# Kendra

Most popular questions and responses by Kendra-
## Math help and check

Which kind of function best models the set of data points (–1, 22), (0, 6), (1, –10), (2, –26), and (3, –42)? linear **** quadratic exponential none of the above 2. Which kind of function best models the set of data points (–3, 18), (–2, 6),

*asked on March 9, 2015* -
## English

8. What can readers infer from the following quote from Act V, Scene 3 of Romeo and Juliet? Romeo: O, be gone! By heaven, I love thee better than myself; For I come hither arm’d against myself: Stay not, be gone;--live, and hereafter say, A madman’s

*asked on March 13, 2015* -
## Chemistry

In the experiment Nitration of Methyl Benzoate why is it important to add the nitric acid-sulfuric acid mixture slowly over a 15 minute period?

*asked on February 23, 2010* -
## Math check please

1. Solve the system of equations y=2x^2-3 y=3x-1 a)no solution b)(-1/2,5),(2,-5/2) c)(-1/2,-5/2),(2,5)**** d)(1/2,5/2),(2,5) 2. How many real number solutions are there to the equation 0=-3x^2+x-4? a)0 ***** b)1 c)2 d)3 3.solve the equation by completing

*asked on March 19, 2015* -
## math-algebra 2

What are the solutions of the quadratic equation? 2x2 – 16x + 32 = 0

*asked on October 11, 2012* -
## General Chemistry

Cinnamic alcohol is used mainly in perfurmery, particularly in soaps and cosmetics. Its molecular formula is C9H10O. a. Calculate the percent composition by masss of C, H, and O in cinnamic alcohol. b. How many molecules of cinnamic alchol, not acid ,are

*asked on May 17, 2010* -
## Math

The price of a stock, A(x), over a 12-month period decreased and then increased according to the question A(x)= 0.75x2-6x+20, where x equals the number of months. The price of another stock, B(x), increased according to the equation B(x)=2.75x+1.50 over

*asked on June 9, 2008* -
## Literature

PART A: What is Asimov's main idea in this essay? (Science an the sense of wonder) A- space is best appreciated through poetry B- poetry and science can work together****** C- the universe is more than beauty D- scientific knowledge is always advancing

*asked on October 17, 2016* -
## Math

Kendra has 5.5 pounds of popcorn and wants to package it equally in 50 bags. How can she use place-value reasoning to find the amount of popcorn to put in each bag?

*asked on September 14, 2016* -
## General Chemistry

PLEASE ANSWER VERY SOON I AM STUCK! Crystalline silicon has a cubic structure. The unit cell edge length is 543 pm. The density of the solid is 2.33 g/cm3. Calculate the number of Si atoms in one unit cell.

*asked on July 14, 2010* -
## Genera Chemistry

Nitric oxide (NO) reacts with oxygen gas to form nitrogen dioxide (NO2), a dark-brown gas: 2NO(g) + O2(g) -> 2NO2(g) In one experiment 0.886 moles of NO is mixed with 0.503 moles of O2. Calculate which of the two reactants is the limiting reagent. Please

*asked on May 26, 2010* -
## earth

Some people have proposed building a giant elevator from Earth's surface to geosynchronous orbit. The top of the elevator would then have the same orbital distance and period as any satellite in geosynchronous orbit. Suppose you were to let go of an object

*asked on October 7, 2011* -
## word problem Math

A pollster interviewed 500 university seniors who owned credit cards. She reported that 240 had Goldcard, 290 had Supercard, and 270 had Thriftcard. Of those seniors, the report said that: 80 owned only a Goldcard and a Supercard, 70 owned only a Goldcard

*asked on August 10, 2009* -
## physics

According to Newton's version of Kepler's third law, how would the ratio T^2/r^3 change if the mass of the Sun were doubled?

*asked on January 16, 2010* -
## Psychics

A freight car is moving freely along a railroad track at 7.0 m/s and collides with a tanker car that is at rest. After the collision, the two cars stick together and continue to move down the track. What is the magnitude of the final velocity of the cars

*asked on March 17, 2011* -
## physics

The engine of a toy rocket supplies an average acceleration of 38.0 m/s/s to the rocket for an interval of 0.80 s. A.)If the toy roocket is launched vertically, how high does it rise in this interval? B.) How fast is the rocket moving at the end of 0.80 s?

