# A model rocket is launched from a roof of a building. Its path is described by the relationship h=-5t*2+35t+10, where h is the height in metres and t is the time in seconds. How tall is the building? What is

13,356 questions, page 73-
## Science

PLEASE HELP 1. Katie is bowling. She starts with the ball in her right hand and her arm as far back as it will go. She swings the ball forward, applying a force of 78 Newtons the whole time. When her hand has traveled through a path of 0.9 meters, she

*asked by Alex on April 4, 2016* -
## algebra

A rectangular storage building is 30 feet long and 25 feet wide. Find the ratio of the length to the primeter of the bulding. now I divided 30 by 25 and got 1.2 feet is that correct?

*asked by christopher on April 13, 2010* -
## physics

A spherical mass 'm'is dropped vertically off a building starting from rest and 'y=0'.the mass experience a resistive force 'FR=-bv'.let 'r=b/m'.find the position'y(t)'of mass??? pizzzzzzzzzzz help me.........

*asked by m sani on April 30, 2012* -
## calculus

a ball is thrown upward at 96 feet per second from the top of a 100 foot building. 1.when will the ball obtain maximum height 2. when will the ball hit the ground?

*asked by chris on October 24, 2011* -
## Science

What building blocks are starches made of? What is the difference between sugar and starch? What term describes the size of a starch? What molecule has to be added to a starch to break it down?

*asked by Hannah on October 7, 2013* -
## physics

object a does a freefall motion from an 80-m building and object b thrown upward from the base at the same time. they collide after 2s. find the initial velocity of object b. height is 80 m.

*asked by flay on January 9, 2013* -
## English

I need a peer reviewed journal source and a magazine article source on bureacracy model of Criminal Justice..thank you also what is the difference in an internet source and a web page?

*asked by Amanda on September 25, 2007* -
## maths

2 . Put the following macroeconomic model into matrix format using Y, C and T as the variables and find the determinant of the matrix of coefficients. There is no need to solve the equations. Y = C + I C = a + b (Y – T) T = tY Kindly help me with

*asked by Asfand on November 30, 2016* -
## Alg. 2

In 2000 the deer population in NJ was 35000. In 2015 that number decreased to 21000. If the population can be modeled with an exponential decay model, what is the rate at which the population is decreasing?

*asked by Fern on March 25, 2015* -
## MATH Albera

Sales at a certain department store follow the model where y is the total sales in thousands of dollars and x is the number of years after 2001. What was the first year that sales fell below $50,000?

*asked by MICHELLE on December 12, 2013* -
## Math

The path of a diver is approximated by the following, where y is the height (in feet) and x is the horizontal distance (in feet) from the end of the diving board. y= (-4/9)x^2+(24/9)x+13 What is the maximum height of the diver in feet?

*asked by anonymous on March 27, 2019* -
## Pre-Calculus Help?

A biologist determines that the path of a bee from its hive to its foraging site can be described by the parametric equations x- 4t-1 and y-22+3t-4. Which of the following equations is the curve described by these parametric equations? y=20x-9 y=20x+16

*asked by ADOG on May 18, 2018* -
## 12th math

A biologist determines that the path of a bee from its hive to its foraging site can be described by the parametric equations x= 4t-1 and y=2t^2+3t-4. Which of the following equations is the curve described by these parametric equations? y=20x-9 y=20x+16

*asked by line on May 18, 2018* -
## English

Need help proofreading and editing this body paragraph this is the last body paragraph for my essay, we are supposed to write about solutions other than building empires. The Ultra-nationalism of building an empire is not the right way to preserve and

*asked by jake on January 2, 2010* -
## psychology

The observational learning approach states that stereotypes and prejudices are acquired through what? a)repressing of wants and needs excessively B)experiencing maturation of innate ideas C)watching and imitating a model’s behavior D)pairing conditioned

*asked by vedrana on October 10, 2011* -
## Physical Education

Help I need a mnemonic to remeber the following words Family Peers Role Model Fashion Media Cost Status Disability Age Race Gender Availability Location Access Time Illness Health Problems

*asked by Moira on October 15, 2010* -
## Science

Ive gotta build a model of a hydroelectric dam, preferably moving and so you can see inside it. Id love it if anyone could give me some ideas on how to do it Here is an excellent resource,with some figures that should be helpful:

*asked by Stacey on July 10, 2006* -
## Chemistry

Explain the most important reason why we have attempted to create a model of the atom and more specifically, why it was so important to understand the position and movement of an electron. These are extra credit questions so I neeeed the points but I'm

*asked by Clueless on November 15, 2017* -
## Math

Skyler = 32.35 LuiZ = 21.78 Todee= 28.19 Together= 28.19 U sing the individual times for your tema member. Erige an equation to model the work done and solve that equation for the estimated time that it takes to complete the task together.

