Saturday

February 6, 2016
Total # Posts: 2,417

**physics**

A ball is tossed from an upper-story window of a building. The ball is given an initial velocity of 7.50 m/s at an angle of 18.0° below the horizontal. It strikes the ground 5.00 s later. (a) How far horizontally from the base of the building does the ball strike the ...
*February 5, 2016*

**Math**

Thank you so much :)
*February 2, 2016*

**Math **

Impulses in nerve fibers travel at a speed of 293 ft./sec . the distance D traveled in T seconds is given by D =293t . how long would it take an impulse to travel from the brain to the toes of a person who is 6 feet tall? My answer: 6ft=293t 6/293=0.020477 seconds?
*February 2, 2016*

**math**

Your math test has 38 questions and is worth 200. points. The test consist of multiple choice questions worth 4 points each and open ended questions worth 20 points each. How many of each type of question are there?
*February 2, 2016*

**Math **

During a sale at a store, you buy 3 sweatshirts and two pairs of sweatpants for 85.50. Later you buy 3 more sweatshirts and 4 more pairs of sweatpants for 123.00. WHat is the sale price of each sweatshirt and each pair of sweatpants? How did you get the answer what formula
*February 2, 2016*

**Math**

A student bought 3 boxes of pencils and 2 boxes of pens for $6. He then bought 2 boxes of pencils and 4 boxes of pens for $8. Find the cost of each box of pencils and each box of pens.
*February 2, 2016*

**Introductory algebra**

1/11-(-4/11) add or subtract as indicated
*February 1, 2016*

**physics**

A tourist being chased by an angry bear is running in a straight line toward his car at a speed of 3.55 m/s. The car is a distance d away. The bear is 17.1 m behind the tourist and running at 4.84 m/s. The tourist reaches the car safely. What is the maximum possible value for d?
*January 31, 2016*

**MATH**

Well. This just stinks.
*January 28, 2016*

**MATH**

Sorry, these were the right answers. :/
*January 28, 2016*

**MATH**

1. Which is equivalent to this expression? 9 – 5(4 – 2) / 3 + 5 A. -13/8 B. -1/8 C. 1 *** D. 7/4 2. There are 2 linen closets and 3 walk-in closets in each apartment in a building. The total number of closets in the building can be represented by 2n + 3n, where n ...
*January 28, 2016*

**Math**

Find ∑(j=12 up to 99) of 2j+1/(((j+1)^2)j^2)
*January 14, 2016*

**Physics**

If a 1350 kg minivan hits a barrier with a force of 2500 n and stops in 2.8 sec, how fast must the minivan have been traveling?
*January 13, 2016*

**math**

In right triangle ABC,BC=8cm and AC=17cm.Find the value of sin C
*January 13, 2016*

**math**

what is the dimension of 100 ft diagonal?
*January 12, 2016*

**Math**

There is a box and inside it is a bunch of hats. 1/6 of the hats are red, 1/3 of the hats are blue. 3/7 of the remainder are green. There are 27 green hats. How many hats are there in total?
*January 7, 2016*

**Math**

The telephone company wants to know how many different phone numbers are available for one area code. the only restrictions are on the prefixes, you can't start with a zero and you can't use 411, 611, 811, 911, or 555. how many different phone numbers are available?
*January 6, 2016*

**grammar**

ask not what your country can do for you but ask what you can do for your country,said john f.kennedy. tell me how to change this sentence in indirect speech
*January 6, 2016*

**Geometry**

If congruent side FH is a median of△EFG,find the perimeter of △EFG
*December 20, 2015*

**math**

Michael spends three hours cleaning his house you spend equal amount of time cleaning each room you spend a half an hour cleaning its room how many rooms does he have left 3/1 ÷1/2= 3/1× 2/1 =6/1 =6
*December 15, 2015*

**math**

the total surface of a cube that is y inches on each side.what is the algevraic expression
*December 9, 2015*

**Math please help**

So is my equation correct?
*December 7, 2015*

**Math please help**

A cos wave has its first maximum at the point (pie/2, 2) and its first minimum at (5pie/2, -4) what is the equation of the function? I remember writing 3cos(1/2(x-pie/2)-1 but I'm sure that it's wrong ?
*December 7, 2015*

**Math trigonometry**

A cos wave has its first maximum at the point (pie/2, 2) and its first minimum at (5pie/2, -4) what is the equation of the function? I remember writing 3cos(1/2(x-pie/2)-1 but I'm sure that it's wrong ?
*December 7, 2015*

