Sunday

January 22, 2017
Total # Posts: 337

**Physics**

These are Thermodynamics questions: There is a 7 kg piece of aluminum at 80°C placed in a 3 kg water at 20°C what is the final temperature? There is a piece of aluminum at 90°C placed in 2 kg of water at 35°C how much energy is transferred if the final ...

*January 13, 2017*

**History **

How are women increasingly impacting politics in America because of the 19th amendment?

*January 11, 2017*

**Math**

Convert equation from quadratic form to vertex form, y= a(x-h)^2 +k, by completing the square. y= -.25x^2+5.5x-5.25

*January 10, 2017*

**Math**

Use the quadratic formula to find the roots Y= -.25x^2 + 5.5x- 5.25

*January 10, 2017*

**physical science**

sooo 70g * 24 oC = 110 Oc?

*January 1, 2017*

**physical science**

How much heat is absorbed by a 70g iron skillet when its temperature rises from 24oC to 110oC? joules

*January 1, 2017*

**physical science**

A pendulum has 501 J of potential energy at the highest point of its swing. How much kinetic energy will it have at the bottom of its swing? joules

*January 1, 2017*

**math**

The scatterplot shows the number of minutes spent reading (x) and the number of pages read (y) by each of seven students last night. Use the labeled points to create a linear model that predicts the number of pages that a typical student reads in x minutes. Which equation ...

*December 15, 2016*

**physics**

The coefficient of kinetic friction for wood on wood is o.55. The coefficient of kinetic friction for wood on wood is 0.68. For a 3.5kg wood block being pulled horizontally: a. what is the pull force needed to start the wood block moving on a wood floor? b. how hard would you ...

*December 10, 2016*

**Math**

If you had 73 and you divided it by 5 what is your answer?? Answer:14.6

*November 3, 2016*

**Science**

Plz HELP me !!!!! I need to know a acrostic poem about safety plz help me it is due tomorrow

*September 7, 2016*

**Physics**

A 4.0-kg block slides down an inclined plane that makes an angle of 25° with the horizontal. Starting from rest, the block slides a distance of 2.5 m in 5.4 s. Find the coefficient of kinetic friction between the block and plane.

*June 27, 2016*

**Math**

1st question: Which events are not independent? You toss three coins and get one head and one tail. You choose three different ice toppings for a sundae. You draw to colored pencils without replacement and get one red and yellow. You pull a yellow marble from a bag of marbles...

*May 18, 2016*

**Geography**

Whatever... thanks for nothing

*May 6, 2016*

**Geography**

They had more land and British was in debt.

*May 6, 2016*

**Geography**

What are the political, economic, and social reasons why the stamp act was not not fair to the colonist?

*May 6, 2016*

**Physics**

A block of mass m=25 kg is hung by a massless rope of length L=1.90 m from the ceiling of an elevator. The elevator has a downward acceleration of a=2.20 m/s^2. When the pendulum is set in a small amplitude oscillation, the period T of the pendulum is: A) 2.50s B) 3.14s C) 1....

*May 2, 2016*

**math 7th grade**

Ingrid mixes 3.6 pounds of almonds with some raisins to make a trail mix. She divides the trail mix into 12 equal portions. Each portion weighs 0.7 pound. How many pounds of raisins did she use to make the trail mix? Express the answer to the nearest tenth.

*April 13, 2016*

**Algebra, math**

What happened when 1000 baseballs fell from an airplane?

*April 12, 2016*

**Geography**

If colonial boundaries have produced a large number of problems for African countries, could the contient's people revert to the boundaries that existed before European colonialism? What other solutions might there be to the problems created by Africa's borders?

*April 11, 2016*

**Physics**

5.62

*April 7, 2016*

**chemistry**

A reaction mixture of N2O4 and NO2 absorbs the heat given off in the combustion of 6.35 L CH4 measured at 24.7 C and 812 Torr. How many moles of N2O4 can be converted to NO2 as a result? CH4 + 2O2 --> CO2 + 2H2O Delta H = -890.3 KJ N2O4 --> 2NO2 Delta H = +57.2 KJ

*March 22, 2016*

**chemistry**

how many grams of solid calcium oxide must react with excess water to liberate the same quantity of heat as does the combustion of 24.4 l of methane gas (CH4), measures ar 24.7 c and 753 torr? CaO +H2O --> Ca(OH)2 Delta H = -65.2 KJ CH4 + 2O2 --> CO2 +2H20 Delta H=-890.3...

