
Math
Assume that the average annual salary for a worker in the United States is $30,500 and that the annual salaries for Americans are normally distributed with a standard deviation equal to $6,250. Find the following: (A) What percentage of Americans earn
asked by Michael on October 28, 2012 
Trigonometry
A climber, working his way up a vertical cliff stops for a rest on the ledge. The ledge where he stopped is 12 meters wude. The angle of depression from the edge of the ledge to the bottom of the cliff is 72 degree and the angle of elevation to the top of
asked by Tomina on December 10, 2011 
English, Language arts
I have a project called "Time machine project" in my English class. It's literally a project that I have to search for any US region, state or city in past and compare to present. I also have to find short stories or poems about that. Do you have any
asked by U on July 29, 2017 
physics
An air condenser has an area of 100 cm^2 the plates being 4mm apart. It is connected in series with another condenser having plate area of 20cm^2 plates being separated by dielectric 0.1mm thick with E=2.5. If the potential difference across an condenser
asked by vicky on April 12, 2016 
algebra 2
Rosalyn works no more than 16 hours a week during the school year. she is paid $10 and hour for tutoring geometry students and $7 an hour for delivering pizzas for Pizza King. She wants to spend at least 6 hours but no more than 8 hours a week tutoring.
asked by jeanne on October 14, 2010 
Physics
a 9.50g bullet. moving horizontally with an initial speed vi , embeds itself in a 1.45kg pendulum bob that is initially at rest. The length of the pendulum is L=0.745m. After the collision, the pendulum swings to one side and comes to rest when it has
asked by AfterLife on August 5, 2011 
Chemistry
In the following reaction, first find how many oxygen molecules would be used to completely react with 230 grams of pentyl alcohol (C5H11OH)? Then, if exactly 1.505x10^21 carbon dioxide molecules were formed in this reaction, calculate the grams of water
asked by Melissa on November 24, 2017 
Chemistry
In the following reaction, first find how many oxygen molecules would be used to completely react with 230 grams of pentyl alcohol (C5H11OH)? Then, if exactly 1.505x10^21 carbon dioxide molecules were formed in this reaction, calculate the grams of water
asked by Melissa on November 24, 2017 
science
a 600 g pool ball moving at 2.0m/s hits a second pool of the same mass at rest. the first ball moves off at 1.5m/s at an angle of 30 degrees from the original direction. assume the surface of the pool table to b frictionless find the angle at which the
asked by hope on April 7, 2016 
physics
An air condenser has an area of 100 cm^2 the plates being 4mm apart. It is connected in series with another condenser having plate area of 20cm^2 plates being separated by dielectric 0.1mm thick with E=2.5. If the potential difference across an condenser
asked by vicky on April 12, 2016 
Algebra
The given graph represents the number of active servicemen in the region who are overweight. There were 3320 overweight servicemen in 1992, and 8310 overweight servicemen in 2002. Find the rate of change. The rate of change is ___? servicemen per year.
asked by Student5 on February 8, 2014 
Geometry
Find the value of x. There is two lines, they are not parallel. In between (connected) those two lines is a shape. A trapezoid by the looks of it. It is wide at the bottom and thin at the top. There are equations outside of the shape, so external angles.
