Tuesday
December 6, 2016

# Posts by Justin

Total # Posts: 931

Math
a woman drives to work and averages 70 kilometers per hour for the trip. On her trip from work to home she averages 100 kilometers per hour. What is her average speed for the round trip?
July 15, 2015

Algebra
Problem solving (point of intersection) You are considering changing your cell phone plan . Company A offered a flat fee of \$40 plus 10cents for each additional min of use. Company B offers a monthly flat fee of \$20 plus 15 cents for each additional min of use. What plan would...
July 13, 2015

Problem solving (point of intersection)
You are considering changing your cell phone plan . Company A offered a flat fee of \$40 plus 10cents for each additional min of use. Company B offers a monthly flat fee of \$20 plus 15 cents for each additional min of use. What plan would you choose? Equation : y=. x+ Equation...
July 13, 2015

Problem solving (point of intersection)
Alpine Valley charges \$10/hr for lessons and \$40 for the lift ticket and snowboard rental. Chicopee Hills charges \$20/hr which includes lessons, lift ticket and rentals. Which resort would you choose? Equation A: y=. X+ Equation B: y=. X+ Decide on a reasonable starting point ...
July 13, 2015

statistics
A simple random sample of 1350 registered voters shows that 58% favor Candidate A over Candidate B. Construct a 99% confidence interval for the percent of the population of all registered voters who prefer Candidate A over Candidate B.
May 13, 2015

trig
Find the values of sin 0, cos 0, and tan 0ƒáif the angle 0ƒáis in standard position and its terminal side passes through the point (¡V15, 8). Give answers as fractions.
May 3, 2015

physical science
What is the amplitude of a longitudinal wave
April 6, 2015

M ath
Thank you, Yes I can do B from here.
April 3, 2015

M ath
Sally has a sum of \$26000 that she invests at 9% compounded monthly. What equal monthly payments can she receive over a period of a) 9 years? b) 7 years?
April 3, 2015

english
Using a single formatting _____ helps to make reading researched information easier;it lets the reader know what to expect.  A. Citation  B. Text  C. Style  D. Website  My answer was b it was wrong so I'm thinking the answer is c
March 23, 2015

English
To use another's ideas in your own words is to ___ those ideas. A. Paraphrase B. establish C. Manifest D. Refute My answer was b I got it wrong so would the answer be A
March 23, 2015

English
March 23, 2015

English
Which of the following would most likely be an entry in a sentence outline? A. Education tool B. Education can change a person's life C. Education as a pathway D. Education beyond high school versus education beyond college My answer was D I got it wrong Would it be a
March 23, 2015

Physics
A body of mass m is suspended from a spring with spring constant k and the spring is stretched 0.1. If two identical bodies of mass m/2 are suspended from a spring with the same spring constant k, how much will the spring stretch? Explain your answer. The first case is when ...
March 12, 2015

physics for physical science
A stone thrown vertically upwards with a speed of 12m/s from the edge of Cliff 70m high. Calculate the time the stone takes to hit the bottom of the cliff.
March 9, 2015

algebra
The sum of two numbers is 70. One number is 10 more than twice the other number. Using Elimination find the numbers.
February 26, 2015

Physics
Two men of the same mass climb the same flight of stairs. The first man climbs the stairs for 25 seconds, while the seconds person takes 35 seconds. Which man does the most work?
February 26, 2015

English
Five sentence paragraph. To make a perfect turkey sandwich you will need, butter knife, turkey, cheese,mayo, lettuce, tomato and two slices of bread. Next, place the mayo evenly on both side of the bread. On one slice of the bread place the cheese,turkey,lettuce,and tomato. ...
February 21, 2015

Physics
A bike and cyclist have a combined mass of 75 kg. If the brakes can apply a maximum force of 20 N, what is the shortest time in which the cyclist can stop?
February 10, 2015

IPC
A hailstone traveling with a velocity of 43 meters/second comes to a virtual stop 0.28 seconds after hitting water. What is the magnitude of its acceleration in the water? a. 12 meters/second2 b. 1.5 × 102 meters/second2 c. 78.6 meters/second2 d. 6.5 × 10-3 meters/...
February 6, 2015

maths
-2(2x-5)(3x+1)
February 2, 2015

math
68/21
January 27, 2015

math
what is the total cost for 4 1/10 pounds of vanilla pudding? vanilla pudding=\$7/lb
January 14, 2015

physics
The small piston of a hydraulic lift has a cross-sectional area of 3.6 cm2 and the large piston has an area of 86 cm2. What force F must be applied to the small piston to maintain the load of 52 kN at a constant elevation?
January 4, 2015