*asked on January 19, 2010* -
## Math

Round to the nearest hundredths 23.456

*asked on November 22, 2014* -
## English

I need a theme statement about discrimination

*asked on May 23, 2017* -
## Physics

In a popular amusement park ride, a cylinder of radius 2.19 meters is set in rotation at an angular speed of 5.09 rad/s. The floor then drops away, leaving the riders suspended against the wall in a vertical position. What minimum coefficient of friction

*asked on April 28, 2008* -
## chemistry

please explain why the gem-dimethyl groups appear as separate peaks in the proton NMR spectrum of isoborneol although they almost overlap in borneol

*asked on March 2, 2010* -
## math

Sam received a $290 discount loan to purchase a stereo. The loan was offered at 16% for 90 days. Find the interest in dollars and the proceeds for the following problem. The interest is $12.60, $11.60, or $10.60 ? The proceeds are $279.40, $278.40, or

*asked on January 26, 2010* -
## Chemistry

it takes 37.50 mL of 0.152 M sodium chromate to titrate 25.00 mL of silver nitrate. what is the molarity of the silver nitrate solution

*asked on November 15, 2012* -
## chemistry

Assuming all volume measurements are made at the same temperature and pressure, how many liters of oxygen gas would it take to react completely with 7.25 liters of hydrogen gas? Show all of the steps taken to solve this problem. Unbalanced equation: H2 (g)

*asked on July 14, 2011* -
## UncG

A 1300 kg sports car accelerates from rest to 90 km/h in 7.4 s. What is the average power delivered by the engine?

*asked on June 6, 2010* -
## chemistry

How many grams of calcium carbonate are required to prepare 50.0 grams of calcium oxide? CaCO3-> CaO + CO2

*asked on March 11, 2014* -
## Physics

On a distant planet, golf is just as popular as it is on earth. A golfer tees off and drives the ball 4.3 times as far as he would have on earth, given the same initial velocities on both planets. The ball is launched at a speed of 40 m/s at an angle of

*asked on September 19, 2011* -
## Chemistry

why is it important to add the nitric acid-sulfuric acid mixture slowly over a 15 minute period?

*asked on February 23, 2010* -
## Physics

A 437.7 N child and a 237.1 N child sit on either end of a 2.5 meter long seesaw. How far from the 437.7 N child should the pivot be placed to ensure rotational equilibrium? disregard the mass of the seesaw. answer in units of m.

*asked on April 2, 2008* -
## Spanish

Translate: Cuantos estudiantes hay en tu clase de espanol Translate:Que necesitopara mi clase de ingles? Thank you for using the Jiskha Homework Help Forum. I do not see that you even made an attempt! You learn much more when you try first! How many

*asked on December 13, 2006* -
## Statistics

4. The Graduate Record Exam (GRE) has a combined verbal and quantitative mean of 1000 and a standard deviation of 200. Scores range from 200 to 1600 and are approximately normally distributed. For each of the following problems: (a) draw a rough sketch,

*asked on November 22, 2014* -
## Physical Science: PLEASE HELP!!!!!

A wooden raft 3 m long x 2 m wide x 20 cm thick floats on a freshwater lake. A) Determine the buoyant force? B) If the raft itself has a mass of 600 kg, how many 65-kg people could it support?

*asked on February 23, 2012* -
## Physics

What hanging mass will stretch a 1.9-m-long, 0.54 - diameter steel wire by 1.2 ?

*asked on June 27, 2011* -
## General Chemistry

Nitric oxide (NO) reacts with oxygen gas to form nitrogen dioxide (NO2), a dark-brown gas: 2NO(g) + O2(g) -> 2NO2(g) In one experiment 0.886 moles of NO is mixed with 0.503 moles of O2. Calculate which of the two reactants is the limiting reagent. Please

*asked on May 24, 2010* -
## chemistry

Explain how the addition of a solute affects the vapor pressure of the solvent.

*asked on July 14, 2011* -
## physics

during space flight, astronauts often refer to forces as multiples of the force of gravity on earth's surface. what does a force of 5g mean to an astronaut?

*asked on January 16, 2010* -
## College Algebra

An executive invests $26,000, some at 8% and some at 6% annual interest. If he receives an annual return of $1,800, how much is invested at each rate?

