# Posts by kathryn

Total # Posts: 165

**chemistry**

The specific heat of copper metal is 0.385 J/ g- K. How many KJ of heat needed to raise the temperature of 1.1 kg block of copper from 27.5 C to 50 C?

*March 19, 2017*

**art**

Compare and contrast the use of geometric shapes in Pablo Picasso's "three musicians" and Edward Hopper's "house by the railroad". Thanks!

*March 6, 2017*

**geography**

What physical features are significant in the locations of the major cities of the Middle East? Thanks!

*November 1, 2016*

**math**

0.13

*September 27, 2016*

**math**

it would tack the rack 23 seconds to run away

*May 6, 2016*

**Health**

Thanks Ms. Sue

*November 6, 2015*

**Health**

3. No matter if you are underweight, overweight, or an appropriate weight, you still need exercise. TRUE *** FALSE 4. A person who is heavier than the standard for the person's height is OVERWEIGHT *** OBESE HEFTY EXTREMELY OBESE 7. Which of the following does not describe...

*November 6, 2015*

**math**

A trainer for a professional football team keeps track of the amount of water players consume throughout practice. The trainer observes that the amount of water consumed is a linear function of the temperature on a given day. The trainer finds that when it is 90 degrees the ...

*March 3, 2015*

**statistics**

Wow!!! why are you working with the public being so rude. I didn't see the later response...I think you need to find a factory job where you don't haver to deal with people....more like machines....You have absolutly NO! people skills!!!! RUDE!RUDE!RUDE!!

*January 21, 2015*

**statistics**

A) Identify the question, population, and sample. b) Discuss any potential bias or lurking variables that may affect the results.? c) Write about the extent to which we can generalize the findings to all people who use cell phones. Stewart Fist reported the results of an ...

*January 21, 2015*

**Statistics**

I am totally lost on all of it.

*January 21, 2015*

**Statistics**

A) Identify the question, population, and sample. b) Discuss any potential bias or lurking variables that may affect the results.? c) Write about the extent to which we can generalize the findings to all people who use cell phones. Stewart Fist reported the results of an ...

*January 21, 2015*

**statistics**

A) Identify the question, population, and sample. b) Discuss any potential bias or lurking variables that may affect the results.? c) Write about the extent to which we can generalize the findings to all people who use cell phones. Stewart Fist reported the results of an ...

*January 21, 2015*

**Statistics**

use the stem-and leaf plot below to answer questions 11-13. Assume that 30/0=300 30/0 31/2 2 32/1 5 33/0 3 6 34/4 5 7 8 35/1 1 2 9 How many numbers are in the original data set? 6 16 22 9 What is the largest number in the data set? 9 22 35 359 If this data were put into a bar ...

*August 26, 2014*

**Statistics**

If a pie chart was created using the data from the table above, which selection of the chart would be the largest? the smallest? indicate the relative frequency amount as a decimal for both

*August 19, 2014*

**Statistics**

suppose 60 people are asked which method is best to avoid getting the flu. the results are shown in the table below. determine the percentage for each method and complete the table. round to the nearest whole number. Method Frequency % Flu shot 15 washing hands 36 taking ...

*August 19, 2014*

**Stats**

1.Number of people in attendance at a baseball game qualitative/ordinal qualitative/nominal quantitative/discrete quantitative/continuous 2. number of tracks on a CD qualitative/ordinal qualitative/nominal quantitative/discrete quantitative/continuous 3.eye color qualitative/...

*August 11, 2014*

**Algebra**

write the equation of the circle passes through the point (√5,0) and whose center is the origin

*May 21, 2014*

**Math**

identify the center and radius of the circle with the equation (x+5)^2+(y-2)^2=9 A. this equation represents a circle with center (5,-2) and a radius of 3 units B. This equation represents a circle with center (-5,2) and a radius of 3 units C. this equation represents a circle...

*May 21, 2014*

**Math**

identify the center and radius of the circle with the equation (x+5)^2+(y-2)^2=9 A. this equation represents a circle with center (5,-2) and a radius of 3 units B. This equation represents a circle with center (-5,2) and a radius of 3 units C. this equation represents a circle...

*May 21, 2014*

**algebra**

Which cosine function has maximum of -2, and a period of 2pi/3

*May 19, 2014*

**Algebra**

hahaha yes, yes i do its a problem for me(:

*May 19, 2014*

**Algebra**

the table shows the results of a survey of college students. find the probability that a student's first class of the day is a humanities class, given the student is female. First class of the day for college students male female humanities 70 80 science 50 80 other 60 70

*May 19, 2014*

**math help**

14x-3y+2z=100 -17x+8y+10z=11 -3x+13y+29z=81

*May 19, 2014*

**Algebra 2**

A beam rests against a wall, forming a 50 degree with the floor. Use the function y=9 sec 0 to find the length of the beam to the nearest tenth of a foot. choice: 14.0ft, 11.ft7, 5.8ft, 6.9ft

*May 19, 2014*

**Math**

dartboard is 16 inches and bulls eye is 6 inches

*May 19, 2014*

**Math**

Garrett throws a dart at a circular dart board. The dart board has a radius, and the bull's eye in the center of the dart board has a radius of 6 inches. What is the probability that a dart thrown at random within the dartboard will hit the bull's eye? Round your ...