asked by SkatingDJ on March 16, 2016 
math
Please show me how to solve: Hannah took a survey of 500 students at her school to find out whether they liked baseball or football. The results are shown in the Venn diagram. How many of the students surveyed like football? 28% liked baseball, 32% liked
asked by Jane on November 19, 2011 
Chemistry (Dr.Bob222)
The halflife of P32 is 14 days. How long after a sample is delivered can a laboratory wait to use a sample in an experiment if they need at least 10 percent of the original radioactivity? I need help on how to set up this problem. What is the general
asked by K on November 7, 2013 
Physics
A 70 kg man just before contact with the ground has a speed of 5 m/s In a stifflegged landing he comes to a halt in 7ms (miliseconds). Keeping in mind that the average net force acting on the man includes both the force of the ground on the man and the
asked by Kevin on November 30, 2010 
physics
A 120V motor has mechanical power output of 3.00 hp. It is 94.0% efficient in converting power that it takes in by electrical transmission into mechanical power. (a) Find the current in the motor. I got the same answers,17.5 A, whether I used round
asked by blast on August 17, 2010 
Physics
A 70 kg man just before contact with the ground has a speed of 5 m/s In a stifflegged landing he comes to a halt in 7ms (miliseconds). Keeping in mind that the average net force acting on the man includes both the force of the ground on the man and the
asked by Kevin on December 1, 2010 
math 165 calculas
An open box is to be made from a eighteeninch by eighteeninch square piece of material by cutting equal squares from the corners and turning up the sides (see figure). Find the volume of the largest box that can be made. figure ( a box and one side is
asked by akash on October 6, 2015 
Chemistry
In the following reaction, first find how many oxygen molecules would be used to completely react with 230 grams of pentyl alcohol (C5H11OH)? Then, if exactly 1.505x10^21 carbon dioxide molecules were formed in this reaction, calculate the grams of water
asked by Melissa on November 24, 2017 
Physics
For a piece of glass n(red)= 1.635 and n(blue)= 1.689. The respective wavelengths are 680nm (red) and 430nm (blue). Find the angle between these two colors of light in the glass if they were originally in a white light beam in air incident on the glass at
asked by chi on March 24, 2012 
physics
Only two forces act on an object (mass = 4.20 kg), as in the drawing. (F = 73.0 N.) Find the magnitude and direction (relative to the x axis) of the acceleration of the object. magnitude m/s2 direction ° counterclockwise from the +x axis The angle from
asked by Taylor on October 13, 2011 
Physics
Xrays with an energy of 300 keV undergo Compton scattering from a target. If the scattered xray are directed at 30 degrees relative to the incident rays, find a)The Compton shift at this angle b) The energy of the scattered xray c)The energy of the
asked by Jennifer on March 22, 2011 
Physics
A 70 kg man just before contact with the ground has a speed of 5 m/s In a stifflegged landing he comes to a halt in 7ms (miliseconds). Keeping in mind that the average net force acting on the man includes both the force of the ground on the man and the
asked by Kevin on December 2, 2010 
Physics
A 30.0 kg box is being pulled across a carpeted floor by a horizontal force of 230 N., against a friction force of 210 N. Calculate the acceleration of the box and find the x and y components of the acceleration of the box. Align the positive direction
asked by Anne on March 26, 2012 
science
a person standing on a road has to hold his umbrella at 60 degree vertical to keep the rain away he throws the umbrella and starts running at 20 m/s he finds that rain drops are falling in him vertically. find the speed of the rain drops with respect to
asked by jo145578 on July 1, 2012 
math
Assume that the average annual salary for a worker in the United States is $30,500 and that the annual salaries for Americans are normally distributed with a standard deviation equal to $6,250. Find the following: (A) What percentage of Americans earn
asked by Jen on October 25, 2012 
trig
