
math
For the pair of numbers (1/5),(1/2) My teacher wants us to find the quadratic equation with integral coefficients that has these numbers as solutions. I am not sure if I have the right equation for this. Could someone let me know if I am right or wrong
asked by kim on September 3, 2010 
math help
How do you figure out a related sentence for fractions? (here is the problem) t + 1/8= 3/5 multipy the 1/8 by 5/5 or it is 5/40 Then, mulipy the 3/5 by 8/8 to 24/40 Finally subtract 5/40 from both sides. Think out why it is done this way. What do you mean
asked by Emily on February 13, 2007 
statistics
Assume that a procedure yields a binomial distribution with a trial repeated n times. Use a binomial probabilities table to find the probability of x successes given the probability p of success on a given trial. n=8, x=2, p=0.30
asked by Kasey on June 30, 2014 
Statistics
The monthly salaries (in thousands of dollars) of a sample of sales representatives are as follows: 13, 7, 10, 9, 8, 13 Find the standard deviation of this sample of monthly salaries. Round your answer to at least two decimal places.
asked by Anonymous on December 22, 2016 
Stat
lottery offers one $900 prize, two $700 prize, two $400 prize and five $200 prize. One thousand tickets are sold at $5. Find the expectation if a person buys two tickets
asked by Leter on June 29, 2016 
Physics
A spherical body of diameter 4cm falls freely through air with the velocity of 0.5m/s. The coefficient of velocity of air is 2*10^5Nm/m^2.find the viscous force acting on the body.
asked by Aparna on March 30, 2017 
ALGEBRA
If the principal P = $900, the rate r = 7 1/2 %, and time t = 1 year, find the following. What is the amount of interest? What is the future value? Ok found I think I found the interest 900x0.075=67.50 is this correct.Now I need help in finding the future
asked by MONICA on November 23, 2011 
physics
A wooden cart with frictionless wheels on level ground is given a push of 45.0 N. What must be the mass of the cart if it accelerates at 0.500 m/s/s? I know I need to use F=MA, but I was wondering if 45.0 N is the net force. If it's not, how would I find
asked by Misty on November 23, 2009 
physics
(a) A hydrogen atom has its electron in the n = 5 level. The radius of the electron's orbit in the Bohr model is 1.323 nm. Find the de Broglie wavelength of the electron under these circumstances. (b) What is the momentum, mv, of the electron in its orbit?
asked by jake on April 23, 2014 
statistics
If 80% of the applicants are able to pass a driver's proficiency road test, find the mean, variance, and standard deviation of the number of people who pass the test in a sample of 300 applicants.
asked by jean on October 1, 2010 
PreCalculus Help?
A 5lb force acting in the direction of (5, 3) moves and object just left over 12 ft. from point (0, 6) to (7, 4). Find the work done to move the object to the nearest footpound. a. 11 ft. * lbs b. 34 ft. * lbs c. 56 ft. * lbs d. 61 ft. * lbs
asked by ADOG on May 18, 2018 
Business math
Munshi saved rm 500 a year ago and x ringgit today , in an account that pays 8.5% compounded semi annually . Find the value of x if he wants rm 1000 in the account one year from today.
asked by Muhammad nur ikhwan on November 1, 2016 
Calc
If a car is driving in a straight line with constant acceleration a, initial velocity v0, and initial position s0, find a formula for the position function of the car. How would I solve this equation?
asked by James on November 1, 2016 
Calc
A Norman window is constructed by adjoining a semicircle to the top of a rectangular window as shown in the figure below. If the perimeter of the Norman window is 24 ft, find the dimensions that will allow the window to admit the most light.
asked by Coc on November 4, 2015 
Physics
Hi, The resistance of each resistor in a seriesparallel circuit was given and we measured the current and voltage across each resistor. Now, I have to find the theoretical values for I1, I2, etc. and V1, V2, V3, etc., using Kirchhoff's law and the known
asked by Sophia on February 28, 2010 
(Please help) Math
1) initial investment = $600 annual % rate = ? time to double = ? amount after 10 years = $19,205.00 19,205 = 600e^(10r) I do not know how to solve for r of find the time to double.
