while "working" towards Trudy's desired frequency? Show your equation used. Edit View Insert Format Tools Table 12pt Paragraph | B BI U Av av TP w : Questiestion 5Theframes.O riggingdescribes the addition of the cinematographic cues that the animator aO model sheetO music bedO visual treatment historically, demand has averaged 6105 units with a standard deviation of 243. the company currently has 6647 units in stock. what is the service level? The double dot plot blow shows the quiz scores out of 20 points for two different class periods. Compare the centers and variations of that two populations. Round to the nearest tenth. Write an inference you can draw about the two populations given the least squares regression line y hat= -2.88 1.77x, and a coefficient of determination of 0.81, the coefficient of correlation is: safety: while setting up a micro-boiling point determination you accidently break a capillary tube. you should: Suppose a variable is normally distributed, with mean 248.3 and standard deviation 22.8. A. What is P(200 X 5300)? Select B. What is Plx 2 275)? Select C. What x-values are in the top 10%? I Select Question 15 2 pts Suppose a variable is normally distributed, with mean 248.3 and standard deviation 22.8. A. What is the standard error for a sample of 100? Select] B. What is the probability a sample of 100 will have a sample mean of 240 or less? Select Question 16 3 pts The average weight of an adult male Maine Coon cat is 20 pounds with standard deviation 3.5 pounds. What is the probability an adult male Maine Coon will weigh: A. less than 20 pounds? [ Select B. more than 25 pounds? [ Select C. What are the weights of the heaviest 5% of adult male Maine Coons? [Select Which list shows the compounds in order from most acidic to least acidic? (A) 3>2> 1 (C) 3>1>2 HCC C-H 2 HCO-H 3 H3CHN-H (B) 2>1>3 (D) 1>3>2 Which of the following would be classified as a vascular plant?a. a portobello mushroomb. peat mossc. algaed. a rosebush which conditions should not be present in order for group incentive systems to effectively motivate performance? A. The organizational culture must support group cooperation. B. The group's members must believe they can achieve the objectives. C. There must be group performance measures. D. There must be individual performance measures. Rewrite 36 + 8 using the distributive property with the greatest common factor located in front of the parentheses A logical and probable explanation for the movement of the Earths tectonic plates is:Group of answer choicesa. the breakup of the plates by volcanic eruptions and earthquakesb. the rapid shrinking of Earth's crust as it slowly coolsc. the result of heat convection in the plastic mantle rock which moves the cold brittle crust on topd. the rotation of the Earth causes the plates to drag across the top of the mantle how can one primary mrna result in several polypeptrides with different amino acid sequences? explain the differences among the nominal interest rate, the real interest rate, and the expected real interest rate. which interest is most important to a borrower and lender A bag of pennies weighs 5. 1 kilograms. Each penny weighs 2. 5 grams. About how many pennies are in the bag?A:20B:200C:2,000D:20,000 A thin film of polystyrene of refractive index 1.49 is used as a nonreflecting coating for Fabulite (strontium titanate) of refractive index 2.409.What is the minimum thickness of the film required? Assume that the wavelength of the light in air is 550nm . How many ml is 0.5 g of t-butanol? Simplify the following expression. d/dx integration x^3 8 dp/p^2 d/dx integration x^3 8 dp/p^2 = Summary: How did Deng Xiaoping get started as a leader? (Childhood, anything before his leadership)