an observer at A looks due north and sees a meteor with an angle of elevation of 70 degrees. At the same instant, another observer 30 miles east of A seed the same meteor and approximates its position as N 50 degrees W but fails to note its angle of
asked by olivia on January 11, 2015 
Motion Problems
A satellite which travels around the earth has a power supply that provides power according to the formula: P =(17200)/(t + 100) where t is the number of days the satellite is aloft. Find the rate at which power is decreasing after 380 days. rate in
asked by Brownie on January 29, 2013 
physics
a projectile is thrown from the ground with an initial velocity of 20.0 m/s at an angle of 40.0 degrees above the horizontal. find the projectile's maximum height, the time required to reach its maximum height, its velocity at the top of the trajectory,
asked by Anonymous on February 10, 2014 
Calculus
A lemon tree nursery usually sells a certain breed after 4 years of growth and shaping.the growth rate is approximated by: dh/dt =2.4t+3 where t is time in years and h is the height in cm. suppose that seedlings are 10 cm tall when planted (at t=0) a) find
asked by Anonymous on April 1, 2012 
preap physics
A 15.4kg block is dragged over a rough horizontal surface by a constant force 191N acting at an angle of 25.3 degrees above the horizontal. The block is displaced 80.4m and the coefficient of kinetic friction is. 2 A) find the magnitude of the work done by
asked by jay on January 11, 2012 
phsics
A ball is rotating in a horizontal circle at the end of a string of length 3.8 m at an angular velocity of 8.5 rad/s. The string is gradually shortened to 3.3 m without any force being exerted in the direction of the ball’s motion. Find the new angular
asked by owen on November 19, 2014 
Math
The scale on a map is 1 in: 4 miles. Find the actual distance in miles for each length on the map. 1/ 2 in. Answer: d=8 2/ 7.2 in. Answer: d=288 3/ 3.5 in. Answer: d=140 4/ 11 in. Answer: 44 Write the ratio as a scale in simplest form. 3cm\15cm Answer: 1/5
asked by Na on March 1, 2017 
Econ
The process that produces Sonora Bars (a type of candy) is intended to produce bars with a mean weight of 55 gm. The process standard deviation is known to be 0.77 gm. A random sample of 49 candy bars yields a mean weight of 55.82 gm. Find the test
asked by alex on April 22, 2014 
college physics
A man pushing a mop across a floor causes it to undergo two displacements. The first has a magnitude of 140 cm and makes an angle of 130° with the positive x axis. The resultant displacement has a magnitude of 144 cm and is directed at an angle of 30.0°
asked by caitlin on September 28, 2010 
physics
A bullet is fired horizontally with a velocity of 250 m/s from the top of a building 100m high. Find the Horizontal and vertical velocities of the bullet when it reaches the ground, the resultant velocity, the horizontal displacement, the net displacement,
asked by ellah on January 9, 2012 
statistics
The process that produces Sonora Bars (a type of candy) is intended to produce bars with a mean weight of 55 gm. The process standard deviation is known to be 0.77 gm. A random sample of 49 candy bars yields a mean weight of 55.82 gm. Find the test
asked by Anonymous on April 22, 2014 
science
A bullet is fired horizontally with a velocity of 250 m/s from the top of a building 100m high. Find the Horizontal and vertical velocities of the bullet when it reaches the ground, the resultant velocity, the horizontal displacement, the net displacement,
asked by purplekish on November 10, 2013 
Physics
A 1.50 kg snowball is fired from a cliff 13.0 m high with an initial velocity of 14.0 m/s, directed 41.0° above the horizontal. (a) Using energy techniques, rather than techniques of Chapter 4, find the speed of the snowball as it reaches the ground below
asked by Matt on July 24, 2010 
math
the simple interest received from investment is directly proportional to the amount of the investment. By investing $4000 in a municipal bond you obtain interest of $280 at the end of 1year. Find a mathematical model that gives the interest I at end of
asked by Marybeth on June 3, 2014 
Physics
A nail on a vertical wall is pulled by means of a chord attached to its head if the chord makes an angle of 60deg to the horizontal and it exact a force of 80N on the nail find the effective force which tends to pull the nail out of the wall and the force