asked by Hannah on February 9, 2010 
Math 112 Help please
Students were asked to find three consecutive whole numbers whose sum is 393. John wrote the equation (x  1) + x + (x + 1) = 3. Kim said that John is incorrect, and that the correct answer should be x + (x +1) + (x + 2) = 393. is this correct
asked by Abigaile on November 13, 2014 
Math
Ok we are doing central angles and arcs and I can't figure out how to solve this problem: An arc is 70.7 m long and it subtends a central angle of 2ð/7. Find the diameter of the circle. How do you solve for this type of problem?
asked by Breann on September 16, 2007 
math
The assessment rate in the XYZ country is 80% and the tax rate is $66.80 per $1,000 of assessed value. Gregory has one property in the same area, and it has a market value of 250,000. Find the tax due.
asked by Anonymous on May 8, 2019 
physics
A 15.0gal container is filled with gasoline. Neglect the change in volume of the container and find how many gallons are lost if the temperature increases by 31.9°F. The volume expansion coefficient of gasoline is 9.60·104°C1
asked by mustafa on November 3, 2014 
math
the acceleration of an object varies directly as the force f exerted and inversely as its mass m. if the constant of variation is 1 find the acceleration in meters/second^ of a 10 kg object exerting force of 10 newtons
asked by iramae on October 29, 2016 
Second Grade Reading
Hello. I am a tutor. I tutor second grade students. I need a good website that will give me great tips on how I can better teach my students how to read, spell, and pronounce words. Can you please help me find a website like that?
asked by Qiayamah on September 28, 2013 
math/probability
Assume that the weight loss for the first two months of a diet program has a uniform distribution over the interval 6 to 12 pounds. Find the probability that a person on this diet loses more than 11 pounds in the first two months.
asked by katie on January 24, 2010 
Calculus
A particle with an initial velocity of 6 has its acceleration defined by a(t) = 2t+1. t is in seconds. find: a) its velocity equation b) the total distance traveled by the particle during its first 5 seconds of travel a) v(t) = t^2 + t  6 b) 24.17 units
asked by Yani on May 26, 2016 
maths
a right angled triangle has legs a,b (a is greater than b).the right angle is bisected splitting the original triangle into 2 smaller triangles.Find the dist btw. the orthocentres of the smaller triangles.
asked by Anonymous on December 31, 2012 
Science
I have a very simple question that needs quite a simple answer: Are all human brains an equal size? I typed these exact words on Google but I didn't find much information. I have a question following this one which is why I need this information. Thanks
asked by mysterychicken on February 17, 2009 
physics
Three objects of same heat capacity with temperature T1=200 K, T2=400 K and T3=400 K exchange heat with each other. They are isolated from the rest of the universe. Find the highest possible temperature one of them can reach in kelvin.
asked by j on June 4, 2013 
MathOptimization
The material for the base of a box will cost three times as much as the material for the sides and top of the box. The box must have a volume of 200 meters cubed. Find the most efficient way to built this box.
asked by Megan on May 27, 2008 
statistics
Assure that a procedure yields abinomial distribution with a trial repeated n times. Use abinomial probabilities table to find the probability if x sucesses given the probability of sucess of a given trial. n=6 x=0 p= 0.70
asked by angela on November 1, 2013 
math
A rectangular prism has a width of 92ft. and a volume of 240ft cubed. find the volume of a similar prism with a width of 23ft. I've been looking at this for a lonnggg time and I still cant figure it out. Can someone please explpain this for me?
asked by kelly on August 11, 2008 
calculus
A particle moves on a line away from its initial position so that after t hours it is s = 6t^2 + 2t miles from its initial position. Find the average velocity of the particle over the interval [1, 4]. Include units in your answer.
