# Nathan

Popular questions and responses by Nathan-
## Maths

Dylan invested some money into his bank. He agreed on a simple interest rate of 3% per annum for a period of 2 years. At the end of the 2-year period, the value of his investment increased by£72 Work out the value of Dylan's initial investment.

*asked on February 2, 2017* -
## Geometry

The endpoints of AB are A(2, 3) and B(8, 1). The perpendicular bisector of AB is CD , and point C lies on AB. The length of CD is √10 units. The coordinates of point C are_____ . The slope of CD is _____ . The possible coordinates of point D are_____

*asked on February 26, 2016* -
## Calculus

Find all numbers c that satisfy the conclusion of Rolle's Theorem for the following function. If there are multiple values, separate them with commas; enter N if there are no such values. f(x)= x^2-10x+3, [0,10]

*asked on October 28, 2013* -
## Calculus

The top and bottom margins of a poster are 2 cm and the side margins are each 4 cm. If the area of printed material on the poster is fixed at 386 square centimeters, find the dimensions of the poster with the smallest area.

*asked on November 18, 2013* -
## physics

A 4.0 kg, 36-cm-diameter metal disk, initially at rest, can rotate on an axle along its axis. A steady 5.5 N tangential force is applied to the edge of the disk. What is the disk's angular velocity, in rpm, 4.0 s later?

*asked on November 30, 2016* -
## Physical Science

Two balloons are filled with an equal volume of air. One is put in the refrigerator for one hour, while the other is heated in a slightly warm oven. Identify which balloon is which, and explain why.

*asked on September 27, 2009* -
## English Lit

3 people who fear jane eyre 3 needs for jane eyre

*asked on December 10, 2007* -
## algebra and a little bit of geometry

What is the area of the composite figure whose vertices have the following coordinates? (−8, 3) , (−4, 4) , (−1, 1) , (−4, −2) , (−8, −2)

*asked on February 28, 2018* -
## Physics

You throw a 5.5 g coin straight down at 4.0 m/s from a 25-m-high bridge. A) How much work does gravity do as the coin falls to the water below? B)What is the speed of the coin just as it hits the water?

*asked on October 30, 2016* -
## Math (Propogation)

Consider an antenna transmitting a power of 5W at 900MHz. Calculate the received power at a distance of 2km if propagation is taking place in free space.

*asked on February 9, 2011* -
## Chemistry

How many moles of bromine are there in a 0.35 mL dichloromethane solution of 10% bromine? Density of Bromine = 3.10g/mL Density of dichloromethane = 1.33g/mL

*asked on January 24, 2013* -
## science

1.where is most freshwater found on earth? A.lakes and rivers B.oceans and seas C.Underground D.icecaps and glaciers

*asked on April 25, 2017* -
## Math

Find two numbers a and b whose sum a+b is -1 and whose difference a−b is 5. I do not understand the question

*asked on February 22, 2017* -
## statistics

In a particular hospital, newborn babies were delivered yesterday. Here are their weights (in ounces): 106 104 96 123 116 Assuming that these weights constitute an entire population, find the standard deviation of the population. Round your answer to at

*asked on April 19, 2010* -
## physical science

A mixture of hydrogen gas and oxygen gas are ignited and the following reaction occurs: Hydrogen + Oxygen = Water + Energy. Is this an Endothermic or Exothermic reaction and why?

*asked on August 27, 2008* -
## science

A mixture of hydrogen gas and oxygen gas are ignited and the following reaction occurs: Hydrogen + Oxygen = Water + Energy. Is this an Endothermic or Exothermic reaction and why?

*asked on August 28, 2008* -
## Science

Sometimes, when you sit by a lake in a forest, you can see perfect images of the hills and trees in the lake. Other times, when you are sitting beside the same lake, you cannot see any images in the water. Explain the difference between these two

*asked on June 5, 2018* -
## History

How did Napoleon’s conquests in Europe impact other parts of the world? A. Napoleon's conquest of Spain led to independence movements in the Americas. B. Napoleon’s consolidation of Europe led to the establishment of the League of Nations. C.

