
physics
Find the resultant force of a 32N force pulling horizontally on a wooden crate and a 20N force pulling at an angle of 49 degrees upward of horizontal. (Your answer should include magnitude and direction of the force)
asked by Jade on December 4, 2009 
8TH GRADE MATH EXPRESSIONS
A catering business charges $50 for setting p a meal and $150 for enough food for 12 people. You will be using the caterer for an upcoming celebration. There will be 32 people at the party. Find the total cost to use the caterer for the party.
asked by CAMERON on August 23, 2012 
College Algebra
Find a linear equation in the form P = mt + b (y = mx + b), which gives the population, p, t years from 2010. This scenerio is based on a population of 6,000 in the year 2010, and increases by 200ppl every year. Please show the work too
asked by Carmine on November 30, 2008 
math
I have to make a checker board 40cm by 40cm and it has to have 8 even squares in each row. Is the 40 cm 15 3/4 inches? and how do you measure each square to be equal? You'll need a ruler with centimeters. Then divide 40 by 8 to find the size (in
asked by jared on April 1, 2007 
physics
A bridge is supported at both ends (500m between supports). A Car (250 Kg) is at 100m from the left support. A truck (4000 Kg) is at 200m from the left support. Find the forces on the supports
asked by Mark on March 28, 2013 
algebra
The radius needed to create a sphere with a given volume V can be approximated by the equation r = 0.62(V)1/3. Find the radius of a sphere with a volume of 216 cubic meters. Round the answer to the nearest hundredth.
asked by Anonymous on July 7, 2013 
physics
If an object is initially moving with a constant velocity of 20m/s towards positive xaxis and after 5 sec it changes its direction and moving at an angle of 30o with xaxis, find magnitude and direction of its acceleration.
asked by Anonymous on October 26, 2014 
Math
The profit (in millions of dollars) from the sale of x million units of Blue Glue is given by p= .7x25.5. The cost is given by c= .9x +25.5 (a) Find the revenue equation. (b) What is the revenue from selling 10 million units? (c)What is the breakeven
asked by Brooke on April 9, 2013 
Math
Evaluate log(6)√6 (actual question) There's a problem in my book that says: Convert each logarithm to a natural logarithm and evaluate log(5)√288 the answer in the back is 1.7593 but I can't find an example of those kinds.
asked by Jon on April 22, 2009 
Calculus
Given the equation xy = 2, set up an integral to find the length of path from x = a to x = b and enter the integrand below. I did the integral from b to a and set it equal to the sqrt(1+4/x^4), because I found y to equal 2/x and the derivative to be
asked by Katelyn on March 13, 2009 
Physics
How can you find the velocity of a bullet fired from a nerf gun the second it leaves the gun, if all you have is the angle it was shot at, and how far it traveled? (All in degrees) 0 degrees=2.54m 10=6.24m 30=6.54m 45=6.58m 60=1.6m 80=.94m
asked by Tiana on September 26, 2013 
physics
An object is projected vertically upwards. It’s height hm at time t seconds is given by h=20t3/2t^2  2/3t^3, find: a) the time at which it is momentarily at rest b) correct to 2dp, the maximum height reached by the object?
asked by poppy👌🤔 on May 12, 2019 
linear programming
Maximize z = 16x + 8y subject to: 2x + y ≤ 30 x + 2y ≤ 24 x ≥ 0 y ≥ 0 Graph the feasibility region. Identify all applicable corner points of the feasibility region. Find the point(s) (x,y) that maximizes the objective function z = 16x + 8y.
asked by nmh on July 8, 2011 
Related Rates
A particle moves along a path described by y=x^2. At what point along the curve are x and y changing at the same rate? Find this rate if at time t we have x=sin t and y= sin^2t. I solved the first part and got (1/2, 1/4), but I have no idea how to tackle
asked by Shania on May 6, 2013 
Math
The graph of a quadratic function has vertex(3,4) and passes through the point (4,1). Find the equation of the function in standard form. Rewrite the equation in general form. Could someone explain to me how to do this, just don't understand.
asked by Untamed on December 5, 2011 
statistics
A lottery offers one $900 prize, one $600 prize, three $400 prizes, and five $100 prizes. One thousand tickets are sold at $6 each. Find the expectation of a person buys five tickets.
asked by Bruno on June 5, 2012 
Probability Help ASAP!
