
algebra
A rectangular piece of cardboard measures 17cm by 14cm. Strips of equal width are cut off one side and one end. The area of the remaining piece is 108cm^2. Find the width of the strips removed.
asked by Samuel on October 28, 2011 
Probability
A 30 year old can buy $25,000 life insurance for $15/month. If the probability that the 30 year old will die is 0.14% find the insurance companies expected profit for the policy. (I want this in terms of their annual expectationnot monthly expectation)
asked by Anonymous on July 10, 2011 
Math
Two cars start at the same time but travel in opposite directions. One car avaerage speed was 20mph at the end of 2 hours the two cars are 200 miles apart. Find the avatars speed in mph of the other car.
asked by Haley on September 22, 2017 
math
Note: Enter your answer and show all the steps that you use to solve this problem in the space provided. The angles opposite the congruent sides of an isosceles triangle are congruent. Find the value of x in the triangle. Show all your work.
asked by f on February 22, 2019 
Fianace
A 10year bond has a coupon rate of 7% anually and a principal payment of $1,000.00. Other similar bonds are paying 9% annually. To determine the value of this bond you must find the interest factors, IF. at: A. 9% for 10 periods B. 9% for 20 periods C.
asked by Michelle on October 30, 2013 
Physics
A 14 g bullet is fired into the bob of a ballistic pendulum of mass 1.6 kg. When the bob is at its maximum height, the strings make an angle of 60° with the vertical. The length of the pendulum is 2.3 m. Find the speed of the bullet. ?m/s Any help is
asked by Raj on July 21, 2015 
physics
In each situation shown in the figure below, a ball moves from point A to point B. Use the following data to find the change in the gravitational potential energy in each case. You can assume that the radius of the ball is negligible. (a) h = 1.45 m, θ =
asked by joy on March 8, 2018 
Geometry
To determine the relationship between miles and kilometers, if we use the conversion 39.37 inches= 1 meter, we find that 1 kilometer is approximately equal to 0.62 mile. What if we use the conversion 2.54 centimeters = 1 inch? How far apart are the answers
asked by John on December 3, 2013 
Math
An equation is given. (Enter your answers as a commaseparated list. Let k be any integer. Round terms to three decimal places where appropriate. If there is no solution, enter NO SOLUTION.) Find the solutions in the interval: √3tan(3θ)1 Interval
asked by Janet on April 27, 2019 
physics
After 35 minutes of running, at the 8{\rm km} point in a 9{\rm km} race, you find yourself 200m behind the leader and moving at the same speed. What should your acceleration be if you are to catch up by the finish line? Assume that the leader maintains a
asked by Anonymous on March 20, 2013 
physics
A 2.1 103kg car starts from rest at the top of a 5.9mlong driveway that is inclined at 19° with the horizontal. If an average friction force of 4.0 103 N impedes the motion, find the speed of the car at the bottom of the driveway.
asked by heather on October 12, 2012 
chemistry
A 12.42 gram sample of a mixture of NaCl and CaCl2 is dissolved in water and all the chloride is precipitated as AgCl. If the AgCl precipitate has a mass of 31.70 grams. How do I find the mass percentage of each component in the original mixture?
asked by Anonymous on January 20, 2015 
physics
a framed picture of weight 15N is hung on a wall, using a piece of string. The ends of the string are tied to two points, 0.60 m apart on the same horizontal level, on the back of the picture.Find the tension in the string if the string is 1.0m long
asked by anon on February 6, 2011 
Algebra
Amount of an investment. AMount of an investment rate r is given by A=P + + rt. Rewrite this formula by factoring out the greatest common factor on the righthand side. Find A if $8300 is invested for 3 years at a simple interest rate of 15%.
asked by Lisa on June 3, 2010 
history help
as of 1154 when Henry II became England had all of the following regions except Noramndy, Burgundy, Brittany Scottland, Anjou I am not sure if the answer is Burgundy or Scottland  this is my study guide for quarter exam thanks I have read everything I can
asked by sam on March 15, 2009 
Math
Brad is paid timeandahalf if he works over 40 hours in a week. one week he worked 55 hours and earned $697.50.Write and solve an equation that can be used to find Brad's regular hourly rate.
