# sylvia

Most popular questions and responses by sylvia-
## Algebra

1.A motorcycle has a reserved fuel of 0.5 liter which can be used if it's 3-liter fuel tank is about to be emptied. The motorcycle consumes at most 0.5 liter fuel for every 20 km of travel. a. What mathematical statement represents the amount of fuel that

*asked on November 23, 2015* -
## Chemistry

2Al + 3CuSO4 --> + 3Cu + Al2(SO4)3 * copper(II) sulphate is a hydrate 1.2g of CuSo4 50mL of water 1.0 g of aluminum foil What is the limiting reactant?

*asked on February 15, 2011* -
## Algebra

On a summer day in Cape Cod, the depth of the water at a dock was 4ft at low tide at 2:00 AM. At high tide 5 hours later, the heist of the water at the dock rose to 14 feet. Write a cosine function to model the height of the water at the dock x hours after

*asked on May 8, 2017* -
## Chemistry

If you place an aqueous solutions of CuBr2 (which is then Cu(H2O)4 2+) with solid KBr added to it in a hot water bath what do you observe and why?

*asked on June 21, 2009* -
## Chemistry

How much Na2CO3 would you weigh to prepare M/20 Na2CO3 solution in 100cm3 volumetric flask?

*asked on June 28, 2017* -
## math

EF is a median of isosceles trapezoid ABCD. Find EF if AB is equal to 3 inches, and CD is equal to 11 inches.

*asked on May 25, 2010* -
## Physics

A 0.12-kg ball traveling with a speed of 40 m/s is brought to rest in a catcher's mitt. What is the size of the impulse exerted by the mitt on the ball?

*asked on December 28, 2010* -
## Medcal Billing an Coding

I am stuck on this one coding scenario I'm hoping you can help me. I have gotten CPT code 90947 or 90945 but I am unsure which is the right one? I need a CPT code for an inpatient hospital scenario, Dialysis Progress Note. The patient was seen during CAPD

*asked on September 3, 2015* -
## Hamilton

Julia studied math 3 1/3 hours during the 4 days before her last test. what was the average amount of time she studied each day

*asked on March 9, 2013* -
## chemistry

when aluminum metal reacts with iron (III) oxide to form aluminum oxide and iron metal, 429.6 kJ of heat are given off for each mole of aluminum metal consumed, under constant pressure and standard conditions. What is the correct value for the standard

*asked on December 2, 2008* -
## Physics

A bowling ball has a mass of 6 kg and a speed of 1.5m/s. A baseball has a mass of 0.12 kg and a speed of 40 m/s. Which ball has the larger momentum?

*asked on December 28, 2010* -
## chemistry

In the experiment, a hydrate is heated to form an anhydrate. The masses of the before and after are measured and the percent of the water in the hydrate is calculated. If some of the hydrate spatters out of the crucible and isnt noticed, how will this

*asked on October 12, 2008* -
## Math calculus by rotation

Calculate the volume obtained by rotating around y= -3 the area between the curves x= y^2 -4 x+y+2=0 I did the Volume as an integral between (-4, 0) of (x^2 +x - 12 - 6(x+4) ^1/2) dx The method I used is seeing the solid as a washer(? Can someone help me

*asked on December 3, 2018* -
## Chemisty

Carbon dioxide is usually formed when gasoline is burned. If 30.0 L of Co2 is produced at a temperature of 1.00 X 103 C and allowed to reach room temperature (25.0 C) without any pressure change, what is the new volume of the carbon dioxide?

*asked on September 7, 2011* -
## math

The United Nation declared that the world's six-billionth inhabitant was born on October 12, 1999 in Bosnia. Don't discuss what is not said. Discuss what is said. what is wrong with this statement according to what is allowed in statistics?

*asked on August 25, 2010* -
## Chemistry

Calculate the weight of anhydrous Na2CO3 necessary to prepare M/20 solution in 100cm3 volumetric flask

*asked on June 28, 2017* -
## algebra

1. The geometric mean between the first two terms in a geometric sequence is 32. If the third term is 4, find the first term. 2. Insert a geometric mean between k and 1/k. 3. If 2 and 3 are two geometric means between m and n, fond the values of m and n.