Giving a test to a group of students, the grades and gender are summarized below A B C Total Male 17 5 2 24 Female 7 11 12 30 Total 24 16 14 54 If one student was chosen at random, find the probability that the student was female.
asked by Amanda on October 1, 2016 
dynamics
Find the mass center of a cylinder with height L and a hemisphere glued to the top with radius R. L=2R. The cylinder is standing up on its bottom end with hemisphere on top. Im so lost on this and cant use the formula to work.
asked by spencer on February 8, 2009 
physics
a black ball of mass 2kg moving at velocity 10m/s collide with a stationary white ball of mass 3kg.find their common velocity if they stick together after collision?
asked by javeria on March 27, 2019 
Maths please help
(a) Find the points which divide the line joining A(1,3) and B(4,1) internally in the ratios: (i) 1:2 (ii) 1:1 (iii) 3:1 (b) On the same xy axes plot the point A(1,3) and B(4,1) and draw the line joining them. Add the three points which you calculated
asked by Jordan on November 1, 2016 
Math
Find the values of the six trigonometric functions of θ. (If an answer is undefined, enter UNDEFINED.) Function Value: csc(θ) = 4 Constraint: cot(θ) < 0 1) sin(θ)= 2) cos(θ)= 3) tan(θ)= 4) csc(θ)= 5) sec(θ)= 6) cot(θ)=
asked by Hi😱 on February 21, 2019 
Probability/Math
Find the probability that a randomly thrown dart will land in the shaded area of the dartboard. A square that is 6ft width by 6ft length 4ft width by 9ft length.
asked by Addy on March 16, 2010 
geometry
the lateral area of two similar solids are 16pie cmsquared and 9pie cmsquared. The volume of the larger solid is 128pie cm cubed. find the volume of the smaller solid please explain
asked by why on November 6, 2013 
Finite Math
The amount desired in a sinking fund is given. Find the periodic payments required to obtain the desired amount. A = $75,000, the interest rate is 7.2%, and payments are made quarterly for 4 years.
asked by Matt on February 18, 2013 
math
A cow is tied with a rope of length 14 m at the corner of rectangular field measured 20 m by 16 m. Find the area of the field in which the cow can graze. #anyone to help me with proper and systematic step by step solution
asked by kelvin on April 19, 2017 
Math
Find the unit rate. Enter your answer as a mixed number. A fertilizer covers 5/6 square foot in 1/2 hours. The unit rate is ____ square feet per hour.
asked by asiah on October 6, 2016 
math
suppose you copy a figure on the copier using the givin size factor. Find the scale factor from the orignal figure to copy in desimal form. for 200%, 150% 75% 50% 125% and 25%
asked by ashtyn on November 26, 2009 
physics
Three moles of an ideal gas are compressed from 5.5*10^2 to 2.5*10^2 m^3. During the compression, 6.1*10^3J of work is done on the gas, and heat is removed to keep the temperature of the gas constant at all times. Find the temperature of the gas. Can
asked by Stella on March 2, 2008 
MATH HELP ASAP
Giving a test to a group of students, the grades and gender are summarized below A B C Total Male 18 16 8 42 Female 7 17 9 33 Total 25 33 17 75 If one student is chosen at random, Find the probability that the student was NOT a female that got a "A"
asked by Amanda on October 1, 2016 
calculus
A force of 13 N is needed to keep a spring with a 2kg mass stretched 0.25 m beyond its natural length. The damping constant of the spring is c = 8. If the mass starts at the equilibrium position with a velocity of 0.5 m/s, find its position at time t.
asked by nicholas on July 16, 2012 
Math
The perimeter of a rectangle is 42ft. The length is 7ft. longer than the width. Find the dimensions. Write a system of linear equations and solve the resulting system. Let X be the length, and Y be the width.
asked by Denise on August 5, 2013 
calculus
for the point with cartesioan coordiantes (5,2) find polar coordinated such that r>0. express it in radians. so far i got the answer to be .38805...is dat the answer or should i add 2pie or 360 to get r>0? Add 2PI but it says to radians?