*asked by Skyler on November 16, 2015* -
## physics

In the Bohr model of the hydrogen atom, the speed of the electron is approximately 1.97 × 106 m/s. Find the central force acting on the electron as it revolves in a circular orbit of radius 4.72 × 10−11 m. Answer in units of N.

*asked by go on May 11, 2011* -
## physics

In the Bohr model of the hydrogen atom, the speed of the electron is approximately 1.97 × 106 m/s. Find the central force acting on the electron as it revolves in a circular orbit of radius 4.72 × 10−11 m. Answer in units of N.

*asked by go on May 11, 2011* -
## child day care management,health,safety,and nutrit

Q; What are the three main factors in a readiness model? A.maturation,learning,and motivation B.height,weight,and age C.psychological,social,and physical D.age,inteligence,and agility My answer is A is that corect? tks

*asked by alex on February 16, 2011* -
## creative play

in the product-oriented approach to creative assessment,products are evaluate a. how hard the child worked b. how closely the product resembles a model c. practical workabilityd. the creativity of student's work B?

*asked by bev on February 25, 2018* -
## science

Hi. One of my science vocab words is paradigm. The definition is a model that provides a framework for interpreting observations. Okay, so I have that definition memorized, but the book doesn't provide any specific examples of paradigms, so I don't REALLY

*asked by Mia on September 19, 2007* -
## algebra 1

and I need help on this one problem This homework question was removed due to a copyright claim submitted by the National Network of Digital Schools Management Foundation (NNDS). would a graph model this problem situation?

*asked by nicki on November 23, 2013* -
## Physics

In the Bohr model of the hydrogen atom, the speed of the electron is approximately 2.1 × 106 m/s. Find the central force acting on the electron as it revolves in a circular orbit of radius 4.51 × 10−11 m. Answer in units of N

*asked by Kate on October 29, 2013* -
## Math help please

Sorreh I never really post question but I need help with this Write a real world problem that you can model with the two step equation 5x+7=10. Then solve the problem. I would really like it if Some one could explain this to me!! thanks agian ~lost gurls

*asked by Thili on November 18, 2016* -
## Math- PLEASE HELP!! I DONT GET THIS QUESTION!!

Molly bought two sweaters for $30 each and three pair of pants for $25 each. She had a 20% off coupon for her entire purchase. Model and write an expression for the amount of money Molly spent. State your answer in a complete sentence.

*asked by Crystal on March 27, 2017* -
## physics

In the Bohr model of the hydrogen atom, the speed of the electron is approximately 1.97 × 106 m/s. Find the central force acting on the electron as it revolves in a circular orbit of radius 4.72 × 10−11 m. Answer in units of N.

*asked by go on May 11, 2011* -
## Physics

In the Bohr model of the hydrogen atom, the speed of the electron is approximately 2.45 × 106 m/s. Find the central force acting on the electron as it revolves in a circular orbit of radius 5.18 × 10−11 m. Answer in units of N

*asked by Kaylee on June 22, 2014* -
## English

Im writting an essay titled I SALUTE MOTHERS,,,my points in the mind map are LOVE. MOTHERHOOD and ROLE MODEL please help me with the introduction,I started off with'Mothers are the strong hearted human beings'

*asked by Mahlogonolo on August 5, 2015* -
## physics

*asked by go on May 11, 2011* -
## Math 7th grade

I am very bad at fractions.Can anyone tell me what a multiplication sentance is? The book gave me a model. It is an expression in math or written form. John had 1/2 of the pizza, and he ate 3/8 of that. How much did he eat of the original pizza. 1/2 x 3/8

*asked by Ariana on January 3, 2007* -
## physics

A small airplane loses a bolt while traveling at a speed of 150 meters/second in the horizontal direction. The bolt follows a parabolic path and lands on the ground after 25 seconds. How far will the bolt have traveled horizontally from the point where it

*asked by Anonymous on May 12, 2013* -
## science gravity

which of the following would happen to the moon if gravity no longer affected it ? a) the moon would continue to move on it's orbital path b) the moon stop moving all together c) the moon would move in a spiral toward earth d) the moon would move in a

