
algebra 2
Traveling with the wind, an airplane travels 210 miles im 4 hours. Against the wind, it takes six hours. Find the rate of the plane in still air and the velocity of the wind.
asked by clarissa on October 31, 2016 
Chemistry
In the cchemistry lab we conducted an experiment called atomic spectroscopy. We had to find the color, energy, wavelength, and 1/lamda for Hydrogen, neon, and mercury. For hydrogen: red 1.90ev 650nm 1.54e^3 red 2.02ev 610nm 1.64e^3 green 2.30ev 545nm
asked by Hannah on October 31, 2011 
algebra
Can someone please tell me if I did this problem right? A new truck that sells for $29,000 depreciates 12% each year. Write a function that models the value of the truck. Find the value of the truck after 7 years. my answer=p(x)=price of truck ($)
asked by Fidelia on March 29, 2007 
social studies
what are the five great lakes You can find that at the site below: http://worldatlas.com/webimage/countrys/namerica/greatlk.htm they are lake superior lake michagan lake huron lake eria lake ontario
asked by A Friend on October 3, 2006 
Statistics
1. For the following research question, specify the parameter and give the null and alternative hypotheses. "Is there a difference in the proportions of male and female college students who smoke cigarettes? 2. For the following research question, specify
asked by A on April 6, 2014 
Chemistry
so i got a test and like usual my teacher didn't teach me half of the stuff that's going to be on it so he gave us a pretest of what is going to be on it and an answer key and i got several questions 13.) what is the pH of a formic acid if the
asked by Chemistry on April 7, 2009 
computer programming c++
c++ program questoin A particular talent competition has 5 judges, each of whom awards a score between 0 and 10 to each performer. Fractional scores, such as 8.3, are allowed. A performer’s final score is determined by dropping the highest and lowest
asked by james on April 21, 2010 
law
Review and revise the following paragraph. After reviewing al the pleadings the underlining records that party arguments; pertinent caselaw and statues and the other recommendations filed byt eh party's, this court remainsof the opinion and biew point that
asked by andy on January 15, 2012 
law research
Review and revise the following paragraph. After reviewing al the pleadings the underlining records that party arguments; pertinent caselaw and statues and the other recommendations filed byt eh party's, this court remainsof the opinion and biew point that
asked by Andy on January 14, 2012 
law
Review and revise the following paragraph. After reviewing al the pleadings the underlining records that party arguments; pertinent caselaw and statues and the other recommendations filed byt eh party's, this court remainsof the opinion and biew point that
asked by Andy on January 14, 2012 
Related ratescalculus
You are eating soup from a hemispherical bowl of radius 6cm at a constant rate of 40ml/min. Find the rate at which the soup level is going down in depth of the soup is 2cm.
asked by A on November 13, 2011 
Calculus
A particle is moving along the curve y = 2 √{3 x + 7}. As the particle passes through the point (3, 8), its xcoordinate increases at a rate of 5 units per second. Find the rate of change of the distance from the particle to the origin at this instant.
asked by Jack on October 18, 2010 
Reading
On my reading worsheet we are supposed to find antonyms of words and one word was analyze and the options to match antonyms were not going in to any word Like on google it gives me synthesize or combine but neither word is on my worksheet please help
asked by Steve on November 17, 2014 
Geography
You need to open a new clothing factory to keep up with the demand for your clothing in the United States. You have looked into building the factory in Trinidad and Tobago. Would your factory likely be able to find enough workers? Explain your answer.
asked by Naomi on May 4, 2011 
math
Find the tax on a dinette with a cash price of $200 that has been reduced by 20% if the tax rate is 6.5% The taxable value of the property in the tax area is usually referred to as the ? value. 1. taxable 2. assessed Please help me with these. after these
asked by Ralph on January 12, 2010 
calculus
A particle is moving along the curve y=4((3x+1)^.5). As the particle passes through the point (5,16) its coordinate increases at a rate of 2 units per second. Find the rate of change of the distance from the particle to the origin at this instant.
asked by sja on October 26, 2010 
Calculus
A particle is moving along the curve . As the particle passes through the point , its coordinate increases at a rate of units per second. Find the rate of change of the distance from the particle to the origin at this instant.