asked by amy on April 17, 2007 
PHYSICS
Three moles of an ideal gas are compressed from 5.5*10^2 to 2.5*10^2 m^3. During the compression, 6.1*10^3J of work is done on the gas, and heat is removed to keep the temperature of the gas constant at all times. Find the temperature of the gas. Can
asked by sTELLA on March 2, 2008 
Math
A Norman window has the shape of a rectangle surmounted by a semicircle. (Thus the diameter of the semicircle is equal to the width of the rectangle.) If the perimeter of the window is 24 ft, find the value of x so that the greatest possible amount of
asked by Ashleigh on November 14, 2011 
Math(analytic geometry)
I'm studying analytic geometry and i came accross this question;"find the tangents common to x²+ y²=8 and y²=16x.How am i going to work it out,please? I tried to work out their gradients which gave me x²+y²=8 2x+2ydy/dx=0 dy/dx=2x/2y =x/y y²=16
asked by Shyla on December 4, 2015 
maths
(a) Find the points which divide the line joining A(1,3) and B(4,1) internally in the ratios: (i) 1:2 (ii) 1:1 (iii) 3:1 (b) On the same xy axes plot the point A(1,3) and B(4,1) and draw the line joining them. Add the three points which you calculated
asked by Steven on November 1, 2016 
Algebra
A boat has a speed of 20 mph in still water. While traveling on a river at top speed, it went 40 miles upstream in the same amount of time it went 60 miles downstream. Find the rate of the river current.
asked by Rob on January 31, 2016 
Calculus
Find the volume of the solid obtained by rotating the region bounded by y=x^3, y=1, and the yaxis around the xaxis. What I did was: V=ç(0,1)pi(1x^3)^2 dx v=pi(x^7/7x^4/2+x) and I evaluated it for one since 0 is just going to be 0. and I got 9pi/14
asked by Jessica on October 13, 2011 
college chem
In the reaction PCl5(g) > PCl3(g) + Cl2 (g) 0.200 mol of PCl5 is introduced into a 2.00 liter vessel. At equilibrium, the concentration of Cl2 is found to be 0.0500 molar. Find Kc for the reaction.
asked by josh on March 7, 2010 
ALGEBRA
Suppose that people's heights (in centimeters) are normally distributed, with a mean of 165 and a standard deviation of 6. We find the heights of 60 people. (a) How many would you expect to be between 159 and 171 cm tall? (b) How many would you expect to
asked by Urgen please help on June 10, 2012 
Physics
A cute puppy walks 20 m at 30 degrees north of east and then continues another 45 m at 15 degrees south of east. Find the magnitude of the puppy's net displacement (or the distance from the starting point)
asked by Mary on October 6, 2016 
Maths
An aeroplane flies due north for 200 km and then turns due east and flies for a further distance of 325km. Find the bearing,to the nearest degree,of the aeroplane from its starting point.
asked by Shane on April 5, 2013 
MATH
Suppose that people's heights (in centimeters) are normally distributed, with a mean of 175 and a standard deviation of 6. We find the heights of 80 people. (a) How many would you expect to be between 168 and 182 cm tall? (b) How many would you expect to
asked by Lee Ann on August 24, 2011 
Calculus
Find the volume of the solid obtained by rotating the region bounded by y=x^3, y=1, and the yaxis around the xaxis. What I did was: V=ç(0,1)pi(1x^3)^2 dx v=pi(x^7/7x^4/2+x) and I evaluated it for one since 0 is just going to be 0. and I got 9pi/14
asked by Jessica on October 13, 2011 
Physics help 2
I've asked the question "what is the fundamental equation to find the speed of a rocket." That's what I am having problems with because there are more than one. How do I know which one is the preferred equation used? The preferred equation is the one that
asked by tracey on November 7, 2006 
math
A vehicle leaves a skid mark of 40 ft before stopping. What has the approximate speed of the vehicle before it stopped? (the formula is speed=.7 times length, then find the square root times 5.5) Is is 2535 mph?
asked by Summer on October 26, 2010 
math
Suppose that people's heights (in centimeters) are normally distributed, with a mean of 175 and a standard deviation of 6. We find the heights of 40 people. (a) How many would you expect to be between 169 and 181 cm tall? 1 (b) How many would you expect to
asked by apryl on August 24, 2011 
chemisty
I have data for titration of a strong base against a strong acid when I added volumes of NaOH 1 mL at a time to 50.00 mL of HCl to see the change in pH. One of the questions says to find the molarity of the HCl solution but how do I do this with the data.
