Sunday
November 23, 2014

Posts by ryan


Total # Posts: 916

ratio proportions
The ratio of apples to oranges is 4:5. I have 200 apples and oranges total. How many are apples?
November 18, 2014

math
a basketball team needs 5 players. the team can choose from a group of 7 players. explain how to find the combinations of players that can be on the team.
November 18, 2014

chemistry
The vapor pressure of liquid chloroform, CHCl3, is 100. mm Hg at 283 K. A 0.198 g sample of liquid CHCl3 is placed in a closed, evacuated 400. mL container at a temperature of 283 K. Assuming that the temperature remains constant, will all of the liquid evaporate? What will ...
November 11, 2014

Preschool/Kindergarten
d
November 7, 2014

Math
A marine biologist is testing a new under water probe. The probe is catapulted from the ship into the air, descends under water to a predetermined depth, and then returns to the surface where it can be collected. The function that models the probe’s path is f(x) = 15t2...
October 30, 2014

Chemistry
what is the limiting reagent in these two reactions Reaction 1: CuSO4+2NaOH=Cuo+Na2SO4+H2O Reaction 2: CuSO4+NaCO3=CuCO3+Na2SO4
October 22, 2014

Calculus
An inverted conical tank is being filled with water, but it is discovered that it is also leaking water at the same time. The tank is 6 meters high and its diameter at the top is 4 meters. The water is being added to the tank at a constant rate. Some of this water is found to ...
October 19, 2014

Calculus
A bright light on the ground illuminates a wall 12 meters away. A man walks from the light straight toward the building at a speed of 2.3 m/s. The man is 2 meters tall. When the man is 4 meters from the building, how fast is the length of his shadow on the building decreasing?
October 19, 2014

Calculus
A pulley system on a pier is used to pull boats towards the pier for docking. Suppose that a boat is being docked and has a rope attaching the boat's bow on one end and feeding through the pier's pulley system on the other end. The pulley system is 1 meter higher than ...
October 19, 2014

Check my answer?
Conditional statement based on a Venn diagram 2 circles: large circle says quadrilaterals smaller inner circle says squares If a shape is a square then it is a quadrilateral.
September 29, 2014

physics
A ball is thrown straight upward. At 4.36 m above its launch point, the ball's speed is one-half its launch speed. What maximum height above its launch point does the ball attain?
September 21, 2014

Math
I don't know it
September 15, 2014

Math
Help please
September 15, 2014

Math
Find the distance between points (6, 16) and (–1, 14) to the nearest tenth
September 15, 2014

Math
Find the other endpoint given the first endpoint and the midpoint A = (3, 5) B = (5, -11) find C
September 15, 2014

Maths
A boy is flying a kite on a string 33m long. The string which is being held at 1.5m above the ground, makes an angle of 39* with the horizontal. How high is the kite above the ground (nearest cm)
September 14, 2014

Calculus
Suppose the area under the curve y=xe^(-mx) from 0 to 1 is 0.4. Find m.
September 8, 2014

Calculus
I am trying to find the total area under the curve, not just the integral...
September 7, 2014

Calculus
Suppose the total area under the curve y=x^2-mx+1 from 0 to 5 is 11.3024. Find m. I know that this means that i need to find the integral of the absolute value of x^2-mx+1 from 0 to 5 and set it equal to 11.3024, but I am not sure where to go from there.
September 7, 2014

math
56.67 is correct?
September 3, 2014

math
Find each unit rate. Round to the nearest hundredth if necessary. 357 miles in 6.3 hours
September 3, 2014

math
Find each unit rate. Round to the nearest hundredth if necessary. 5 pounds for $ 2.49
September 2, 2014

math
What is the slope of the budget line from trading with Friday (coconuts for fish)?
August 24, 2014

calculus 2
use the simpsons rule with n=10, arc length y=^3sqaure root x, for 1<=x<6
July 29, 2014

calc 2
find the maclaurin series for: f(x) = (1-3x)^-5. What is the radius of convergence?
July 27, 2014