*asked on February 9, 2018* -
## Physics

A "swing" ride at a carnival consists of chairs that are swung in a circle by 12.0 m cables attached to a vertical rotating pole, as the drawing shows. (θ = 56.0°) Suppose the total mass of a chair and its occupant is 190 kg. (a) Determine the tension in

*asked on March 4, 2011* -
## physics

A u-shaped tube, open to the air on both ends,contains mercury. Wather is poured into the left arm until the water column is 10.0 cm deep. How far upward from its initial position does the mercury in the right arm rise?

*asked on November 24, 2010* -
## physics

A 20g plastic ball is moving to the left at 30 m/s. How much work must be done th cause the ball to move to the right at 30 m/s?

*asked on November 23, 2010* -
## pre-algebra

In a number square, the sum of the numbers in each row, column, and main diagonal is the same. Find the sum of the number square. a 7 2 1 5 b 8 c 4

*asked on September 28, 2009* -
## chemistry

What is the shape of H3C+ ?

*asked on October 4, 2008* -
## social studies

which land masses lie mostly within low latitudes

*asked on September 23, 2008* -
## History

Which best describes a similarity between how the Chinese Ming and Japanese Tokugawa governments viewed Jesuit missionaries? They both felt that Jesuit missionaries were undermining the native religion. They both saw Europeans as backwards and primitive,

*asked on March 3, 2020* -
## Calc 2

Use the shell method to find the volume of the solid generated by revolving the region bounded by the line y = x + 2 and the parabola y = x^2 about the following lines: a) The line x=2 b) The line x=-1 c) The x axis d) The line y=26 I know what the

*asked on October 3, 2016* -
## Math

The batteries from a certain manufacturer have a mean lifetime of 890 hours, with a standard deviation of 90 hours. Assuming that the lifetimes are normally distributed, complete the following statements.

*asked on June 8, 2014* -
## Calculus

The top of a 24 foot ladder, leaning against a vertical wall, is slipping down the wall at the rate of 4 feet per second. How fast is the bottom of the ladder sliding along the ground when the bottom of the ladder is 7 feet away from the base of the wall?

*asked on October 8, 2013* -
## Calculus

Find the slope of the tangent line to the curve (a lemniscate) 2(x^2+y^2)^2 = 25(x^2-y^2) at point (-3,-1).

*asked on October 8, 2013* -
## calculus

Two people start from the same point. One walks east at 3 mi/h and the other walks northeast at 2 mi/h. How fast is the distance between the people changing after 15 minutes?

*asked on December 5, 2011* -
## Physics

A 225-kg crate is pushed horizontally with a force of 710 N. If the coefficient of friction is 0.20, calculate the acceleration of the crate.

*asked on April 14, 2010* -
## Math

A retail store estimates that weekly sales s and weekly advertising costs x (both in dollars) are related by s=50000−430000e^(−00009x) The current weekly advertising costs are 2000 dollars and these costs are increasing at the rate of 300 dollars per

*asked on March 1, 2010* -
## chemistry

Select all true statements from the following: a. ) Metals are good conductors of heat and electricity. b. ) Nonmetals generally react by forming covalent bonds (i.e. sharing electrons) or by gaining electrons to form anions. c. ) Halogen atoms have the

*asked on October 4, 2008* -
## chemistry

Select all true statements from the following: a. ) Metals are good conductors of heat and electricity. b. ) Nonmetals generally react by forming covalent bonds (i.e. sharing electrons) or by gaining electrons to form anions. c. ) Halogen atoms have the

*asked on October 3, 2008* -
## Math

How many integers are NOT perfect powers between 1 and 1000? It might be easier to count how many are powers and subtract that number from 1000. To do this you should first find the highest power of 2 less than 1000, then you'll know how high of powers you

*asked on October 24, 2006* -
## US History

Which of these is an advantage of the North? (during the Civil War) Better transportation systems ** More experienced commanders Greater commitment to the cause Stronger support of the civilian population Feedback would be appreciated.