asked by Anonymous on February 2, 2015 
Physics (vectors)
Please help me with this question. I have a triangle that is not a right triangle with sides A, B, and C.(no values).The arrow's heads of A and B are joined and the arrow's head of C is in the tail of B. How do you find the resultant, the vector equation,
asked by Kathy on February 15, 2013 
Math
1. Find and simplify the volumetosurfacearea ratio for each of the three possible ice cube shapes. You can use this chart. Shape S/A FormulaVolume Formula Cube  S.A=6s^2  V=s^3 SphereS.A+4 pi r^2V=4/3 pi r^3 Cylinder S.A=2 pi r^2+2 pi rh V= pi
asked by Alexia Smith on March 3, 2016 
chemistry
80ml of hcl is added to 2.5gm of pure cac03 when the reaction is over, then 0.5gm cac03 is left. Find the normality of the acid The answer 0.5N Who helps step by step
asked by Fai on February 3, 2013 
math
Use 3.14 for pie to estimate the area of a circle. The diameter is given. Round your answer to the nearest hundredth if necessary. (the diameter is 14.1) 2. Find the missing length. Round to the nearest hudredth, if necessary. 624.26
asked by dori on May 27, 2019 
Math
Minta willwithdraw the moneyfrom her bank account when the interest earned is 300 euros. Find the time in years until Minta withdraws the money from her bank account.
asked by Alyssa on September 27, 2017 
physics
"The mass density of brain matter is 1.040 g/cm^3, and of that, the mass fraction which is hydrogen, is 0.107. Find the number of hydrogen protons in a volume of 1cm^3 of brain tissue"
asked by stephanie on April 11, 2011 
Physics
Suppose a soccer player kicks the ball from a distance 31 m toward the goal. Find the initial speed of the ball if it just passes over the goal, 2.4 m above the ground, given the initial direction to be 44° above the horizontal. Help please !
asked by Anton on September 28, 2015 
Math
Assume that the weight loss for the first two months of a diet program has a uniform distribution over the interval 6 to 12 pounds. Find the probability that a person on this diet loses between 10.5 and 12 pounds in the first two months.
asked by Michelle on February 5, 2010 
physics
Uniform rod of weight 10N and length 5m is supported by ropes from points P and Q. The rope at P is attached 1.0m from end M and the rope at Q is attached 0.25m from end O. find the tensions Tp and Tq
asked by samuel on February 24, 2011 
discrete math
Let f:ℤ+ → ℤ+ be the function defined by: for each x ∈ ℤ+, f(x) is the number of positive divisors of x.  find integers m, n, nd k so tha f(m)=3, f(n) = 4 anf f(k) = 5 is f oneto one? Explain, is f unto? prove is it true that all positive odd
asked by excel on March 20, 2014 
Calculus
A right circular cone has a volume of 100 cubic inches. What shape should it be in order to have the smallest lateral surface area? Find the results of the volume is V cubic inches.
asked by Ms_Da on October 18, 2016 
Math
The angle of elevation of the top of a flagpost from a point on a horizontal ground is found to be 30 degree. On walking 6m towards the post, the elevation increased by 15 degree. Find the height of the flagpost.
asked by Thejesh on April 3, 2016 
Precalc/Trig
I don't understand how to do these problems: Find two pairs of polar coordinates for each point with the given rectangular coordinates if 0 ≤ θ ≤ 2π. Round to the nearest hundredth, if necessary. 17. (2, 3) Answers: (3.61, 5.30) and (3.61, 2.16)
asked by Heather on January 21, 2015 
Length and width
The width of a rectangle is 2ft less than its length. The area is 8ft^2. Find the length and width. I can't seem to come up with anything that equals 64 sq ft. Do I start with area 64sqft.=W x L2. I feel like I should be coming up with something around 7
asked by Marysvoice on February 18, 2008 
algebra 2
A 2mi cab ride costs $1.70. A 7mi cab ride costs $3.70. Find a linear equation that models cost c as a function of distance d. a. c = 0.53d + 0.90 b. c = 0.85d + 2.00 c. c = 0.40d + 0.90 d = 0.40c + 2.00
asked by nino on October 26, 2014 
physics
A metal sphere of radius 10cm is given a electric charge find electric intensity and potential at a point whose distance from centre of sphere is: a) 20cm b) 10cm and just outside c)5cm.
asked by vishnu s dharan on June 11, 2016 
Math
You estimate that a puppy weighs 12 pounds. The actual weight of the puppy is 14 pounds. Find the percent error. Round your answer to the nearest hundredth of a percent. Help me Im stuck..!