*asked on July 16, 2016* -
## Algebra

I hope I can explain this. I can't draw the shape here, but it is a triangular prism that looks like a wedge of cheese. The height is 20 cm and the three sides are 13, 37, and 40 cm. There is also a line drawn from the corner of the two sides that are 13

*asked on February 27, 2013* -
## MATH

If I put $300 in an account that earns 5.5%, how much will there be in the account at the end of 21 years?

*asked on February 7, 2015* -
## 7th grade

if a perimeter of a garden is 82 feet. the length is 5 more than twice the width.what is th width of the garden?

*asked on August 30, 2010* -
## algebra

the sum of 4 times a number and -2 is equal to the sum of 5 times the number and -2. find the number.

*asked on March 20, 2019* -
## physics

1)The difference of potential between terminals of a battery is 6V. How much work is done when a series of negative charges totaling 0.5 C are moved from one terminal to another? 2) Two parallel metal plates have opposite charges and a difference of

*asked on February 27, 2010* -
## Chemistry

If you add Na2CO3 and AgNO3 together in a test tube what exactly would you observe and what would be the equation for the equilibrium system? If you then add HNO3 to the solution what exactly would you observe and what would be the equation for that

*asked on June 20, 2009* -
## American Constitutional Law

In view of canons of construction and interpretation, name and explain three necessary elements that you must consider before drafting language to amend the U.S. Constitution. Where do I find the three necessary elements?

*asked on April 9, 2019* -
## Statistics

(GRAPH) Sketch a normal curve that has a mean of 15 and a standard deviation of 4. On the same x-axis, sketch another normal curve that has a mean of 25 and a standard deviation of 4. Describe the two normal curves.

*asked on March 3, 2018* -
## epcc

How many moles of aluminum ions are present in 0.80 mole of Al2(SO4)3

*asked on October 24, 2015* -
## ALGEBRA

In a water refilling stationthe time that a pipe takes to fill a tank is 10 minutes more than the time that another pipe takes to fill the same tank. If the two . If the two pipes are open at the same time, they can fill the tank in 12 minutes. How many

*asked on July 21, 2015* -
## statistics

In this question, use Excel functions rather than Normal distribution tables. The number of new cars sold by "Ma's New Car Factory" in a financial year can be approximated by a normal distribution with a mean of 125,000 cars and a standard deviation of

*asked on September 11, 2014* -
## Chemistry

A student prepared 200mL of 0.01M solution of calcium phosphate, Can(PO4)2. What is the concentration of calcium in parts per million? Relative atomic masses Can =40, P =31, O =16

*asked on April 9, 2018* -
## Statistics

Find the area under the normal curve in each of the following cases. 1. Between z = 0 and z = 1.63 2. Between z = 1.56 and = 2.51 3. Between z = -0.76 and z =1.35 4. Between z= -0.26 and z = -1.76 5. To the left of z = 2.35 6 To the right of z = -1.31 7.

*asked on March 3, 2018* -
## Algebra - area

I hope I can explain this. I can't draw the shape here, but it is a triangular prism that looks like a wedge of cheese. The height is 20 cm and the three sides are 13, 37, and 40 cm. There is also a line drawn from the corner of the two sides that are 13

*asked on February 27, 2013* -
## calculus

A rectangle is to be inscribed under the arch of the curve y=4cos(.5x) from x=-pi to x=pi. What are the dimensions of the rectanlge with the largest area and what is the largest area? please explain.

*asked on November 15, 2008* -
## math

Owen and Ethan have $175 together. How much money does each of them have if Ethan has $33 more than Owen?

*asked on April 8, 2018* -
## Accounting

Nafari Company's sales budget has the following unit sales projection for each quarter of the calendar year 2011. January -March 1,080,000 April-June 1,360,000 July-September 980,000 October-December 1,100,000 Total 4,520,000 Sales for the first quarter of

*asked on October 13, 2010* -
## chemistry 101

if you had 14 moles of octane how many moles of carbon dioxide would you get?

*asked on April 28, 2011* -
## physics

What is the acceleration of the system if both blocks have a mass of 5.0 kg, and the coefficient of kinetic friction is 0.11? [___/4] (b) Determine the tension in the rope.