asked by Anonymous on November 4, 2012 
Math
The temperature at noon in Los Angeles on a summer day was 88°F. During the day the temperature varied from this by this much as 7.5°F. Write and solve an absolute value inequality to find the range of possible temperatures for that day?
asked by Madison on January 28, 2017 
Calculus
A particle is moving along the curve . As the particle passes through the point , its coordinate increases at a rate of units per second. Find the rate of change of the distance from the particle to the origin at this instant.
asked by Anonymous on November 4, 2012 
chemisty
find the oxidation state of a carbon in methane, carbon monoxide, carbon dioxide, CH2O, acetic acid, carbonic acid, methanol, and benzene (C6H6)
asked by Allison on March 10, 2015 
7th grade social Studies questions Ms. Sue please
Hi Ms. Sue, can you please give me links to find the answers to these questions? I have looked everywhere!!!! Thanks!!! What other Things did the Telegraph lead to? What was Life Like Before The Telegraph? What Was Life Like After The Telegraph? What are
asked by Delilah on November 5, 2012 
physics
An 800 N man stands on a scale in a motionless elevator. When the elevator begins to move, the scale reads 650 N. Find the magnitude and direction of the elevator's acceleration.
asked by Sam on December 19, 2010 
algebra
A boat traveling on the Snake River travels 24 miles upstream in 3 hours. The return trip takes the boat only 2 hours. Find the rate of the boat in still water.
asked by Anonymous on November 9, 2010 
Physics
A heating instrument has 12 resistors and they are placed vertically and they have uniform reducing power.The power of the first, second,third and fourth resistors are 300ohms,260ohms,220ohms and 180ohms respectively.Find the power of the resistor?
asked by Robotic on July 31, 2019 
physics
In her physics lab, Jessica rolls a 11g marble down a ramp and off the table with a horizontal velocity of 1.38 m/s. The marble falls in a cup placed 0.45 m from the table's edge. Find the table's height.
asked by ronnie on February 6, 2013 
Physics
Two point charges of 8.7×10−6 C, on the left, and −2.7×10−6 C, directly to its right, are separated by 0.071 m. Find the electrostatic force acting on the charge on the left. A force to the right is taken as positive, while one directed to the left
asked by Anonymous on February 3, 2014 
Math
A plane that can fly 275 mph in still air for 3 hours against a wind and for 2 hours with the same wind. The total distance it covers is 1300 miles. Find the rate of the wind.
asked by Adam on December 2, 2007 
Quantitative methods
State Bank made a loan at 12% interest for 360 days. If the amount of interest was $934.20, use the ordinary interest method to find the amount of principal borrowed.
asked by Richard Zimmerman on June 15, 2017 
math
A, B, C are three points on a horizontal plane, where A is due south of B. The bearing of C from A is 060 degrees. At B, there is a vertical mast BD. The angles of elevation of its top D from A and C are 25 degrees and 20 degrees respectively. Find the
asked by somay on January 28, 2016 
physics
A crate is sliding down a ramp that is inclined at an angle of 55.4° above the horizontal. The coefficient of kinetic friction between the crate and the ramp surface is 0.501. Find the acceleration of the moving crate.
asked by Russ on November 29, 2012 
Calc
A plane flying horizontally at an altitude of 2 mi and a speed of 420 mi/h passes directly over a radar station. Find the rate at which the distance from the plane to the station is increasing when it is 5 mi away from the station.
asked by Callie on October 13, 2015 
College algebra
Given the following quadratic equation find. a) the vertex b) the axis of symmetry c) the intercepts d) the domain e) the range f) the interval where the function is increasing g) the interval where the function is decreasing h) graph the function y=
asked by Anonymous on March 15, 2013 
Math
John's car is 13 feet long. He is making a model that is 1/12 of the actual size. Which proportion below should be used to find the length, L, of the model? A(wrong) 13/L = 1/12 B(correct) L/13 = 1/12 C(wrong) L/13 = 1/L D(wrong) 12/L = 13/1 I don't get
asked by Sarah on February 28, 2010 
Chemistry
Al_S=Al2S3 10 grams of Al were mixed with 15 gram of S Find: limiting reagent al or s? How much Al2S3 were formed in reaction? What is the excess reagent?Al or S? How much excuss reagent left over after reactin? Thanks!