asked by Hanna Hyung on February 24, 2014 
Physics
At time an object of mass 50.34 g on the end of a horizontal spring is moving to the right at 10 cm/s and is displaced 2 cm to the left from the equilibrium position. If the spring constant is 0.234N/m, find an expression for the position of the particle
asked by Supansa on May 11, 2016 
Physics
An aluminum wire is hung between two towers and has a length of 175 m. A current of 125 A exists in the wire, and the potential difference between the ends of the wire is 0.300 V. The density of aluminum is 2700 kg/m3. Find the mass of the wire
asked by Mathe on October 24, 2011 
precalculus
A sphere is contained inside of a cube, tangent to all six faces. Find the surface area of the cube as a function of the radius of the sphere. The answer in the back of the book read:A=24r^2...How did they get this answer? Thanks for helping!
asked by Acorn on September 1, 2008 
Maths(permutation)
A teacher prepares 5 different books for 7 students.If each student can get one or no book from the teacher , find the number of ways of distributing the books among the students. can u explain it to me detailly.i have thought about this question for
asked by Nada on May 8, 2012 
physic
A tennis ball is projected horizontally from the top of a cliff 50m high with a velocity of 10ms 1 , find (a) the time taken to reach the ground (b) the distance from the foot of the cliff to where the ball hits the ground.
asked by jaja on August 16, 2016 
Physics
At time an object of mass 50.34 g on the end of a horizontal spring is moving to the right at 10 cm/s and is displaced 2 cm to the left from the equilibrium position. If the spring constant is 0.234N/m, find an expression for the position of the particle
asked by Supansa on May 10, 2016 
biology
Name at least 3 useful purposes for bacterial endospores. I have only 2, which are: produce antibiotics and produce toxins that kill insects. Also, how is the spore location within the cell used to differentiate species? All I could find is that the
asked by Holly on February 2, 2010 
History
I am writing an article about Industrial Workers and I need to add a fictitious interview with an industrial worker about the struggles that they faced in the late 19th Century in this article. Can you please help me find an interview for this? I have
asked by B.B. on December 17, 2009 
Physics
A ball is thrown horizontally from a height of 16.01 m and hits the ground with a speed that is 5.0 times its initial speed. What was the initial speed? Ok so I got a vertical final velocity of 17.714 m/s. Now I need to find the horizontal speed, correct?
asked by Lindsay on November 4, 2007 
English 11
what are then meanings of the elements for American Romanticism?? *Love of nature *Supernatural *The exotic *Selfindividuals *National Pride *Idealism anyone please help!! or can send me a link where i can find the definitions to theses 7 elements of
asked by Caitie on June 1, 2010 
sci 207
Geologists are responsible for identifying and mapping mineral resources. But mineral resources are buried below the soil and covered with vegetation. How do you suppose geologists in the field find clues about the distribution of rock types?
asked by tamika on July 6, 2011 
trigonometry
can you tell me how to actually do this. find thenumebr of radians through which the hour hand of a clock turns in 5 hours. i don't know what i did, this is what i wrote: 360degrees=1 hour 1800 degrees=5 hours 1800(pi/180) somehow i got 10pi which is
asked by please check on January 7, 2009 
math
A ladder is intended to reach the wall of a building, but it must clear a fence with the length of d that stands at the distance b from that wall. Find the shortest length of ladder required to arrange this. note use differential calculus
asked by manjeet on April 7, 2018 
A level, Mechanics
An object of mass 100 kg is suspended by two identical cables. The tension in cable one is (400i + 300j)N, where i and j are horizontal and vertical unit vectors respectively. The tension in cable two is (pi + qj)N. If the object remain at rest, find p and
asked by Tony on April 19, 2012 
physics
A 2.1 103kg car starts from rest at the top of a 5.9mlong driveway that is inclined at 19° with the horizontal. If an average friction force of 4.0 103 N impedes the motion, find the speed of the car at the bottom of the driveway. m/s
asked by monic on October 12, 2012 
physics(URGENT!!!!!)
An object of mass m=80 kg moves in one dimension subject to the potential energy U(x)=λ4(x2−a2)2+b2x2.(1) Here we use λ= 1 kg/(m2s2), a= 7 m, and b= 11 kg/s2. (a) How many equilibrium points (stable and unstable ones) does this potential have? n=
asked by Anonimus on November 2, 2013 
math
ben wants to decorate his bedroom wall with colored square tiles of the same size. The area he wants to tile is a rectangle measuring 60 inches by 96 inches. He uses only whole tiles. Find the greatest possible length of each side of a tile.