**Math**

A cos wave has its first maximum at the point (pie/2, 2) and its first minimum at (5pie/2, -4) what is the equation of the function? I remember writing 3cos(1/2(x-pie/2)-1 but I'm sure that it's wrong ?
*December 7, 2015*

**Math**

Determine the angles if sin= -1/2 My answers were 11pie/6 and 4pie/3 ?
*December 3, 2015*

**physics**

What thickness of Pyrex glass would have the same R−factor as a 1.0−cm thick stagnant air pocket?
*December 2, 2015*

**Chemistry**

12.903
*November 27, 2015*

**Chemistry**

and NH4H2PO4 thanks DrBob22
*November 25, 2015*

**Chemistry**

Write the formulas of the compounds formed by NH4+ with the following anions: CN-, ClO3-, SO42-, H2PO4-
*November 25, 2015*

**physics**

Calculate the Specific Gravity of an object that sinks in water if m = 21.97 g and mA = 17.40 g.
*November 23, 2015*

**phyics**

Calculate the specific gravity of a liquid given the following information: m = 59.30 g, mA = 33.78 g, mL = 43.60 g.
*November 23, 2015*

**Pre-calculus**

Initially 600 milligrams of a radioactive substance was present. After 7 hours the mass had decreased by 3%. Construct an exponential model A(t) = A0ekt for the amount remaining of the decaying substance after t hours. Find the amount remaining after 24 hours.
*November 23, 2015*

**Statistics **

The ratio of brown M&M’s in a bag is stated by the candy company to be 56%. If a random sample of 500 bags is selected, determine the probability that the sample proportion of random bags of M&M’s selected has a percentage of brown between 51% and 59% p=.56 standard ...
*November 23, 2015*

**Chem**

The solubility of calcium sulfate is1.90g of caso4 per liter of aquences solution at 25c. The formula weight of caso4 is 136.11 calculate the solubility product of caso4.
*November 17, 2015*

**physics**

If a standing wave with 10 antinodes occurs at a frequency of 44.1 Hz, at what frequency would you look for the n = 2 standing wave?
*November 16, 2015*

**physics**

If a standing wave with 10 antinodes occurs at a frequency of 44.1 Hz, at what frequency would you look for the n = 2 standing
*November 16, 2015*

**physics**

You take a set of measurements for the wavelengths and frequencies of standing waves on a string that is under a tension of 2.20 N. You use your data to create a plot of wavelength (in m) vs inverse frequency (in s) and the linear fit of your graph gives a slope of 19.0. What ...
*November 16, 2015*

**mATH**

Mr. Adams said that 10 more than 7 times his age is 9 years fewer than 5 times his age with the digits reversed. How old is Mr. Adams?
*November 11, 2015*

**Math**

If a triangl if a triangle triangle has a perimeter of three units with a row of two connecting triangles the parameters for units what is the perimeter of a row of Tronic 20 triangles triangles
*November 10, 2015*

**math**

moniques family was very impressed with their waitress. the cost of their dinner was $85. They want to leave 20% tip. how much should they leave?
*November 9, 2015*

**algebra 1**

rene needs to determine the equation of a line passing through the point (-1,7) that is parallel to y=-3x-4 a. y=-3x+7 b. y=-3x+4 c. y=3x-7 d. y=3x-4
*November 9, 2015*

**Math**

So it is the 2 that is in the thousandths place. To Ms. Sue
*November 5, 2015*

**Math **

Sorry the number is 0.8923 which digit is in the thousandths place? I believe it is the 8 but the 0 is throwing me off
*November 5, 2015*

**Math**

Which digit is in the thousandths place am confused by the 0 but I believe the 8 is in the thousandths place.
*November 5, 2015*

**Math**

was working it to fast forty-nine
*November 5, 2015*

**Math**

I have to write this number in word form 1,358,049? Is it One million, three hundred fifty-eight thousand, forty-five
*November 5, 2015*

**math**

At a school there are 704 chairs to place into 22 classes if the same number of chairs are placed in each class rooms how many chairs will be in each room? So I divided 704 by 22 and came up with 32 chairs and I correct.
*November 3, 2015*

**math**

Thank you Ms. Sue
*November 3, 2015*

**math**

3,537,000
*November 3, 2015*

**math**

3,537
*November 3, 2015*

**math**

The total land area for the United States is 3537438.98 square miles what is the value rounded to the nearest thousand square miles?
*November 3, 2015*

