Saturday

April 30, 2016
Total # Posts: 388

**Chemistry**

Calculate the partial pressure of helium in a 1.00 L flask that contains equal numbers of moles He, Ne, and Ar at a total pressure of 5.26atm
*April 10, 2012*

**chemistry**

Calculate the partial pressure of propane in a mixture that contains equal numbers of of moles of propane (C3H8) and butane (C4H10) at 20 degrees C and 844 mmHg. (R=0.082 L-atm/K mol)
*April 10, 2012*

**ALGEBRA**

Find three ordered pairs that satisfy the equation. y = 5 x - 4 (0, ), (1, ), (2, )
*April 10, 2012*

**ALGEBRA**

Assume f(x) = x2 + 3. Find the functional value requested. f(-7)
*April 10, 2012*

**algebra**

Find three ordered pairs that satisfy the equation. y = x + 2
*April 10, 2012*

**Trig.**

What is the trigonmetric fact for sin 3.14/8?
*April 5, 2012*

**Algebra II**

if y varies directly as x, if y=80 when x=32, find x if y=100
*March 22, 2012*

**math**

A student invests two sums of money at 3% and 4% interest, receiving a total of $110 in interest after 1 year. Twice as much money is invested at 4% than at 3%. Find the amount invested at each interest rate. Where do I even begin with this?
*March 13, 2012*

**Geometry**

An airplane rises vertically 1000 feet over a horizontal distance of 1 mile. What is the angle of elevation? 1 mile = 5,280 ft
*February 29, 2012*

**math - integers**

5. Robert, a real estate agent, drove 170 kms north from his home. The following day, he drove 54 kilometers south. How far and in what direction did he have to drive to get back home?
*February 7, 2012*

**math - integers**

4. The temperature is falling 3 degrees per hour. How many degrees has it fallen altogether from 12 noon to 12 midnight?
*February 7, 2012*

**math - integers**

3. Arlan and Bryan started driving from the same place. Arlan drove at an average speed of 55 kph, Bryan drove at an average speed of 65 kph. How far apart were the after 2 hours?
*February 7, 2012*

**math - integers**

2. One Saturday morning, Liza jogged 15 blocks from her house and then decided to go back 5 blocks by the same road. How many blocks away is she from her house?
*February 7, 2012*

**math - integers**

1. Freddy lives 34kms south of Makati City while Misael lives 34kms north of Makati City. How far is Freddy's place from Misael's place?
*February 7, 2012*

**math**

what is the length of a diagonal of a square whose side measures 6cm.?
*January 28, 2012*

**geometry**

if I want a ramp with a 30 foot length, and a 5 percent up grade starting at 0, how high will the tall end be?
*January 27, 2012*

**math**

what is the length of a diagonal of a square whose side measures 6cm.?
*January 27, 2012*

**math**

the absolute value of an integer is always greater than the integer. True or False?
*January 27, 2012*

**math**

what is the length of a diagonal of a square whose side measures 6cm.?
*January 27, 2012*

**geometry**

The altitude of an equilateral triangle is 7 square root 3 units long. The length of one side of the triangle is ____ units. 7 14 14 square root 3 7 square root 3 over 2
*January 17, 2012*

**geometry**

Ray OX bisects angle AOC and angle AOX =42 degrees, angle AOC is: 42 degrees 84 degrees 21 degrees 68 degrees
*January 17, 2012*

**math**

Ray OX bisects angle AOC and angle AOX =42 degrees, angle AOC is: 42 degrees 84 degrees 21 degrees 68 degrees
*January 16, 2012*

**geometry**

The altitude of an equilateral triangle is 7 square root 3 units long. The length of one side of the triangle is ____ units. 7 14 14 square root 3 7 square root 3 over 2
*January 16, 2012*

**math**

find the lateral area of a right prism whose altitude measures 20 cm and whose base is a square with a width 7 cm long.
*January 10, 2012*

**math**

a rectangle has a perimeter of 22cm and an area of 30 cubic meter. what are its dimensions?
*January 8, 2012*

**math**

2. the volume of a rectangular solid is 5376 cubic meters, and the base is 24 meters by 16 meters. find the height of the solid.
*January 8, 2012*

**math**

1. find the lateral area of a right prism whose altitude measures 20 cm and whose base is a square with a width 7 cm long.
*January 8, 2012*

**math **

the inner circumference of a ring is 1.2pi cm. the outer circumference of the ring is 2pi cm. find the area of the region bounded by the outer and inner circumference.
*January 8, 2012*