*asked on March 5, 2010* -
## analytic geometry

1. The orbit of the earth is an ellipse with the sun at a focus, the semi-major axes 93 million miles and the eccentricity is 1/60. Find the greatest and least distance of the earth from the sun. 2. A battle shipping is sailing at a straight line towards

*asked on January 30, 2016* -
## analytic geometry

1. Given the parabola defined by y^2 = -12x, find the coordinates of the focus, the length of the latus rectum and the coordinates of its endpoints. Find also the equation of the dielectric. Sketch the graph. 2. Find the eccentricity of an ellipse when the

*asked on January 28, 2016* -
## ALGEBRA

A car travels 20 kph faster than a truck. The car covers 350 km in two hours less than the time it takes the truck to travel the same distance. What is the speed of the car? How about the truck?

*asked on July 22, 2015* -
## Math

Sue buys 8.5 pounds of chicken to make tacos. She uses 0.3 pound of chicken for each taco. How many tacos can sue make?

*asked on November 21, 2013* -
## physics

A particle travels to the right at a constant rate of 6.1 m/s. It suddenly is given a vertical acceleration of 1.8 m/s 2 for 4.5 s. What is its direction of travel after the acceleration with respect to the horizontal? Answer between −180◦ and +180◦

*asked on October 5, 2013* -
## algebra

If my equation that I wrote does it matter how it is written. Does it matter if I write it' $200+$50h=c or c=$200+$50h or c=$50h+200

*asked on March 15, 2011* -
## Accounting

Nafari Company's sales budget has the following unit sales projection for each quarter of the calendar year 2011. January -March 1,080,000 April-June 1,360,000 July-September 980,000 October-December 1,100,000 Total 4,520,000 Sales for the first quarter of

*asked on October 13, 2010* -
## physics

using the strap at an angle of 31° above the horizontal, a Grade 12 Physics student, tired from studying, is dragging his 15 kg school bag across the floor at a constant velocity. (a) If the force of tension in the strap is 51 N, what is the normal force

*asked on March 5, 2010* -
## chem lab

In a pottasium permanganate and oxalic acid titration..why do we add sulfuric acid to the oxalic acid solution and then boil it before titrating??

*asked on January 12, 2009* -
## intermediate algebra

1. Two numbers differ by 8. If one-half the larger is added to one-fourth the smaller, the resulting sum is 22.Find the numbers. 2. Ten years ago a man was three times as old as his son. In 12 more years the son is three-fifths as old as his father. How

*asked on October 31, 2016* -
## Algebra

For each of the following expressions, determine all of the values of k that allow the trinomial to be factored over the integers. A) x^2 + kx - 19 B) 25x^2 + kx + 49 C) x^2 + kx + 8

*asked on May 25, 2016* -
## analytic geometry

1. Given the parabola defined by y^2 =-12x, find the coordinates of the focus,the length of the latus rectum and the coordinates of its endpoints.Find also the equation of the directrix. Sketch the curve. 2. Find the eccentricity of an ellipse when the

*asked on January 28, 2016* -
## Math

A speed boat travels at a rate of 20 km per hour in still water. It travels 55 km upstream the same time it travels 90 km downstream. What is the rate of current?

*asked on September 15, 2015* -
## precalulas

solve each equation over the given interval 2x=cosx for all values of x

*asked on November 27, 2011* -
## American History

Create a timeline tracking the major themes/paradigm shifts in American History from the Columbus's voyages through the Mexican-American War (1846-1848).

*asked on March 31, 2011* -
## calculus

find an equation for a line that is normal to the graph y=e^x*x and goes through the origin.

*asked on December 1, 2008* -
## Statistics

A. In a given normal distribution, the sample mean is 75 and the sample standard deviation is 4. Find the corresponding standard score of the following values: 1. 69 2. 85 3. 70 4. 65 B. In a given normal distribution, the population standard deviation is

*asked on March 3, 2018* -
## Math

1. Make a sketch of 5 rectangular open boxes such that a. the height of the boxes are the same, b. The boxes can hold 249cm^3, 504 cm^3,810 cm^3 and 468 cm^3 respectively. 2. Solve each quadratic equation by completing the square to determine the