asked by mal on November 20, 2012 
Calculus with Analytical Geometry 1
Jack Brown received two offers for his property: 1. 130000 in 5 months. 2. $13500 every months for the next 10 months. Find the present value of the two offers if theory is worth 12% compounded monthly.
asked by Keon on March 7, 2016 
math
Jane decides to build a wooden pencil box. She allows 32cm along the diagonal. The width of the box is to be 8cm. find the angle that the diagonal makes with the length of the box.
asked by johnny on April 16, 2013 
calculus
a plane flying horizontally at an altitude of 2 mi and a speed of 460 mi/h passes directly over a radar station. find the rate at which the distance from the plane to the station is increasing when it is 5 mi away from the station.
asked by L.J on November 17, 2011 
math
Kari buys 3 goldfish at $4 each she sees bowls marked"3 for $10" and buys 6 of them.she also buys 2 jars of fish food marked 2 for $3.00". which expression could you use to find her total coast?how would the problem
asked by james willson on January 11, 2011 
Honors Physics
A mass, m1 = 5.00 kg, resting on a frictionless horizontal table is connected to a cable that passes over a pulley and then is fastened to a hanging mass, m2 = 9.0 kg. Find the acceleration of each mass and the tension in the cable. PLEASE HELP!
asked by Chubba on September 21, 2010 
College Algrbra
Given the following quadratic equation, find a. the vertex b. the axis of symmetry. the intercepts d. the domain e. the range f. the interval where the function is increasing, and g. the interval where the function is decreasing h. Graph the function
asked by Sherri on December 17, 2012 
gometry
in a circle of radius 17cm, two parallel chords are drawn on opposite sides of a diameter. the distance between the chords is 23cm. if the length of one chords is 16cm, find the length of the other.
asked by Anonymous on June 17, 2014 
college algebra
Given the following quadratic equation, find;? a. the vertex b. the axis of symmetry c. the intercepts d. the domain e. the range f. the interval where the function is increasing, and g. the interval where the function is decreasing h. Graph the function.
asked by zachary on March 4, 2013 
math
Please help me to find the range of each set of numbers.7, 7, 5, 4, 1, 9, 8, 8, 8, 5, 2 The range of a set of data is the difference between the highest and lowest values in the set. This is true whether there is one or more scores at either extreme value.
asked by carmen on April 16, 2007 
statistics
Two cards are drawn from a wellshuffled ordinary pack of 52 cards. The first card is replaced before selecting the second card. Find the following probabilities. (iii) One is King and one is queen (iv) Both are faced cards
asked by usman on October 21, 2015 
chemistry help
ok so i need to find how many atoms make up the earth. the average atomic mass of the atoms is 14g/mol. avogadro's number gives the number of atoms in a mole. so what atom do i take?? carbon or something??
asked by RAYMOND on September 17, 2009 
statistics
Suppose that in a large population the proportion of people that have a certain disease is 0.01. Use the Poisson approximation to find the probability that at least four people will have the disease in a group of 400 randomly selected people.
asked by andrea on November 2, 2014 
distance problem
A car travels 20 km/h faster than a truck. The car covers 360 km in 3 hours less time than the truck.Find the speed of the truck. (kindly write the solution, thanks alot)
asked by HELP HELP MNHS on December 17, 2012 
Trigonometric
A woman standing on a hill sees a flagpole that she knows is 55 ft tall. The angle of depression to the bottom of the pole is 14°, and the angle of elevation to the top of the pole is 18°. Find her distance x from the pole.
asked by Chris on February 7, 2016 
Please help! quadratic equation
Given the following quadratic equation find. a) the vertex b) the axis of symmetry c) the intercepts d) the domain e) the range f) the interval where the function is increasing g) the interval where the function is decreasing h) graph the function y=
asked by Jenn on March 16, 2013 
Algebra
This diagram shows a solid metal cylinder. The cylinder hasbase radius 2x and height 9x. The cylinder is melted down and made into a sphere of radius r Find an expression for in terms of x
asked by Alex on April 23, 2018 
Math
2trains of the same length were running in opposite direction at 54km/hr and 72km/hr respectively.find the length of each train if the faste train passed a man in the slower train in 18seconds.