*March 22, 2016*

**Math**

Your computer supply store sells two types of laser printers. The first type, A, has a cost of $86 and you make a $45 profit on each one. The second type, B, has a cost of $130 and you make a $35 profit on each one. You expect to sell at least 100 laser printers this month and...

*March 4, 2016*

**Health PLEASE CHECK ANSWERS**

You are welcome!

*March 4, 2016*

**Health PLEASE CHECK ANSWERS**

Good job! I am not sure that #6 and #8 are correct. I do not know if they are correct. Not saying they are wrong just saying that I can't be sure! All the rest look great!! 😁😁😁😁😁

*March 4, 2016*

**health check my answers**

2 is A. Sorry! I didn't catch that!

*March 4, 2016*

**health check my answers**

Wonderful job!! I believe they are all correct! 😁😁😁

*March 4, 2016*

**Maths literacy ,life science,history,geography**

I don't understand your question... Please clarify! 😁😁😁😁

*March 4, 2016*

**Geometry B: Unit 3: Similarity Lesson5 Practice**

How can I help you, Blair?

*March 4, 2016*

**History(please check)**

5 is correct. I am not 100% sure about 3 & 4. So sorry!

*March 4, 2016*

**History(please check)**

2 is correct!

*March 4, 2016*

**History(please check)**

1 is correct. I will continue checking the others!

*March 4, 2016*

**Pre calculus DAMON CAN YOU HELP?**

Does anyone know how to solve this?

*March 4, 2016*

**Pre calculus**

Your computer supply store sells two types of laser printers. The first type, A, has a cost of $86 and you make a $45 profit on each one. The second type, B, has a cost of $130 and you make a $35 profit on each one. You expect to sell at least 100 laser printers this month and...

*March 4, 2016*

**English**

Absolutely!! Take your time! 😁😁😁

*March 4, 2016*

**English**

Hi Alexia! I would love to work through these questions with you. Please tell me what you think the answer is for number 2. I will check it and give you feedback! :)

*March 4, 2016*

**chemistry**

1. You don't have an arrow but I assume it goes between N2 and 2NH3. 2. You have no Kp or Kc listed. 3. You won't make any hydrogen atoms. Perhaps you meant, "How many atoms of hydrogen will be in the NH3 formed."

*March 4, 2016*

**math**

Please tell me what you think! :)

*March 4, 2016*

**statistics**

Okay, go ahead and make a list of all that you can think of. I will be happy to go over it with you!! 😁😁

*March 4, 2016*

**CHEMISTRY! HELP**

I'm not sure how to do or show the work for these two questions. A) & B.)!! please anyone help: A.) Suppose a chemical reaction starts with 5.00 g of copper (i) nitrate and 2.00 g of magnesium chloride. Balanced Equation: 2 CuNo3 + MgCl2 ---> 2 CuCl + MgNO3 1.) ...

*February 23, 2016*

**Maths**

-36 176 -34 -218

*January 25, 2016*

**AP Chem**

1. Van't Hoff factors depend on the concentrations of the dissolved solute species. Why would a dilute solution have a Van't Hoff factor closer to the ideal value? a. because in dilute solutions solute species are less likely to bump into each other and pair up. b. ...

*January 24, 2016*

**foreign languages**

vaca

*January 24, 2016*

**math**

Try wolframalpha[dot]com

*January 24, 2016*

**Math**

The given angle is in standard position. Determine the quadrant in which the angle lies. -25° A. Quadrant III B. Quadrant II C. Quadrant IV D. Quadrant I

*January 19, 2016*

**Grade 5 math**

This is pretty simple. Just multiply 16x75. Your answer Wil be in centimeters. Then just convert the centimeters to meters.

*January 19, 2016*

**percentages**

140% of what is 35? How do I solve it?

*January 12, 2016*

**Physics grade 11-**

A car traveling at 72 km/hr hits a tree. the driver, who has a mass of 55.0 kg comes to a rest 0.10s after the impact. What is the force that acts on the driver?