*asked by f on February 14, 2019* -
## science

which of the following would happen to the moon if gravity no longer affected it ? a) the moon would continue to move on it's orbital path b) the moon stop moving all together c) the moon would move in a spiral toward earth d) the moon would move in a

*asked by victoria on October 29, 2013* -
## Accounting

The City of Jamestown has agreed to acquire a new city maintenance building under a capital lease agreement. At the inception of the lease, a payment of $100,000 is to be made; nine anual lease payments, each in the amount of $100,000, are to be made at

*asked by Jill on February 11, 2010* -
## Phyics

The foci of the elliptical path for an Earth satellite are __________. A) one at Earth's center and the other elsewhere B) one atop the other at Earth's center C) both inside Earth D) both outside Earth

*asked by sarah on November 21, 2015* -
## physics

Water is to be pumped to the top of a skyscraper, which is 1270 ft high. What gauge pressure is needed in the water line at the base of the building to raise the water to this height?

*asked by Sam on May 21, 2012* -
## physics

The single cable supporting an unoccupied elevator breaks when the elevator is at rest at the top of a 155 m high building. With what speed does the elevator hit the ground?

*asked by Brittany on December 4, 2010* -
## Chemistry

Over the years, the thermite reaction (mixing of solid iron (III) oxide with aluminum metal) has been used for welding railroad rails, in incendiary bombs, and to ignite solid-fuel rocket motors. A. Write a balanced equation representing the reaction. B.

*asked by Stockton on August 6, 2013* -
## physics

Altitude of 575m with zero initial velocity; 8.0s she falls freely; rate of descent et 15m/s^2 until her rate of descent reaches 5.0m/s.At this point she adjust her rocket engine control to maintain that her rate of descent until she reaches ground. How

*asked by monica on October 8, 2009* -
## English

That building, now owned by Mrs. Bly, was once an old school. Have you read the story of Joe Louis's life? Leslie's father, Mr. Lorenzo, owns a bicycle shop downtown. Johanna, my sister, loves all forms of art.

*asked by Lynn on June 18, 2013* -
## calcus/ math

Nick has enough wire to construct a 100m of fence. he wish to use it to form three sides of a rectangular garden,one side is along his building. 1)What dimensions should be choose in order to enclose the largest possible area? 2)Verify the result thus

*asked by Jessy on December 28, 2010* -
## History

Which was a justification for imperialism? to supply lands for building industrial factories to broaden education by studies of new peoples to provide new markets for manufactured goods to build world-wide communication networks I chose B, but couldn't it

*asked by anonymouss on February 25, 2018* -
## government

a political party is an organization desiring to: A)expand learning by building libraries and universities.B)limit the role of religion in politics.C)control government by winning election and holding office.D)create jobs for all americans. i think its c

*asked by Anonymous on September 25, 2008* -
## history

Which of the following was not a primary concern of Charlemagne? establishing a central government to rule his territory building a standing army conquering Norse-held lands of Sweden and Denmark strengthening the Christian faith across Europe I think its

*asked by oscar on September 7, 2015* -
## Physics

A baseball is thrown from the rood of a 27.5m tall building with an initial velocity of magnitude 16.0m/s and directed at an angle of 37 degrees above the horizontal. A) Using energy methods and ignoring air resistance, calculate the speed of the ball just

*asked by Anonymous on April 9, 2013* -
## Algebra-based Physics

A large fish hangs from a spring balance supported from the roof of an elevator. If the elevator has an upward acceleration of 2.65 m/s^2 and the balance reads 70.0 N, what is the true weight of the fish? Under what circumstances will the balance read 34.0

*asked by Mike on September 30, 2006* -
## math

The model N = 10(4+3t)/1.25 describes the number of deer (N) in a park t years after 40 deer are introduced into the region. Approximately how long will it take the deer population to reach 224? How would I set up this equation?

*asked by jennifer on September 28, 2008* -
## Algebra

Geppetto is a puppet maker. He starts the month with 3 puppets ready to sell, and makes 9 puppets per day. Write an equation to model this situation (use d for days and p for puppets).

*asked by Rachel on June 25, 2016* -
## science Help 911!!

If new information about the behavior of atoms is discovered and verified, then revisions will need to be made to the current? A. atomic theory B. atomic model C. atomic number D. carbon cycle Is the answer A?