asked by marla on February 6, 2012 
math
Can someone please check my work? Question~ Find the pointslope form of the equation that goes through these two points. (1, 20) and (8, 4.5) My Answer~ Y= y2y1/x2x1 (4.520)/(81) = 15.5/7 Rewrite 15.5/7 as (15.5)/7 Rewrite 15.5 as 31/2 = (31/2)
asked by Abby on January 13, 2016 
science
A hawk flies in a horizontal arc of radius 12.0 m at a constant speed of 5.4 m/s. It continues to fly along the same horizontal arc but increases its speed at the rate of 2.8 m/s2. Find the acceleration magnitude under these conditions.
asked by ahmad on August 6, 2015 
Chemistry
How do you find a molality and molarity of a solution? given the equations Molarity=moles/liters molality=moles solute/kg.of solvent Just that way. Use the definiton. You must have a problem which you can't solve. Post it and tell us what you don't
asked by Angie on May 9, 2007 
pme
a bullet moving at 270 m/s penetrates 5 cm into a tree limb, beforecoming to rest assuming that the force exerted by the tree limb is uniform, find its magnitude? mass of the bullet is 10 g
asked by babu lal on July 24, 2011 
Algebra
A riverboat cruise line has a boat that can travel 76 mi downstream in the same time that it takes to travel 52 mi upstream. The speed of the current in the river is 1.5 mph. Find the speed of the boat in still water.
asked by Paula on March 7, 2011 
maths plse help me..
The pilot of an aircraft flying horizontally at a speed of 1200 Km/hr observes an angle of depression of a point on the ground changes from 30 degree to 45 degree in 15 seconds. Find the height of the aircraft at which it is flying?
asked by Meenakshi on December 13, 2012 
trignometry
if alpha and beta are 2 different values of θ lying between 0 and 2π which satisfy the equation 6cosθ+8 sinθ=9 find the value of sin alpha + beta.i want the answer by quadratic method. can u help solving sum by that method
asked by usha on June 11, 2011 
physics
The Yerkes refracting telescope has a 1 m diameter objective lens of focal length 20 m.Assume it is used with an eyepiece of focal length 4.31 cm. Find the angular magniﬁcation of the planet Mars as seen through this telescope
asked by Jim on March 21, 2011 
physics
A 5.9 g coin sliding to the right at 23.4 cm/s makes an elastic headon collision with a 17.7 g coin that is initially at rest. After the collision, the 5.9 g coin moves to the left at 11.7 cm/s.Find the amount of kinetic energy transferred to the 17.7 g
asked by wendlen on March 17, 2013 
Algebra
A.Write and solve an equation to find three consecutive integers with a sum of 126. Let n= the first integer. B. In part A, could you solve the problem by letting n= the middle integer,n1= the smallest integer, and n+1= the largest integer?
asked by Brianna on October 13, 2011 
physics
A concrete wall of thickness one metre of a dam can withstand a side pressure of 10 5 2 N m . Find the thickness of sidewall at the bottom of the water dam at a depth of 100 m. [ g =  10 m 2 s and density of water = 10 3 kg/m3 ]
asked by maha on April 1, 2014 
Algebra
Below is my problem with my answers. I don't think this is that tough, but I cannot believe that my ABC answer's are a fraction. Did I do this correctly? Find the unknowns on the right side of the partial fraction.
asked by Tim on April 18, 2008 
physics
a rotating disc of mass 'm', radius 'r', thickness 'D' can rotate in vacuum with constant angular velocity 'w' . now the disc is placed in water of density 'p', find the time in which its angular velocity becomes half.
asked by rishi on January 15, 2015 
math
a plane with an airspeed of 192mi/h is headed on a bearing of 121 degrees. a north wind is blowing (from north to south) at 15.9 mi/h . find the ground speed and the actual bearing of plane.