asked by Simran kaur on September 8, 2012 
Chemistry
Use Ksp to find the concentration of an ion in a saturated solution. Consider a 2.50E3 M solution of Al2(SO4)3. (a) What [OH^] is required to initiate precipitation of Al^3+ from the solution? (b) What [OH^] is required to lower the [Al^3+] to 2.00E7 M
asked by Jo on July 28, 2012 
Physics
A single force acts on a 1.1 kg particlelike object in such a way that the position of the object as a function of time is given by x = 4.1t  3.6t2 + 4.5t3, with x in meters and t in seconds. Find the work done on the object by the force from t = 0 to t
asked by Robin on March 8, 2014 
Bcc
suppose x has a moundshaped distribution. A random sample size 16 has a sample mean of 10 and a sample standard deviation of 2. Find 99% cinfidence interval for mue (mean) using a student's t distribution.
asked by Yira f on December 4, 2014 
Math
A rectangular room is 4 meters wider than its high and it is 8 meters longer than its wide. the total Ares of the wall is 512 square meters. Find the dimensions of the room.
asked by jochabed on August 21, 2016 
math
lamar made a garden in the shape of a rectangle with an area of 36 square feet. The shorter side of the garden measures 4 feet. Explain how you can find the perimeter of the garden
asked by Mimi on April 28, 2016 
Math
A rectangular room is 4 meters wider than its high and it is 8 meters longer than its wide. the total Ares of the wall is 512 square meters. Find the dimensions of the room.
asked by jochabed on August 27, 2016 
math
A particular model of walkietalkie can broadcast in a circular area. The radius of the broadcast area is 10,000 feet. Find the area of this circle to the nearest square foot. Use 3.14 for pi.
asked by Tay on March 13, 2017 
algebra
A motorboat that travels with a speed of 20 km/hour in still water has traveled 20 km against the current and 180 km with the current, having spent 8 hours on the entire trip. Find the speed of the current of the river.
asked by Anonymous on March 30, 2018 
geometry
I was assiged a 51 question assigment today and its due tomorrow.I'm having a hard time with the following question: "If angle BFA=3r+12 and angle DFE=8r+210,find angle AFE". PLEASE HELP!!!!
asked by Rick on August 27, 2012 
Chemistry
Calculate the moles of oxygen gas needed t burn 1.22 moles of ammonia, NH3(g). Find the moles of nitrogen dioxide gas and gaseous water produced.
asked by franci on March 20, 2011 
algebra
Given the following function, find: (a) vertex (b) axis of symmetry (c) intercepts, (d) domain (e) range (f) intervals where the function is increasing, (g) intervals where the function is decreasing Please show all of your work f(x)=7x^214x3
asked by sarah on January 18, 2012 
Ratios
This is an easy question but I can't find my notes on the subject. A cookie dough is divided into 3, in a ratio of 1:2:3 by weight. If the heaviest dough is 8oz more than the lightest one, what was the weight of the dough before dividing?
asked by Nikki on May 10, 2017 
Math
x^2+xk find all positive values for k, if it can be factored Allowed values of k for for the expression to be factorable with integers are a*(a+1) where a is an integer equal to 1 or more. For example: 2, 6, 12, 20... The factors are (xa)(x+a+1) There
asked by Sean on July 12, 2007 
Math
Your goal is to take at least 10000 steps per day. According to your pedometer, you have walked 5274 steps. Write and solve the inequality to find the possible numbers of steps you can to reach your goal. Can someone explain how to do this?
asked by EmberShy on February 9, 2017 
Calculus
The position function of a particle in rectilinear motion is given by s(t) s(t) = t^3  9t^2 + 24t + 1 for t ≥ 0. Find the position and acceleration of the particle at the instant the when the particle reverses direction. Include units in your answer.
asked by Tom on May 18, 2015 
physics
A 35 turn coil of radius 4.9 cm rotates in a uniform magnetic field having a magnitude of 0.53 T. If the coil carries a current of 20 mA, find the magnitude of the maximum torque exerted on the coil.
asked by chuck on October 22, 2010 
Calculus
A particle is moving along the curve . As the particle passes through the point , its coordinate increases at a rate of units per second. Find the rate of change of the distance from the particle to the origin at this instant.