*asked on April 12, 2018* -
## Math

How do you isolate the variable in 3x=9?

*asked on February 7, 2018* -
## Math (fractions)

How many twelfths are equal to 1/2?

*asked on December 19, 2017* -
## Math homework

Kieth spends 1/6 of his savings on a magazine and 2/5 of the remainder on a storybook. What fraction of his savings is left?

*asked on November 12, 2015* -
## Physics - Equalibrium

Three Fixed pulleys with a common center have the following radi of Ra=16cm, Rb=24cm and Rc=36cm with the applied forces

*asked on June 24, 2015* -
## Physiscs 222

The inner and outer surfaces of a cell membrane carry a negative and positive charge respectively. Because of these charges, a potential difference of about 70*10-3 V exists across the membrane. The thickness of the membrane is 8.0*10-9 m. Assumption the

*asked on June 15, 2015* -
## Social Studies

1. Which is a key factor that affects the climate of mountainous Latin America? (2 points) • snow • El Niño • elevation • sea breezes 2. Which statement best describes the economies of Central America? (2 points) • Central America's economy is

*asked on April 22, 2015* -
## Health

Federal legislation placed new emphasis on solving America’s alcohol problems and created the NIAAA. What does NIAAA stand for? A. National Institute for America’s Alcohol Abuse B. National Institute for Alcoholism and Alcohol Abuse C. National

*asked on February 18, 2015* -
## Health

Federal legislation placed new emphasis on solving America’s alcohol problems and created the NIAAA. What does NIAAA stand for? A. National Institute for America’s Alcohol Abuse B. National Institute for Alcoholism and Alcohol Abuse C. National

*asked on February 18, 2015* -
## Chemistry

At a temperature of 23.0 degrees celcius, and a pressure of 2.25 bar what volume would 23.0 g of a compound in the gaseous state with a molecular mass of 207 g/mol occupy?

*asked on May 27, 2014* -
## Algrebra

with a tailwind, a bird flew at a ground speed of 3 mi/h. Flying the same path against the same wind, the bird travels at a ground speed of 1.5 mi/h. What is the bird's air speed? What is the wind speed?

*asked on January 21, 2014* -
## Calculus

Evaluate the limit. as x approaches infinity, lim sqrt(x^2+6x+3)-x

*asked on October 22, 2013* -
## Calculus

If f(x) = 2sin(5x)arcsin(x), find f'(x).

*asked on October 21, 2013* -
## Calculus

A baseball diamond is a square with sides of length 90 ft. A batter hits the ball and runs toward first base with a speed of 21 ft/s. At what rate is his distance from second base changing when he is halfway to first base? At what rate is his distance from

*asked on October 8, 2013* -
## math 4th grade

Not sure what to do here? Naomi has 50 red beads and white beads. The number of red beads is 1 more than 6 times the number of white beads. How many red beads does Naomi have?

*asked on September 19, 2013* -
## english

What is the topic sentence? Nearly everyone is familiar with the dark silhouette of the giant saguaro, its arms thrust stiffly out. However, few people have actually seen this awe-inspiring plant in its natural habitat, since it is found only in the desert

*asked on June 1, 2011* -
## Statistics

The weights of adult males are normally distributed with a mean of 172 lb and a standard deviation of 29 lb Q.Find the weight that divides the upper 2% of weights from the lower 98%

*asked on March 10, 2011* -
## Math

Draw a rectangle with an area of 48 cm squared that has a decimal factor for either the length, the width, or both.

*asked on January 6, 2011* -
## 5th grade

A quadrilateral has angle measures of 71 degrees, 28 degrees, and 115 degrees. Which is the measure of the last angle?