Physics (HEELPPP)
A coin with a diameter of 1.90 cm is dropped on edge onto a horizontal surface. The coin starts out with an initial angular speed of 14.4 rad/s and rolls in a straight line without slipping. If the rotation slows with an angular acceleration of magnitude 1.88 rad/s2, how far ...
June 27, 2014

chemistry
At a certain temperature, Keq is 4.13 x 10^-5 for the equilibrium: 2IBr(g) ↔ I2(g) + Br2(g) Assume that the equilibrium is established at the above temperature by adding only the reactant to the reaction flask. What are the concentrations of I2 and Br2 in equilibrium ...
June 5, 2014

Global history
Compare and contrast European colonization of the Americas in the 16th and 17th centuries with European colonization of Africa and Asia in the 18th and 19th centuries. Be sure to address the motives for colonization and the impact that colonization had on native peoples. (Just...
May 28, 2014

Math
I think your answer looks fine. We are doing this in my school as well. The question is rather open for personal opinion, so as long as you can back it up, it is fine. Sorry if this does not help
May 28, 2014

Physics
an electron is sitting 10cm away from a small object -5nc it is let go and moves away from the charged object when it reaches a distance of 15 cm away find its speed
May 26, 2014

geometry
if a cone is 7.5 cm high and has a vertical angle of 70 degree calculate the diameter of its base.
May 16, 2014

Logic
Even if you know only some of them please help! 1. Give a proof of the following: (∀F)( (P)( [ιxGx][Px] ⊃ F(P) ) ⊃ F(G)) (∃F)( (P)( F(P) ≡ [ιxGx][Px]) Therefore, E!(ιxGx) 2. Prove the following: [ιxMx][Thales believed that Bx...
May 14, 2014

Trigonometry
Two radar stations are 50 miles apart. Both are tracking the same plane. At this moment, the angle between station 1 and the plane is 73 degrees and the angle between station 2 and the plane is 46 degrees. How far is the plane from station 2?
May 6, 2014

physics
Sunlight strikes the surface of a lake at an angle of incidence of 44.5°. At what angle with respect to the normal would a fish see the Sun?
May 4, 2014

physics
How would a diamond look if there were no dispersion?
May 4, 2014

physics
Question Part Points Submissions Used 1 2 3 4 0/0.37 0/0.37 –/0.37 –/0.37 4/15 1/15 0/15 0/15 Total 0/1.48 ...A diamond in air is illuminated with white light. On one particular facet, the angle of incidence is 46.05°. Inside the diamond, red light (ë = 660...
May 4, 2014

physics
A diamond in air is illuminated with white light. On one particular facet, the angle of incidence is 46.05°. Inside the diamond, red light (ë = 660.00 nm in vacuum) is refracted at 17.38° with respect to the normal; blue light (ë = 470.00 nm in vacuum) is ...
May 4, 2014

physics
Sunlight strikes the surface of a lake at an angle of incidence of 44.5°. At what angle with respect to the normal would a fish see the Sun?
May 4, 2014

Economics
Based on the Nielsen ratings, the local CBS affiliate claims its 11 p.m. newscast reaches 41% of the viewing audience in the area. In a survey of 100 viewers, 36% indicated that they watch the late evening news on this local CBS station. What is the alternate hypothesis? H1...
April 27, 2014

Statistics
The claim that "38% of those persons who retired from an industrial job before the age of 60 would return to work if a suitable job was available," is to be investigated at the 0.02 level of risk. If 86 out of the 200 workers sampled said they would return to work, ...
April 27, 2014

Statistics
An accelerated life test on a large number of type-D alkaline batteries revealed that the mean life for a particular use before they failed is 19.0 hours. The distribution of the lives approximated a normal distribution. The standard deviation of the distribution was 1.2 hours...
April 11, 2014

