Thursday

April 24, 2014

April 24, 2014

Total # Posts: 1,160

**math**

if sound travels 6770 feet in 6.4 seconds. how far will it travel in one minute

**question**

Quick question, If I post a question on here would you be able to delete it?

**Algebra**

Thank you

**Algebra**

If Sam takes 6 hours to paint a house, and Pat takes 12 hours to paint the same house; how long with it take the 2 men to paint the same house together? What is the correct formulary?

**math**

Sandra makes a pizza she puts mushrooms on 2/8 of the pizza she adds green peppers to 5/8 of the pizza which topping covers more of the pizza

**calculus**

Skeletal remains had lost 70% of the C-14 they originally contained. Determine the approximate age of the bones. (Assume the half life of carbon-14 is 5730 years. Round your answer to the nearest whole number.)

**algebra**

Your monthly commission as an appliance sales person is represented by the equation, S = 50x+450, where 50 is the rate paid for each appliance sold, x is the number of appliances sold, 450 is the base pay per month, and S is the salary. Complete the following table to represen...

**Physics**

A penny is dropped from a 50 m high bridge, how fast was the penny moving when it hit the water?

**Physics**

A penny is dropped from a 50 m high bridge, how fast was the penny moving when it hit the water?

**biology**

In which stage of mitosis does DNA replication occur?

**earth**

What causes sedimentation in the ocean?

**physics**

is this right?if 5.0m/s^2=6.0m/s-0/1.2s a=fn/m 5.0m/s=15.0N/3kg show that the 5.0m/s^2 acceleration can result from a net force of 15N exerted on a 3.ok cart

**pre-algebra**

1. Jaron is downloading a file. The size of the file is 3200 KB. It takes 3 minutes to download the first 1200KB of the file. If the file continues downloading at the same rate, how many more minutes will it take to finish downloading? 2. Jacob is selling t-shirts at a music f...

**math**

estimate each unit rate.1) 295 words in 6 minutes.find each unit price.then tell which has the lower unit rate. 2) $3.99 for 25fl.oz of detergent or $6.99 for 90 fl.oz of detergent.3) $d/12 hr= $96/8 hr 4. One molecule of nitrogen reacting 3 molecules of hydrogen makes 2 molec...

**math**

write each ratio in simplest form..1) 2 yards to 15 feet.2) in a survey,9 out of 10 doctors recommended a certain medicine.if 80 doctors were surveyed,how many doctors recommended the medicine? 3)find each unit rate.travel 804 miles in 16 hours.4) the mass of a diamond is 1.76...

**Physics**

Analyzing Roller Coaster Performance Using Conservation of Mechanical Energy At the beginning of a roller coaster ride, the car is lifted to the top of a large hill and released. The speed of the car at the top of the hill is small, so we will assume it to be zero. The car rol...

**Physics**

Mars has a moon (Phobos) with an orbital period of 7.67 hours and an orbital radius of 9.4x106 m. Use Kepler’s 3rdLaw to estimate the mass of Mars.

**Physics**

Two blocks are attached together with a piece of string. Block #1 (3 kg) slides along a rough horizontal surface and block #2 (2 kg) hangs off the end of the surface. If the blocks accelerate at 2.5 m/s2 in the directions shown, determine the tension in the string and the coef...

**Physics**

A regulation baseball has mass 145 g and diameter 22.86 cm. Will this ball float or sink in water? Vsphere = € 4 3π⋅r3

**Physics**

A 200g block of copper at 90o C is dropped into 400g of water at 27o C contained in a 300g glass beaker at 27o C. What is the final equilibrium temperature of the mixture? cCu = 0.0924 cal/g°C cglass = 0.2 cal/g°C cwater = 1 cal/g°C

**Physics**

Gas is confined in a tank at a pressure of 10.0 atm and a temperature of 15o C. If half of the gas is withdrawn and the temperature is raised to 65o C, what is the new pressure of the gas?

**Physics**

A 1-liter aluminum container at 20o C is filled with 0.975 liters of mercury at 20o C. If both the container and the mercury are heated, at what final temperature will the mercury completely fill the container? (Hint: this is a volume expansion problem) αAl = 24 × 1...

