The population of a country doubles in 81 yrs. How many years will it be five times as much?

Q: you have one-fifth of a energy drink left. If you drink one-fifth of that, how much of your energy…

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Q: The number of bacteria doubles each day. How many bacteria will a sample have after 13 days if it…

A: We have to find how many bacteria will a sample have after 13 days if it starts with 40 bacteria.

Q: The population of a city decreases by 3.4% per year. If this year’s population is 204,000 what will…

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Q: Suppose that a university had an enrollment of 9000 students in 1991 and each year thereafter…

A: The initial number of students in 1991 is 9000. It is given that every year the students increase by…

Q: On average, a person devotes 34 years to sleeping and watching tv. The number of years sleeping will…

A:

Q: How many average candy bars would you have to eat to ­supply the energy needed for 8 hours of…

A: Consider the given statement. Known fact: 1 candy bar supplies 1×106 Joules and one hour of running…

Q: if an object costs $555 when new, and $80 after 5 years, what does it cost after 3 years?

A:

Q: A city's population is currently 29,000 and is growing by 3.9% each year. If this continues, in how…

A:

Q: A machine that drills holes for wells drilled to a depth of -72 feet in one day (24 hours). At this…

A: Given Machine drills holes for wells to a depth of -72feet in 24 hours we have to find how many…

Q: How many minutes did it take the faster runner to finish the 8 mile run?

A: Let the distance be 8 mile, Pepe averaged a speed of 1/2 mile in 4.5 minutes where Paula averaged…

Q: The half-life of the radioactive element krypton-91 is 10 seconds. If 16 grams of krypton-91 are…

A: Given: The half-life of the radioactive element krypton-91 is 10 seconds.

Q: If a gorilla weighs 600kg and each month he loses 3.12% of his weight. How much will the gorilla…

A:

Q: A population of cats multiplies 6-fold in 4 years. After 20 years, how many times as great is the…

A:

Q: A population of 10 hamsters will triple every year. What will be the population after 7 years?…

A: Given: A population of 10 hamsters will triple every year…

Q: If two cats eat a kilogram of cat food in 4 days, how long will it take for 5 cats to eat 25kg of…

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Q: The population of a country doubles in 50 yrs. How many years will it be 7 times as much?

A: The population of country becomes double in 50 years.

Q: A man saves $480 a month for 12 months and $350 the following month.how much does he save in total

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Q: A town has a population of 12000 and grows at 3.5% every year. What will be the population after 7…

A: To find the population after 7 years.

Q: How many milligrams of medication is required for a 71kg patient if the dosage is 10 mg for every…

A: Given information The dosage is 10 mg for every 10 kg. We have to find the number of milligrams of…

Q: How many calories per day does a person who weighs 80 kilograms (approximately 176 pounds) need to…

A: Given, A person weighs 80 kilograms. To find how many calories per day a person needs: The function…

Q: A certain population of bacteria doubles in 2yrs. If in 3yrs there are 45,790 of bacteria present,…

A: A certain population of bacteria doubles in 2 years. Let Pt be the population of bacteria at any…

Q: If one earthquake has magnitude 6.5 on the Richter scale, what is the magnitude of another quake…

A: If one earthquake has magnitude 6.5 on the Richter scale, then the magnitude of another earthquake…

Q: A population of bacteria doubles every 2.79 hours. How long would it take for the bacteria to…

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Q: Suppose that a piano costs $5,000 and loses 20% of its value each year. What will be the value of…

A: This question is about application of profit and loss of a product

Q: A culture of bacteria doubles every hour. If there are 500 bacteria at the beginning, how many…

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Q: According to​ statistics, a person will devote 3131 years to sleeping and watching TV. The number of…

A:

Q: A colony of 7,800 bacteria doubles in size every 429 minutes. What will the population be 858…

A:

Q: - The population of a country doubles in 82 yrs. How many years will it be five times as much?