Statistics
You take a trip by air that involves three independent flights. If there is an 67% chance each specific leg of the trip is on time, what is the probability all three flights arrive on time? (Round your answer to 3 decimal places.) Probability= ? My answer is 0.301 3 decimal ...
April 5, 2014

Statistics
A survey of top executives revealed that 37% of them regularly read Time magazine, 21% read Newsweek and 38% read U.S. News & World Report. Eleven percent read both Time and U.S. News & World Report. What is the probability that a particular top executive reads either Time or ...
April 4, 2014

Statistics
You take a trip by air that involves three independent flights. If there is an 67% chance each specific leg of the trip is on time, what is the probability all three flights arrive on time? (Round your answer to 3 decimal places.) Probability=
April 4, 2014

Statistics
A survey of top executives revealed that 37% of them regularly read Time magazine, 21% read Newsweek and 38% read U.S. News & World Report. Eleven percent read both Time and U.S. News & World Report. What is the probability that a particular top executive reads either Time or ...
April 4, 2014

Statistics
Thank you
April 4, 2014

Statistics
The National Center for Health Statistics reported that of every 894 deaths in recent years, 25 resulted from an automobile accident, 185 from cancer and 309 from heart disease. What is the probability that a particular death is due to an automobile accident? 25/309 or 0.081 ...
April 4, 2014

Chemistry
Complete ionic equation and net ionic equation for 2 K3PO4 + 3 Fe(NO3)2 --> 6 KNO3 + Fe3(PO4)2
March 26, 2014

Chemistry
CIE and NIE for 2 K3PO4 + 3 Fe(NO3)2 --> 6 KNO3 + Fe3(PO4)2
March 26, 2014

CHemistry
SO2(g) + H2O(l)= H2SO(l) What mass of sulfur dioxide is needed to prepare 36.86 g of H2SO3(l)
March 26, 2014

Chemistry
CIE and NIE for 2 K3PO4 + 3 Fe(NO3)2 = 6 KNO3 + Fe3(PO4)2
March 26, 2014

physics
How long will it take a watch dropped from a bridge (20.3 meters above the water) to hit the water?
March 26, 2014

grammar
Thank you Writeacher
March 18, 2014

grammar
In The Space Before Each of the Following items, place a C if the capitalization is correct, a zero (0) if it is incorrect. Then insert capitals where should be, and draw a line through capitals that should be small letters. 1.the Rocky Mountains i got C 2.my spanish course i ...
March 18, 2014

Calculus Check my answer
Find the area between the curves y= x^2/2 +2 and y = –x – 3 on the interval –4 ≤ x ≤ 4. I got 40/3 is that correct?
March 11, 2014

Calculas
Find the area of the region under the curve y = 12 e ^{3 x} between x = -2.6 to x =2.6
March 8, 2014

Calculas
The slope of the tangent line to the graph of a function, h(t) is 7/2t The function passes through the point (5,3) Find h(4)
March 2, 2014

IT
Write a program that asks for the name of the employee, an hourly pay rate and hours worked. Compute gross pay (hours X rate), withholding tax, and net pay (gross pay minus withholding tax). Withholding tax is computed as a percentage of gross pay based on the following: Gross...
February 23, 2014

physics
Drag-race tires in contact with an asphalt surface have a very high coefficient of static fric.tion. Assuming a constant acceleration and no slipping of tires, estimate the coefficient of static friction needed for a drag racer to cover 2.1 km in 8 s, starting from rest. ...
February 21, 2014

physics
A person stands on a bathroom scale on a motionless elevator. When the elevator begins to move, the scale briefly reads 200 percent of the person's regular weight. Calculate the acceleration of the elevator, a_{elevator}. Use SI units
February 21, 2014