*asked on June 21, 2017* -
## intermediate algebra

Mr. Lakandula would like to increase his production of milkfish due to its high demand in the market. He is thinking of making a larger fishpond in his 8000 sq. m lot near a river. Help Mr. Lakandulaby making a sketch plan of the fishpond to be made. Out

*asked on July 6, 2016* -
## World History

In what ways did Islam create the first “world civilization?” How was Islam changed by contact with indigenous faiths in Africa & Asia? How did Byzantium preserve & perpetuate the traditions of Rome? What roles did commerce play in the transmission of

*asked on April 13, 2013* -
## algebra

For me to solve the system of equations for the total cost of lawn care using the tequnique substitution am I right to say: c=$200+$50h c=$300+$25h would be c=$250 c=$325

*asked on March 15, 2011* -
## algebra

I have a problem with break even analysis? the question is I'm trying to find the cost between 2 businesses to care for my lawn. The one company has an initial fee of $200+$50an hour for labor cost and the second company has an initial cost of $300+$25an

*asked on March 15, 2011* -
## ECONOMICS

WHAT IS HORIZONTAL INTERGRATION

*asked on November 9, 2010* -
## economics

wHAT IS VERTICAL INTERGRATION

*asked on November 9, 2010* -
## Science

how many atoms of carbon in 18 grams of C3H8o

*asked on March 28, 2011* -
## accounting

I have answer a hypothetical situation question as to what advice I would give to a business owner whose business in growing on how to make her accounting work more efficient. She manually enters in cash sales daily, makes purchase orders over the phone,

*asked on September 26, 2010* -
## 7th grade

how many diffent arts are there in the whole world

*asked on February 4, 2010* -
## American History

Create a timeline tracking the major themes/paradigm shifts in American History from the Columbus's voyages through the Mexican-American War (1846-1848)

*asked on March 31, 2011* -
## calculus

the equation cosx=x has a solution in what interval?...the answer is given as [0,pi/2] can someone please explain why?? thnks

*asked on November 13, 2008* -
## english

help unscramble lesfat

*asked on September 21, 2008* -
## Physics

A projectile is kicked horizontally off a tall building with an initial velocity of 13.7 m/s. The projectile lands 56.2 m away from the base of the building. How long is the projectile in the air? How tall is the building? What is the velocity of the

*asked on September 27, 2017* -
## math

If a basketball player missed 41 free throws out of 100, what fraction and what percentage of free throws did the player make?

*asked on February 7, 2017* -
## Algebra

1. A man completing a 40km trip finds that by travelling one more km per hour, he could have made the journey in 2 hours less time. At what speed did he actually travel? 2. One pipe alone can fill a tub in 6 minutes less than it takes a second pipe alo e

*asked on August 17, 2016* -
## analytic geometry

1. Find the longest and shortest distance from (10, 7) to the circle x^2 + y^2-4x-2y-20=0 2. From the start, a man runs 4km towards north, 3 km towards east and takes a rest. Draw the line from starring point to resting point and line from resting point to

*asked on January 29, 2016* -
## analytic geometry

1. Find the equation of the asymptotic of the hyperbole x^2/9 - y^2/ 4 = 1. 2. Given the equation of a function 2x^2 + 5y^2 - 16x + 20y + 108 =0, translate the original so that the New equation will have no first degree terms. 2. Find the radius and the

*asked on January 28, 2016* -
## Medical Billing and Coding

I need a CPT code for an outpatient hospital scenario, Radiology Report. Examination: MRI of brain with contrast. Clinical symptoms: Slurred speech, right arm weakness. Magnetic resonance examination of the brain was performed prior to contrast utilizing

*asked on September 3, 2015* -
## Physical Science

Beginning at rest, you accelerate at a rate of 2.5 m/s^2 for 12 seconds. What is your final velocity?

*asked on October 22, 2014* -
## History

Can I study Archeology while I did mathematical Literacy at school ?

*asked on February 20, 2014* -
## United States Constition

Details: Part I: Principles of the Constitution Create a chart or a matrix outlining the following primary principles of the Constitution: 1. Self-Government 2. Separation of Powers 3. Checks and Balances Write an analysis of 250-500 words on the

*asked on February 23, 2013* -
## POS-301-0101 arizona government

Using 750-1,000 words, create a chronological narrative delineating the significance of the documents/events listed below that impacted the evolution of the United States Constitution. In your narrative, discuss each of the documents and/or events listed

*asked on February 12, 2013* -
## geometry

Do the following playing cards have symmetry: 4 of Spades; 9 of Clubs; 7 of Diamonds; 5 of Hearts? If so, explain the type of symmetry.