asked by Melissa on February 29, 2016 
Algebra
A home’s back yard drops 9 feet over a horizontal distance of 124 feet. Find the slope of this back yard. Round your answer to two decimal places
asked by Rebecca on December 12, 2010 
Maths
Two observers P and Q 15m apart observe a kite in the same vertical plane and from the same side of the kite.The angle of elevation of the kite from P and Q are 35 degree and 45 degree respectively.Find the height of the kite to the nearest metre.
asked by Debbie on January 29, 2015 
Statistics
A random sample of 60 riders waited in line a mean time of 42 minutes with standard deviation 12 minutes. Find a 90% confidence interval for the populationmean waiting time in line
asked by Lost37 on March 21, 2013 
Physics
Suppose a soccer player kicks the ball from a distance 30 m toward the goal. Find the initial speed of the ball if it just passes over the goal, 2.4 m above the ground, given the initial direction to be above the horizontal.
asked by Drew on January 31, 2016 
pre calc
use an appropriate halfangle formula to find the exact value ofthe expression. tan22.5 write the product as a sum sinxsin5x write the sum as a product sin2xsin7x
asked by Anonymous on July 12, 2012 
calculus
An airplane is flying at 550 km/h on a heading of 080 degrees. The wind is blowing at 60 km/h from a bearing of 120 degrees. Find the ground velocity of the airplane and include the new bearing.
asked by Sam on February 14, 2010 
Business
Hey guys. I really need your help picking out a new business name. Which do you like/find catchier??? The business is a local "swapping" online site. Thanks a lot. SwapEm Swap Ventures SwapEm Local
asked by Matt on January 26, 2011 
Numerical Analysis
use a graph, or guess and then confirm a bracket, or tabulate f(x) on a wide interval to figure the bracket of length one. to find an interval of length 1 that contains a root of the equation 3x^3 +x^2=x+5. I don't understand what to do
asked by Ashley on September 2, 2014 
calculus
Find the points of the paraboloid z=x^{2}+y^{2}1 at which the normal line to the surface coincides with the line joining the origin to the point. What is the acute angle betwwen the normal and the zaxis at these points?
asked by RAJ on October 18, 2014 
physics
Suppose a soccer player kicks the ball from a distance 28 m toward the goal. Find the initial speed of the ball if it just passes over the goal, 2.4 m above the ground, given the initial direction to be 55° above the horizontal.
asked by Anonymous on September 14, 2015 
Math
ella sold 37 necklaces for $20 each at the craft fair. she is going to donate half of the money she earned to charity. use ecommutative property property to mentally find how much money she will donate.
asked by Suzy on September 26, 2017 
Algebra
Write and solve an equation to find how much warmer Montana's average 3 month temperature is than Minnesotas. Montana weather is 0.7 degrees celsius and Minnesota is 2.5 degrees celsius
asked by Gavin on September 22, 2015 
physics
An airplane travels 2800 km at a speed of 700 km/h, decreases its speed to 500 km/h for the next 1500 km and travels the last 1000 km at a speed of 400 km/hr. Find the average speed of the plane for the trip.
asked by nikita on September 13, 2011 
Physics
A weight stretches one spring 3 in. and a second weight stretches another spring 9 in. If both weights are simultaneously pulled down 1 in. below their respective equilibrium positions and then released, find the first time after t = 0 when their
asked by Viet on November 27, 2010 
Math
Find the effective rate corresponding to the given nominal rate. (Round your answer to the nearest hundredth of a percentage point.) (a) 4%/year, compounded quarterly ? % (b) 3%/year, compounded monthly ? %
asked by Amanda on November 23, 2012 
Math
Find the effective rate corresponding to the given nominal rate. (Round your answer to the nearest hundredth of a percentage point.) (a) 4%/year, compounded quarterly ? % (b) 3%/year, compounded monthly ? %
asked by Amanda on November 23, 2012 
math
the area of rectangular plot of land fenced all round is 2000 sq. yards and the total length of fencing 180 yards. find the length and width of plot.
asked by kashif on December 13, 2015 
Math
Assume you own a sporting goods business. Find the selling price for a tent costing $387, based on a 25% markup on selling price. $387/75% = $516 can anyone tell me if this is correct?