Middle School Math Help Please
You have a glass of juice in front of you, and you drink 1/6 of it. Then you pour as much water into the glass as you drank of the juice. Your drink 1/3 of this mixture and again you pour as much water into the glass as you drank of the mixture. Now you drink 1/2 of the ...
February 19, 2014

calculas
Consider the function f(x) = 7 xe^{-7.5 x}, 0<_x<_2. This function has an absolute minimum value equal to: which is attained at x=
February 19, 2014

calculas
A landowner wants to fence in a rectangular area of 60000 square metres and divide it into three parts with two parallel fences both parallel to one side of the rectangle. Each part will have a different grazing crop for the herds. What is the shortest total length of fence ...
February 19, 2014

Physics
Your potato gun has a muzzle velocity of 34 m/s. You want to shoot a potato and have it strike the ground 2.4 seconds later. At what elevation do you have to fire the gun?
February 15, 2014

physics
thanks henry..... dont know why i didnt see that earlier
February 15, 2014

Health
10. Which of the following sentences should not be used in "I" messages? (Choose 2) A) You make me feel humiliated when you criticize me. B)It's hard for me to think clearly when you are singing. C)I would like us to leave on time in the future. D)I do not like ...
February 15, 2014

social studies
bill of rights which carefully listed and defined rights
February 12, 2014

Physics
An object moving along a horizontal track collides with and compresses a light spring (which obeys Hooke's Law) located at the end of the track. The spring constant is 38.6 N/m, the mass of the object 0.270 kg and the speed of the object is 1.20 m/s immediately before the ...
February 11, 2014

Physics
At a given temperature O2 molecules will move (3/2)1/2 faster than O3 molecules on the average. True or False? I'm not sure if it is true or false on this one, but I think its false. If you mix a gas, eventually all the molecules have the same kinetic energy on the average...
February 4, 2014

math
$120
February 4, 2014

Chemistry
At 1 atm, how much energy is required to heat 35.0 g of H2O(s) at –12.0 °C to H2O(g) at 127.0 °C?
February 2, 2014

CHemistry
At 1 atm, how much energy is required to heat 35.0 g of H2O(s) at –12.0 °C to H2O(g) at 127.0 °C?
February 2, 2014

Math
None especially from Steve!
January 26, 2014

Math
Suppose Meagan needs to drive the truck 10 miles to her new home. a) What is the cost of using Truck A? b) What is the cost of using Truck B? c) Which company offers the better deal at this mileage? 2. Suppose Meagan needs to dive the truck 30 miles to her new home. a) What is...
January 26, 2014

science check my answers?
A car travels around a circular turn of radius 50 meters while maintaining a constant speed of 15 m/s. Find the minimum value for the coefficient of friction necessary to keep the car on the road. I got .40 for the minimum value of friction. In icy conditions, the coefficient ...
January 11, 2014

business analytics
Ill be concise:60% of people in survey had income greater than 25k, 40% under 25k. Further, same survey, 70% have exactly 2 cars, while 30% have a different number than 2. The probability that the residents own 2 cars IF income is over 25k is 80%. what is the probability of a ...
December 9, 2013

Business Math and Statistics
Ill be concise:60% of people in survey had income greater than 25k, 40% under 25k. Further, same survey, 70% have exactly 2 cars, while 30% have a different number than 2. The probability that the residents own 2 cars IF income is over 25k is 80%. what is the probability of a ...
December 8, 2013

math
Lucy earns $326.87 each week. The federal government withholds 18% of that for federal income tax. How much is withheld from her pay annually for federal income tax?
November 26, 2013

Calculus
Find the point on the line -6 x + 5 y - 1 =0 which is closest to the point ( -4, 1 )
November 23, 2013

Calculus Help!!!
Find c > 0 such that the area of the region enclosed by the parabolas y=x^2-c^2 and y=c^2-x^2 is 13.
November 21, 2013

accounting
Harry and Sally were divorced three years ago. In July of the current year, their son, Joe, broke his arm falling out of a tree. Joe lives with Sally and Sally claims him as a dependent on her tax return. Harry paid for the medical expenses related to Joe’s injury. Can ...
November 18, 2013