asked by T on May 24, 2008 
Stats
The waiting times between a subway to Podger schedule and the arrival of the passenger on uniformly distributed between zero and nine minutes find the probability that a randomly selected passenger has been waiting greater than 3.25 minutes
asked by Ella on March 11, 2015 
math
write a five digit number(s) that fits each description. use only the digits that the athletes are wearing. use each digit only once in each answer. The digits on athletes are: 4,1,8,3,6 find all the numbers between 6.129 and 6.381. order them from least
asked by John Dosley on December 11, 2013 
math
A swimming pool has a base 10 m by 12 m. Water evaporates from the pool at a constant rate of 10 liters per hour. Find the amount of water lost in one week and the change of depth in one week.
asked by Anonymous on May 17, 2017 
physics
A sphere of radius a carries a volume charge density p=p (r/a)^2. Find the electric field inside and outside the sphere. I don't know what equation to use. Do I use electirc field due to point charge?
asked by Jessica on February 28, 2008 
chemistry
I need to find out which structure is more correct: Reaction of the compound C3H8O with CrO3 (oxidizing agent) yields acetone. Which of the three structures is more correct? (My three structures are as follows: 1propanol, 2propanol, and methylethyl
asked by ella on January 18, 2011 
Math
The perimeter of a rectangle is 36ft. the length is 10ft. longer than the width find the dimensions. Write a system linear equation an solve the resulting system let x be the length and y be the width.
asked by Denise on August 5, 2013 
History
Hey everyone, I am doing research about Confucius and my teacher told me to use the internet to do my research. The only problem is I cannot find an answer to this question if someone could help me out the question is: Why was Confucius never able to
asked by Howard on November 30, 2018 
Math
A weather forecast states that there is a 20% probability of rain on each of the next 3 days. Describe a simulation you could perform using random numbers to find the experimental probability that it will not rain on any of the next 3 days. Would love
asked by Anonymous on April 5, 2017 
Math
from a barrel of colored marbles, you randomly select 5 blue, 2 yellow, 3 red, 4 green, and 2 purple marbles. Find the experimental probability of randomly selecting a marble that is not yellow.
asked by Maria on May 18, 2016 
Math
The circular area A in square centimetres of a healing wound is given by A(r)=πr^2 Where r =the radius in centimetres. Find the rate of change of the area with respect to the radius. My work: I'm not really sure if this is correct but I gave it a try.
asked by Nicki on February 24, 2016 
Physics
A motorcyclist is trying to leap across a canyon by driving horizontally off a cliff (height= 60 m) at a speed of 25 m/s. The cycle strikes a cliff on the other side (height= 30 m) at a speed of 15 m/s. Find the work done by air resistance.
asked by Daniela on November 11, 2015 
Applied Calc 2
he marginal cost function for a manufacturing company is given by dollars per box, where q is the number of boxes manufactured. If , find the total cost of manufacturing 10 boxes. Round to the nearest dollar.
asked by Anonymous on October 12, 2011 
Trig
Find all solutions of the equation in the interval [0,2pi) 2 cos^2 xcos x = 0 2cos^2 + cosx + 0 (x+1/2) (x+0/2) (2x+1) (x+0) 1/2,0 2Pi/3, 4pi/3, pi/2, 3pi/2 my teacher circled pi/2 and 3pi/2 What did I do wrong? I don't understand...
asked by Anonymous on April 10, 2017 
science
A motorcyclist is trying to leap across a canyon by driving horizontally off a cliff (height= 60 m) at a speed of 25 m/s. The cycle strikes a cliff on the other side (height= 30 m) at a speed of 15 m/s. Find the work done by air resistance.
asked by Daniela Belen on November 11, 2015 
physics
A 2.31 × 103 kg car requires 4.2 kJ of work to move from rest to some ﬁnal speed. During this time, the car moves 26.0 m. Neglecting friction, ﬁnd a) the ﬁnal speed. Answer in units of m/s
asked by billybob on November 18, 2014 
Math
a plane with an airspeed of 192mi/h is headed on a bearing of 121 degrees. a north wind is blowing (from north to south) at 15.9 mi/h . find the ground speed and the actual bearing of plane.