A: We have to solve given problem:

Q: The average person breathes 6 times per minute (at rest), inhaling and exhaling half a liter of air…

A: Given:The average person breathes 6 times per minute (at rest), inhaling and exhaling half a liter…

Q: A wool tapestry is 32 years older than a linen tapestry. Twenty years ago, thewool tapestry was…

A: Given: A wool tapestry is 32 years older than a linen tapestry. Twenty years ago, thewool tapestry…

Q: Last year, a 20-acre field yielded 2,700 bushels of corn. At the same rate, how many acres would be…

A: Total bushels of corn are yield in 20 acre field is 2700.

Q: We have 25 days of school left how many weeks of school is that?

A:

Q: Light travels at a rate of 186,000 miles per second. If our moon is 238,860 miles from Earth, how…

A: We know, Speed = DistanceTime ⇒ Time = DistanceSpeed

Q: If $5,000 is invested at 7% annual interest, how long does it take to be worth $6750?

A: Initial amount =P= 5000  Final amount = 6750  So interest =I= 6750-5000= 1750  Interest rate = 7%=…

Q: If a bacteria culture starts with 6000 bacteria and doubles every 25 minutes, how many minutes will…

A: To find the time taken to reach the population 42000, we have to find the equation representing the…

Q: If a truck gets 14 miles to the gallon on average, how much carbon dioxide is emitted into the…

A:

Q: The​ half-life of caffeine in a​ person's bloodstream is about 6 hours. If a​ person's bloodstream…

A: The formula for half-life:

Q: how much bacteria is present after 18 minutes?

A:

Q: How many days would it take to breathe one billion times if you were breathing at a rate of 12 times…

A: 1 billion times =100 crores

Q: A culture of bacteria doubles every 2 hours. If there are 500 bacteria at the beginning, how many…

A: The initial population, P0=500Time of growth, t=24 hourstime of doubling, d=2 hours

Q: An Oriental rug is 52 years old and a Persian rug is 16 years old. How manyyears ago was the…

A: Let x years ago the Oriental rug was four times as old as the Persian Rug.  x years ago the Oriental…

Q: A pitcher is 30 years old, and a vase is 22 years old. How many years ago wasthe pitcher twice as…

A: let x years ago the pitcher twice as old as the vase x years ago the pitcher was (30-x) years old x…

Q: The population of a town is 2,197 and it grows by 11% each year. What will the population be in 9…

A:

Q: A water hose had filled up of a pool after this rate, how many hours would it take to fill the pool?…

A: Given that  1/7 pool is to be filled in 1/10 hour To find total hours to fill the pool

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

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Q: The halflife of Radium-226 is 1590 years. If a sample contains 500 mg, how many mg will remain after…

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Q: An adult takes 400 mg of ibuprofen. Each hour, the amount of ibuprofen in the person's system…

A: Given that an adult takes 400 mg of ibuprofen and each hour, the amount of ibuprofen in the person's…

Q: According to statistics, a person will devote 31 years to sleeping and watching TV. The number of…

A: To find: The number of years will the person spend on each of these activities. Given information: A…

Q: The count of a bacteria in a culture was 5 initially and doubles every 30 minutes. Find the size of…

A:

Q: Assume an average human heart beats 65 times per minute and an average human lifetime is 80 years.…

A: Average life span of human being is 80 years.The rate of heartbeat is 65 beats per minute.

Percentage

A percentage is a number indicated as a fraction of 100. It is a dimensionless number often expressed using the symbol %.

Algebraic Expressions

In mathematics, an algebraic expression consists of constant(s), variable(s), and mathematical operators. It is made up of terms.

Numbers

Numbers are some measures used for counting. They can be compared one with another to know its position in the number line and determine which one is greater or lesser than the other.

Subtraction

Before we begin to understand the subtraction of algebraic expressions, we need to list out a few things that form the basis of algebra.

Addition

Before we begin to understand the addition of algebraic expressions, we need to list out a few things that form the basis of algebra.