*asked by blue on November 14, 2014* -
## physical science

which of the following statements concerning air resitance is false? a. skydiverscan influence their speed by changing thier body positioning b. objects that fall together in a vaccum may fall at differnt speeds in air. c. it is easier for a pitcher to

*asked by deonne on April 18, 2011* -
## Physics

A set of twins work in the Sears Tower, a very tall office building in Chicago. One works on the top floor and other works in the basement. Considering general relativity, which twin will age more slowly?

*asked by Anonymous on October 30, 2014* -
## Psychology Observations

Observations • Write a 200- to 300-word response to the following: How have you used the scientific process (unsystematic observation, building theories, and evaluating propositions) in your life to better understand your personality? Provide an example

*asked by Cynthia Williamson on August 14, 2010* -
## Physics

A window washer drops a brush from a scaffold on a tall oﬃce building. What is the speed of the falling brush after 2.48 s? (Neglect drag forces.) The acceleration due to gravity is 9.8 m/s 2. Answer in units of m/s

*asked by Vanessa on September 21, 2011* -
## Algebra

A brick is dropped from the Empire State Building at a height of 324 meters. If you neglect any type of air resistance, what is the distance in meters that the ball falls during the interval between the 8th and 9th second?

*asked by Mary on September 21, 2008* -
## Physics

A window washer drops a brush from a scaffold on a tall oﬃce building. What is the speed of the falling brush after 2.48 s? (Neglect drag forces.) The acceleration due to gravity is 9.8 m/s 2. Answer in units of m/s

*asked by Vanessa on September 21, 2011* -
## English

Hello. I will be very grateful for your help. 1)Does the following sentence sound natural English: "someone fired a mortar at a building just 100 meters away from my house"? 2)Which preposition is correct in the phrase: "the bank account is opened at/ with

*asked by Nalmi on September 16, 2015* -
## PHYSICS

A heavy concrete panel is being lifted into position in a building by means of a crane (see figure below). The tension of 1.89 104 N in the supporting cable produces a torque with respect to point O. (Let L = 39.3 m.) (b) Find the torque.

*asked by cindy on March 14, 2012* -
## Physics

A ball is thrown upward from the ground with an initial speed of 21.5 m/s; at the same instant, a ball is dropped from rest from a building 17 m high. After how long will the balls be at the same height? The acceleration of gravity is 9.81 m/s2. Answer in

*asked by Anonymous on October 5, 2010* -
## physics

A penny is dropped from rest from the top of the Trump Tower in New York City. Considering that the height of the building is 283 m and ignoring air resistance, find the speed with which the penny strikes the ground.

*asked by lennox on September 6, 2012* -
## guidance

Brian comes to the block area and knocks down a building that Tim and Jody are Constructing. The most probable reason for Brian's misbehavior is that he A. has too much self-esteem.B. has lost control.C. is seeking attention.D. is destructive by nature.

*asked by Amanda on October 21, 2014* -
## Spanish

Can someone please check my work? Change the sentences, using the model as a guide. MOdelo: Paco quiere comprar los calcetines. (Paco quiere comprarlos.) (Paco los quiere comprar.) 1. Piensan cerrar la tienda a las ocho. (Piensan cerrarla a las ocho.)

*asked by Larry on April 5, 2009* -
## Physics

A current I=2.3 A flows around a continuous path that consists of portions of two concentric circles of radii a and a/2, respectively, where a=5 cm, and two straight radial segments. The point P is at the common center of the two circle segments. Calculate

*asked by s on April 26, 2013* -
## Algebra

Adam kicks the football in his backyard. The path of the football when kicked can be represented by the quadratic function y = - 16{x^2} + 85x where x is the horizontal distance (in feet) and y is the height (in feet). How far does Adam kick the football?