asked by Tareena on May 24, 2008 
Eng. Essay  Writeacher
Writeacher or Bobpursley, or anyone who could help me with my essay. I don't know why I cannot find the post that I needed help on, my essay was on traditional families versus TV show families. I included more information. I wish I could include the link
asked by Farrell on February 20, 2012 
math
In his algebra class, Rob has scores of 79, 85, 81, and 65 on his first four tests. To get a grade of C, the average of the first five tests must be greater than or equal to 70 and less than 80. Solve an inequality to find the range of scores that Rob can
asked by jack on May 18, 2011 
Honors chemistry
i am doing a project for school and i was told to research the alloy of 16 carat gold. I have found all the other information that i need, but i cannot find the melting or boiling point of 16 carat gold! please help soon my project is due tomorrow.
asked by Anonymous on October 30, 2011 
Statistics
A box contains four balls labeled 1,2,3,4 respectively. Two balls will be sequentially selected from the box at random without replacement. Let Y1 be the maximum of two outcomes and Y2 be the minimum of two outcomes observed. Find the joint probability
asked by Ed on February 10, 2012 
algebra 1
In February, you have a balance of $80 in your bank account. Each month you deposit $20. Let January = 1, February = 2, and so on. Write an equation for this situation. Use the equation to find the balance in December. y = 20(x – 4); $200 y  80 = 20(x 
asked by Lana on December 18, 2015 
physics
a uniform rod of mass M is hinged at its upper end. A particle of mass m moving horizontally strikes the rod at its midpoint elastically. If the particle comes to rest after collision find the value of M/m
asked by OINDRILA on November 20, 2012 
Maths
(a) Find the points which divide the line joining A(1,3) and B(4,1) internally in the ratios: (i) 1:2 (ii) 1:1 (iii) 3:1 (b) On the same xy axes plot the point A(1,3) and B(4,1) and draw the line joining them. Add the three points which you calculated
asked by steven on October 31, 2016 
physics
A speedboat increases in speed from 20 m/s to 30 m/s in a distance of 200m. Find (a) the magnitude of its acceleration and (b) the time it takes the boat to travel this distance. (a) (I am not sure what the magnitude is) (b) 200m x s/30m = 6.67s (is this
asked by Anonymous on September 6, 2007 
Math Help!
Giving a test to a group of students, the grades and gender are summarized below A B C Total Male 17 5 2 24 Female 7 11 12 30 Total 24 16 14 54 If one student was chosen at random, find the probability that the student was female.
asked by Anonymous on October 1, 2016 
maths
each side of a square flower bed is 2cm and 8cm it is extended by diging strip of 30cm wide all around it,find the area of enlast and also increase in area flower bed.
asked by manisha on January 19, 2011 
math
how do you8 find unit rate divide quantity by time. For instance, one travels 45 miles in 1/2 hour. Unit rate= 45/.5=90miles/hr the answer to your problem is x=18 the answer to your problum is x=18
asked by brianna on March 6, 2007 
English
1. Most never ask ourselves if and how television might hurting us. (Do we have to use 'ourselves'? How about 'themselves' in place of 'ourselves'?) 2. Below you will find the costs and benefits of watching television. (Does 'costs' mean 'disadvantages'
asked by rfvv on January 25, 2017 
math
Suppose that people's heights (in centimeters) are normally distributed, with a mean of 165 and a standard deviation of 6. We find the heights of 60 people. (a) How many would you expect to be between 158 and 172 cm tall? 1 (b) How many would you expect to
asked by Anonymous on August 29, 2012 
math 209
The perimeter of a rectangle is 44ft the length is 4ft longer than the width. Find the demensions. Write a system of linear equations and solve the resulting system. Let x be the length and y be the width.
asked by chris on July 17, 2011 
ALGEBRA
Suppose that people's heights (in centimeters) are normally distributed, with a mean of 165 and a standard deviation of 6. We find the heights of 60 people. (a) How many would you expect to be between 159 and 171 cm tall? (b) How many would you expect to
asked by Mike on June 10, 2012 
Math Help!