Science
How many grams are in 3CuCl2
November 7, 2013

Science
How many grams are in 3CuCl2
November 7, 2013

physics
A thermal neutron beam of intensity 1 to the power 11, neutrons/sec is directed for 2 days into a cavity in a block of cobalt initially composed entirely of the stable isotope Cobalt 59. The neutrons are all captured, producing cobalt 60 nuclei which are radioactive with a ...
November 2, 2013

physics
A nuclear reactor for producing neutron beams is refuelled with about 10 kg of uranium, which contains initially 90% of the fissile isotope 235U. The reactor operates continuously at a constant thermal power of 57 MW until the quantity of 235U is reduced by 30%, at which point...
October 29, 2013

Physics
A nuclear reactor for producing neutron beams is refuelled with about 10 kg of uranium, which contains initially 90% of the fissile isotope 235U. The reactor operates continuously at a constant thermal power of 57 MW until the quantity of 235U is reduced by 30%, at which point...
October 28, 2013

Physics
A car is driving along at 16 m/s, and the rain is falling at 6 m/s straight down. What angle θ (in degrees) does the rain make with respect to the horizontal as observed by the driver?
October 27, 2013

Chemistry
MnO4 + (C2O4)2 = MnO2 + 2(CO3)2
October 27, 2013

Statistics
The weight of a bag of corn chips is normally distributed with a mean of 22 ounces and a standard deviation of 0.5 ounces. -The probability that a bag of corn chips weighs more than 21 ounces is? -The probability that a bag of corn chips weighs between 20.75 and 23.25 ounces is?
October 27, 2013

statistics
0
October 24, 2013

Physics
A cart of mass m1 = 12 kg slides down a frictionless ramp and is made to collide with a second cart of mass m2 = 21 kg, which then heads into a vertical loop of radius 0.26 m, but the carts stick together after the collision.Find the height h from which cart 1 would need to ...
October 13, 2013

Physics
A cart of mass m1 = 12 kg slides down a frictionless ramp and is made to collide with a second cart of mass m2 = 19 kg, which then heads into a vertical loop of radius 0.23 m. Determine the height h from which cart 1 would need to start to make sure that cart 2 completes the ...
October 13, 2013

Physics
A vintage sports car accelerates down a slope of θ = 16.6°. The driver notices that the strings of the fuzzy dice hanging from his rear-view mirror are perpendicular with respect to the roof of the car. What is the acceleration of the car?
October 13, 2013

Organic Chemistry
What reagents will separate, isolate, and purify 50% phenanthrene, 40% methyl 4-aminobenzoate, and 10% 1,4-dibromobenzene? The reagents to chose from are: 1 M naoh, 6 M naoh, 1 M hcl, 6 M hcl, 1 M nahco3, saturated sodium chloride, diethyl ether, 95% ethanol, methanol, ...
October 1, 2013

math
Did you mean: ryan has nine 14 ounce bags of popcorn to repackage and sell at the school fair. a small bag holds 3 ounces. how many small bags can he make?
September 18, 2013

physics
A jogger follows this route every morning. Assume each segment is a straight line. A= 1000m due south B= 500m at 53 degrees east of south C= 400m due east What is the jogger's displacement from start to end including magnitude and direction?
September 9, 2013

statistics
A machine is designed to fill jars with 16 ounces of coffee. A consumer suspects that the machine is not filling the jars completely. A sample of 8 jars has a mean of 15.6 ounces and a standard deviation of 0.3 ounce. Is there enough evidence to support the consumer's ...
August 2, 2013

eth/125
Thank you
July 21, 2013

eth/125
Which of the following types of people would be unlikey ro do much to change themselves? A. The fair wheather liberal b.the all wheather liberal c.the timid bigot d.all of these
July 21, 2013

Physics
A 170 kg astronaut (including space suit) acquires a speed of 2.75 m/s by pushing off with his legs from a 2400 kg space capsule. What is the average change in speed in meters/second of the space capsule?
July 12, 2013

Pages: 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | Next>>

Search
Members