*May 19, 2014*

**5th grade Math**

Sorry did not mean to post this question again! Steve answered it for me earlier. Thank you Steve for you answer!

*December 3, 2013*

**5th grade Math**

Dr. Gallo's waiting room has a total of 18 magazines, including 3 fashion magazines. There are 5 more cooking magazines than there are decorating magazines. How many decorating magazines are there? You can use cubes to act out the problem.

*December 3, 2013*

**5th grade Math**

Dr. Gallo's waiting room has a total of 18 magazines, including 3 fashion magazines. There are 5 more cooking magazines than there are decorating magazines. How many decorating magazines are there? You can use cubes to act out the problem.

*December 3, 2013*

**Statistics**

You are a real estate agent and you are trying to predict home prices for your clients that want to list their house for sale. You have a very small city without much data. You will need to use the data that you have available for the past year on homes that have been sold. ...

*June 2, 2013*

**Statistics**

Calculate the residuals using the following info: number of people:12,14,15,18,20,16,14,13,18,19,20,22 and cost of drinks:24,30,36,38,65,44,36,30,39,76,80,85

*June 2, 2013*

**Statistics**

You are a real estate agent and you are trying to predict home prices for your clients that want to list their house for sale. You have a very small city without much data. You will need to use the data that you have available for the past year on homes that have been sold. ...

*May 30, 2013*

**Statistics**

Calculate a linear regression, the residuals, and the correlation between two variables using the following info: number of people:12,14,15,18,20,16,14,13,18,19,20,22 and cost of drinks:24,30,36,38,65,44,36,30,39,76,80,85

*May 30, 2013*

**statistics**

Estimate the tenure of someone that could have $5.8($k) and 15 years of job satisfaction. Make sure to state your multiple regression equation in your example. What are some of things that you can estimate from the model? How effective is evaluating the R-squared of the model...

*May 30, 2013*

**Physics**

what force can cause the displacement of an object but does no work??

*April 25, 2013*

**math**

1. Ms.lynch has 21 coins in nickels and dimes. Their total value is $1.65. How many of each coin does she have? 2. A vending machine that takes only dimes and quarters contains 30 coins, with a total value of $4.20. How many of each coin are there?

*April 20, 2013*

**math**

the larger of 2 #s is 5 less than twice the smaller. their sum is 43. find the #s

*April 20, 2013*

**math**

The second of two numbers is 7 times the first. Their sum is 72. Find the numbers.

*April 20, 2013*

**physics**

A truck of mass 8,000kg is traveling along a level road at an initial speed of 25m/s. The driver then shifts into neutral so that the truck is coasting, and the truck gradually slows to a final speed of 13m/s.

*April 8, 2013*

**math check my answers**

squared= ^2

*April 3, 2013*

**math check my answers**

1. 2(x+3)squared-6x+5=0 Answer= 2xsquared+6x+23=0 2. 3xsquared-6x+5=-2(x+1)-10 Answer= 3xsquared-4x+17=0 How would I solve from this point?

*April 3, 2013*

**math**

if 30apples = $47 then 1 apple = x cross mutilpy and you get 30x=$47 divide each side by 30 x=1.56666666 rounded to $1.57 per apple.

*January 18, 2013*

**Writing**

i wrote about my school's dances (7th grade dances). It was be in the yearbook.

*January 18, 2013*

**Writing**

What are some ideas for a title of an article on dances at school?

*January 18, 2013*

**math (algerba 1) Please help!**

x+y=0 3x+y=-4 Sovle each system of equation by graphing. If got the answer (-3,3), but it's not there. Please explain!

*January 16, 2013*

**Physics**

Calculate the total heat content of 10 kg of ice at -23°C. (Hint: absolute zero is -273°C.) Be mindful of significant figure rules for both multiplication and addition.

*December 10, 2012*

**Physicis**

How much energy is needed to heat and melt 3.0 kg of copper initially at 83°C? Be mindful of significant figure rules for both multiplication and addition

*December 10, 2012*

**Physics**

A 6.00 Kg box is sliding across the horizontal floor of an elevator. The coefficient of kinetic friction between the box and the floor is 0.360. Determine the kinetic frictional force that acts on the box when the elevator (a) is stationary (b) accelerating upward with an ...