**Physics**

A pair of eyeglass frames made of plastic with a coefficient of linear expansion of 1.30x10-4 (Cº ) -1 have circular lens holes of diameter 4.40 cm at room temp (20º C). To what final temperature must the frames be heated in order to insert lenses 4.42 cm in diameter...

**Physics**

A 10 kg penguin slips down a rough incline of 35o . If the coefficient of kinetic friction between the penguin and the incline is 0.15, determine the penguin’s acceleration.

**Physics**

A ball on the end of a string is cleverly revolved at a uniform rate in a vertical circle of radius 85.0cm. If its speed is 4.15 m/s and its mass is 0.300 kg, calculate the tension in the string when the ball is (a) at the top of its path, and (b) at the bottom of its path.

**Physics**

A Jet plane traveling 1800 km/h (500 m/s) pulls out of a dive by moving in an arc of radius 6.00 km. What is the plane’s acceleration in g’s?

**Physics**

Mars has a moon (Phobos) with an orbital period of 7.67 hours and an orbital radius of 9.4x106 m. Use Kepler’s 3rdLaw to estimate the mass of Mars.

**Physics**

A 25 g bullet is fired from a rifle with a barrel of length 65 cm. The bullet starts from rest at one end of the barrel and experiences an average force of 1200 N due to the expanding gases as it moves down the length of the barrel. a) Calculate the work done on the bullet by ...

**Physics**

Two blocks are attached together with a piece of string. Block #1 (3 kg) slides along a rough horizontal surface and block #2 (2 kg) hangs off the end of the surface. If the blocks accelerate at 2.5 m/s2 in the directions shown, determine the tension in the string and the coef...

**History**

What is the significance of the black stone and where is it located? How did the caravan trade benefit the Arabian peninsula in the fifth and sixth centuries and why did the trade routes change during this time?

**History**

Identify the changes in the arabian peninsula during the 600's

**Language Arts**

Can you explain this quote for me???? "weathered many bitter nights"

**Language Arts**

wait sorry I mean Why is he referred to as "the strategist Odysseus'? To this the strategist Odysseus answered: “My lady goddess, here is no cause for anger. My quiet Penelope-how well I know- Would seem a shade before your majesty, Death and old age being unknow...

**Language Arts**

To this the strategist Odysseus answered: Why is he referred to as "the strategist Odysseus'? “My lady goddess, here is no cause for anger. My quiet Penelope-how well I know- Would seem a shade before your majesty, Death and old age being unknown to you, While sh...

**Language Arts**

I got it thank you very much :)

**Language Arts**

What does this comparison tell you? A gull patrolling between the wave crests of the desolate sea will dip to catch a fish, and douse his wings; no higher above the whitecaps Hermes flew

**History (Check Answers)**

True or False. 1. Raiding one’s enemies was known in the Quran as the “struggle in the way of God” or jihad. 2.The courage of the Arab soldiers was enhanced by the fact that they had superior weapons to most of their enemies. 3. Mu’awiyah moved the capital ...

**History**

True or False? The general mu'awiyah was known for one outstanding trait: he used more force than necessary whether it was needed or not

**Science**

the gravitational force between two objects is proportional to the blank of the distance blank

**Science**

Fill in the blank- The gravitational force between two objects is proportional to the ______ of the masses of the objects.

**Language Arts**

Think of some examples of how you change the following elements of a conversation in a formal situation. Vocabulary Pronunciation Abbreviated words Idioms Also give two examples of different situations that require you to use the formal language.

**physics**

A novice golfer on the green takes three strokes to sink the ball. The successive displacements of the ball are d1 = 4.06 m to the north, d2 = 2.05 m northeast, and d3 = 1.15 m at 30.0° west of south (see the figure). Starting at the same initial point, an expert golfer co...

**Finance**

On August 1, 2005 you invested $3,000 into a mutual fund. You then invested $1,000 into that same mutual fund on the first day of August for each of the years 2006 through 2013. You averaged a 7.25% annual rate of return on your investment in this mutual fund. What is the valu...