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

what is the magnitude and sign of the molar heat of vaporization of butane

*asked on December 13, 2012* -
## Chemistry

Which of the following statements is (are) true? A. The vapor pressure of CO2 is lower than the vapor pressure of water. B. Sea water has a lower vapor pressure than distilled water. C. The vapor pressure of 1 m NaCl is higher than the vapor pressure of

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

The boiling point of a solution will ______ and the vapor pressure will _______ with a(n)_____ in the amount of dissolved solute.

*asked on July 14, 2011* -
## algebra

Perform the indicated operation. x/2+y/3-z/4

*asked on April 23, 2014* -
## chemistry

Use the collision theory to explain how increasing the surface area of a solute will increase the rate of the dissolving process.

*asked on July 29, 2011* -
## Us history

the sugar act was a new tax on molasses but actually lowered an earlier text what were the colonists doing in response to the earlier text that the sugar act try to stop? A.) Declaring independence from Britain B.) Paying only a portion of it C.) Holding

*asked on October 3, 2016* -
## Art Appreciation

Compare Raphael's School of Athens with Veronese's Christ in the House of Levi. How did each work reflect the environments of Rome or Venice?

*asked on April 22, 2013* -
## chemistry

A sample of gas has increased in temperature from 20° Celsius to 22° Celsius. Which of the following happens as the temperature of the gas goes up? A.The gas undergoes a phase change. B. The velocity of the gas particles decreases. C.The kinetic energy

*asked on July 29, 2011* -
## General Chemistry

3.71 When potassium cyanide (KCN) reacts with acids, a deadly poisonous gas, hydrogen cyanide (HCN), is given off. Here is the equation: KCN(aq) + HCl(aq) -> KCl(aq) + HCN(g) If a sample of 0.140 grams of KCN is treated with an excess of HCl, calculate the

*asked on May 24, 2010* -
## math

One day during flu season, 1/3 of the students in a class were out sick, and only 24 students were left. How many students are in the class?

*asked on December 5, 2016* -
## Calculus

Let f(t)=(1)/(t) Find a value of t such that the average rate of change of f(t) from 1 to t equals 14. t= ____

*asked on January 21, 2016* -
## General Chemistry

Calculate the number of C atoms, H atoms, and O atoms, in 1.50 grams of glucose (C6H1206). I do not understand how to calculate this. Please explain and post the correct answers.

*asked on May 17, 2010* -
## General Chemistry

Calculate the number of C atoms, H atoms, and O atoms, in 1.50 grams of glucose (C6H1206).

*asked on May 17, 2010* -
## Chemistry

When mixing 10m/L of 6 M HCl (diluted with 10 mL of water) with 0.1 g of Mg, how many moles of H2 are created and how many moles of Mg are reactant? I understand I must use n=(PV)/(RT) to find H2, since it is a gas, but the constant R is still confusing to

*asked on February 26, 2017* -
## goverment

America’s founders envisioned a _________________________ that was closer to the government of ancient Athens than to the political system found in America today

*asked on June 24, 2013* -
## Psychics

Bradley, working in his 23 C kitchen, is cooking himself a crepe in an iron skillet that has a circular bottom with a diameter of .30 m. How hot must the skillet be in order for Bradley to make a 710.3 m^2 crepe that just fills the bottom of the pan?

*asked on March 1, 2011* -
## Algebra

It is estimated that each cigarette a person smokes shortens that person's life by the amount of time she or he took to smoke it plus ten minutes. Write an algebraic rule that determines the number of minutes (t) a person's life is shortened by smoking c

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

Cinnamic alcohol is used mainly in perfurmery, particularly in soaps and cosmetics. Its molecular formula is C9H10O. a. Calculate the percent composition by masss of C, H, and O in cinnamic alcohol. b. How many molecules of cinnamic alchol are contained in

*asked on May 17, 2010* -
## Chemistry

A buffer solution is prepared by dissolving 0.400 mol of CH3COOH and 0.200 mol of CH3COONa in 1.00 L of water. 1.00 mL of 10.0 M HCl is added to a 100 mL portion of this solution. What is the final pH of the resulting solution? Ka of CH3COOH = 1.8 x 10¯5

*asked on June 26, 2011* -
## Statistics

The grades in the final exam of a random sample of 25 students produce a standard deviation, s = 9.5. a) Construct a 90% confidence interval estimate for the population variance, . b) Can we infer at 10% level of significance that the population variance

*asked on November 25, 2014* -
## Physics

On a spacecraft two engines fire for a time of 560 s. One gives the craft an acceleration in the x direction of ax = 5.10 m/s2, while the other produces an acceleration in the y direction of ay = 7.30 m/s2. At the end of the firing period, the craft has

*asked on September 19, 2011* -
## Algebra

The sum of two numbers is 68 and the difference is 10. What are the numbers?

