Monday

February 27, 2017
Total # Posts: 3,410

**Algebra**

Find the hydrogen ion concentration of a saturated solution of calcium hydroxide whose pH is 13.3. (If you enter your answer in scientific notation, round the decimal value to one decimal place. Use equivalent rounding if you do not enter your answer in scientific notation.)

*March 30, 2016*

**math**

show your work

*March 30, 2016*

**accounting**

martin and company purchased a fixed asset on 1/4/2010 for £250000.depreciation is o be provided at 10% annually according to the straight line method. the books are closed on 31wst march every year. prepare fixed asset account and depreciation account for the first ...

*March 30, 2016*

**Chemistry**

Which element has an ion that is smaller than an ion of calcium?

*March 29, 2016*

**math**

thx

*March 24, 2016*

**math**

what is .69 repeating in its simplest form? I need help

*March 24, 2016*

**algebra**

A ball is thrown straight up from a rooftop 9696 feet high. The formula below describes the ball's height above the ground, h, in feet, t seconds after it was thrown. The ball misses the rooftop on its way down. The graph of the formula is shown. ...

*March 21, 2016*

**Algebra**

The force needed to keep a car from skidding on a curve varies inversely as the radius of the curve and jointly as the weight of the car and the square of the car's speed.Suppose that 400 pounds of force keeps a 1600-pound car from skidding on a curve of radius 800ft at ...

*March 11, 2016*

**math 1149**

For the triangle shown, find the length AD. (Assume u = 19, v = 19, Úx = 25‹, and Úy = 25‹. Round your answer to two decimal places.)

*March 10, 2016*

**history**

Examples of Afro-Asian ethnicities ?

*March 8, 2016*

**Math**

Five times the larger of two numbers plus four times the smaller is 271. Three times the larger less twice the smaller is 57. find the numbers

*February 29, 2016*

**biology**

the amount of energy needed to start two reactants to form a product is?

*February 28, 2016*

**Algerbra**

Find three cosecutive odd intrgers such that when twice the smallest is added to five times the largest the result is -253

*February 28, 2016*

**hist/175**

Do you think that the Korean War was merely a civil war in which the United States supported one side, or should it be considered an international war in which the United States used the United Nations to further its anticommunist policies? Why?

*February 27, 2016*

**ps 27**

The sum of two numbers is 120. If four times four times the smaller number is subtracted from the larger number, the result is 15. Find the two numbers.

*February 24, 2016*

**Math**

If the temperature is a minus eight degrees and rises four degrees every hour for four hours, what will the temperature be??

*February 23, 2016*

**physics**

A 5.4-kg bucket of water is raised from a well by a rope. If the upward acceleration of the bucket is 3.7 m/s2, find the force exerted by the rope on the bucket. N

*February 21, 2016*

**physics**

A 61-kg man standing on a scale in an elevator notes that as the elevator rises, the scale reads 815 N. What is the acceleration of the elevator? m/s2 upward

*February 21, 2016*

**physics**

A bag of sugar weighs 3.00 lb on Earth. What would it weigh in newtons on the Moon, where the free-fall acceleration is one-sixth that on Earth? N Repeat for Jupiter, where g is 2.64 times that on Earth. N Find the mass of the bag of sugar in kilograms at each of the three ...

*February 21, 2016*

**physics**

A 5.4-kg bucket of water is raised from a well by a rope. If the upward acceleration of the bucket is 3.7 m/s2, find the force exerted by the rope on the bucket.

*February 18, 2016*

**physics**

A 61-kg man standing on a scale in an elevator notes that as the elevator rises, the scale reads 815 N. What is the acceleration of the elevator? m/s2 upward

*February 18, 2016*

**physics**

A bag of sugar weighs 3.00 lb on Earth. What would it weigh in newtons on the Moon, where the free-fall acceleration is one-sixth that on Earth? N Repeat for Jupiter, where g is 2.64 times that on Earth. N Find the mass of the bag of sugar in kilograms at each of the three ...