**physics**

To leave Nicholson, you exit via the door to the quad. The door is 40 inches wide and has a mass of 200 kg. You push the door with a perpendicular force of 52.61N exactly 0.86m away from the hinge. This generates the minimum torque, \tau_1, required to open the door. If you ...
*November 2, 2015*

**phyics**

a 1350 g projectile is launched with a force of 150N. the length f the firing arm is 1.25 m . determine the velocity
*October 27, 2015*

**algebra**

The mass of jupiter is about 1.900*10^24 metric tons.The mass of the sun is about 1.998*10^27 metric tons.about how many times the mass of jupiter is the mass of the sun?give answer in scientific notation.
*October 25, 2015*

**math**

two trains are at stations that are 800 miles apart. if they start traveling toward each other at the same time one averaging 67 mph and the other averaging 53 mph in how many hours will they pass each other?
*October 22, 2015*

**Math**

Write and graph an inequality for the daily number of calories that are recommended for a sedentary male. The graph shows Sedentary as: no more than 2200 calories.
*October 22, 2015*

**English**

That's another example in a different sentence in my essay. I already changed it , I need something to replace "doing lots"
*October 19, 2015*

**English**

Colloquial **
*October 19, 2015*

**English**

She doesn't want me to use that. For example she also said I had to change the word "handle " since it was colloquy a and I changed it to manage.
*October 19, 2015*

**English**

He is capable of doing lots with his physical ability but relies on the support of George in his life.
*October 19, 2015*

**English **

In my essay I wrote "doing lots" in a sentence and my teacher wrote me back feedback saying it was colloquial , how can I correct /change this and what can I use instead? Thanks :)
*October 19, 2015*

**Social Studies**

c. The Philippines Islands
*October 16, 2015*

**History**

Do some types of speech deserve more constitutional protection than others? If so, describe one (1) type that deserves the most protection and one (1) type that deserves the least.
*October 16, 2015*

**physics**

A person pushes a 16.5-kg shopping cart at a constant velocity for a distance of 36.6 m on a flat horizontal surface. She pushes in a direction 27.9 ° below the horizontal. A 48.1-N frictional force opposes the motion of the cart. (a) What is the magnitude of the force ...
*October 13, 2015*

**math**

Maria needed 5 gallons of gas to fill her car's gas tank. The mileage odometer read 34,300 miles. When the odometer read 34,528 Maria filled the tank with 12 gallons. At the end of the trip, she filled the tank with 17 gallons, and the odometer read 34,868 ...
*October 8, 2015*

**algebra**

please help!!
*October 8, 2015*

**algebra**

How would you convert the repeating nondeterminating decimal into a fraction? 0.151515...
*October 8, 2015*

**Math**

An executive committee consists of 11 members: 5 men and 6 women. 3 members are selected at random to attend a meeting in Hawaii. The names are drawn from a hat. What is the probability that all 3 selected are women? Thanks for the help
*October 8, 2015*

**Math**

Suppose you draw a card from an ordinary deck of playing cards What are the odds in favor of drawing a face card? b. What are the odds against drawing a face card?
*October 7, 2015*

**Chemistry**

How many moles of chloride ions are in 100mL of a 0.3molar solution of AlCl3? #moles Cl =(.3M AlCl3)(.1L)(105g/mol / 132g/m0l)
*October 6, 2015*

**Chemistry**

A 453 mL solution has a chloride concentration of 0.0253 M. This solution was prepared by adding solid FeCl3 to water. How many grams of FeCl3 are required?
*October 5, 2015*

**Math**

109-x=96 cannot figure out why 13 keeps coming up as the answer. Seems like you should be adding 109 to both sides; any help?
*October 1, 2015*

**Math**

1.8 divided into 5.0 is what answer? My answer is 2.7 with 7 continuing or with a remainder of 14
*September 30, 2015*

**Grade 12 Math **

At a certain marathon race, the winner comes in at a time of 130 minutes. Second place comes in at a time of 135 minutes, and third place comes in at 140 minutes. Starting with third place, contestants come in at regular intervals all the way up to the last successful finisher...
*September 29, 2015*

**Math**

Julio is making a bookcase with 5 shelves. Each shelf is to be 3/4 yard long. How much wood does Julio need for the shelves?
*September 29, 2015*