*asked on November 28, 2010* -
## Pre Calculus

Prove that 2/square root 3cosx-sinx=sec(pi/6-x)

*asked on April 22, 2010* -
## 2nd grade Math

The following is a table Range in lb Number Under 50-54 4 55-59 7 60-64 6 65 and higher 2 1. Write a simple comparison problem about the weights in the above table. 2. Weite an addition proble about weights. 3. Write an addition problem about the table as

*asked on February 1, 2010* -
## Science

Chromium is produced by reacting its oxide with aluminum. If 76 g of Cr2O3 and 27 g of Al completely react to form 51 g of Al2O3, how many grams of Cr are formed?

*asked on November 18, 2009* -
## Math

Exam scores were normal in MIS 200. Jason's exam score was 1.41 standard deviations above the mean. what percentile is he in?

*asked on March 25, 2009* -
## rugby

hi I need to find out how rugby is funded and how it can be improved. evaluate rugby and suggest ways to improve. thanks

*asked on January 19, 2009* -
## economics

Unemployment rate is unacceptably high. Is this positive economics, normative economics, or art of economics and why

*asked on April 28, 2008* -
## Math

2-4 paragraphs plus two graphs Details: Many different kinds of data can be modeled using polynomial functions. An example of a polynomial function would be gas mileage for an automobile. If we compare gas mileage at two different speeds, V1 and V2, the

*asked on January 21, 2008* -
## math

Mrs. Bishop ran her last marathon (26.2 miles) in 4 hours 48 minutes while Dr. Farrar ran a half-marathon (13.1 miles) in 2 ½ hours. Who had the faster running speed? How do you know?

*asked on April 6, 2020* -
## math

Given the function f(x) = ax^3 + bx^2 + 3x - 2, and f(2) = 10 and f ' (-1) = 14, solve for A and B.

*asked on February 23, 2020* -
## math

A random sample of dogs at different animal shelters in a city shows that 7 of the 40 dogs are puppies. The city's animal shelters collectively house 840 dogs each year. About how many dogs in all of the city's animal shelters are puppies?

*asked on January 16, 2020* -
## Math

What annual rate of interest will enable $800 to grow to $1000 in three years? cant seem to derive the formula for this one, normal compound interest isnt working for me

*asked on December 18, 2019* -
## Physics

A toy car runs off the edge of a table that is 1.385 m high. The car lands 0.378 m from the base of the table. How long does it take for the car to fall? Answer in units of s. What is the horizontal velocity of the car? Answer in units of m/s.

*asked on October 7, 2019* -
## Chemisty

Why does the bottom of the inner blue cone of a bunsen burner have such a low temperature compared to the rest of the flames? Is this due to the outside flames being in contact with oxygen, while the inner flame receives a low amount of oxygen?

*asked on September 4, 2019* -
## English

Hello, I just wanted to have some extra eyes look over my essay for the vice-presidential nomination for USMA. The character limit is 3500. I welcome both constructive criticism and grammatical fixes/suggestions. Thank you! WHY DO YOU WANT TO ATTEND ONE OF

*asked on July 11, 2019* -
## Math

For the first 15 questions on a test, 14 questions were answered correctly but only 60% of the remaining questions was correctly answered. 4/5 of the whole test was correct. If each question was awarded of equal value, how many questions was there

*asked on May 15, 2019* -
## Math

For the first 15 questions on a test, 14 questions were answered correctly but only 60% of the remaining questions was correctly answered, 4/5 of the whole test was correct. If each question was awarded of equal value, how many questions was there

*asked on May 10, 2019* -
## science practice

the strength of the force of gravity depends on: wut

*asked on April 11, 2019* -
## social studies

Why can families like Yasmin easily move from place to place in Europe

*asked on April 10, 2019* -
## science

an advantage of using an electromagnet shown on the crane the image below instead of a regular magnet to move cars in a junk yard is that an electromagnet can easily be turned on and of

*asked on April 10, 2019* -
## science

Describe magnetic fields in your own words pleas help me i need it to pass 6 th grade

*asked on March 20, 2019* -
## health

primary function of the smaller intestines

*asked on March 14, 2019* -
## math

869872579875 carz mineus 32 % idk the answer pleas help me

*asked on March 14, 2019* -
## Chemistry

The molar heat of vaporization of water is 42 kJ/mol. How much energy is released by the condensation of 3.0 g of water?