*November 7, 2012*

**Physics**

If the 50.0 kg boy were in a spacecraft 5R from the center of the earth, what would his weight be? (Use the 50.0 kg boy for significant figures) i got 20N again not sure.. it dosnt tell me if i got them wrong or right online classes are horrible and very confusing

*November 7, 2012*

**physics**

If an object is dropped from a tall building and hits the ground 3.0 s. later, what is the magnitude of the object's displacement in 1.0 s.; in 2.0 s.? for 1.0s i got 9.8 for 2.0s i got 20. is this correct?

*November 7, 2012*

**physics**

If an object is dropped from a tall building and hits the ground 3.0 s later, what is the velocity of the object when it hits the ground? (Remember that the velocity is downward) i got -29m/s is this correct?

*November 7, 2012*

**physics**

If an object is thrown up at an initial velocity of 9.8 m/s, what would be the magnitude of the final velocity upon impact with the ground? im doing an online class and i don't have a book so if you could explain some of the question that would be great thanks so much

*November 7, 2012*

**physics**

If an object is thrown up at an initial velocity of 9.8 m/s, what would be the magnitude of the final velocity upon impact with the ground? im doing an online class and i don't have a book so if you could explain some of the question that would be great thanks so much

*November 7, 2012*

**physics**

If an object is dropped from a tall building and hits the ground 3.0 s later, how tall is the building?

*November 7, 2012*

**chemistry**

I have a worksheet that has a question on it the question states: How much iron can be recovered from 25.0 g of Fe2O3 and that is all i have i have just started in the middle of this class can i have an explanation of how to get to the answer please?

*October 26, 2012*

**math**

Write a number with 8 more in the tens place (The number is 498,763.14)

*October 26, 2012*

**Math**

Ok I have it! 40 divided by 8 = 5 x 6 = 30 Roses

*October 1, 2012*

**Math**

Bunches of 6 roses were selling for $8. Anita paid $40 for roses. How many roses did she buy? PLEASE HELP!

*October 1, 2012*

**Trig**

Prove cos^2t+4cost+4/cost+2=2sect+1/sect

*March 5, 2012*

**Trig**

A ship leaves port with a bearing of S 40 W. After traveling 7 miles, the ship turns 90 degrees on a bearing of N 50 W for 11 miles. At that time, what is the bearing of the ship from port?

*March 5, 2012*

**Trig**

prove sin(α+β)sin(α-β)=cos^2β-cos^2α

*March 5, 2012*

**chemistry**

I realize this, but I don't understand how to get k1 and k2 in the first question or the second. Also it only gives one temperature in the first question so would t1 and t2 be the same?

*March 5, 2012*

**chemistry**

I have two questions that I really don't understand. The first one is: A reaction proceeds with delta H=-10kJ/mol. The energy of activation of the uncatalyzed reaction is 150kJ/mol, whereas it is 100kJ/mol for the uncatalyzed reaction. How many times faster is the ...

*March 5, 2012*

**writing**

Socrates' role in the discussion is to derive an accurate definition of justice by using counterexamples against Thrasymachus' multiple renditions. Thrasymachus makes it easy for Socrates to prove him wrong because he is too quick to offer his definitions of justice ...

*March 3, 2012*

**writing**

Throughout the discussion with Socrates, Thrasymachus jumps to conclusions about what the definition of justice really is and does not consider the implications that he is making. This makes it easy for Socrates to shed light on the flaws in Thrasymachus' definitions and ...

*March 3, 2012*

**writing**

also, that he doesn't consider what his definitions really mean before he says them otherwise socrates wouldn't be able to prove him wrong as quick

*March 3, 2012*

**writing**

my stance is that he gives his opinion too quick.

*March 3, 2012*

**writing**

Ok here is a new one. I tried to follow all five of the tips. On multiple occasions, Thrasymachus is too quick to offer his definitions of justice and does not consider the implications that they put on society but Socrates is present to shed light on the weaknesses in ...

*March 3, 2012*

**writing**

*philosophers, sorry for mistake

*March 3, 2012*

**writing**

I need help writing a thesis statement for my philosophy paper. The paper is about two philosopher's, Thrasymachus and Socrates. Essentially the paper is about the multiple definitions of justice that Thrasymachus throws out and how Socrates proves them wrong and points ...

*March 3, 2012*

**french**

I need help unscrambling these words 1) gnarer al snoaim 2) eifra al srieupoes 3)pparrere esl samune-luugese 4) sersap l' atreuprasi 5) hetacer eds tuirfs cess. please help...

*February 8, 2012*

**AP Chem. 3**

A 1.80 g sample of a large boimolecule was dissolved in 21.0 g of carbon tetrachloride. The boiling point of this solution was determined to be 77.85°C. Calculate the molar mass of the biomolecule. For carbon tetrachloride, the boiling point constant is 5.03°C·...