*asked on September 12, 2012* -
## American History

I need asap homework help

*asked on April 14, 2011* -
## Physics

Which of these types of motors or engines are heat engines? a. an automobile engine b. an electric motor c. a steam turbine

*asked on December 28, 2010* -
## Physics

A 0.4-kg ball has a velocity of 20 m/s. a. What is the kinetic energy of the ball? b. How much work was required to lift the box to this position?

*asked on December 28, 2010* -
## staistics/ math

A statistician needs to survey a sample of 50 people that is representative of voters in his community. He prepared a list of phone numbers of 50 randomly selected, expected voters. Next morning, he came to work at 8:00 and began to make calls. By 11:00

*asked on August 25, 2010* -
## Intro to LAN technologies

58. You have been contracted to build a network for a multimedia development firm that currently uses a 10-Mbps Ethernet network. The company requires a high-bandwidth network for the multimedia team, which constantly views and manipulates large files

*asked on March 14, 2010* -
## algebra

need help with fractions

*asked on October 18, 2009* -
## com 220

identify example of bias fallacies and specific rhetorical devices in the speech how did the speacher address arguments and counter arguments ? were the speacher's argument effective explain your answers.

*asked on September 28, 2008* -
## Health

Is giardiasis transmitted through direct and indirect contact with infected fecal material or by touching the moist lining of the eyes and nose? Isn't it transmitted through direct and indirect contact with infected fecal matter?

*asked on April 15, 2007* -
## Geography

Calculate the distance between town a latitude (30n) and town b on(latitude 70)

*asked on October 24, 2017* -
## Chemistry

How to identify anions

*asked on June 29, 2017* -
## Math

Find the roots using quadratic formula 1. X^2+7x =4 2. 4x^2 - 4x +1=0

*asked on June 23, 2017* -
## cpcc

a small plane is traveling due south a t a velocity of 90 m/s. It suddenly encounters a tailwind of 27 m/s heading due south. what is The "air velocity" of the plan stays the same....but what is the resultant velocity (aka..."ground velocity") of the

*asked on June 5, 2017* -
## analytic geometry

Determine the acute angle between the lines 3x - 7y = 21 and 5x + 3y = 15.

*asked on January 27, 2016* -
## physics

Find d electrostaticforce of a q1 to other charges.express ur answer as magnitude n direction

*asked on February 26, 2015* -
## Math

Sara cycled 11 miles from home to ranch in 1 1/2 hour. How many miles did she cycle per hour?

*asked on September 24, 2014* -
## Cult Anthro

Running amok (murderous raging) in Malaysian culture susto,spirit attack in Latin America,and fright in Carribean are example of what

*asked on July 1, 2013* -
## life orientation

in 10-15 lines critically discuss 5 ways in which the human or environmental problem impact on the community

*asked on April 23, 2013* -
## Algebra

Input 16 output 2 input 24 output 4 input 40 output 6 input 52 output 8 find y if x is given. X is input

*asked on April 23, 2013* -
## Algebra

Input 16 output 2 input 24 output 4 input 40 output 6 input 52 output 8 find y if x is given. X is input

*asked on April 23, 2013* -
## Algebra - volume

I can't draw the shape here, but the picture is of a 3-sided pyramid. One side of the base is 10", another side of the base is 3", and the height is 15". I need to find the volume and round to the nearest whole number.

*asked on February 27, 2013* -
## U.S. constitution

Using 750-1,000 words, create a chronological narrative delineating the significance of the documents/events listed below that impacted the evolution of the United States Constitution. In your narrative, discuss each of the documents and/or events listed

*asked on February 20, 2013* -
## Math

Given the function f(x)=5x(x-1)(x+7) FInd the largest non-negative x-value for which f(x)=0

*asked on January 14, 2013* -
## math

Now, think of a set of domain and range from your own life. Write a paragraph on whether you think your particular domain and range is or is not a function and why. I need a life a example? is it a function?

*asked on January 18, 2012*

## Pages

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