Math
You own 80 mp3s. You plan to add 10 more songs every month. Represent this relationship to show how many mp3s you have for th nxt six months. What is the independent x varible?
December 10, 2014

Astronomy
A simple temperature model for the solar nebula disk is ￼Tdisk(a) = 20 � SQRT 100 AU/ a K, (1) where a should be expressed in AU in this equation. ￼(a) Find the temperature in the solar nebula disk at the orbit of Mer- cury, Earth and Jupiter. (b) Where is...
November 13, 2014

Science Physics
How many Btu of heat must be added to 1200 lb of copper to raise its temperature from 100°F to 450°F -specific heat for copper is 0.092-
November 4, 2014

Specific Heat
Forgot to add specific heat for copper is 0.092
November 3, 2014

Specific Heat
How many Btu of heat must be added to 1200 lb of copper to raise its temperature from 100°F to 450°F
November 3, 2014

Science Physics
How many Btu of heat must be added to 1200 lb of copper to raise its temperature from 100°F to 450°F
November 3, 2014

Physics (heat)
A coal sample yields 1.25 X 10^4 Btu/lb. How many foot-pounds of work result from burning 1.00 ton of this coal?
November 3, 2014

Science Physics
600/9800
November 3, 2014

Science Physics
A lifeguard swims with her head just above the water. What is the volume of the submerged part of her body if she weighs 600 N? Would I need to divide by 9800 or 62.4?
November 3, 2014

Science Physics
A flat-bottom river barge is 30.0 ft wide, 85.0 ft long, and 15.0 ft deep. (a) How many ft3 of water will it displace while the top stays 3.00 ft above the water? (b) What load in tons will the barge contain under these conditions if the empty barge weighs 160 tons in dry dock?
October 31, 2014

physics
Bob, who has a mass of 80kg , can throw a 550g rock with a speed of 27m/s . The distance through which his hand moves as he accelerates the rock forward from rest until he releases it is 1.0 m. What constant force must Bob exert on the rock to throw it with this speed? If Bob ...
October 30, 2014

Fluid Mechanics Physics
A flat-bottom river barge is 30.0 ft wide, 85.0 ft long, and 15.0 ft deep. (a) How many ft3 of water will it displace while the top stays 3.00 ft above the water? (b) What load in tons will the barge contain under these conditions if the empty barge weighs 160 tons in dry dock?
October 29, 2014

Hydraulic Physics
thank you
October 29, 2014

Hydraulic Physics
So it would be 50.0/25.0*20.0=40
October 29, 2014

Hydraulic Physics
In a hydraulic system a 20.0-N force is applied to the small piston with cross sectional area 25.0 cm2. What weight can be lifted by the large piston with cross sectional area 50.0 cm2? Would I need to divide both pistons areas then mutiply the force? and or have gravity in ...
October 29, 2014

Fluid Mechanics
A flat-bottom river barge is 30.0 ft wide, 85.0 ft long, and 15.0 ft deep. (a) How many ft3 of water will it displace while the top stays 3.00 ft above the water? (b) What load in tons will the barge contain under these conditions if the empty barge weighs 160 tons in dry dock?
October 29, 2014

Fluid Mechanics
In a hydraulic system a 20.0-N force is applied to the small piston with cross sectional area 25.0 cm2. What weight can be lifted by the large piston with cross sectional area 50.0 cm2?
October 29, 2014

MATH (PROBABILITY)
According to Nielsen Media Research, approximately 52% of all U.S. households have digital cable television. In addition, 84% of all U.S. households have multiple TV sets. Suppose 45% of all U.S. households have digital cable television and have multiple TV sets. A U.S. ...
October 10, 2014

Chem 30 Thermodynamics
Your friend comes across a good deal to purchase a gold ring. She asks you for advice for you to test the ring. The ring has a mass of 4.54 g. When you heat the ring with 94.8 J of energy, its temperature rises from 23.0 degrees celsius to 47.5 degrees celsius. Would you ...
October 9, 2014

physics
Suppose that 1100 j of work is done by the force 30 n in moving the suitcase a distance of 50 m. At what angle is the force oriented with respect to the ground?
October 8, 2014