**math**

4. the area of a rectangle is 450 m^2. both the length and width of the rectangle are increased by 10%. what is the area of the new rectangle?
*January 8, 2012*

**math**

1. find the lateral area of a right prism whose altitude measures 20 cm and whose base is a square with a width 7 cm long. 2. the volume of a rectangular solid is 5376 cubic meters, and the base is 24 meters by 16 meters. find the height of the solid. 3. a rectangle has a ...
*January 7, 2012*

**math**

a square pyramid has an altitude measuring 5 cm and a side of its bases measuring 6 cm. find the lateral area of the pyramid.
*January 7, 2012*

**Calc **

Suppose 4y + xy = 2. Evaluate d^2x/d2^y at the point (-3, 2).
*December 28, 2011*

**ALGEBRA**

Suppose the modified quota is 8.57. Fill in the blanks, and round your answers to two decimal places.
*December 18, 2011*

**Chemistry**

:::F-N:-F::: -H
*November 21, 2011*

**physics**

A bat at rest sends out ultrasonic sound waves at 51.1 and receives them returned from an object moving directly away from it at 22.3 .
*November 16, 2011*

**Biology**

the biome with the fewest seasonal changes is?
*October 29, 2011*

**physics**

A jetliner can fly 5.57 hours on a full load of fuel. Without any wind it flies at a speed of 2.43 x 102 m/s. The plane is to make a round-trip by heading due west for a certain distance, turning around, and then heading due east for the return trip. During the entire flight, ...
*October 6, 2011*

**physics**

An airplane with a speed of 85.1 m/s is climbing upward at an angle of 54.4 ° with respect to the horizontal. When the plane's altitude is 759 m, the pilot releases a package. (a) Calculate the distance along the ground, measured from a point directly beneath the point...
*October 6, 2011*

**physics**

Relative to the ground, a car has a velocity of 14.4 m/s, directed due north. Relative to this car, a truck has a velocity of 24.8 m/s, directed 52.0° north of east. What is the magnitude of the truck's velocity relative to the ground?
*October 6, 2011*

**physics**

A ball is thrown upward at a speed v0 at an angle of 59.0¢ª above the horizontal. It reaches a maximum height of 8.7 m. How high would this ball go if it were thrown straight upward at speed v0?
*October 6, 2011*

**physics**

A golfer hits a shot to a green that is elevated 3.0 m above the point where the ball is struck. The ball leaves the club at a speed of 16.8 m/s at an angle of 30.0¢ª above the horizontal. It rises to its maximum height and then falls down to the green. Ignoring air ...
*October 6, 2011*

**math**

Help. I cannot solve this problem.\ 3(a+4)/9 = 2a - 12
*October 4, 2011*

**physics**

A speedboat starts from rest and accelerates at +1.68 m/s2 for 5.43 s. At the end of this time, the boat continues for an additional 8.16 s with an acceleration of +0.475 m/s2. Following this, the boat accelerates at -0.866 m/s2 for 7.54 s. (a) What is the velocity of the boat...
*October 3, 2011*

**physics**

An automobile starts from rest and accelerates to a final velocity in two stages along a straight road. Each stage occupies the same amount of time. In stage 1, the magnitude of the car's acceleration is 2.03 m/s2. The magnitude of the car's velocity at the end of ...
*October 3, 2011*

**physics**

In an historical movie, two knights on horseback start from rest 72.6 m apart and ride directly toward each other to do battle. Sir George's acceleration has a magnitude of 0.280 m/s2, while Sir Alfred's has a magnitude of 0.250 m/s2. Relative to Sir George's ...
*October 3, 2011*

**prealgebra**

IM stuck on a question. PLease help. A teacher is giving candy to his periods. First period gets 1/3 and 2nd period gets 1/4 and 3rd period gets 1/3 and finally 4th period gets 22 pieces. How many pieces did each period get? Im stuck!!
*August 31, 2011*

**prealgebra**

if 9% = 22 what is 100%?
*August 31, 2011*

**geometry**

In the equation y = 3x − 4, the __________.
*June 25, 2011*

**Trig**

The graph of y = 7cosx + 24sinx would be a sinusoid if it were plotted. What would be the first positive value of x at which there is a high point?
*June 17, 2011*

**life orientation**

critically discuss 5 ways in which the human or enrimental problem impacts on the community within south africa
*June 12, 2011*

**English**

What examples does Holden give about how mean the guys at Pency were treating him in chapter 22 of The Catcher in the Rye?
*May 26, 2011*