**science**

An astronaut of mass 120 kg recedes from her spacecraft by activating a small propulsion unit attached to her back. The force generated by a spurt is 30 N. Show that her acceleration is 0.25 m/s2.

**Paleolithic People**

Describe the types of shelter and housing that were used by Paleolithic peoples

**World History Honors**

Thank you so much!

**Military History**

Two questions: 1. By 1864, only two Confederate ports remained open and actively participating in blockage running. One of these was: Mobile Charleston Savannah Boston 2. What percentage of Union army enlistments came from the draft? 9 13 15 10

**Military History**

Who did Lincoln promote to overall Western commander on March 11, 1862? A. Henry Halleck B. William Halsey C. Percy Hobart D. Nathan Forrest

**Chemistry**

The reaction b/t H2 and O2 yield water vapor and has a change of heat =-484kJ.Ho much PV work is done and what is the value of the change of E in kJ for the reaction of 0.50 mol of H2 with 0.25 mol of O2 amd atmospheric pressure of 1.00 , the volume change is -5.61.

**math**

the average middle distance runner at a local high school runs the mile in 4.5 minutes with a standard deviation of 0.3 minute the percentage of a runners that will run the mile in less than 4 min is %

**algebra**

An object 4.2 feet tall casts a shadow that is 12.6 feet long. How long in feet would the shadow be for an object which is 15.3 feet tall?

**Grammar**

I'm going to high school next year so I wouldn't have her as a teacher again in the future.

**Grammar**

Thank you so much! :)

**Grammar**

I want to give my Algebra teacher a letter to show how much her effort on helping me learn made me appreciate her and I just want to know if this sounds okay. Dear (my teacher's name), I just wanted to take some time to express how much I enjoyed being in your class this y...

**math**

Triangles ABC and DEF are similar. The similarity ratio of to is , AB = 40, BC = 25, and AC = 35. What is the perimeter of ?

**accounting**

Customer relations are usually part of:

**Global History**

How did geography both help and hinder the peoples of Africa?

**Physical Science**

The amount of air above you decreases or increases if you increase or decrease in elevation. The less air above you, the less air pressure pushing down on you.

**Math**

I don't get this question! Please help. A pizza is divided into 8 slices. Diana eats 1/16 of the pizza in 5 minutes. At this rate, how many slices can she eat in one hour?

**Algebra**

A company has two printers. Printer A prints a pages per minute, and Printer B prints b pages per minute. When Printer A prints for 3 minutes and Printer B prints 5 minutes, a total of 70 pages are printed. When Printer A prints for 6 minutes and Printer B prints for 9 minutes...

**Algebra**

Using the substitution method, what is the value of a in the solution to the system of equations below? a=3b+7 4a+9b=70

**Social Studies**

To break away from

**Physics**

What are two types of waves

**Forces (Science)**

Describe 2 contact and 2 non-contact force examples. Please and thank you very much. :)

**Forces (Science)**

What slope would a person have on a distance-time graph if they were speeding, slowing down, or not moving at all?

**Chemistry (2 questions)**

1. What kinds of bonds will most likely form from groups 1,2,3,6,7, and 8 on the periodic table? 2. What kinds of bonds will most likely form from group 4 on the periodic table?

**maths**

WHATEVER

**maths**

EIGHT DAYS

**maths**

12 MEN AT A CAMP HAVE FOOD TO LAST 10 DAYS. IF 3 MEN JOIN THE CAMP.HOW LONG WILL THE FOOD LAST?

**chemistry**

What is the amount of H2O that can be produced by combining 89.7 of each reactant in the following equation: 4NH3(g) + 5O2 (g)----> 4NO(g) + 6 H2O(g)

**pos and neg inf limits**

sorry what is O, i dont understand

**pos and neg inf limits**

Help with this please?

**pos and neg inf limits**

x-> + infinity (x-sqrt(x^2-3x)) for this i got 3, because after it is rationalized i got 3x/x= 3 x-> - infinity (3x^2+4x+2)/(5-x+x^3) i got 3/x , and zero as the final answer are they right. thank you.