asked by amy on August 29, 2012 
math plz help
In your last 23 basketball games, you attempted 101 free throws and made 66. Find the experimental probability that you make a free throw. Write the probability as a percent, to the nearest tenth of a percent. A. 65.3% B. 69.8% C. 69.7% D. 65.7% unsure
asked by LovelyCaity on October 8, 2014 
the odyssey
what is an important theme in the odyssey,Part 2?Describe the events that illustrate this theme? You need to go to www.sparknotes.com/lit, find Odyssey (in the O section, not the T's), read through the themes section, and decide. Let us know what you
asked by johnny on March 2, 2007 
Chemistry
It took 400 calories of heat to raise 50 mL of water from 20 degrees Celsius to its final temperature. What was that temperature? Ok I understand the equation q=mass x SH x change in temp. I am lost on how to set it up to find my final temp. Please help.
asked by Shambrey on March 14, 2011 
calc
Find an equation of the tangent line to the curve at the given point. y = 6 x sin x P= (pi/2 , 3pi) i know the slope of a tangent line is equal to the first derivative. For that I got 6xcosx + 6sinx but idk how to put that into the yy1=m(xx1) formula to
asked by calc on September 14, 2010 
trigonometry
a tower 150 meter is situated at the top of the hill.At a point 650 m down the hill.The angle between the surface of the hill and the line of sight to the of the tower is 12degrees 30 '.Find the inclination of the hill to a horizontal plane.
asked by lee12 on February 12, 2015 
Physics
A bullet of mass m=0.05kg embeds itself in a block of mass M=1.2kg, which attached to a spring of force constant k=245N/m. If the initial speed of the bullet v0=1.32m/s, find the maximum compression of the spring
asked by Tammy on May 6, 2019 
Math (2 of 3)
4. Find the GCF of the polynomial, then factor. 8v⁶ + 2v⁵  10v⁹ 5. Simplify the product of the binomial [5t + 4]² 6. A rectangle has dimensions 3x 1 and 2x + 5. Write an expression for the area of the rectangle as a product and in standard
asked by D on April 2, 2018 
Chemistry
A saturated solution of a certain metal(II) chloride has a chloride ion concentration of 0.032M. The Ksp for this compound can be determined to be is? This is similar to another question I posted that gave the Ksp and I had to find the pH. I am not sure
asked by Hannah on April 9, 2012 
Probability
A group of 90 students is to be split at random into 3 classes of equal size. All partitions are equally likely. Joe and Jane are members of the 90student group. Find the probability that Joe and Jane end up in the same class.
asked by qwerty on February 23, 2014 
Math
You are given 9 to 1 odds against tossing three heads with three coins, meaning you win $9 if you succeed and you lose $1 if you fail. (Find the expected value of the described game. Would you expect to win or lose money in 1 game? in 100 games? Explain.
asked by Chris on April 14, 2011 
MathTrig
Trig Questions 1. Write the algebraic expression which shows Cos((ArcSin(4/X)), 2. Angle If Csc(Θ)=15/4? 2.  what quadrant is it in, find the sin(Θ), Sin(Θ), Tan(90degΘ), Tan(Θ), csc(Θ), Sec(Θ+360deg), Thanks
asked by Ram on March 15, 2009 
Math
The Chavara family buys a house for $225,000. They pay $50,000 down and take out a 30year mortgage on the balance. Find their monthly payment and the total amount of interest they will pay if the interest rate is 6%.
asked by lynne on November 6, 2010 
math
A middle school is made up of grades 6, 7, and 8, and has about the same number of male and female students in each grade. Explain how to use a simulation to find the experimental probability that the first 50 students who arrive at school are male and 7th
asked by Sorina on December 13, 2017 
Math Help
The number of bacteria present in a culture is given by the following model B=1000e^0.276t; where t= time in minutes. Find the time required to have 6000 bacteria present. Then, round your answer to the nearest tenth of a minute.
asked by Micki on November 14, 2014 
Math
Sonia draws a line between Los Angeles and San Diego on a map. Find the shortest distance between the two cities. If the scale is 1 inch = 50 miles, what is the distance in miles between the two cities. A.25, B.50, C.100, D.150? Please help me
asked by Pier Smiley on December 17, 2016 
Physics
Find the initial accerleration of a rocket if the sstronauts on board experience eight times their normal weight during an initial vertical ascent. (Hint: In this exercise, the scale force is replaced by the normal force.)