*asked by Zyere on December 17, 2014* -
## Math

A street light is at the top of a 17 ft tall pole. A woman 6 ft tall walks away from the pole with a speed of 8 ft/sec along a straight path. How fast is the tip of her shadow moving when she is 30 ft from the base of the pole? Must be accurate to fifth

*asked by Leah on October 5, 2014* -
## Physics

An airplane pulls into a vertical loop, and has horizontal and vertical velocities Vx=90m/s and Vy=120m/s. If the radius of curvature of the flight path is R=900m, and the airplane has a vertical acceleration Ay=11m/s^2, determine its tangential and

*asked by J.T. on July 13, 2015* -
## Physics

Two charged particles have equal mass and carry charges of 2 nC and 3 nC respectively. They enter a magnetic field of strength 2 mT at the same velocity. Assuming that both particles exit the field parallel to each other and perpendicular to the field,

*asked by Brian on August 14, 2015* -
## English

Could you tell me which words in column A have the same vowel sound as the words in clumn B. Column A Column B Path Butter Here Weight Saw Trouble Wide Put Hit-------------- File Look Weird Stool Laugh Luck Taught Heat Cheese Table Prune Pronunciation Eye

*asked by diana on December 19, 2007* -
## algebra

. On the reality TV show Last Man Standing, a package is thrown from a plane to the ocean below. The contestants must swim to the package to receive the “free pass” located inside the package. The path that the package follows can be modelled by the

*asked by k on July 11, 2016* -
## calculus

(Compute all instantaneous rate of change using the limit of the difference quotient) 2) A football's path is represented by the function h(t)=-4.9t^2 +10t+2, where h is its height, in meters, after t seconds. Find the rate of change of the football's

*asked by matt on October 15, 2016* -
## Differential Equations

A rabbit starts at the origin and runs up the right branch of the parabola y=x^2 with speed a. At the same time a dog, running with speed b, starts at the point (c,0) and pursues the rabbit. Write a differential equation for the path of the dog

*asked by Samantha on January 26, 2012* -
## math

Ellie drove from Atlanta to St. Louis and then back to Atlanta. If her odometer read 26,473 miles before she left Atlanta and 27,949 after she got back to Atlanta, how many miles was the one-way trip? (assume she traveled the same path both directions?)

*asked by Hailey9 on August 10, 2017* -
## physics

a daredevil on a motorcycle leaves the ramp with a speed of 35.0 miles per hour. if his speed is 33.0 miles per hour when he reaches the peak of his path, what is the maximum height that he reaches. ignore friction and air resistance

*asked by nelo on November 21, 2011* -
## Math

A certain part of a hiking trail slopes upward at about 10° angle. After traveling a horizontal distance of 120ft along this part of the trail. What would be the change in hiker's vertical position? What distance has the hiker traveled along the path?

*asked by Ieza on March 27, 2016* -
## Electricity and Magnetism

Consider free protons following a circular path in a uniform magnetic field with a radius of 1m. At t =0s, the magnitude of the uniform magnetic field begins to increase at 0.001 T/s . Find the tangential acceleration of the protons .

*asked by John on March 10, 2017* -
## Math

A gardener has to lay a grass lawn, leaving space for an 80 cm wide concrete path along the inside edge of a square garden with an area of 72.25 meter square. what will be the area of the grass lawn?

*asked by Deepak on March 5, 2018* -
## Calculus

A light is hung 15 ft above a straight horizontal path. If a man 6 ft tall is walking away from the light at the rate of 5 ft/sec, how fast is his shadow lengthening and at what rate is the tip of the man’s shadow moving?

*asked by Joey on October 6, 2014* -
## Physics

a student attaches a mass to the end of a 0.80 m string. The system will be whirled in a horizontal circular path at 31.5 m/s. The maximum tension the string can withstand without breaking is 250 N. What is the maximum mass the student can use?

*asked by Dee on November 1, 2011* -
## physics

ball rolls with a speed of 2 m/s across tabletop that is 1 meter above floor. Reaching edge of table, ball follows parabolic path to landing spot on floor. How far along the flor is this spot from the table? How do I set this up? Thank you.

*asked by anonymous on November 30, 2010* -
## social studies

Please check: 1. North Korea became a communist country by following the example set by Cuba (FALSE) 2. Congress set up a NASA in response to the Soviet blockade of Berlin (FALSE) 3. President Johnson tried to stop China from becoming a communist country.

*asked by Celest on June 18, 2013* -
## Modeling Exponential Growth and Decay

Information provided: Whooping Crane Population Size 1940-1996 Year # Cranes 1940 22 1950 34 1960 33 1970 56 1980 76 1990 146 1991 132 1992 136 1993 143 1994 133 1995 158 1996 159 1.) Use exponential regression to find an exponential model of the data. y=

*asked by Jake on December 19, 2011* -
## precalc

A projectile is launched from a platform 20 feet high with an initial velocity of 48 feet per second, The height h of the projectile at t seconds after launch is given by h = –16t^2 + 48t + 20 feet. (a) How many seconds after launch does the projectile

*asked by Brooke on July 12, 2015* -
## Physics(check)

7)A car is moving with a uniform speed of 15.0 m/s along a straight path. What is the distance covered by the car in 12.0 minutes? I don't know 8)What is the resultant of two displacement vectors having the same direction? The resultant is the sum of the

*asked by Jon on March 30, 2008* -
## physics

the 2lb box slides on the smooth curved ramp. if the box has a velocity of 30ft/s at A, determine the velocity of the box and the normal force acting on the ramp when the box is located at B and C. assume the radius of curvature of the path is still 5 ft.