*February 18, 2016*

**physics**

A brick is thrown upward from the top of a building at an angle of 35° to the horizontal and with an initial speed of 15 m/s. If the brick is in flight for 2.7 s, how tall is the building? (in m) could someone help me please!!!

*February 7, 2016*

**physics**

thank you so much DAMON i really appreciate you help i was stuck on this problem for houra. Thank you again. and what time do you tutor and what days.

*February 7, 2016*

**physics**

A student stands at the edge of a cliff and throws a stone horizontally over the edge with a speed of 16.0 m/s. The cliff is h = 25.0 m above a flat horizontal beach, as shown in the figure below. How long after being released does the stone strike the beach below the cliff? s...

*February 7, 2016*

**physics**

A brick is thrown upward from the top of a building at an angle of 35° to the horizontal and with an initial speed of 15 m/s. If the brick is in flight for 2.7 s, how tall is the building?

*February 5, 2016*

**pysics**

for the first part i got 2.26 seconds, but for the: WHAT SPEED AND ANGLE OF IMPACT DOES THE STONE LAND? IM NOT GETTING THE RIGHT ANSWER FOR THE SPEED WITH THE CALCULATION IM GETTING -22.2M/S WHICH IS WRONG. AND SO IS THE ANGLE.

*February 5, 2016*

**pysics**

A student stands at the edge of a cliff and throws a stone horizontally over the edge with a speed of 16.0 m/s. The cliff is h = 25.0 m above a flat horizontal beach, as shown in the figure below. How long after being released does the stone strike the beach below the cliff? s...

*February 5, 2016*

**general chemistry**

mercury has density of 13.53 g/mL. what is the mass of 345mL of mercury? D=13.53g/mL Mass=345mL 13.53/345=0.039217391 i just do not think i am doing this right

*February 5, 2016*

**physics help please**

A brick is thrown upward from the top of a building at an angle of 35° to the horizontal and with an initial speed of 15 m/s. If the brick is in flight for 2.7 s, how tall is the building? in (m)

*February 4, 2016*

**physics**

A ball is thrown straight upward and returns to the thrower's hand after 2.00 s in the air. A second ball thrown at an angle of 40.0° with the horizontal reaches the same maximum height as the first ball. (a) At what speed was the first ball thrown? m/s (b) At what ...

*February 4, 2016*

**Algebra**

Thank you!

*February 3, 2016*

**Algebra**

Suppose that a constant force is applied to an object. Newton's Second Law of Motion states that the acceleration of the object varies inversely with its mass. A constant force acting upon an object with mass 12 kg produces an acceleration of 2m/s^2. The acceleration of ...

*February 3, 2016*

**Algebra**

Laura wants the average amount of money she spends in four days to be no more than $64. On the first three days she spends $71, $62 and $59. What is the greatest amount she can spend on day 4?

*February 2, 2016*

**math**

Tierra brought 4 3/8 yards of ribbon. 2 2/8 was blue and 1 2/8 was red. The rest of the ribbon was yellow. how many yards was yellow?

*February 1, 2016*

**Mtn view**

How many dimes & nickels make up 19.95?

*January 13, 2016*

**Fraction, word problem**

Karen has used 12 feet of ribbon for a project. This represents 3/8 of the total amount of ribbon. How much ribbon did she have at the start of her project?

*January 12, 2016*

**Physics**

If the velocity is given as v=t^2-2t+2 what is the acceleration when v=10m/s?

*January 11, 2016*

**math**

idek

*January 11, 2016*

**Physics**

A ladder ABC of length 20m is leaning against a wall at an angle from the horizontal. There is a roller at the top of the ladder that rests against the vertical wall. The coefficient of friction between the ladder and the horizontal surface at A is 0.5. Determine: (a) the ...