Giving a test to a group of students, the grades and gender are summarized below A B C Total Male 17 5 2 24 Female 7 11 12 30 Total 24 16 14 54 If one student was chosen at random, find the probability that the student was female.
asked by Anonymous on October 1, 2016 
maths
(a) Find the points which divide the line joining A(1,3) and B(4,1) internally in the ratios: (i) 1:2 (ii) 1:1 (iii) 3:1 (b) On the same xy axes plot the point A(1,3) and B(4,1) and draw the line joining them. Add the three points which you calculated
asked by Davon on October 31, 2016 
Math
Can I get some help? 1. If v = (5, 3), 5 v^2 2. For the following vector v, find u, the unit vector with the same direction angle as v. V = 25j Does u = j? 3. True or False: To graphically add two vectors, V+w, using the tiptotail method,
asked by mysterychicken on June 8, 2013 
Math
in still water, a speed boat travels 5 times faster than the current of the river. If the speed boat can travel 48 miles upstream and then back in 5 hours, find the rate of the current.
asked by Amy on March 7, 2016 
science
there is a cup with 75ml of orange juice. A marble was dropped into the cup and the level of the juice rose to 90 ml. Why did this happen? Find the volume of the marble. Use math and show/label all work.
asked by eddie on February 17, 2009 
Physics
A rocket of mass 4.5 e5 kg is in flight. Its thrust is directed at an angle of 58.5° above the horizontal and has a magnitude of 7.50e6 N. Find the magnitude and direction of the rockets acceleration. Give the direction as an angle above the horizonal.
asked by Joe on February 10, 2012 
Math
In January, the price of a kilogram of potatoes at Supermarket X was $3.20. In May, a kilogram of the same type of potatoes cost $2.99. Find the percentage decrease in price. Express your answer correct to 1 decimal place.
asked by Drake on October 4, 2016
Pages
 1
 2
 3
 4
 5
 6
 7
 8
 9
 10
 11
 12
 13
 14
 15
 16
 17
 18
 19
 20
 21
 22
 23
 24
 25
 26
 27
 28
 29
 30
 31
 32
 33
 34
 35
 36
 37
 38
 39
 40
 41
 42
 43
 44
 45
 46
 47
 48
 49
 50
 51
 52
 53
 54
 55
 56
 57
 58
 59
 60
 61
 62
 63
 64
 65
 66
 67
 68
 69
 70
 71
 72
 73
 74
 75
 76
 77
 78
 79
 80
 81
 82
 83
 84
 85
 86
 87
 88
 89
 90
 91
 92
 93
 94
 95
 96
 97
 98
 99
 100
 101
 102
 103
 104
 105
 106
 107
 108
 109
 110
 111
 112
 113
 114
 115
 116
 117
 118
 119
 120
 121
 122
 123
 124
 125
 126
 127
 128
 129
 130
 131
 132
 133
 134
 135
 136
 137
 138
 139
 140
 141
 142
 143
 144
 145
 146
 147
 148
 149
 150
 151
 152
 153
 154
 155
 156
 157
 158
 159
 160
 161
 162
 163
 164
 165
 166
 167
 168
 169
 170
 171
 172
 173
 174
 175
 176
 177
 178
 179
 180
 181
 182
 183
 184
 185
 186
 187
 188
 189
 190
 191
 192
 193
 194
 195
 196
 197
 198
 199
 200
 201
 202
 203
 204
 205
 206
 207
 208
 209
 210
 211
 212
 213
 214
 215
 216
 217
 218
 219
 220
 221
 222
 223
 224
 225
 226
 227
 228
 229
 230
 231
 232
 233
 234
 235
 236
 237
 238
 239
 240
 241
 242
 243
 244
 245
 246
 247
 248
 249
 250
 251
 252
 253
 254
 255
 256
 257
 258
 259
 260
 261
 262
 263
 264
 265
 266
 267
 268
 269
 270
 271
 272
 273
 274
 275
 276
 277
 278
 279
 280
 281
 282
 283
 284
 285
 286
 287