*asked by jenny on June 1, 2011* -
## physics

the 2lb box slides on the smooth curved ramp. if the box has a velocity of 30ft/s at A, determine the velocity of the box and the normal force acting on the ramp when the box is located at B and C. assume the radius of curvature of the path is still 5 ft.

*asked by jenny on June 1, 2011* -
## algebra

A homeowner wishes to insulate her attic with fiberglass insulation to conserve energy. The insulation comes in 40-cm wide rolls that are cut to fit between the rafters in the attic.if the roof is 7 m from peak to eave and the attic space is 3 m high at

*asked by allen on May 4, 2007* -
## physics

A descent vehicle landing on the moon has a vertical velocity toward the surface of the moon of 34.1 m/s. At the same time, it has a horizontal velocity of 53.5 m/s. At what speed does the vehicle move along its descent path? Answer in units of m/s.

*asked by james on September 16, 2015* -
## Physics

A runner follows a straight line path. He reaches the 100m mark (xₒ = 100m) with a velocity of 2.29m/s, then slows down steadily (a = -0.700m/s^2) until he reaches a velocity of 0.500m/s. What is the displacement of the runner?

*asked by Anonymous on October 15, 2018* -
## Physics

A 10.3 kg block of ice slides without friction down a long track. The start of the track is 4.2 m higher than the end of the track, and the path traveled is 8.0 m. Find the speed of the block when it reaches the end of the track.

*asked by Breezerlea on February 22, 2011* -
## math

a bootlenose dolphin jumps out of the water. the path the dolphin travels can be modeled by h=-0.2d^2+2d, where h represents the height of the dolphin in feet and d represents the horizontal distance. What is the maximum height the dolphin can jump?

*asked by bob HELP NEEDED HELP NEEDED HELP NEEDED on May 1, 2011* -
## physics?

Your bumper car is travelling at 2 m/s. The total mass of you and your car is 350 kg. An empty motionless bumper car with a mass of 250 kg is in your path. How fast in m/s will your car move after you collide with it head on?

*asked by anonymous on September 7, 2017* -
## math

a bootlenose dolphin jumps out of the water. the path the dolphin travels can be modeled by h=-0.2d^2+2d, where h represents the height of the dolphin in feet and d represents the horizontal distance. What is the maximum height the dolphin can jump?

*asked by bob on May 1, 2011* -
## algebra 1

The rocket coaster has 15 cars, some that hold 4 people and some that hold 6 people. There is a room for 72 people altogether. How many 4 passenger cars are there? How many 6 passenger cars are there?

*asked by Anonymous on February 25, 2014* -
## Teacher aid

I have tried to find the answer to my question can someone help me? According to the SMCR model, problems in communications can arise when the speaker fails to do what? A)have a neat appearance B)have outside interests C)maintain eye contact with the

*asked by Maybell on April 4, 2016* -
## English

When I asked for a submarine, the convenience store clerk said he didn't have kits for making model ships with a confused look. misplaced modifier dangling modifier faulty predication incomplete comparison answer A

*asked by christopher on April 21, 2010* -
## exponential equations

If a brand new Nissan Frontier pickup truck has a current value of $22 500 off the lot, calculate how long, t, it will take to depreciate to half of it’s current value. This particular model has a depreciation rate of 23%. Give answer to 2 decimal

*asked by Anonymous on March 29, 2015* -
## College Algebra

The population of the Earth is approximately 6 billion people and is growing at an annual rate of 1.9%. Assuming a Malthusian growth model, find the world population in 45 years. (Round your answer to one decimal place.)

*asked by Lexi on November 10, 2010* -
## Calculus

Write a differential equation to model the situation given. Do not solve. Tests of an artifact discovered at the Debert site in Nova Scotia show that 28% of the original 14C is still present. What is the probable age of the artifact?

*asked by L.S. on December 14, 2011*

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