asked by Great on September 19, 2017 
Math 11
I need help on this math problem. The width of a certain painting is 5cm less than twice the length. The length of the diagonal distance across the painting is 107cm. Find the length and width. Round your answer to 2 decimal places. How should I set up for
asked by Need Help on January 12, 2012 
Physics
A receiving antenna becomes misaligned by 30° to its original position. The power of the received signal in this new position is 12µW. Wavelength = 0.016 m I calculated the power received in the original position as 1.04 x 10^5 W What I need to find out
asked by Ramesh on November 16, 2018 
chemistry
A man pushing a mop across a floor causes it to undergo two displacements. The first has a magnitude of 152 cm and makes an angle of 125° with the positive x axis. The resultant displacement has a magnitude of 150 cm and is directed at an angle of 35.0°
asked by tea on January 25, 2010 
Physics
Xrays with an energy of 300 keV undergo Compton scattering from a target. If the scattered xray are directed at 30 degrees relative to the incident rays, find a)The Compton shift at this angle b) The energy of the scattered xray c)The energy of the
asked by amy on March 18, 2011 
math CAN SOMEONE PLEASE HELP
find the two ordered pairs of this equation. y=5/3x+8 then give the slope and y intercept. I know the slope is rise over run and is the y intercept 8? This is the answer I got but I am still really confused how do I get my two ordered pairs this makes no
asked by KiKi on March 28, 2010 
Physics
A large horizontal circular platform (M=143.1 kg, r=3.01 m) rotates about a frictionless vertical axle. A student (m=75.3 kg) walks slowly from the rim of the platform toward the center. The angular velocity ω of the system is 2.10 rad/s when the student
asked by Molly on February 11, 2014 
calculus
A car leaves an intersection traveling east. Its position t sec later is given by x = t2 + t ft. At the same time, another car leaves the same intersection heading north, traveling y = t2 + 3t ft in t sec. Find the rate at which the distance between the
asked by sal on October 19, 2011 
College Math
Suzan sees a bag of marbles, she grabs a handful at random. She has seen a bag containing three red marbles, four green ones, five white ones, and one purple one. She grabs seven of them. Find the probability of the following event, expressing it as a
asked by Anonymous on November 20, 2016 
Precalculus
I know I posted this before,but I did not learn it your way .....instead I drew a picture and use the law of cosines....is there a way you can show me the work using law of cosines?? A plane flies 30 mi on a bearing of 200 degrees and then turns and flies
asked by Anonymous on December 12, 2013 
Calculus
A lemon tree nursery usually sells a certain breed after 4 years of growth and shaping.the growth rate is approximated by: dh/dt =2.4t+3 where t is time in years and h is the height in cm. suppose that seedlings are 10 cm tall when planted (at t=0) a) find
asked by Anonymous on April 1, 2012 
Pre calculus
Okay, I'm really fuzzy about my log and exponential chapter. For example, solving some exponential equation such as e^3x7 x e^2x=4e I assume I start this equation by taking the natural log of both sides, but how will I know just by looking at an equation
asked by marcus on November 20, 2012 
Mathematics
a cylindrical Jar of radius 12 centimetre contains orange juice to a depth of 20 centimetre child drops and orange into the zar and the level of the juice Rises by 6.75 centimetre what is the radius of the orange if it is of the shape of a complete spare
asked by Nidhi on February 10, 2017 
Physics
A 70 kg man just before contact with the ground has a speed of 5 m/s In a stifflegged landing he comes to a halt in 7ms (miliseconds). Keeping in mind that the average net force acting on the man includes both the force of the ground on the man and the
asked by Jessica on November 18, 2010 
Algebra
Rose's garden is in the shape of a trapezoid. If the height of the trapezoid is 16m, one base is 20m, and the area is 224 m squared, find the length of the other base. The height dimension h is measure perpendicular to the to parallel "base" sides, a and
asked by Judy on March 13, 2007 
Stats  Please help me