*January 9, 2016*

**walden university**

Which of the following is a temperamental characteristic that is associated with prosocial behavior? A. Low social anxiety B. Popularity among peers C. Coherent self-concept D. Intelligence

*January 9, 2016*

**Math-Fractions**

Abby baked 5 cherry pies. She wants to share them equally among 8 of her neighbors. How much of a pie will each neighbor get?

*January 5, 2016*

**Math**

6 students share 5 small pies equally

*January 5, 2016*

**Math**

Six neighbors share 4 pies equally. How much of a pie does each neighbor get?

*January 5, 2016*

**Life Span Development**

Which of the following is a temperamental characteristic that is associated with prosocial behavior? is B the correct answer A. Low social anxiety B. Popularity among peers C. Coherent self-concept D. Intelligence

*January 4, 2016*

**Life Span Development**

. Selena didn’t take the candy because she might get caught.

*January 4, 2016*

**Life Span Development**

As Selena and her friends are walking home after school they approach a corner store and see bags of candy and snacks on open shelves outside the front door. A young clerk is also outside waiting for customers. As they get closer, they see the clerk go inside the store. Selena...

*January 4, 2016*

**Physics**

If an object of mass 150kg is brought to rest by a supporting cable from a velocity of 20m/s in a time of 5s what is the tension in the cable during this stopping period?

*December 30, 2015*

**chemistry**

If the titration of a 30.0 mL sample of sulfuric acid requires 27.65 mL of 0.090 M sodium hydroxide, what is the molarity of the acid? H2SO4(aq)+2NaOH(aq)→Na2SO4(aq)+2H2O(l)

*December 27, 2015*

**socials 10 please help!!!**

What was the outcome of the numbered treaties on the first nations? please give full answers thank you!!!

*December 18, 2015*

**English**

why is it considered a bad thing to oversimplify things? I would say that oversimplification is harmful as it can lead to error & cause one to undermine the importance & complexity of important issues. But I need some more ideas?

*December 15, 2015*

**algebra**

coffee shop plans to mix grage a cogge costing $9.50/lb and grade b coffee costing &7 /lb to yield a 20lb blen costing $8.50/lb. how many pounds of each to make the blend? a=b=20 9.5a+7b=170

*December 12, 2015*

**Stats**

charity sells $6 raffle tickets first prizes to trace worth $3,000 2nd prize of $600 third prize is $40 and fourth prize $15 they sell 600 tickets what is the expected value

*December 9, 2015*

**Math**

a serving of cereal is 1 1/3 ounces. A box of cereal contains 20 2/3 ounces. How many servings does each box of cereal provide? Do not round. Give exact answer.

*December 1, 2015*

**Math**

Need help please. The reciprocal of .125 is what number?

*November 21, 2015*

**Math**

Bob is building a house. He has a piece of wood that measures 2 1/3 feet long. He cuts off 3/4 feet, how long is the measure now?

*November 17, 2015*

**Math**

a truck is carrying apple,mango,and grape juce and grape juice bottles in a ratio of 6:1:2. If there are 17 mango juice bottles, then how many grape juice bottles are there?

*November 10, 2015*

**Math**

thanks Ms. Sue.

*November 7, 2015*

**Math**

Please check my answer. Multiply the reciprocal of 4 1/2 by 8/9. My answer: 9/2 x 8/9 2/9 x 8/9 = 16/81

*November 7, 2015*

**math**

Phillip opened a savings account with an annual interest rate of 8% and an initial deposit of $3500. If his interest is compounded quarterly, how much is in Jeffrey’s account after 2 years? Round your answer to the nearest cent. interest compounded quarterly: A equals P ...

*November 4, 2015*

**Algebra**

The perimeter of the triangle is 49 units. Find the value of y. Side A: y+3 Side B: 4y-2 Side C: 3y

*November 3, 2015*

**Math Algebra**

Thank you!