 288
 289
 290
 291
 292
 293
 294
 295
 296
 297
 298
 299
 300
 301
 302
 303
 304
 305
 306
 307
 308
 309
 310
 311
 312
 313
 314
 315
 316
 317
 318
 319
 320
 321
 322
 323
 324
 325
 326
 327
 328
 329
 330
 331
 332
 333
 334
 335
 336
 337
 338
 339
 340
 341
 342
 343
 344
 345
 346
 347
 348
 349
 350
 351
 352
 353
 354
 355
 356
 357
 358
 359
 360
 361
 362
 363
 364
 365
 366
 367
 368
 369
 370
 371
 372
 373
 374
 375
 376
 377
 378
 379
 380
 381
 382
 383
 384
 385
 386
 387
 388
 389
 390
 391
 392
 393
 394
 395
 396
 397
 398
 399
 400
 401
 402
 403
 404
 405
 406
 407
 408
 409
 410
 411
 412
 413
 414
 415
 416
 417
 418
 419
 420
 421
 422
 423
 424
 425
 426
 427
 428
 429
 430
 431
 432
 433
 434
 435
 436
 437
 438
 439
 440
 441
 442
 443
 444
 445
 446
 447
 448
 449
 450
 451
 452
 453
 454
 455
 456
 457
 458
 459
 460
 461
 462
 463
 464
 465
 466
 467
 468
 469
 470
 471
 472
 473
 474
 475
 476
 477
 478
 479
 480
 481
 482
 483
 484
 485
 486
 487
 488
 489
 490
 491
 492
 493
 494
 495
 496
 497
 498
 499
 500
 501
 502
 503
 504
 505
 506
 507
 508
 509
 510
 511
 512
 513
 514
 515
 516
 517
 518
 519
 520
 521
 522
 523
 524
 525
 526
 527
 528
 529
 530
 531
 532
 533
 534
 535
 536
 537
 538
 539
 540
 541
 542
 543
 544
 545
 546
 547
 548
 549
 550
 551
 552
 553
 554
 555
 556
 557
 558
 559
 560
 561
 562
 563
 564
 565
 566
 567
 568
 569
 570
 571
 572
 573
 574
 575
 576
 577
 578
 579
 580
 581
 582
 583
 584
 585
 586
 587
 588
 589
 590
 591
 592
 593
 594
 595
 596
 597
 598
 599
 600
 601
 602
 603
 604
 605
 606
 607
 608
 609
 610
 611
 612
 613
 614
 615
 616
 617
 618
 619
 620
 621
 622
 623
 624
 625
 626
 627
 628
 629
 630
 631
 632
 633
 634
 635
 636
 637
 638
 639
 640
 641
 642
 643
 644
 645
 646
 647
 648
 649
 650
 651
 652
 653
 654
 655
 656
 657
 658
 659
 660
 661
 662
 663
 664
 665
 666
 667
 668
 669
 670
 671
 672
 673
 674
 675
 676
 677
 678
 679
 680
 681
 682
 683
 684
 685
 686
 687
 688
 689
 690
 691
 692
 693
 694
 695
 696
 697
 698
 699
 700
 701
 702
 703
 704
 705
 706
 707
 708
 709
 710
 711
 712
 713
 714
 715
 716
 717
 718
 719
 720
 721
 722
 723
 724
 725
 726
 727
 728
 729
 730
 731
 732
 733
 734
 735
 736
 737
 738
 739
 740
 741
 742
 743
 744
 745
 746
 747
 748
 749
 750
 751
 752
 753
 754
 755
 756
 757
 758
 759
 760
 761
 762
 763
 764
 765
 766
 767
 768
 769
 770
 771
 772
 773
 774
 775
 776
 777
 778
 779
 780
 781
 782
 783
 784
 785
 786
 787
 788
 789
 790
 791
 792
 793
 794
 795
 796
 797
 798
 799
 800
 801
 802
 803
 804
 805
 806
 807
 808
 809
 810
 811
 812
 813
 814
 815
 816
 817
 818
 819
 820
 821
 822
 823
 824
 825
 826
 827
 828
 829
 830
 831
 832
 833
 834
 835
 836
 837
 838
 839
 840
 841
 842
 843
 844
 845
 846
 847
 848
 849
 850
 851
 852
 853
 854
 855
 856
 857
 858
 859
 860
 861
 862
 863
 864
 865
 866
 867
 868
 869
 870
 871
 872
 873
 874
 875
 876
 877
 878
 879
 880
 881
 882
 883
 884
 885
 886
 887
 888
 889
 890
 891
 892
 893
 894
 895
 896
 897
 898
 899
 900
 901
 902
 903
 904
 905
 906
 907
 908
 909
 910
 911
 912
 913
 914
 915
 916
 917
 918
 919
 920
 921
 922
 923
 924
 925
 926
 927
 928
 929
 930