*asked on April 26, 2011* -
## accounting

I need help in preparing the following: 1) record the 2008 transactions in journal form. 2) prepared the stockholders equt7y section of the company balance sheet as of December 31, 2008. Assume net income for the year is $4000, 000 The stockholders equity

*asked on July 27, 2008* -
## social studies

Where can I find information on: "What products might we get from the seven major regions of the United States?" (Great Lakes, Mountain, Southwest, Northeast, Plains, Pacific, Southeast) This encyclopedia article discusses the regions of the U.S. The

*asked on June 13, 2007* -
## Polynomials and quadratic application

I want to make a rectangular garden by fencing in a area on the back of my house. Three sides of the rectangle will be fencing; the fourth side will be the side of the house. I have 60 feet of fence. What dimensions should I make the rectangle so that I

*asked on April 28, 2012* -
## chemistry

N2+2H2=N2H4 What is the concentration of H2 at equalibrium when (N2)=.033 and (N2H2)= .042 M? Keq=5.29

*asked on April 26, 2012* -
## math

mia gave 1/3 of her 24 marbles to david how many did david get?

*asked on April 26, 2012* -
## calculus

use differentials to approximate the value of the squareroot of 4.3

*asked on April 18, 2012* -
## math

show that the sum of four consecutive whole numbers is divisible by 2

*asked on November 29, 2011* -
## us history

was the growth of democracy just a coincidence or did it contribute to the market revolution? i am trying to us this as a timeline.

*asked on July 11, 2011* -
## Physics

A con of soda displaces 3.79 * 10^-4 m^3 of water when completely submerged. Each 0.018 kg can contains 3.54 * 10^-4 m^3. Compare the buoyant force on a can of diet soda of density 1001 kg/m^3 to the force on a can of regular soda of density 1060 kg/m^3.

*asked on February 24, 2011* -
## math

in order to achieve from aerobic exercise, one should maintain one's heart rate at a certain level. A fourty year old women with a reating heart beat of 80 beats per minue should keep her heart rate between 140 and 160 beats per minute while exercising.

*asked on March 18, 2010* -
## Elementary Math for Educators

give three ways a student could find the product of 9x7 if she had not memorized this fact.

*asked on August 9, 2009* -
## Math

What is the amount of interest on the loan? $ b. What is the maturity value of the loan? $ c. What is the maturity date of the loan? Enter the full name of the month.

*asked on September 2, 2014* -
## General Chemistry

When potassium cyanide (KCN) reacts with acids, a deadly poisonous gas, hydrogen cyanide (HCN), is given off. Here is the equation: KCN(aq) + HCI(aq) -> KCI(aq) + HCN (g) In a sample of 0.140 grams of KCN is treated with an excess of HCI calculate the

*asked on May 26, 2010* -
## Medical Terminology

devise memory aids for any five terms relating to the musculoskeletal system

*asked on February 19, 2009* -
## Algebra

a student opens a book to two facing pages the product of the page numbers is 812, find the page numbers.

*asked on November 26, 2008* -
## physics

Calculate the potential energy of a 9.00 g bullet traveling 4.00 m above the ground at 50.0 m/s with respect to the ground

*asked on November 14, 2014* -
## Englishh

if my quote is exactly 4 lines do i have to indent it using MLA formatting an citations

*asked on April 11, 2013* -
## chemistry

31.0mL sample of LiOH, concentration unknown, is titrated with .52 M HCl. It takes 42.9 ml of HCl to reach the endpoint. What is the concentration of the base?

*asked on April 26, 2012* -
## math

Mia gave 1/3 of her 24 marbles to david. How many did david get?

*asked on April 26, 2012* -
## Algebra

If 10,000 is invested at 4.8% simple interest, how long will it take for the account balance to grow to 11,200.