asked by Heyhi on May 6, 2018 
science
A point object is acted upon by forces of 4N, 5N and 6N is in equilibrium. IF=f the 6N force is removed, what is the resultant force on the object now? I really want to know how tow find relationship between 3 forces, and is there anything to do with cos
asked by liam on October 11, 2012 
math 5th grade
Victoria has 2 pounds of flour she uses 2/5 of flour for pizza and 3/10 of the flour for bread. Find the weight of the flour she has left. Express in decimal form. I worked on this and the answer I came up with was 19.2 lbs left?
asked by mary on November 19, 2015 
calc
The velocity of a particle moving along the xaxis is v(t) = t2 – 2t, with t measured in minutes and v(t) measured in feet per minute. To the nearest foot find the total distance travelled by the particle from t = 0 to t = 3 minutes..
asked by Anonymous on August 22, 2015 
math trigonometry
A ladder 8.5m long is placed with its foot at a distance of 4m from the wall of a house and just reaches a window will . find the height of a window will and the sine and tan of the angle which the ladder makes with the wall
asked by priya on April 17, 2015 
Math
A coneshaped pile of sawdust has a base diameter of 40 feet, and is 15 feet tall. Find the volume of the sawdust pile. Round your answer to the nearest hundredth if necessary. Use 3.14
asked by Lauren on June 8, 2016 
calculus review please help!!
The velocity of a particle moving along the xaxis is v(t) = t^2 + 2t + 1, with t measured in minutes and v(t) measured in feet per minute. To the nearest foot find the total distance traveled by the particle from t = 0 to t = 2 minutes.
asked by Jane on April 27, 2017 
math
Let f:ℤ+ → ℤ+ be the function defined by: for each x ∈ ℤ+, f(x) is the number of positive divisors of x.  find integers m, n, nd k so tha f(m)=3, f(n) = 4 anf f(k) = 5 is f oneto one? Explain, is f unto? prove is it true that all positive odd
asked by excel on March 20, 2014 
Math
A rectangular livestock pen with THREE SIDES of fencing is to be built against the barn. The fencing is 1050ft long. Find the dimensions of the maximum area that can be enclosed. What is the maximum area?
asked by Tom on April 23, 2013 
physics
You throw a ball straight down from an apartment balcony to the ground below. The ball has an initial velocity of 5.25 m/s, directed downward, and it hits the ground 1.94 s after it is released. Find the height of the balcony.
asked by Nour on September 13, 2011 
physics
suppose a soccer player boots the ball from a distance 35 m into the goal. find the initial speed of the ball if it just passes over the goal, 2.4 m above the ground, given the initial direction to be 40° above the horizontal
asked by Anonymous on October 23, 2014 
Calculus
I'm supposed to find the average value of the function over the given interval. f(x) = sin(nx), interval from 0 to pi/n, where n is a positive integer. I know the average value formula, and I know that the integral of that function would be (1/n)cos(nx),
asked by Anna on April 27, 2012 
Physics
A converging lens forms a virtual image 2.61 times the size of the objecT. The object distance is 11cm. Find the distance of the focal point from the center of the lens.
asked by Adam on May 2, 2018 
calculus 4; multiple integration
The electrical charge distribution on a circular plate of radius R meters is given by the function f(x,y) = kx (1 sin y) in coulomb/m^2. Integrate the function over the entire plate to find the total charge Q.
asked by john on November 4, 2009 
math app
A salmon can swim 20 feet/sec downstream in a river. The salmon swims upstream at a rate of 6 feet/sec. Find the speed of the current. How do I set up the equation?
asked by Alex on December 16, 2015 
math
the distance between 2 station A and B is 230 km .two car start simultaneously from A and B in the opposite directions and the distance between them after 3 houra is 20 km. If the speed of one car is less than that of the other by 10 km per hour, find the
asked by simon on March 8, 2012 
math
Divide the rectangles by tens and ones for each factor. Find the number of squares in each smaller square. Then add the numbers of the squares in the four rectangles : 200+40+40+8=288 So, 12x24 =288
asked by jason on December 5, 2011 
CALCULUS  need help!
this was on the math test that i got wrong... The position equation for the movement of a particle is given by s=(t^21)^3 when s is measured in feet and t is measured in seconds. Find the acceleration at two seconds... i found the first derivative but i
asked by Anonymous on November 18, 2007 
Quick calc question
A particle moves on a line away from its initial position so that after t hours it is s = 4t^2 + t miles from its initial position. Find the average velocity of the particle over the interval [1, 4]. Include units in your answer.