asked by GY on November 7, 2011 
Physics
Find the center of mass of a rectangular plate of length 28.6cm and width 14.3cm . The mass density varies linearly along the length. At one end, it is 6.79g/cm^2,at the other end, it is 35.3g/cm^2 Show steps and explanation in X and Y
asked by Vinh on October 18, 2013 
Physics
A small turtle moves at a speed of 186 furlongs per fortnight. Find the speed of the turtle in centimeters per second. Note: 1 furlong = 220 yards, 1 yard = .9144 meters, and 1 fortnight = 14 days.
asked by Chris on September 8, 2015 
Texas Government
Campaign spending limits for state judicial races a. are mandatory. b. are voluntary. c. help Democratic candidates but hurt Republican candidates. d. have been effective in reducing campaign spending. I cannot find this answer. C and B are obviously not
asked by HM on November 16, 2011 
algebra
When Charlotte planted her tomato plant, it grew 3 inches in one week. After 5 weeks, the tomato plant was 23 inches tall. Assume the relationship is linear. Find and interpret the rate of change and the initial value.
asked by natalie on November 17, 2014 
MATh (check my answer please)
A salesperson makes a flat fee of $20 per day plus $8per hour. Which equation or inequality can be used to find h, the number of hours the salesperson will have to work to make more than $60 for a day's work? F. 20h + 8 = 80 G. 8h + 20 < 60 H. 8h + 20 = 60
asked by Sofie on April 20, 2011 
math
you have 3 hours to do your homework. you spend 45 min on math. you want to divide the time remaining equally along 4 subjects. write and solve the inequality to find the # of minutes you can spend on each subject. I know the answer is 33.75 but can you
asked by hunter on February 20, 2011 
physics
A centrifuge in a medical laboratory rotates at an angular speed of 3500 rev/min. When switched off, it rotates through 54.0 revolutions before coming to rest. Find the constant angular acceleration of the centrifuge in rad/s^2.
asked by angie on November 28, 2010 
Math
A cone is constructed by cutting a sector from a circular sheet of metal with radius 20cm. The cut sheet is then folded up and welded. Find the radius and height of the cone with the maximum volume that can be formed in this way.
asked by Lee Meyer on November 10, 2012 
Math
what is PSU's (penn state university)"annual scholarship" i have to fill out the yearly tuition & the room and board amount which all equals to $36,144. I need the annual scholarship amount but idk where to find that information...
asked by surfsupmel on May 30, 2011 
algebra
Determine whether y varies directly with x. If so, find the constant of variation k and write the equation. The table ges right side dwnards, 7,8,9,10 the left side dwn ges 11, 13, 15, 17 Now I understand it I just don't knw how t write it. Help please
asked by Shadrick on November 10, 2012 
Statistics
You draw two cards from a standard deck of 52 cards and replace the first one before drawing the second. Find the probability of drawing a 4 for the first card and a 9 for the second card. Round your answer to the nearest thousandth. 0.039 0.019 0.155
asked by John on June 14, 2010 
calculus
For time, t, in hours, 0\le t\le1, a bug is crawling at a velocity, v, in meters/hour given by v = \frac{5}{1 + t}. Use \Delta t = 0.2 to estimate the distance that the bug crawls during this hour. Find an overestimate and an underestimate. Then average
asked by Anonymous on November 16, 2011 
Math
3. (2.56 x 10^6) x (3.56 x 10^2) = a. 9.1136 x 10^12 b. 91.136 x 10^8 c. 9.1136 x 10^8 d. 91.136 x 10^12 4. In a recent year, the population of California was about 2.52 x 10^7 people. Its land area is about 4.05 x 10^5 km2. What was the average number of
asked by Nick on October 21, 2016 
MathHelp please?
Michael owns 300 shares of a certain stock. Suppose the price of the stock drops by $4 per share. Write a multiplication equation to find the change in Michael's investment. I put 300x(300x[4]) is that right?
asked by Anna on November 14, 2011 
calculus
a graph shows the divends declared per share of stock for the colgatepalmolive company for the years 1988 through 1998. Find the slope of the line segment connecting the years 1988 and 1998
asked by andre on August 22, 2012 
trigonometry
From the top of a hill 700 ft high an observer notes that the angles of depression of two successive markerstones on a level ground, which leads straight away from the hill are 5 degree and 15 degree respectively. Find the distance between the two
asked by joan on January 18, 2012 
radical expressions
how do u simplify radical expressions such as cubed root of 125t^6w^2 4 125 has a cube root of 5 t6 has a cube root of t2 so you are left iunder the radial w2
asked by Sherilee on February 11, 2007 
physics
two forces of 62N and 95N are acting on an object at an angle of30 degree and 60 degree from horizontal in opposite direction . find out total force experienced by the object in horizontal and vertical planes?