*November 2, 2015*

**Math Algebra**

TechWiz Electronics makes a profit of $35 for each MP3 player sold and $18 for each DVD player sold. Last week, TechWiz sold a combined total of 130 MP3 and DVD players. Let x be the number of MP3 players TechWiz sold last week. Write an expression for the combined total ...

*November 2, 2015*

**Algebra**

Thank you!

*November 2, 2015*

**Algebra**

The sum of the four angle measures of any convex quadrilateral is 360 degrees. Suppose that a convex quadrilateral has angle measures of 90, 10y+4, and 3y-2 degrees. Write an expression for the degree measure of the fourth angle.

*November 2, 2015*

**algebra**

a survey of 2,000 people was given to find their mode of transportation to work each day. the pie chart gives the results of people surveyed Bike 3.8% taxi 9.8% walk 3.4% bus 14.6% drive 68.4% how many traveled by bike to work?

*October 31, 2015*

**algebra**

A group of 1,200 people was surveyed to find their favorite choice of fruit. the pie gives results of people surveyed oranges 19.2% kwiw 16.2% bananas16.6% apples 30.2% other 12.8% of the people surveyed, how many prefer bananas?

*October 31, 2015*

**Math**

I LOVE UUUUU ♡♡♡♡♡♡♡♡♡♡♡♡♡♡♡♡♡♡♡♡♡♡♡♡♡♡♡♡♡♡♡♡♡♡♡♡♡&#...

*October 28, 2015*

**Social Stu4dies**

I LUV uuùuuuuuuu👄👄👄👄👄👄👄👄👄👄👄👄👄👄👄😉😃😃😃😃😃😃☺b

*October 27, 2015*

**physics**

A falling stone accelerates at a constant rate of 10ms^2. It is dropped from rest down a deep well and 3s later a splash is heard as it hits the water below.(1) How fast will it be moving as it hits the water? (2)What will be its average speed over the three seconds ? (3) how ...

*October 27, 2015*

**chemistry**

At what ph will Al(OH)3 begin to precipitate from a .10 M solution of AlCl3?

*October 27, 2015*

**chemistry**

150 mL of a solution contiains .00015 M NaI, .0055 M NaC, and .12 M Na3PO4. A solution of .10 M AgNo3 is slowly added. Who precipitates 1st, 2nd, and 3rd? When the last one to precipitate just begins to precipitate, what % of the other 2 anions are still remaining in solution?

*October 27, 2015*

**chemistry**

How many grams of Ca(OH)2 can be dissolved in 550mL of a .0500 M NaOH solution. Ksp - Ca(OH)2 is 5.5 x 10-5

*October 27, 2015*

**chemistry**

The nitrogen content of a .2476 g sample of a protein was determined by the Kjeldahl method. The NH3 produced with the whoosh was distilled into exactly 50.00mL of HCl in the receiving flask, which was in excess of the amount required to capture the ammonia gas. The excess HCl...

*October 27, 2015*

**SOC 320**

Which of the following is one of the stated reasons why government agencies and the bureaucracy are important players in iron triangles?

*October 25, 2015*

**SOC 320 Public policies and Social services**

Which of the following is one of the stated reasons why government agencies and the bureaucracy are important players in iron triangles?

*October 25, 2015*

**SOC 320 Public policies and Social services**

. Which of the following was added to the procedural requirements of the EPA under the Reagan administration? (Points : 1) Use of cost-benefit analysis Review using the precautionary principle Inclusion of industry representation in decision-making. Completion of an EIS ...