**Math **

At a certain marathon race, the winner comes in at a time of 130 minutes. Second place comes in at a time of 135 minutes, and third place comes in at 140 minutes. Starting with third place, contestants come in at regular intervals all the way up to the last successful finisher...
*September 29, 2015*

**Math**

PLEASE HELP ASAP!!! 1 rectangular prism has a base area of 120 square feet, a height of 12 feet per second and has dimensions of 84 inches, 6 feet, and 16 feet. Is the volume of the second more than or less than half that of the first? now explain
*September 27, 2015*

**physics - engine**

A car V8 has a bore of 4 in. and a stroke of 2.5 in., what is the engine size?
*September 26, 2015*

**history**

Andre was correct just took the test got 100% Thanks Andre!
*September 21, 2015*

**physics**

An elephant walks east for a distance of 58 km, then walks north for a distance of 16 km and finally north east at 300 for 15 km. Find the magnitude of the elephant’s total displacement in kilometers. now would i find the change in distance by subtracting numbers and the ...
*September 17, 2015*

**MATH**

GIVE ME AN EXAMPLE OF A MULTI-STEP NUMBER SENTENCE THAT INCLUDES EXPONENTS (THAT WOULD INVOLVE ORDER OF OPERATIONS AND INCLUDE AT LEAST THREE NUMBERS).
*September 13, 2015*

**history**

2 is c I took the test
*September 11, 2015*

**Physics ( using earth to find pressure of planet y**

3. A model of Earth’s interior: Look up the radius and mass of the Earth. Radius is 6,371 km Mass is 5.974 x 10^24 kg Calculate its average density. p_e = (5.974 x 10^24 kg)/ (4/3)pi r^3 = (5.974 x 10^24 kg)/ (4/3)pi (6371)^3 = 5.54 g/cm^3 Imagine a planet of the same ...
*September 10, 2015*

**physics**

A car moving at 120 km/h is 100 km behind a truck travelling at 80 km/h in the same direction. How many km does the car travel before it overtakes the truck?
*September 3, 2015*

**biochem**

The pKa of butanoic acid is 4.87. A student mixes 120 mL of 0.45 M butanoic acid with 50 mL of 0.3 M NaOH and adds water to give a final volume of 1 L. What is the pH of the final solution? Please show you work.
*August 31, 2015*

** AP economics **

Explain how each of the following people would talk about scarcity and trade-offs the president of the United States, the leader of a developing nation, a US citizen whose income is in the top 1% and US citizen whose income is in the bottom 5%
*August 26, 2015*

**PSY 202**

According to a 2011 report that is explained in our textbook, which of the following is one of the four overriding obstacles to gender equity in the workplace?
*August 26, 2015*

**algebra**

wright the slope-intercept formof the equation of each line given the slope and y- intercept slope=4/5, y-intercept=2
*August 19, 2015*

**Math 157**

Find the prime factorization of 33^5*39*25^12 Thanks!
*July 31, 2015*

**MTH 157**

Thank you!
*July 31, 2015*

**MTH 157**

A company will need $50,000 in five years for a new addition.To meet this goal the company deposits the money in an account today that pays 4% annual interest compounded quarterly. Find the amount that should be invested to total $50,000 in 5 years. Thanks for the help!
*July 31, 2015*

**Math**

What is the greatest prime you must consider to test whether 7356 is prime?
*July 26, 2015*

**psychology**

* Does life really start in prenatal development? * Who are the actual individuals involved in the prenatal stage of development?
*July 17, 2015*

**research paper**

am i doing it correctly ?? Importance & benefits of stretching & warm-up exercises: Warm-up is exercising at a lower intensity in order to get the blood circulating and let your body know that you are preparing for exercise. While Stretching is an exercise designed to extend ...
*July 13, 2015*

**research paper**

Can anyone help me in writing a research paper on the importance & benefits of stretching & warm-up exercises
*July 13, 2015*

**Statistics**

Thank you!!!!!
*July 9, 2015*

**Statistics**

Is my question to vague? I am an older college student struggling to do statistics with no algebra background!!
*July 9, 2015*

**Statistics**

Police stopped 527 drivers. Of those stopped, 298 were ticketed. Of those 298, exactly 127 were cited for more than one violation. Estimate the probability that a driver who was stopped got a ticket. Which way is the correct one? 1/527=.0018 or 1/298=.003 Or am I way off?
*July 9, 2015*