*January 30, 2012*

**Prob and Stats**

If X is a random variable with distribution X~N(350,110) find (a)P(X<400) and b)P(250<X<400)

*October 4, 2011*

**statistics**

If a large number of people guess randomly on each of 100 items on a true-false test, the mean would be expected to be ì=___*, and ó=__*. • What % of the examinees would be expected to get a score of 65 or >?

*October 4, 2011*

**spanish**

Please translate these words into a sentence. bebur, manuel, debe, aqua

*September 16, 2011*

**Physics**

You ride your bicycle down a hill, maintaining a constant speed the entire time. 1. As you ride, does the gravitational potential energy of the Earth-bike-rider system increase, decrease, or stay the same? 2. Does the kinetic energy of you and your bike increase, decrease, or ...

*May 23, 2011*

**physics**

A backpack full of books weighing 58.0 rests on a table in a physics laboratory classroom. A spring with a force constant of 140 is attached to the backpack and pulled horizontally. If the backpack begins to slide when the spring ( = 140 ) stretches by 2.40 , what is the ...

*May 19, 2011*

**physics**

nvm. i got it. 84 was wrong... thanks for your help!

*May 19, 2011*

**physics**

plugging everything in do I get 84.15? That seems a little high...

*May 19, 2011*

**physics**

A car goes around a curve on a road that is banked at an angle of 30.5 . Even though the road is slick, the car will stay on the road without any friction between its tires and the road when its speed is 19.0 . What is the radius of the curve?

*May 19, 2011*

**Chemistry**

Which of the following compounds is a strong electrolyte? a. C6H12O6 b. C7H14O5 c. C4H8O2 d. NaC2H3O2 e. All of these --- I think it is D but I'm not sure. Also, how do you know if it is a strong or weak acid?

*April 20, 2011*

**math**

15trips

*April 18, 2011*

**MATH**

10*26=260

*April 18, 2011*

**MATH**

260 license plates

*April 18, 2011*

**Math**

paper = 10 point, 10 off for each day late. student missed 5 out of 10 and was 3 day late. what is the score?

*February 9, 2011*

**English**

By the house the boy and his dog were standing.

*February 2, 2011*

**Chemistry**

well, now working through it I get 5.4x10^14

*January 28, 2011*

**Chemistry**

Convert the value 8.1 x 10^15 ng/m3 to units of g/cm3. I am not sure how to do this kind of problem when the units are cubed. This is what I have so far. (8.1 x 10^15 ng/m3) x (1 g/ 1x10^9ng) x (1m/ 100cm) = 8.1 x 10^22

*January 28, 2011*

**chemistry**

Calcium Hydroxide

*January 18, 2011*

**health**

I copied this answer from answerbag. I hope it helps: There are so many ways to contract AIDS and HIV that its frightening when you think about it. Here are the most common: 1. Unprotected Sex - the #1 transmitter of AIDS and HIV, though that is being disputed currently. ...

*January 18, 2011*

**Chemistry--Quick Question**

Just clarifying but C would be an observation because you would be able to feel/observe the heat coming off of it as it reacts, right?

*January 18, 2011*

**Chemistry--Quick Question**

Okay, I take that back. I think the correct answer(s) would be A, C, and D. I don't think the answer is B because that is an observation and I don't think the answer is E because that is a theory.

*January 18, 2011*

**Chemistry--Quick Question**

Which of the following are LAWS according to the Scientific Method? It is possible for more than one answer. a. The volume of a gas is inversely proportional to its pressure. b. A solid has a mass of 100.0 grams and a volume of 11.1 mL. c. When a piece of magnesium burns in ...

*January 18, 2011*

**chemistry**

a magnet would pull the iron out of the sand and salt. Can you add water? If so you could add the sand and salt together with water. the salt would dissolve in water. You could use the filter to take the sand out of the saltwater/sand mix and then get the salt back by using ...

*January 18, 2011*

**chemistry**

density=mass/volume plug and chug your numbers to find out

*January 18, 2011*

**Chemistry**

That is correct. Electrons have a negative charge to them. Atoms typically have an equal number of protons, which are positive, to electrons. This makes the atom neutral. By losing an electron, and taking away a negative force, you weigh the atom on the positive side making it...

*January 18, 2011*

**chemistry**

Does Kv2SOv4, Kv2COv3 or KCv2Hv3Ov2 create the greatest increase in pH when mixed with water?

*January 13, 2011*

**chemistry**

The normality of Hv2SOv4 is given as 0.20 N for a reaction in which the Hv2SOv4 furnishes two hydrogen ions. What is the molarity of the Hv2SOv4? A. 0.40 M B. 0.30 M C. 0.20 M D. 0.10 M

*January 12, 2011*

**chemistry**

What is the gram equivalent mass? In a reaction of Hv3POv4 with a base, three protons are donated for each formula unit of Hv3POv4. What is the gram equivalent mass of Hv3POv4?

*January 12, 2011*