Physics (Force)
A power wheelbarrow has a mass of 432 kg. What force must be applied to give it an acceleration of 1.75 m/s2?
September 30, 2014

FRACTION CONCEPTS
I am a fraction whose numerator and denominator are both prime numbers less than 20. if you were to increase each term by 1, I would be equivalent to 1/2. what fraction am I?
September 23, 2014

Physics
A relativistic proton has a momentum of 1.0×10^-17 kg ∙ m/s and a rest energy of 0.15 nJ. What is the kinetic energy of this proton? (c = 3.00 × 108 m/s, mass of proton = 1.67 × 10-27 kg)
September 20, 2014

Physics
Assume that a certain city consumes electrical energy at an average rate of 2.0× 10^9 W. What would be the mass change in producing enough energy to keep this city running for 21 weeks?
September 20, 2014

math/stats
What is the standard deviation of a \$1 bet on any one particular number, e.g., 33, in the game of American roulette? Notice the payoff is 35:1 for this type of bet.
September 2, 2014

statistics
What is the standard deviation of a \$1 bet on any one particular number, e.g., 33, in the game of American roulette? Notice the payoff is 35:1 for this type of bet.
September 2, 2014

history
Buffalo
August 14, 2014

physics
how long does it take an car travailing in the left lane of a highway at 60km/h to overtake another car in the right lane traveling at 40km/hr when the cars start 100meters apart
July 27, 2014

geometry
one side of a parallelogram has endpoints (2,1) and (3,5) The endpoints for the opposite side are (5,2) and (6,6) true or false
July 16, 2014

Biology
can you please help me with number 19. the question is The function of the magnified structure shown in the image below is ___________ exchange.
May 22, 2014

AP chemistry
42.1 degrees celsius
May 20, 2014

Math
Ms. Sue forgot to grasp the concept of this being algebra not 1st grade math. I'll save you the time. It's 3.43.
May 8, 2014

geography
what is the value of igneous rocks to humankind?
April 21, 2014

math
The garage you work for as an auto mechanic measures 230 ft. by 150 ft and handles 69 cars. Using the existing garage as a model, how much space would you plan to have in your garage?
April 19, 2014

math
You require space to service 65 vehicles at any one time. Will a facility measuring 145 ft. by 130 ft. be adequate if each vehicle requires 300 sq.ft.?
April 15, 2014

math
Hal Fritz purchased a \$5,000 bond at 95. The annual interest is 6%.What was the cost of the bond? What was the annual interest? What is the yield (to nearest tenth of a percent)? please help
April 12, 2014

Chemistry
Are my answers correct? Identify each energy exchange as primarily heat or work and determine weather the sign of ?E is positive or negative for the system. A. A rolling billiard ball collides with another billiard ball. The first ball (system) stops rolling after the ...
April 9, 2014

math
Thanks :)
April 8, 2014

math
So it's 40%?
April 8, 2014

math
What % of \$3.75 is \$1.50?
April 8, 2014

math
Brendan got 31 questions correct on his social studies test and missed 9 questions. What percent did he have correct?
April 8, 2014

math
If Sue worked 6 3/4 hours on Monday, 4 hours on Tuesday, 7 3/4 hours on Wednesday, 8 hours on Thursday, and 5 1/2 hours on Friday, calculate her weekly wage at \$7.20 per hour.
April 8, 2014

math
Frank owns 300 acres of land. If he divides the land into 1/2 acre plots, how many plots will he have?
April 8, 2014

chemistry
Are my answers correct? Identify each energy exchange as primarily heat or work and determine weather the sign of ΔE is positive or negative for the system. A. A rolling billiard ball collides with another billiard ball. The first ball (system) stops rolling after the ...
April 8, 2014

chemistry
Are my answers correct? Identify each energy exchange as primarily heat or work and determine weather the sign of ΔE is positive or negative for the system. A. A rolling billiard ball collides with another billiard ball. The first ball (system) stops rolling after the ...
April 8, 2014

math
.An angle is 10° more than the measure of its complement. Find the number of degrees in each angle.The angles measure _ degrees.
April 6, 2014

math
An alloy of copper is 10% copper and weighs 25 pounds. A second alloy is 18% copper. How much (to the nearest tenth lb.) of the second alloy must be added to the first alloy to get a 13% mixture.
April 6, 2014

math
Two angles are complementary. One contains 30° more than the other. Find both angles. The measures of the angles are _ degrees
April 5, 2014

math
If the angle of declination is known, a surveyor would use_______ to find the length x. The cosine of a 50° angle is_______ this represents the value created when length x is divided by 90 feet. If the angle of declination changed to 60°, the cosine would be 0.5; now ...
April 5, 2014

math
The Smiths want to buy a 9 ft. by 12 ft. carpet and center it in a 15 ft. by 20 ft. room. Can a 3 1/2 foot by 12 foot couch be placed against one of the long walls of the room without touching the carpet?
April 4, 2014

