Find how much more energy was released by an earthquake of magnitude 6.9 than by an earthquake of magnitude 6.4.

Q: The 1906 San Francisco earthquake had a magnitude of 7.9 on the MMS scale. Around the same time…

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Q: In a certain culture of bacteria, the number of bacteria increased sixfold in 10 h. How long did it…

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Q: Solve for mW=bd/m

A: Multiply both the sides of the equation by m as shown on the board

Q: The half-life of the plutonium isotope is 24,360 years. If 10 g of plutonium is released into the…

A: It is given that the half-life of the plutonium isotope is 24,360 years. Use formula, an exponential…

Q: The mass of caffeine in the bloodstream decreased rapidly at first, and then more slowly.

A: Given statement: The mass of caffeine in the bloodstream decreased rapidly at first, and then more…

Q: It takes 15 minutes for a 100° C object to cool to 80° C in a room at 30° C. How much longer will it…

A: We will find out the required time

Q: The half-life of strontium-90 is 28 years. How long will it take a 40 mg sample to decay to a mass…

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Q: A radioactive substance has a half-life of 64 hours. If 200 grams of the substance are initially…

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Q: If 8 g of a radioactive substance are present initially and 4yr later only 4.0g​ remain, how much of…

A: Initially 8 gm is present. After 4 yrs, 4 hm remained. To calculate after 9 yrs.

Q: Consider an object in a surrounding with constant temperature of 25°C. If the temperature of the…

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Q: If a solid is placed in water, the amount undissolved after t seconds is A(t) Aoe-kt. If 30 grams of…

A: Since, we know that the amount of solid undissolved after t seconds is given by:-A(t)=Aoe-ktAlso, we…

Q: This year there were 3,000 new births in a county, but new births are expected to grow at a rate of…

A: This year there were 3,000 new births in a county, but new births are expected to grow at a rate of…

Q: A hospital prepares a 200 mg supply of molybdenum-99 which has a half-life of 66 hours. How much…

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Q: The 1906 San Francisco earthquake had a magnitude of 7.9 on the MMS scale. Around the same time…

A:

Q: The half-life of a radioactive substance refers to the amount of time it will take for the quantity…

A: Given that: Half life of Q is: T=20 years In 2015 Initial amount: N0=100 g a). How much will be at…

Q: If a piece of machinery depreciates continuously at an annual rate of 4%, how many years will it…

A: To find: The number of years it will take for the value of machinery to halve. Concept used: The…

Q: It takes 15 minutes for a 100° C object to cool to 65° C in a room at 30° C. How much longer will it…

A: GivenFor the given information

Q: The half-life of carbon-14 is about 5730 years. If 1 gram of carbon-14 is present in a sample, how…

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Q: The half-life of Carbon-14 is 7 years. How much of an initial 131 g sample will remain after 45…

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Q: In a certain culture of bacteria, the number of bacteria increased sixfold in 10h. How long did it…

A:

Q: if 8 g of a radioactive substance are present initially and 4 yr later only 4 g remain, how much of…

A:

Q: The half-life of plutonium-241 is approximately 13 years. How much of a sample weighing 4 g will…

A: The half-life of plutonium-241 is 13 years. We have to find how much sample of 4 g will remain after…

Q: An element with mass 490 grams decays by 28.6% per minute. How much of the element is remaining…

A: There is a decay of element at the rate of 28.6% per minute. Initially the mass of element given is…

Q: A lighthouse, L, is on an island 4 mi away from the closest point, P, on the beach. If the…

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Q: The half-life of strontium-90 is 28 years. How many years will it take a 56 mg sample to decay to a…

A: Given : Half -life of strontium-90 is 28 years . T1/2 = 28 years

Q: The half-life of strontium-90 is 28 years. How long will it take a 44 mg sample to decay to a mass…

A: We can solve this as follows:

Q: A piece of machinery valued at $30,000 depreciates at a rate of 10% yearly. How long will it take…

A:

Q: An

A: Given,element with mass = 510 gramsdecay rate = 26.3% per minuteour aim is to find how much of the…

Q: A certain radioactive substance has a half-life of 38 hours. Find how long it takes for 90% of the…

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Q: The 1906 San Francisco earthquake had a magnitude of 7.9 on the MMS scale. Around the same time…

A:

Q: The 1906 San Francisco earthquake had a magnitude of 7.9 on the MMS scale. Around the same time…

A: Given that:   The 1906 San Francisco earthquake had a magnitude of 7.9 on the MMS scale. Around the…

Q: One earthquake occurred at 58° North latitude and had a magnitude of 1.4. What is the value of the…

A: The regression equation is given by y = -3.05 + 0.10x Where x = location of earthquake y = magnitude…

Q: An element with mass 640 grams decays by 7:3% per minute. How much of the element is remaining after…

A: Given intial mass =640 gmsRate of decay=7.3% per miniutetime =8 minute

Q: A certain radio isotope has a half-life of 12 years. Find the mass that remains from a 220mg sample…

A: Half life = 12 yrs 220 mg is the initial mass Therefore decay constant = ln2 / half- life

Q: The 1906 San Francisco earthquake had a magnitude of 7.9 on the MMS scale. Around the same time…

A: Here , we use the magnitude M of an earthquake is defines as M=logIS,  where I is the intensity of…

Q: was an earthquake in South America with magnitude 4.3 that caused only minor damage. How many times…

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Q: The half-life of strontium-90 is 28 years. How long will it take a 60 mg sample to decay to a mass…

A: This can be solved using the following way....

Q: The 1906 San Francisco earthquake had a magnitude of 7.9 on the MMS scale. Around the same time…

A:

Q: The 1906 San Francisco earthquake had a magnitude of 7.9 on the MMS scale. Around the same time…

A:

Q: An element with mass 490 grams decays 28.6% per minute. How much of the element is remaining after…

A:

Q: If 16 g of a radioactive substance are present initially and 9 yr later only 8 g​ remain, how much…

A:

Q: An element with mass 430 grams decays by 27.4% per minute. How much of the element is remaining…

A: We need to find the exponential function representing the decay of the element.

Q: A 50-mg sample of a radioactive substance decays to 34 mg after 30 days. How long will it take for…

A: The radioactive decay is modelled using the equation: N(t)=N0e-kt, where N0 is the initial amount…

Q: If 16 g of a radioactive substance are present initially and 5 yr later only 8 g​ remain, how much…

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Q: If you leave a 100-W light bulb on for a week, how many joules of energy will be consumed?

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Q: The half-life of a radioactive material is about 34.2 years. How much of the material is left after…

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Q: A radioactive substance has a half-life of 4 hours. How much of it is left after 12 hours?

A: Since, a radioactive substance has a half-life of 4 hours.Our aim is to calculate the amount of…

Q: Each side of a square is increasing at a rate of 2 cm/s. At what rate (in cm²/s) is the area of the…

A: RECALL: Area of the square , A= a2 ; where 'a' is the side of the square. Volume of the cylinder,…

Q: The​ half-life of radium is 1690 years. If 40 grams are present​ now, how much will be present in…

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Q: A certain radioactive substance has a half-life of 38 hour. Find how long (in hours) it takes for…

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Contingency Table

A contingency table can be defined as the visual representation of the relationship between two or more categorical variables that can be evaluated and registered. It is a categorical version of the scatterplot, which is used to investigate the linear relationship between two variables. A contingency table is indeed a type of frequency distribution table that displays two variables at the same time.

Binomial Distribution

Binomial is an algebraic expression of the sum or the difference of two terms. Before knowing about binomial distribution, we must know about the binomial theorem.