*December 11, 2015*

**Pre calculus**

Thanks!!! :)

*December 3, 2015*

**Pre calculus**

Use the given conditions to write an equation for the line in point-slope form. Passing through (-5, -7) and (-8, -6)

*December 3, 2015*

**Simple pre cal**

Thank you both!!! :)

*December 3, 2015*

**Simple pre cal**

Is the relation a function? {(14, 9), (15, 8), (8, 7), (1, 9), (15, 2)}

*December 3, 2015*

**algebra**

Sam spent 36.00 more than Lisa.They spent 75.00 total.How much did they spend each?

*December 2, 2015*

**social justice**

what are examples of distributive, retributive, and communative justice?

*November 30, 2015*

**math**

Explain why the graph of g(x) = 1/x has a horizontal asymptote. What is the equation of this asymptote? Will all reciprocal functions have the same horizontal asymptote?

*November 15, 2015*

**Math**

anna made 400 quarts of lemonade. she poured the lemonade into the containers. each container holds 4/7 of a quart. how many containers did anna use

*November 9, 2015*

**Algebra**

Maria starts walking at 8:00 at 4 miles per hour. Nichole starts walking at 8:12. At what constant rate of speed will Nicole need to walk to catch Maria at 8:42?

*November 4, 2015*

**Social Studies**

And one more thing...She is correct it is Boston Tea Party, I know I just read 10 pages on it and it says in the book and it is right on the test.

*November 4, 2015*

**Social Studies**

Ms. Sue...I am taking the same test, and these ARE the correct answers, I don't know what you are looking at but they are correct.

*November 4, 2015*

**Physics**

You push down on a book of inertia m resting on a table with a force directed at an angle θ away from vertical. The coefficient of static friction between book and table is μs. If θ is not larger than some critical value, you cannot get the book to slide no ...

*October 29, 2015*

**Precalculus**

Q: A ship leaves the port of LA and travels 120 miles on a bearing of S47ºW and then 110 miles on a bearing of N80ºW. Find the total distance traveled South and West and also its bearing from the port of LA. I have found the distance traveled South and West (approx. ...

*October 26, 2015*

**Chemistry**

1. Use the following balanced net ionic equation to determine the volume of 6.0 M HNO3 needed to react completely with 5.00 g of copper. 8H+(aq) + 2NO3-(aq) + 3Cu(s) → 2NO(g) + 4H2O(l) + 3Cu2+(aq)

*October 23, 2015*

**social studies**

It is Second Continental Congress, I just took the test and got a 100%! :)

*October 23, 2015*

**Math**

The ratio of the number of men to the number of women to the number of children in a theater is 3:5:2 there are 69 men in theater A.how many more are there in the theater B.how many children are there in theater

*October 20, 2015*

**chemistry**

A voltaic cell can be built using the reaction between Al metal and O2 from the air. If the Al anode of this cell consists of 65 g of aluminum, how many hours can the cell produce 1.5 A of electricity, assuming an unlimited supply of O2?

*October 18, 2015*

**Math**

What is 12 1/9+10 2/3? I need help please!;]

*October 15, 2015*

**Foley**

Math angle 1 is complementary to angle 2. angle 2 is supplementary to angle 3 equal to 126 degrees. find measure angle one

*October 2, 2015*

**Physics**

A 41 kg child sits in a swing supported by two chains, each 1.4 m long. If the tension in each chain at the lowest point is 261 N, find the child’s speed at the lowest point. (Neglect the mass of the seat.) Find the force of the seat on the child at the lowest point.

*September 26, 2015*

**Math**

Find two consecutive odd integers such that the sum of four times the larger and twice the smaller is 194. Help Thank you!

*September 23, 2015*

**Math**

Find two consecutive odd integers such that the sum of four times the larger and twice the smaller is 194. Please help! Thank you!

*September 23, 2015*

**Math**

is it 2704 tiles?

*September 16, 2015*

**Math**

Mrs. Cress's table measures 5 ft wide and 8 ft long. She wants to cover the table with 3 in square tiles. How many tiles will she need? Help Thank you!

*September 16, 2015*

**Math**

Are 1.6 square meters & 16 tenths square meters the same?