**algebra**

what is the slope of line that passes through (-3,-8) and (0,6)
*May 25, 2011*

**geometry**

Which of the following are measurements of the sides of a right triangle? Select one of the options below as your answer: A. 3, 4, 5 B. 28, 26, 12 C. 17, 14, 6 D. all of the above
*May 6, 2011*

**algebra please help!**

I need help understanding how to do these problems. Thanks! 1) Find the value(s) that would be left out of the range of f. If there is more than one value separate them by commas. Leave fractional answers in fraction form. If there are no values left out of the range respond ...
*May 3, 2011*

**physics**

Find the minimum kinetic energy needed for a 3.7×104-kg rocket to escape the Moon.
*April 28, 2011*

**physics**

Meteorites from Mars Several meteorites found in Antarctica are believed to have come from Mars, including the famous ALH84001 meteorite that some believe contains fossils of ancient life on Mars. Meteorites from Mars are thought to get to Earth by being blasted off the ...
*April 28, 2011*

**Math (Reflection across y=x line)**

Here's a question that I am having trouble with: What is the resulting equation when y=x^3+2x^2 is reflected across the y=x line? I know that I need to switch the y with the x's in the equation, so is the answer they're looking for simply x=y^3+2y^2 or do I need to...
*April 5, 2011*

**Rational Inequality with Absolute Value**

Thanks for you help. I would have expressed my answer in the way you suggested, but I wasn't sure how to type the infinity symbol. I will watch out for the glitch you mentioned. Thanks again, Randy
*March 26, 2011*

**Rational Inequality with Absolute Value**

Here's a question I'm having trouble with: |x|/|x+2|<2 Solve for x. I'm trying to use the case method to solve this problem. Basically I just need confirmation that I did this correctly. I'm doing this through distance learning so I can't ask a teacher ...
*March 26, 2011*

**Physics**

At an amusement park, a swimmer uses a water slide to enter the main pool. If the swimmer starts at rest, slides without friction, and descends through a vertical height of 2.41 m, what is her speed at the bottom of the slide?
*March 22, 2011*

**financial management**

You have been hired by first citizens bank as a financial analyst. One of your first assignments is to analyze the present financial condition of Bradley Stores, Incorporated. You are provided with the following 2009 balance sheet and income statement information for Bradley ...
*March 21, 2011*

**Physics**

When you push a 1.82-kg book resting on a tabletop, it takes 2.30 N to start the book sliding. Once it is sliding, however, it takes only 1.46 N to keep the book moving with constant speed. Q1. What is the coefficient of static friction between the book and the tabletop? Q2. ...
*March 7, 2011*

**physics**

Driving in your car with a constant speed of 12 m/s, you encounter a bump in the road that has a circular cross-section. If the radius of curvature of the bump is 35 m, find the apparent weight of a 63-kg person in your car as you pass over the top of the bump.
*March 6, 2011*

**physics**

When you take your 1000-kg car out for a spin, you go around a corner of radius 57 m with a speed of 11 m/s. The coefficient of static friction between the car and the road is 0.88. Assuming your car doesn't skid, what is the force exerted on it by static friction?
*March 6, 2011*

**physic**

5900
*March 6, 2011*

**physic**

A 120-kg box is loaded into the trunk of a car. If the height of the car's bumper decreases by 20 cm , what is the force constant of its rear suspension? looking for N/m
*March 6, 2011*

**Physics**

To move a large crate across a rough floor, you push on it with a force at an angle of 21 below the horizontal, as shown in the figure. Find the acceleration of the crate if the applied force is 400 , the mass of the crate is 32 and the coefficient of kinetic friction is 0.31.
*March 6, 2011*

**Math/Algabra**

The perimeter of a triangle is 102. side b is twice as long as side A. and side C is three less than side B.. how long is each side.
*February 13, 2011*

**math-logs**

1. logaB = 2 and logbC = 4, evaluate logcA *the lowercase letters are bases ie. log(base a)B 2. solve for x: (log(base 2)x))^3 = log(base 2)x
*February 13, 2011*

**Kinematics**

A car has an acceleration of 2 m/s2. What is its speed 3 seconds after it starts moving?
*February 1, 2011*

**Math**

What is the surface area of a right circular cylinder with base circle of radius of 5m and height of the cylinder 10m?
*January 18, 2011*