**Absolute Value and Limits**

Help with this one ?

**Absolute Value and Limits**

solve for limits of 1+ and 1- for this function: (x^2 + abs (x-1) - 1)/ abs (x-1) i dont know how to simplify abs. value expression times polynomial. can someone please help.

**calculus**

i dont get why you would multiply the numerator by that. please explain

**calculus**

as x-> + infinity (limit) 3x^4-2x^2/x^4+5x^2 i got positive infinity. is this right

**Calculus **

I know how to do this problem, but I'm stuck at the arc length differential. Set up an integral for the arc length of the curve. (Do not evaluate the integral) x=y^2ln(y), 1<y<2 dx/dy = 2yln(y) + y ds= sqrt (1 + (2yln(y)+y)^2 so far I have sqrt (1 + 4y^2ln(y) + 2[2y^...

**Science**

in what ways do you think earth's moon may be similar to mercury

**math $$**

k ty i have 4 more *so sorry* Carson wanted to make a cylindrical pillow for his mother's b-day the pillow was to be 15 inches long with a diameter of 6 inches and would be filled with stuffing. determine how many cubic inches of stuffing carson will need to make the pillo...

**math $$**

k ty i have 4 more *so sorry* Carson wanted to make a cylindrical pillow for his mother's b-day the pillow was to be 15 inches long with a diameter of 6 inches and would be filled with stuffing. determine how many cubic inches of stuffing carson will need to make the pillo...

**math $$**

ok but that is not one of the answers and it can't be reduced

**math $$**

ok but that is not one of the answers and it can't be reduced

**math $$**

ty sooooo much another question (sorry about all these just trying to get this done and learn it before tom.) Jennie calculated the probabilities of various events involving a coin. What is the probability of a coin landing on heads at least twice when the coin is flipped thre...

**math $$**

sorry knights my computer was messying up so...

**math $$**

The graph of 5x-2y=10 intersects the x-axis and y-axis what are the order pairs for these two points of intersection? A.(2,0) and (0,5) B.(2,0) and (0,-5) C.(-2,0) and (0,5) D.(-2,0) and (0,-5)

**math $$**

again sorry did it again

**math $$**

ty sooooo much another question (sorry about all these just trying to get this done and learn it before tom.) Jennie calculated the probabilities of various events involving a coin. What is the probability of a coin landing on heads at least twice when the coin is flipped thre...

**math $$**

ty sooooo much another question (sorry about all these just trying to get this done and learn it before tom.) Jennie calculated the probabilities of various events involving a coin. What is the probability of a coin landing on heads at least twice when the coin is flipped thre...

**math $$**

The graph of 5x-2y=10 intersects the x-axis and y-axis what are the order pairs for these two points of intersection? A.(2,0) and (0,5) B.(2,0) and (0,-5) C.(-2,0) and (0,5) D.(-2,0) and (0,-5)

**MATH PLZ**

ty both so much

**MATH PLZ**

Which is true when a negative nuber is subtracted from a positve number? A.the difference is always 0 B.the difference is always positive C.the difference is always negative D.the difference could be negative or positive *i need examples to

**Math plz fast i really need it**

i don't get it can you explain it better plz

**Math plz fast i really need it**

neither mind but can u help with the second

**Math plz fast i really need it**

okay but can you expain it better plz

***math***

The graph of 5x-2y=10 intersects the x-axis and the y-axis what are the ordered pairs for these two pairs of intersection A.(2,0) and (0,5) B. (2,0) and (0,-5) C.(-2,0) and (0,5) D. (-2,0) and (0,-5)

**Grammar**

one last question sorry: Which is correct? (1) He took the news bad. (2) He took the news badly.

**Grammar**

what prefix turns the word "town" into a word meaning "center of town"?

**early childhood education**

A poem that does not ryme is called: a. free verse. b. narrative. c. a lyric. d. nonfiction.

**solar system**

which planet has enough gravity to hold on to most gases?

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