*October 25, 2015*

**chemistry**

An aqueous solution contains three solutes. One liter contains: 0.200 moles of calcium chloride, 0.150 moles of magnesium chloride, and 0.750 moles of sodium chloride. How many grams of Cl are there per liter of this solution? a. 39.0 g b. 51.4 g c. 78.0 g d. 80.3 g e.103 g

*October 24, 2015*

**chemistry**

an acid-base neutralization is the reaction of a)H2(g) with O2(g) to form H2O(l) b)H2(aq) with OH-(aq) to form H2O(l) c)H+(aq) with o2(g) to form H2O(l) d)H+(aq) with OH-(aq) to form H2O(l) e)Na+(aq) with OH-(aq) to form NaOh(aq)

*October 24, 2015*

**Soc 320 public policy and social services**

The author describes efficiency as

*October 23, 2015*

**social studies**

thank u

*October 21, 2015*

**social studies**

a. residency in a certain state or country. b. the right to elect government leaders. c. formal members in a national state. d. jobs that must be done to help the government

*October 21, 2015*

**social studies**

wait im putting them up

*October 21, 2015*

**social studies**

the word citizenship most closely means?

*October 21, 2015*

**Research**

All “Factorial ANOVAs” share the characteristic of

*October 16, 2015*

**Algebra**

I need to find the rule of the sequence. n 2 3 4 5 t(n) 75 1875 46875 1171875 I know the bottom is times 25, but I don't get how to do a rule that is t(n)=

*October 13, 2015*

**Chemistry**

A sample of nitrogen gas is collected over water at a temperature of 23 degrees C. What is the pressure of the nitrogen gas if the atmospheric pressure is 795 mm HG? Anser in units of mm Hg.

*October 13, 2015*

**Chemistry**

A student determines the freezing point of a solution of 1.96g of naphthalene in 25.64g of paradichlorobenzene(PDB). The following temperature-time reading are recorded. PDB/Napthalene Time(Min) 0 0.5 1.5 2 2.5 3 3.5 4 4.5 Temp(°C) 59.7 58.0 54.8 53.4 52.1 50.9 49.5 49.6 ...

*October 12, 2015*

**Chemistry**

A student determines the freezing point of a solution of 1.96g of naphthalene in 25.64g of paradichlorobenzene(PDB). The following temperature-time reading are recorded. PDB/Napthalene Time(Min) 0 0.5 1.5 2 2.5 3 3.5 4 4.5 Temp(°C) 59.7 58.0 54.8 53.4 52.1 50.9 49.5 49.6 ...

*October 12, 2015*

**algebra**

15 less than one-ninth of P

*October 10, 2015*

**Physics**

An aircraft piston engine starts from rest and accelerates to 1500rpm in 4.95s. This engine through a reduction gearbox drives a 9m diameter propeller at 55rpm What is the engine's angular displacement in 4.95s?

*October 1, 2015*

**Math**

6*2,6*20,and 6*200

*September 28, 2015*

**Math**

Divide the reciprocal of -12 by -1/3? the answer I came up with is 1/4, is this correct?

*September 25, 2015*

**math**

one radio station broadcasts the weather every 8 minutes and other station broadcasts a commercial every 4 minutes. Another station plays a "Golden Oldie" every 6 minutes. If all three of the stations broadcast both a weather forecast, a commercial, and play a "...

*September 24, 2015*

**Math**

Find the derivative: Write answers without negative or rational exponents. f (x)= 2 g (x) = 3x(4power)+ 6x(3power)-1

*September 24, 2015*

**Physics**

If you throw a ball straight up at 10 m/s and release it 2m above the ground: a) What height will the ball reach V^2=u^2+2as 0=100+19.6s s=5.1+2 s=7.1m b)How long after you release the ball will it hit the ground? (Answer should be 2.22s but need help getting there)

*September 23, 2015*

**science**

Many chemical salts come as hydrated crystals. That is, there is a specific ratio of water molecules associated with the salt crystals e.g. MgSO4.7H2O (called Magnesium sulphate heptahydrate FW = 246.5) has 7 water molecules to every Mg2+ and SO42- ion pair. But it is also ...

*September 21, 2015*

**Chemistry**

average atomic mass of isotopes

*September 20, 2015*

**Science**

A student mistakenly used an ethanol solution containing an unknown ionic compound in part C of the experiment. How would this affect the Van't Hoff factor determined experimentally? Justify your answer with an explanation.

*September 16, 2015*