asked by Mel on January 29, 2016 
Math; Please help and thank you
sin(x+(pi/4)) sin(x(pi/4))=1 1. Apply the sum and difference formulas for sine to simplify the lefthand side of the equation. 2. find all the solutions you found to the equation you found.
asked by Alisa on January 29, 2014 
MATH
Assume that the weight loss for the first two months of a diet program has a uniform distrbiution over the interval 6 to 12 pounds. Find the probability that a person on this diet loses more than 11 pounds in the first two months.
asked by KAYTLYN on October 31, 2009 
math(Please please help!!!)
1) initial investment = $600 annual % rate = ? time to double = ? amount after 10 years = $19,205.00 19,205 = 600e^(10r) I do not know how to solve for r of find the time to double.
asked by Hannah on February 8, 2010 
Calculus
f(t)= 2te^t^2, [0,5] Find average value. Attempt: I know that the average value is the integration of f(t) from a to b divided by ba. I used u substitution to get u= t^2 and du= 2xdx. I changed the limits of integration to [0,25] and I got integral of
asked by Alex on October 29, 2009 
10th grade
Where can I find a complete description about North American racial ideologies from 1500 to 1830 and their effects on Latin American Racial ideologies? Does this mean the transition from slavery to freedom?
asked by anonymous on September 2, 2009 
geometry
two triangular roofs are similar. The ratio of the corresponding sides of these roofs is 2:3. If the altitude of the smaller roof is 4.5 feet, find the corresponding altitude of the larger roof. Round to the nearest hundredth. A. 7.5 B. 6.75 C. 6 D. 4
asked by ashley on September 17, 2010 
science
a passenger in a ferris wheel rates 3m/s in a vertical circle of radius 5m. find the apparent the ratio of his apparent weight to his true weight at the top and bottom of the circle
asked by neliswa on May 17, 2012 
english
how did people dress in Elizabethan England? How did the way people dress differ depending on his or her social status? what was the music of the Elizabethan era like? Who were some famous composers? please help me because I cant find these answers
asked by Teara on May 11, 2011 
8th grade math
Find the interest earned on each account. $970 at 4 1/2% simple interest for 2 years. I don't know if I solved the problem correct please help: I = p x r x t = 970 x 0.42 x 2 = 814.8 I don't know what number to convert 1/4 to!
asked by Destiny on November 28, 2012 
SCIENCE?CHEMISTRY***
DR Bob, can you go through the steps to work this out please.... how many grams of alcohol with a density of 0.900 g/cm ^3 (cm cubed) will have the same volume as 20.0g of mercury,with a density of 13.6 g/cm ^3 Do you have to find the volume of mercury
asked by ANDY on May 14, 2010 
physics projectile
a body is projected horizontally with a velocity of 80m/s from the top of a tower 160m above the ground. find the time of flight,range,velocity at which the body strikes the ground
asked by wisdom on January 29, 2016 
Physics
A spherical concave mirror has a radius R=360 mm forms an image of a h(object)=12 cm high object located d0=p=0.9 m from the vertex of the mirror. Find the position di=q(cm) and the height cm of the image.
asked by Shilpa on December 7, 2010 
Math/Geometry
i need help figuring out how to find the area of this trapezoid. two sides have 8cm, another one has 10cm, and the last one has 16cm. Also, there is a dashed line inside of the trapezoid that is 7cm. A. 8 cm squared B. 62 cm squared C. 84 cm squared ** D.
asked by Kate on April 16, 2018 
Math
A fishing boat travel from a harbour on a bearing of 140 degree for 60 kilometer to an lsland a. How far due east does it travel b. Find the bearing required to return to the harbour .
asked by Olive on May 29, 2019 
College Algebra
Find all solutions of the equation. Check your solutions in the original equation. (Enter your answers from smallest to largest. Enter NONE in any unused answer blanks.) 16t^2/3 + 40t^1/3 + 25 = 0
asked by Jack on July 13, 2013 
math
find all solution to the equation 3 cos(x+4)=1. in the interval of 0
asked by alicia otto on March 26, 2016
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