asked by anupriya on May 22, 2012 
Life
Okay, so this isn't homework help or anything but can someone help me find some websites like this one but where i can get advice on different things like...well i have this guy problem and i really don't know what to do and i was just wondering if there
asked by Jane S. on February 18, 2009 
Alegebra 1
How do I figure this out? The fax mailer brought a fax mcahine for $600. The fax machine depreciates at a rate of $20 a month. (a) find a function F that can be used to determine the value of the fax machine t months after purchase complete the model
asked by Need Help on September 23, 2009 
Math Please HELP
If the supply function for a commodity is given by the equation p = q2 + 12q + 700 and the demand function is given by the equation p = 1800  10q  q2, find the equilibrium quantity and equilibrium price. (Round your answers to two decimal places.)Thank
asked by Steve on November 2, 2014 
Physics
FM radio signals are electromagnetic waves transmitted between frequencies of 88 MHz and 107 MHz. Find the range of wavelengths for these signals. largest I have used the equation, but im doing something wrong, so if i could get the answer instead of just
asked by Justin on April 16, 2012 
math
A test is composed of six multiple choice questions where each question has 4 choices. If the answer choices for each question are equally likely, find the probability of answering 3 OR 4 questions correctly. 0.131836 0.032959 0.004639 0.164795
asked by molly on June 19, 2010 
Calculus
Squares with sides of length x are cut out of each corner of a rectangular piece of cardboard measuring 3 ft by 4 ft. The resulting piece of cardboard is then folded into a box without a lid. Find the volume of the largest box that can be formed in this
asked by Allison on November 4, 2012 
Math, Precalc
Find, to the nearest tenth of a degree, the angle formed by the two main diagonals of a cube that connect consecutive vertices of the lower base to the opposite consecutive vertices of the upper base, as illustrated at right.
asked by Allison on November 6, 2016 
Algebra
The revenue in dollars from a school play is given by the expression 5x+2y, where x is the of adult tickets sold and y is the number of student tickets sold. If the revenue is $220, find the x and y intercepts and explain what they represent in the
asked by Cc on September 3, 2015 
MATH
A salesperson makes a flat fee of $20 per day plus $8per hour. Which equation or inequality can be used to find h, the number of hours the salesperson will have to work to make more than $60 for a day's work? F. 20h + 8 = 80 G. 8h + 20 < 60 H. 8h + 20 = 60
asked by Shamar on April 20, 2011 
physics
A centrifuge in a medical laboratory rotates at an angular speed of 3800 rev/min. When switched off, it rotates through 46.0 revolutions before coming to rest. Find the constant angular acceleration of the centrifuge. in 1 rad/s2
asked by john on October 22, 2010 
World Studies
Where can I find geographical maps of northeastern Russia? See the links posted here: http://www.jiskha.com/display.cgi?id=1171316339 and here: http://www.lib.utexas.edu/maps/commonwealth.html =)
asked by Emily on February 12, 2007 
Algebra
A man drives from city to village a distance of 48 km ,in 45 minutes. Where the road surface is good , he drives at 72 km/hr and where it is bad , at 48 km/hr. Find the number of kilometres of good surface. (Form an algebraic equation and solve it).
asked by Zia on November 12, 2016 
history
What was the most effective remedy for plague? A. Snake venom B. Quarantine C. Abstaining from eating certain foods D. Armenian clay can someone help i found quarantine saved lives in the book. but im not sure if snake venom is the answer cause i cant find
asked by bob on May 29, 2011 
maths
A surveyor finds two points A and B on a hillside to be 114.6 metres apart(measured along the line of sight) and finds the angle of elevation from A to B to be 21 degrees.On his plans these points must be shown at their horizontal distance apart.Find this
asked by Shane on March 10, 2013 
physics
an 85.0kg mountaineer remains in equilibrium while climbing a vertical cliff. the tension force in the supporting rope is 745 N. Find the magnitude of the reaction force F, which the cliff exerts on the mountaineer's feet.
asked by a on October 3, 2017 
Linear Algebra
Consider the linear transformation T: R^3>R^3 which acts by rotation around the yaxis by an angle of pi, followed by a shear in the xdirection by a factor of 2. a) Find the matrix for T. Explain your method. b) What is T(1,2,3) c) Without calculation,
asked by Brody on March 5, 2014 
college Chemistry
Write a balanced equation for the dissolution of sodium carbonate (Na2CO3) in water. Find the number of moles of Na+ produced when 0.318 mol of sodium carbonate dissolves. Answer in units of mol.