A Bacteria has a doubling period of 8 days. If there are 2250 bacteria present now, how many will there be in 33 days? find the growth rate (Round this to 4 decimal places). Growth Rate___________. There will be _________ Bacteria. I came up with:.0668 for
asked by Bobbie on March 13, 2015 
Math
A biased coin lands heads with probabilty 2/3. The coin is tossed 3 times a) Given that there was at least one head in the three tosses, what is the probability that there were at least two heads? b) use your answer in a) to find the probability that there
asked by Steve on June 11, 2018 
Math
A rectangular study area is to be enclosed by a fence and divided into two equal parts, with a fence running along the division parallel to one of the sides. if the total area is 384 ft^2, find the dimensions of the study area that will minimize the total
asked by Sam on March 10, 2009 
Finte Math  Simplex Method
Just a few questions to make sure I am understanding the simplex method. First you set up matrice, then you find the column with the largest negative number in bottom row. That is the column you will pivot. So then how do you determine which row is the
asked by Robson on June 21, 2012 
precalc help
Find the exact value without a calc 1. log base 3 of 8 times log base 8 of 9. I started by changing both bases to 10 but don't know what to do from there. 2. e ^ log base e^2^9. I hope that isnt confusing. My teacher said we are suppose to get the bases
asked by Rebekah on November 21, 2012 
Physics
Figure shows a circular wire loop of radius r carrying current i placed in a perpendicular magnetic field B. Suppose that the radius of cross section of the wire is a. Find the decrease in radius of loop when magnetic field is switched off if Young’s
asked by Aaron on September 28, 2016 
math Trigonometry
If cos degree equals to 0.8641 What is Sin degree? I have no idea how to find this. Please help me. I got help from two people, but I'm not getting the answer and how they got the numbers either. Someone says: cos^2+sin^2=1
asked by Simran on November 5, 2016 
Trigonometry
An airplane is headed southwest (bearing 225°) with an air speed of 550 miles per hour, with the wind blowing from the northwest (bearing 135°) at a speed of 110 miles per hour. Find the drift angle, ground speed, and the course of the airplane.
asked by John on March 5, 2018 
Mathematics, Math
During a period of acute shortage of raw materials, the prices of some manufactured goods were raised by 25%. After the shortage was over, prices were lowered by 15%. If the original price of an article was $56, find its price after the shortage was over.
asked by Kaela on February 28, 2012 
Mathematics, Math
During a period of acute shortage of raw materials, the prices of some manufactured goods were raised by 25%. After the shortage was over, prices were lowered by 15%. If the original price of an article was $56, find its price after the shortage was over.
asked by Kaela on February 28, 2012 
Calculus
A particle starts at the point (5,0) at t=0 and moves along the xaxis in such a way that at time t>0 its velocity v(t) is given by v(t)= t/(1+t^2). a). Determine the maximum velocity of the particle. Justify your answer. b). Determine the position of the
asked by Rasheda on January 29, 2014 
classical mechanics
A projectile is launched down ward from the top of inclined plane of angle alpha in the direction making an angle beta with the incline. assuming the projectile hits the incline, find the expression for the range and determine the maximum expression for
asked by Henry on April 19, 2016 
Math
A tree one hundred cubits high is distant from a well two hundred cubits; from this tree one monkey climbs dow the tree and goes to the well, but the other leaps in the air and descends by the hypotenuse from the high point of the leap, and both pass over
asked by Lauren on July 15, 2012 
Physics please help!!
High speed stroboscopic photographs show that the head of a 188 g golf club is traveling at 52.5 m/s just before it strikes a 45.5g golf ball at rest on a tee. After the collision, the club head travels (in the same direction) at 44.0 m/s. Find the speed
asked by Megan on February 14, 2011 
Geometry