*asked on June 1, 2011* -
## math

two-fifths of the voters already prefer candidate x. if he took money from a political action committee to buy television time, a third of those who do not now prefer him would be convinced to vote for him. But he would los the support of a fifth of those

*asked on March 17, 2011* -
## Algebra Help

Write the equation of a perpendicular bisector of the segment joining the points: (7,2) and (3,0). Okay, so I don't even know what a bisector is. Is there a formula for this or something? If some could someone tell me it. Or tell me the process.

*asked on August 26, 2010* -
## Algebra Help

It is estimated that each cigarette a person smokes shortens that person's life by the amount of time she or he took to smoke it plus ten minutes. Write an algebraic rule that determines the number of minutes (t) a person's life is shortened by smoking c

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

Is fertilizer usually basic or acidic? I'm referring to fertilizers that contain nitrates, phosphates, and arsenic. Thanks for investigating this.

*asked on March 22, 2009* -
## chemistry

besides a splint test, how can you determine whether hydrogen or oxygen is present?

*asked on December 15, 2008* -
## science

describe how carbon dioxide is managed by the rbc from the tissue

*asked on May 8, 2008* -
## algebra 1

how do you even start to begin how to slope in standard form and slope intercept and point slope cuz i have a test tomrrow on it Although it might be too late for your test, I searched Google under the key words "slope" to get these possible sources:

*asked on March 5, 2007* -
## using patterns

I am having trouble working on number patterns. I have to find the last three numbers of each pattern: 1)17,16,13,12 2)1,2,4,7 3)1,4,9,16 4.) 8,27,64 please help I don't understand amd my parents are trying their best to help me 4) this is a sequence of

*asked on August 24, 2006* -
## digital arts

sculpture is an example of preforming art true false**

*asked on February 7, 2018* -
## algebra 2

the sum of 3 consecutive intergers is 90. find the largest interger if x is the smallest interger

*asked on April 14, 2017* -
## Physics

Ball A is thrown upward from the top of a building and takes 12 s to hit the ground. Ball B is thrown downward with the same speed as Ball A and takes 7 s to hit the ground. How long does it take for ball A to reach it peak?

*asked on September 12, 2015* -
## Polynomials and quadratic application

Suppose I want a garden with 400 square feet. Write an equation that can be used to find the values for x that will result in that area.

*asked on April 28, 2012* -
## College Personal Finance

Annual interest of 6.0% paid if balance exceeds $900, $12 monthly fee if account falls below minimum balance, average monthly balance $1,135, account falls below $900 during 2 months. Round the answer to the nearest cent.

*asked on February 6, 2012* -
## Chemistry

Okay so I'm doing doing significant figures in chem. And I was just wondering for problems like this: .000456 dm + .00524 m Do I have to actually convert stuff? And on the ones with exponents what do I do ? Ex: 3845.2 m cubed/ 25.2354 m

*asked on August 27, 2011* -
## 8th grade

how to find common factors and common multiples for prime factorization.

*asked on September 16, 2010* -
## critical thinking

what is thinking

*asked on May 6, 2010* -
## physics

Newton assumed that a gravitational force acts directly between Earth and the Moon. How does Einstein's view of the attractive force between the two bodies differ from Newton's view?

*asked on January 16, 2010* -
## Economics

Do you know any websites where i can find out about capitalism in Switzerland? I searched "capitalism in switzerland" using goole, but i have not found a very informative site

*asked on June 1, 2009* -
## home economics

Can the snack itself be attractive?

*asked on April 19, 2009* -
## ENGLISH

The phrase "She called it a day" is __________.Select one of the options below as your answer:A. a metaphorB. hyperboleC. an idiomD. personification

*asked on August 30, 2011* -
## English

1)In what ways are the societies described in "The Children of Men" and "Brave New World" dystopias? 2)For what common reasons do the characters of "The Children of Men" and "Brave New World" rebel against their respective societal values?

*asked on November 27, 2008* -
## 2 Part of accounting

2 part of Accounting Homework Mar. 5 Declared a $.40 per share cash dividend to be paid on April 6 to stockholders of record on March 20. Mar 20 Date of record Apri. 6 Paid the cash dividend June 17 Declared a 10% stock dividend to be distributed August 17

*asked on July 27, 2008*

## Pages

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