*asked on January 3, 2019* -
## Physics

This has been bugging me, I am given the steps to the answer, yet when I try to redo it I cannot reach the same answer. It is probably some silly mistake that I don't seem to notice, can someone please point my error, Thank you! Context : Physics The

*asked on December 11, 2018* -
## mathematics

solve the equation, (-5x - 25 = 14 - 8x)

*asked on December 4, 2018* -
## Physics

A truck travels up a hill. With a 6.5 incline the truck has a constant speed of 17 m/s what is the horizontal component of the trucks velocity

*asked on October 4, 2018* -
## math

If you walk 5/ 8 mile and then jog 4/ 7 mile, what is the total distance covered? How much farther did you walk than jog? The total distance covered is nothing miles. (Simplify your answer. Type an integer, simplified fraction, or

*asked on September 7, 2018* -
## social studies

what is 22 s and 43 w

*asked on August 15, 2018* -
## Math

Find all those numbers x on the number line that are twice as far from 2 as they are from 10.

*asked on July 21, 2018* -
## English

How would facing our fears help us uncover our inner strength?

*asked on June 18, 2018* -
## Math

Find two consecutive odd integers such that the square of the first, added to 3 times the second, is 24.

*asked on June 11, 2018* -
## Math

13 more than the product of m and 5

*asked on January 29, 2018* -
## Riddle

Think outside the box but the box is the wrong shape. Let's get this cylinder poppin with some music. I have said her exact name 16 times indirectly. Tell me a girl's name that can come from that.

*asked on January 23, 2018* -
## Pre calc

Use the Pythagorean identities rather than reference triangles. Find tanθ and cotθ if secθ = 3/2 and sinθ

*asked on January 19, 2018* -
## math

allison bought some shirts for her clothing store for $15 each. she recived $50 off her entire purchase and spent a total of 400 how many shirts did allison purchase for her store?

*asked on June 14, 2017* -
## math

massimo has $90 in the bank. Every time he rides the buss he spends $2.50. write and solve an equation that massimo can use to see how many times he can ride the bus.

*asked on June 14, 2017* -
## Math

at 3pm one day , the shadow of a tree was 5m long. At the same time a 2m long corn stalk had a shadow which was 3m long. how high is the baobab?

*asked on May 19, 2017* -
## math

1.estimate the sircumference of a circle with the given radius or diamiter. use 3.14 for pie. the raius is 24 and the answers are:A27 B79 C1809 D151

*asked on March 31, 2017* -
## math

If ab = 8 and a^2+b^2=16, then what is the value of (a+b)^2?

*asked on March 11, 2017* -
## Math

What are two mixed numbers so that the sum is 7 2/4 and the difference is 5

*asked on December 22, 2016* -
## math

A soccer match was attended by 450 spectators. One third of them were men, two fifth of them were women and one tenth of them were boys. How many girls attended the soccer match?

*asked on October 19, 2016* -
## science

what is the bends (the diving illness)

*asked on October 12, 2016* -
## Statistics

Consider the following frequency distribution of daily sales for a shop that was kept for the months of November and December in 2013. Daily Sales ($) 60-70 70-80 80-90 90-100 100-110 110-120 Number of days 5 11 22 13 7 3 a. From this frequency

*asked on October 1, 2016* -
## Lucayan International

what is the simple subject and simple predicate in this question. This alloy contains a mixture of iron and carbon

*asked on September 20, 2016* -
## math solve the problem using the four step plan

At the end of their 3-day vacation, the Palmers traveled a total of 530 miles. On the third day,they drove 75 miles. On the second day,they drove 330 miles. How many miles did they drive the first day? I can only solve this by adding the second, and third

*asked on September 20, 2016* -
## Math

I have a bag with 2 different kinds of objects: 11 cubes, 16 spheres. If I randomly pick from the bag 5 of these objects without return any of it, what is the probability of getting at least 1 of each kind?

*asked on September 10, 2016*