asked by guy on January 24, 2009 
College Algebra
You have 800 feet of fencing to enclose a rectangular plot that borders on a river. If you do not fence the side along the river,find the length and width of the plot that will maximize the area. What is the largest area that can be enclosed?
asked by Anonymous on February 18, 2013 
Physics/Electricity
An aluminum wire carrying a current of 9.0 A has a crosssectional area of 7.0X10^6 m2. Find the drift speed of the electrons in the wire. The density of aluminum is 2.7 g/cm3. (Assume three electrons are supplied by each atom.)
asked by George on October 6, 2013 
Chemistry
1)What could have caused the impurity in the sodium hydroxide solution? 2)Why was it necessary to dilute the hydrochloric acid before carrying out the titration? This was a question from a titration practical in which we had to dilute HCL then use that
asked by Anon on October 18, 2014 
MathHelp
I posted this the other day but no one responeded. Yes, I am looking for the steps and a answer because I can not get it. Question: Area of Painting: A rectangular painting with a width of x centimeters has an area X^2 +50x square centimeters. Find a
asked by JASMIN on March 4, 2009 
Calculus
For the vector field G⃗ =(yexy+3cos(3x+y))i⃗ +(xexy+cos(3x+y))j⃗ , find the line integral of G⃗ along the curve C from the origin along the xaxis to the point (3,0) and then counterclockwise around the circumference of the circle x2+y2=9 to the
asked by A on November 20, 2015 
physics
a rocket of mass of 450000kg is in flight. its thrust is directed at angle of 62.5 degree above horizantal n has magnitude of 6000000 N. find the magnitude and direction of rockets acceleration. give direction as an angle above horizontal
asked by hy on November 21, 2010 
physics
A 2.10 103 kg car starts from rest at the top of a 5.8 m long driveway that is sloped at 25° with the horizontal. If an average friction force of 4.0 103 N impedes the motion, find the speed of the car at the bottom of the driveway.
asked by RNH on November 10, 2010 
Math
Given g(x) = print_coeff(m,1)x print_const(b), find g(print_coeff(n,1)a) I was told that the answer for this is a. However, I have no idea how to solve it. Please help me understand. I have no idea how to interpret what you have written. It is not standard
asked by Doralis on August 10, 2007 
US History
'Take a poll of your classmates to find out what they trust about the federal government and what they mistrust about it. Compile the answers into a list. Then use the list to make a bar graph of the top five answers.' Since I don't have classmates (.) I
asked by mysterychicken on November 10, 2010 
physics Helppp
3 mass are collienear formation A, B, C massA is 363 kg and is .5m away from mass B (517 kg)and mass B is .25m away from mass C (154kg) Find the magnitude and direction of the net gravitational force acting on each of the three particles (let the direction
asked by hy on November 21, 2010 
Calculus
a rectangular lot adjacent to a highway is to be enclosed by a fencing cost $ 2.50 per foot.along the highway $1.50 per foot on the other sides find the dimension of the largest lot that can be fenced off for $270. Thank you God bless. Badly need it
asked by Zhel on February 11, 2016 
calculusiii
he paraboloid z = 4 − x − x2 − 2y2 intersects the plane x = 4 in a parabola. Find parametric equations in terms of t for the tangent line to this parabola at the point (4, 2, −24). (Enter your answer as a commaseparated list of equations. Let x,
asked by Anonymous on February 17, 2013 
physics
total internal reflection between two materials is seen to occur if a critical angle of 60 degrees is exceeded. if the index of refraction of the material that the light is entering is 1.98,find the inndex of refraction of the material in which the light
asked by deondre thomas on November 22, 2011 
college math
in regard to my question find the median I put them into numeriacal order as follows 1400, 1550, 1700, 2500. 7000. the median should 1700 + 2500 total 4200 divided by 2 equal 2100
asked by Lourane on May 27, 2012 
statistics
the life of light bulbs is distributed normally. The variance of the life time is 225 and the mean lifetime of a bulb is 590 hours. Find the probability of a bulb lasting for at most 603 hours. Yeah, WTF??? Why me!??!
asked by Logan on May 3, 2012 
trig
From the top of a hill 700 ft. high, an observer notes that the angles of depression of two successive markerstones on a level ground, which leads straight away from the hill are 5 degree and 15 degree respectively. Find the distance between the two
asked by Grail on January 14, 2012
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