**Prove trig identity**

Thank you.
*January 9, 2011*

**Prove trig identity**

Sorry forgot the =1 on the end, ((sec^2)x-1)((csc^2)x-1)=1
*January 9, 2011*

**Prove trig identity**

secant squared... ((sec^2)x-1)((csc^2)x-1)
*January 9, 2011*

**Prove trig identity**

Prove the following trigonometric identity: (sec^2x-1)(csc^2x-1)=1
*January 9, 2011*

**PSY 202**

why is it important to considereach domain in the study of adult development?
*December 15, 2010*

**statistics**

A USU today survey found that of the gun owners surveyed 275 favor stricter gun laws. Test the claim that the majority (more than 50%) of gun owners favor stricter gun laws. Use a .05 significance level.
*December 7, 2010*

**chemistry HMWK help....... REPOST**

This is a stoiciometry question! You have the correct chemical equation already so: First calculate the number of moles of Pentane, than use stoiciometry to figure out the number of moles of CO2 produced and finally convert it to mass using the molar mass. Do you know how to ...
*November 11, 2010*

**PHYSICS !**

If i understand correctly, you mead that a the ball is in free fall after running off of the end of a ramp. That would mean that in the vertical direction the ball will accelerate (speed up) because of the force of gravity. In the horizontal direction it will have a constant ...
*November 11, 2010*

**math**

Are the beginign and end points of the race both at the intersection? or is the shop in the middle of the street?
*November 11, 2010*

**chemistry**

When I am writing a half-reaction with a corroding metal that is in Deaerated water, what can i assume there to be in the water that can show up in a half-reaction?
*November 11, 2010*

**chemistry**

When I am writing a half-reaction with a corroding metal that is in deionized water, what can i assume there to be in the water that can show up in a half-reaction?
*November 11, 2010*

**algebra**

the graph of the axis of symmettry of the parabola y=2x^2-11x+3 is best describe by which of the following equations?
*November 2, 2010*

**English**

I need a 450 word thesis about why buying a house is better than renting an apartment?
*October 30, 2010*

**chemistry**

How many moles of Cu are needed to react with 3.50 moles of AgNO3?
*October 30, 2010*

**physics**

A satellite orbits at an average altitude of h = 409 km. What is its orbital speed? Use REarth = 6370 km and mEarth = 5.98 x 10^24 kg
*October 25, 2010*

**chemistry**

thank you
*October 25, 2010*

**chemistry**

thank you :D
*October 25, 2010*

**chemistry**

Suppose that the microwave radiation has a wavelength of 10.8 cm. How many photons are required to heat 225 mL of coffee from 25.0*C to 62.0*C ? Assume that the coffee has the same density, 0.997 g/mL , and specific heat capacity, 4.184 J/(gK), as water over this temperature ...
*October 25, 2010*

**C programming**

A few questions, all involving "for" loops that I am unsure how to do (Thank you in advance for the help): Q1.) Write a table of conversions from Celsius to Rankin. Allow the user to enter the starting temperature and increment between lines. Print 25 lines in the ...
*October 18, 2010*

**Algebra**

What is the solution of -4x +1 > or equal to 7 I get these really confused on how to solve these. Thank you
*October 5, 2010*

**statistics**

Find z such that 20.3% of the standard normal curve lies to the right of z. 0.831 0.533 -0.533 -0.257 0.257
*September 26, 2010*

**Statistics**

How do frequency tables, relative frequencies, and histograms showing relative frequencies help us understand sampling distributions? A. They help us to measure or estimate of the likelihood of a certain statistic falling within the class bounds. B. They help us visualize the ...
*September 26, 2010*

**statistics**

Assume that about 45% of all U.S. adults try to pad their insurance claims. Suppose that you are the director of an insurance adjustment office. Your office has just received 110 insurance claims to be processed in the next few days. What is the probability that fewer than 45 ...
*September 26, 2010*

**physics**

A log is floating on swiftly moving water. A stone is dropped from rest from a 84-m-high bridge and lands on the log as it passes under the bridge. If the log moves with a constant speed of 3.6 m/s, what is the horizontal distance between the log and the bridge when the stone ...
*September 8, 2010*

**economics**

Explain how absolute advantage and comparative advantage differ?
*July 30, 2010*

**Economics**

Has the distribution of income in Canada become equal or more unequal?
*July 26, 2010*

**economics**

What is one of the major welfare challenges in Canada and how is it being tackled
*July 26, 2010*

**economics**

Why might it be appropriate for the government to allow a pharmaceutical company to have a monopoly in the production of a drug?
*July 20, 2010*

**geometry**

If an object is rotated clockwise 130° around a center and then counterclockwise 75° around the same center, what is the angle between the original image and second image?
*July 12, 2010*