In my book there's a picture of an equalderal triangle. This is given information. Inside the triangle all three altitudes have been drawn to find the center point of gravity. The incircle is drawn. The circumcircle is drawn. Given that the radius of the
asked by Geometry on May 15, 2008 
math
I don't get how to put it in the the equation Interest=percent×rate×time This is the question The banded ribbon worm is a carnivorous aquatic worm. It measures about 2.5 ft. When expanded. Find the percent increase between the contracted and expanded
asked by emma on October 21, 2014 
Chemistry
Calculate the number of moles of carbon atoms present in 2.2 g of ethanol (C2H6O). For this question, I would just need to find the molar mass of carbon, right? Not the molar mass of all of ethanol? So it would just be 2.2 g/ 24.02 g/mol which would equal
asked by Alex on September 13, 2015 
Physics
A string of mass m=.1kg is stretched to where its length is L=20m. What is the tension force applied to the string if it takes a pulse 2 seconds to get from one end to the other? m=kg L=20m T=4s mass density =m/L = .1/20 = kg/m Tension =? I know
asked by Andrea on February 6, 2008 
math
Mrs. Sue Mrs. Sue!!!!!!!!! Pls help!!!! I am not good at this. Pls help me figure this out. And, PLs dont give a link. Thank You. P.s I dont even have an estimate. The radius of a cylinder is 3.5 ft. The height is 14 ft. Find the surface area and volume of
asked by h..... on March 8, 2019 
Math
Henry is a quality control inspector. He is watching the production line for Barb's Raisin Cookie. Henry will reject a cookie with less than 8 raisins. In the past, one out of every 100 cookies had less than 8 raisins. Find the probability that the first
asked by Anonymous on April 5, 2013 
math
The digits 2, 4, 6, 8 and 0 are used to make fivedigit numbers with no digits repeated. What is the probability that a number chosen at random from these numbers has the property that the digits in the thousands place and ten's place are each larger than
asked by Alex on December 11, 2018 
MATH PLEASEEEEE
I have a question, if f(x)=x/2 and g(x)=3x+1 find: a) (f+g)(x) i know you go x/2+3x+1. but how do i solve that?? b) (fg)(x) i know you go x/23x+1, how do i solve? c)(f*g)(x) how do i solve? (f/g)(x) how do i solve?? f(g(x)) how do i solve?? thanks for
asked by Jamie Lynn on December 16, 2008 
Calculus
Find F '(x) for F(x) = integral[x^3 to 1](cos(t^4)dt) a. cos(x^7) b. cos(x^12) c. 3x^2cos(x^12) d. cos(1)  cos(x^12)
asked by Jimmy on May 16, 2018 
Calculus I
Find the derivative of f(x) = sin^2 (e^sin^2 x) I wonder if I'm right F'(x) = 2cos(e^sin^2 x) (sin^2 x e^sin^2 x 1)
asked by Priscilla on March 21, 2012 
math
angle 1 and angle 2 are supplementary angles. m angle 1 is 4y + 7 and m angle 2 is 9y + 4. Find m angle 2.
asked by hotdognibba70 on September 6, 2017 
math
a card is picked from a pack containing 52 cards . it is then replaced and a second card is picked. Find the probability that a)both cards are the seven of diamonds, b)the first card is a heart and the second a spade. c)one card is from a black suit and
asked by terry on March 13, 2010 
math
a 132 inch lenght of ribbon is to be cut into 3 pieces the longest piece is to be 39 inches longer than the shortest piece and the third piece is to be half the length of the longest piece find the length of each piece of ribbon
asked by brandy on September 17, 2014 
Math
A rectangular prism has a width of 92 ft and a volume of 240 ft3. Find the volume of a similar prism with a width of 46 ft. Round to the nearest tenth, if necessary. 30 ft3 40 ft3 60 ft3 120 ft3 can someone please help me. I'm having trouble working this
asked by Ann on February 23, 2015 
Math
When Albert flips open his mathematics textbook, he notices that the product of the page numbers of the two facing pages is 156. Which equation could be used to find the page numbers that Albert is looking at? a. x+(x+1)=156 b.(x+1)+(x2)=156
asked by Angie on March 28, 2009 
Calculus
Could someone please check my work on the following problems? I want to be sure that I'm doing them correctly; i'm just required to find the derivatives and then simplify. g(t)= t/sint g'(t)=1*sintcost*t/(sint)^2 g'(t)=sintcost*t/(sint)^2 y=ln(e^ax)
asked by Joesph on October 19, 2008 
Math