Chemistry
please help me balance these equations using the method of half reactions.. Na + HCL = NaCl + H2 Pb + PbO2 + H2SO4 = PbSO4 +H2O Thank you, even a little help is appreciated.
April 2, 2014

Biology
Exogenous treatment with the plant hormone, ABA or auxin, induces enhanced susceptibility against biotrophic pathogens. Design an experiment that can reveal whether these hormones use the same signalling pathway or independent pathways to induce susceptibility.
March 21, 2014

English
In "Paul's Case," members of the faculty don't like Paul's carnation because they think A. it doesn't match his other clothing. B. it suggests that he's not taking things seriously. C. it's the mark of an early death. D. it's effeminate ...
February 26, 2014

physics
A)A model rocket is launched straight upward with an initial speed of 47.7 m/s. It accelerates with a constant upward acceleration of 2.02 m/s2 until its engines stop at an altitude of 157 m. What is the maximum height reached by the rocket? B)How long after lift off does the ...
January 25, 2014

economics
you find out that your aunt works for a defense manufacturing company that has several defense contracts with the government. she tells you that she works for a team that is producing a communications satelluite
January 21, 2014

Math
Thank you
January 16, 2014

Math
Find four ratios equivalent to 30%
January 16, 2014

world history
What was the goal of Americanization programs in settlement houses?
January 14, 2014

Lang Arts
A Retrieved Reformation By: O. Henry
January 10, 2014

Lang Arts
2. What do you learn about Ben price's character from his actions at the end of they story a. He is a determined man who will stop at nothing to catch Jimmy b. He is a forgiving man who is willing to let jimmy go c. He is a jealous man who wants Annabel for himself d. He ...
January 10, 2014

math
find the area under the normal distribution curve to the right of z = -2.40
December 7, 2013

math
find the area under the normal distribution curve between z = -1.25 and z = 2.20
December 7, 2013

Stats
If a student's rank in a class of 300 students is 111, find the student's percentile rank
December 7, 2013

Physics
A 153 g bullet is fired from a rifle having a barrel 0.794 m long. Assuming the origin is placed where the bullet begins to move, the force exerted on the bullet by the expanding gas is F = a + bx − cx^2 , where a = 12600 N, b = 8420 N/m, c = 10100 N/m^2, with x in ...
November 18, 2013

Physics
I figured it out. The answer is 10973.29 J. You just jsd2272 your x values mixed up. Thanks for the equation though. :)
November 15, 2013

Physics
November 15, 2013

Physics
So f = (9.8)(153) and d=.794? And then do I solve for x? How would I solve for x? ( never taken calculus)
November 15, 2013

Physics
A 153 g bullet is fired from a rifle having a barrel 0 . 794 m long. Assuming the origin is placed where the bullet begins to move, the force exerted on the bullet by the expanding gas is F = a + bx − cx 2 , where a = 12600 N, b = 8420 N / m, c = 10100 N / m 2 , with x ...
November 15, 2013

Stats
According to a Louis Harris poll, 63% of male drivers always use seat belts. A recent sample of 900 male drivers showed that 60% of them always use seat belts. Test at the 0.01 lovel of significance if the proportion of male drivers who always use seat belts is less than .63.
November 14, 2013

Phyics
One of the concrete pillars that supports a house is 1.9 m tall and has a radius of 0.55 m. The density of concrete is about 2.2 x 103 kg/m3. Find the weight of this pillar in pounds (1 N = 0.2248 lb).
November 12, 2013

science
1 what would cause a plant to have a shorter day. 2 what would cause a plant to have a longer day
October 20, 2013

1. Pages:
2. <<Prev
3. 1
4. 2
5. 3
6. 4
7. 5
8. 6
9. 7
10. 8
11. 9
12. 10
13. Next>>