asked by Anonymous on November 4, 2012 
Geometry
Help! I don't understand this problem Find the angle of rotation that maps point P (1,0) on to P'. What are the x and y coordinates of point P' to the nearest thousandths? Determine a translation rule that maps point P onto P'.
asked by Kelly on August 22, 2015 
Math
Given the total profit function P(x) = 1.3x.01x^230, let x represent a number of days and find maximum profit achieved and when that profit is made. Then graph the function and mark the vertex
asked by Anonymous on April 15, 2014 
critical thinking
Often the press can report political spin without analyzing it to do which of the following? Answer separate lies from denials find the new and unusual separate fact from fiction (( not sure but i think its this one)) separate leaks from fact
asked by Anonymous on November 9, 2011 
math
A rectangular block is constructed so that its length is 3 times the width. Find the dimension of the rectangular block that will give the least possible surface area if the volume of the block is 81 cubic meters.
asked by Ellison on September 5, 2018 
geometry
Find the surface area of a rectangular prism with a length of 8 inches, a width of 5 inches and a height of 2 inches. so far this is what I have (2(8)+2(5))2=72 + 2(8.5)=80 my answer is 152in^2 the books answer is 132in^2 What did I do wrong???? Thanks
asked by mary on April 18, 2011 
college algebra
Given the following quadratic equation, find a. the vertex b. the axis of symmetry c. the intercepts d. the domain e. the range f. the interval where the function is increasing, and g. the interval where the function is decreasing h. Graph the function.
asked by LISSETT on December 16, 2012 
Science
An air balloon is at rest in the air and a stone is dropped from it. It passes a 81m tower in quarter of a second and comes on the ground. Find the final velocity and the height of the air balloon.
asked by Sahil Khan on August 22, 2014 
Physics
Two ropes are attached to a wagon, one horizontal to the west with a tension force of 40 N and the other east at an angle of 23° northward and a tension force of 50 N. Find the components of the net force on the cart
asked by Ben on May 18, 2015 
Calculus
A plane flying horizontally at an altitude of 2 mi and a speed of 420 mi/h passes directly over a radar station. Find the rate at which the distance from the plane to the station is increasing when it is 5 mi away from the station.
asked by Callie on October 13, 2015 
PHY101
A 1200kg travelling east collides with another 1000kg car travelling north. If they are both travelling at 90km/h and the collision is completely inelastic, find the velocity of the systemafter collision.
asked by Ebieride on May 17, 2016 
math check
Complete the following hypothesis test: Ho: ì = 52, Ha: ì < 52, á = 0.01 using the data below. 43 48 44 48 42 60 54 44 50 35 48 58 ii) Find the pvalue. (Give your answer correct to four decimal places.) Incorrect: Your answer is incorrect. . 0.0928 was
asked by tom9 on June 21, 2013 
algerbra
Katy has a rectangle field that is 700 feet wide one portion of the field is 2x long the other portion is 14y. Use the distributive property to find an expression for the area of the field.
asked by pat on December 9, 2012 
physics
A 21.6kg box rests on a table. A 19.3kg box is placed on top of the first box, as shown. Determine the total force in N that the boxes exert on the table. FIND f=ma for both and add them up? a=9.8 gravity rite?
asked by Lisa on October 1, 2009 
Calculus
A particle is moving along the curve y = 2 √{3 x + 7}. As the particle passes through the point (3, 8), its xcoordinate increases at a rate of 4 units per second. Find the rate of change of the distance from the particle to the origin at this instant.
asked by Carl on October 26, 2010 
math
the smith family plans to sit down to thanksgiving diiner at 6:00 P.M. they have an 18 pound turkey.the turkey needs to cook about 20 minutes per pound. at what time should the turkey go in the oven? 2:40? how do you find the answer?
asked by Celest on June 5, 2012 
Math
A group of students are traveling to Six Flags. One bus has 15 fewer than 2.5 times as many students as the other bus. Write an equation to find the total number of students. So, I was wondering if x = (n x 2.5)  15, is correct?