1. Write the ratio in the simplest form. 50: 10 (1 point) 25: 5 10: 2 5: 1* 1: 5 2. Solve the following proportion x over 2 = 8 over 9 (1 point) 144 0.44 1.78* 36 3. Sarah’s mother has a miniature village modeled after her home town. The model is 10 feet
asked by anonymous on January 15, 2014 
Accounting
Jack Smith, a baker, has been working at his friend’s bakery a part time basis for the past 3 years. As of January 1, 2018, Jack decided to pursue his own dreams of buying and selling pastries. He rented a space from his friend and entered into the
asked by Kelia Kelly on November 21, 2018 
english
What are some advantagesfor both the reviewer and writerof peer reviews? How would you encourage a reluctant peer reviewer? Thank you for using the Jiskha Homework Help Forum. First of all, most of us hate to find our OWN mistakes! It is much more fun to
asked by GaPeach on August 22, 2006 
Math
A hotel packed a breakfast for each of three guests. Each breakfast should have consisted of three types of rolls, one each of nut, cheese, and fruit rolls. The preparer wrapped each of the nine rolls, and, once they were wrapped, the rolls were
asked by sadness on February 9, 2018 
History
1. Which of these was a precedent that George Washington set? (5 points) constitutional amendment process formal presidential dinners singing of the national anthem use of a presidential cabinet 2. "The time for the new election of a citizen to be
asked by YRN DJ on January 14, 2016 
Math
Write the fraction as a percent. Round to the nearest hundredth of a percent where necessary. a) 33.33% b) 66.67% c) 83.33%
asked by Anonymous on December 18, 2015 
Algebra: Quadratic Functions
A model rocket is launched with an initial velocity of 128 ft/s from a height of 70 ft. The height of the rocket, in feet, t seconds after it has been launched is given by the function s(t)=−16t^2+128t+70. Determine the time which the rocket reaches its
asked by Isiah on March 18, 2014 
inscribed angles
A satellite, B is 17,000 miles from the horizon of Earth, Earth's radius is about 4,000 miles. Find the approximate distance the satellite is from the Earths surface. possilbe answers 13,464 17,464 20,957 21,000 I do not understand how to do these problems
asked by lilman on May 10, 2012 
Chem
Then, determine the final volume needed to dilute 20.0 ml of 1.00 M NaOH to 0.25 M. Next, find the volume of water which needs to be added. Finally, determine the moles and the mass in grams of NaOH in the solutions. Do I take 60 ml and convert it to moles
asked by Feather on September 28, 2014 
Physics
A horizontal force of 150 N is used to push a 32.5kg packing crate a distance of 4.95 m on a rough horizontal surface. If the crate moves at constant speed, find each of the following. (a) the work done by the 150N force? (b) the coefficient of kinetic
asked by Abdalla A. on May 7, 2013 
College Algebra
At 1:30 Marlon left his house to go to the beach, a distance of 9.375 miles. He rose his skateboard until 2:15, and then walked the rest of the way. He arrived at the beach at 3:00. Marlon's speed on his skateboard is 1.5 times his walking speed. Find his
asked by Anonymous on September 2, 2017 
math
Centered 6 meters above the ground, a Ferris wheel of radius 5 meters rotates at 1 degree per second. Assuming that Jamie’s ride begins at the lowest point on the wheel, find how far Jamie is above the ground after 29 seconds; after 331 seconds; after t
asked by sarah B on April 13, 2010 
maths
from a batch of 10 eggs 3 are rotten.2 eggs are selected in succession.Find the probability that(a)both are rotten (b)only 1 is rottewn and at least 1 is fresh. b) Probability(1rotten, 1fresh)=3/10*7/9 Notice how the probabality after drawing one rotten,
asked by CELINA on June 6, 2007 
math, calculus
Consider the functionf(x)=3x. a. Determine an expression, in terms of a and h, for the average rate of change between the points (a,f(a)) and ( a + h, f(a+h) ) for the function . Show all steps needed to find a simplified algebraic expression. b. Using
asked by Emma Wallace on April 11, 2019 
Maths
A straight river flows at a speed of 20km/h. A boater starts at the south shore and heads in ths direction of 70degrees from the shore. The boat has a speed of 20km/h in still water. Find the true speed and direction of the boat.
asked by Anonymous on February 26, 2013
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