asked by anonymous on April 21, 2009 
statistics
A distribution of values follows a N(140,22) distribution. From this distribution you are drawing samples of size 12. Find the interval containing the middlemost 34% of the sample means. Round your values to 1 decimal place.
asked by Kim on October 27, 2011 
maths
a mathematics question contained 20 items. every wrong answer scores 2marks, every correct answer scores 4marks and no mark for no answer. find the maximum possible score
asked by Elijah on November 18, 2015 
Algebra
1. Find the slope of the graph of the linear function f with f(0)=4 and f(3)=13. I have no idea how to do this.. :( __________________________________ Evaluate the function when x=3, x=0, and x= 2. 2. f(x)=1/2x+3 my answers: 1.5, 3, 1 3. h(x)=5.5x+4 my
asked by Kuku Monkey on October 5, 2009 
math
you borrow $200 fro a friend to help pay for a new laptop computer. You pay your friend back $12 per week. Write and solve an inequality to find when you will owe your friend less than $60.00
asked by robin on October 24, 2018 
Math
(2,14),(1,1),(3,35) Find the quadratic function y=ax^2+bx+c 1) 4a+2b+c=14 2) a+b+c=1 3) 9a+3b+c= 35 equation 1&2 = 3a + b = 13 equation 1&3 = 5a +5b = 21 i know you take those two equations now 3a + b = 13 5a  5b = 21 multiply the top by 5 and the
asked by Sarah on May 12, 2009 
science
How do I find oxidation numbers of certain elements in compounds? I'm really confused so very simple terms would be appreciated. EX: What is the oxidation number of sodium in NaOH AND What is the oxidation number of Iron in FeCl3??
asked by Viola on March 11, 2012 
statistics
how do I find the correlation coefficient r? Jesse put the heartbeat and lifespan data into a statistical software program and found the coefficient of determination is 0.45. The value of the correlation coefficient is __________.
asked by Casey on October 25, 2014 
Physical Science
A 12 kilogram tire is to be pulled by three ropes. One force, F1, has a magnitude of 50N. Orient the other two forces so that the magnitude of the resulting acceleration of the tire is least. And find that magnitude if: F2=30N, F3= 20N.
asked by Akila on September 18, 2014 
Calculus  Taylor #2
Find the Taylor series for f(x) centered at the given value of 'a'. (Assume that 'f' has a power series expansion. Do not show that Rn(x)>0.) f(x) = x3, a = 1 and what i've done so far: f (x) = x^3 f ' (x) = 3x^2 f '' (x) = 6x^1 f ''' (x) = 6x f (1) =
asked by COFFEE on July 28, 2007 
Perimeter
Lamar made a garden in the shape of a rectangle with an area of 36 square feet. The shorter side of the garden measures 4 feet. Explain how you can find the perimeter of the garden.
asked by Maria on March 19, 2015 
Math
The volume of a triangular prism is 12cubic cm .atriangular face has base b and height h. The length of the prism is l. Find possible values for b, h and l. Sketch one possible prism that has an isosceles triangle as its base.
asked by Jalal on November 7, 2015 
Physics
Three positive point charges are located at the corners of a rectangle. Find the electric field at the fourth corner if q1 = 5 nC, q2 = 6 nC, and q3 = 7 nC. The distances are d1 = 0.6 m and d2 = 0.2 m. (Let the positive xdirection be to the right, and the
asked by Eric on January 18, 2016 
algerba 1
From the top of a lighthouse 210 feet high, the angle of depression to a boat is 27. Find the distance from the boat to the food of the lighthouse. The lighthouse was built at sea level. Help me!
asked by Maram on April 18, 2011 
Calculus
Ice is forming in a pond at a rate given by dy/dx=ksqrt(t), where y is the thickness of the ice in cm at time t measured in hours since the ice started forming, and k is a positive constant. Find y as a function of t.
asked by math whizz on December 5, 2011 
math
A car company is offering car loans at simple interest rate of 14%. Find the interest charged to a customer who finances a car loan of $34000 for 2 years
asked by bobby on July 22, 2011 
math
a person was climbing on a building. He slips 1 m for every 5 metre he climbs up. If the building is 53 m high and he takes 5 seconds to climb 1 metre find the total time taken by him to get on the top of the building.
asked by Anonymous on April 25, 2014
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