*September 8, 2015*

**music appreciation**

The basic framework for ordering music through time is the A. syllable. B. meter. C. value. D. phrase. I'm pretty sure it's B, but I really wanna ace this test.

*September 7, 2015*

**psychics**

you throw a ball straight upward into the air with a velocity of 20.0 m/s, and you catch the ball some time later. a) how long is the ball in the air b)how high does the ball go c) what is the balls velocity when you catch it I don't get how you are suppose to figure this ...

*August 20, 2015*

**Precalculus**

Water is flowing at the rate of 50 m^3/min from a conical reservoir (vertex down) of base radius 45 meters and height 6 meters. What is the water level when the reservoir has 5000 m^3 of water left in it?

*August 16, 2015*

**Calculus**

A box with a square base and no top is to have a volume of 32 ft3. What dimensions use the least amount of material (in other words what dimensions give minimum outside surface area)?

*May 24, 2015*

**math**

the areas of the rectangular faces are: 90, 54, and 60. What is the volume of the box?

*April 29, 2015*

**math**

a rectangle has an area of 48 square yards. For what whole number values of length and width will the rectang,e have the smallest perimeter?

*April 29, 2015*

**math**

for what whole number values of length and width will the rectangle have an area of 60 square yards and a perimeter of 38 yards?

*April 29, 2015*

**PHYSICS PLEASE HELP**

A very large firecracker explodes in the hallway into 3 fragments. Physics students rush to the scene to enrich their knowledge of the law of conservation of momentum. They report that Fragment 1: mass=1.23kg, v=8.70m/s, north Fragment 2: mass =2.60kg,v=6.10m/s,east fragment 3...

*April 28, 2015*

**Physics please help**

He drops a ninja ball device from a height of 10.0m. The mass of the enter device is 190g and the mass of the top (smallest) ball is 2.90g A) calculate the momentum of the device as it hits the ground (ignore air resistance) I know that this answer is 2.66 for sure B) if the ...

*April 28, 2015*

**MATH**

Actually, you can do it to only take 17 minutes. Betty takes Abby across, leaves her there, and rows back (4) Then Cassie and Dale row over together, and Abby takes the boat back (11) Then Abby and Betty row to the other side together(2) Grand total: 17

*April 27, 2015*

**Math**

Take a four digit number (abcd) and repeat it to make an eight digit number (abcdabcd). This eight-digit number always has at least three different prime factors, unless you start with a certain four-digit number. Which number is it?

*April 15, 2015*

**Math**

On Tuesday, Leslie spent 47 minutes on math homework, 39 minutes on science homework, 52 minutes on English homework, and 44 minutes on history homework. How much time did Leslie spend doing her homework on Tuesday?

*April 6, 2015*

**PHYSICS HELP**

Suppose the aliens watching the show are on the surface of Mars. Mass of Mars: 6.42 x 10^23 kg Radius of Mars: 3.394 x 10^6 m Calculate; A) the weight of a 40.0 kg alien on Mars B) the weight of 40.0kg alien on earh Earth-sun distance:1.50x10^11m Mars-sun distance: 2.28 x10^11...

*March 26, 2015*

**Geometry**

A 3-foot diameter wheel travels at a rate of 45 feet per second. How many seconds does it take for the wheel to make 100 turns?

*March 19, 2015*

**Geometry**

A wheel turns at a rate of 12 turns every 5 seconds. If the wheel travels at a speed of 225 inches per second, what is the wheel's diameter?

*March 19, 2015*

**L.A.**

Is 3 B?

*March 11, 2015*

**L.A.**

is 1. B? 2. A? 3. C? Thanks for the help!

*March 11, 2015*

**L.A.**

Can you help me please? Thanks!

*March 11, 2015*

**L.A**

Hey Callie can you help me with the some questions? Thanks

*March 2, 2015*

**Statistics**

Among the population of criminal justice students, the average score on the final exam was 74, with a standard deviation of 11.6. What is the probability of randomly selecting a student who earned an A (90 or better)?

*February 27, 2015*

**social studies**

Alright.

*February 23, 2015*

**social studies**

Confucius believed that society would do well if everyone always did his or her... A. duty*** B. prayers C. jobs D. best I think it is A

*February 23, 2015*

**Social Studies**

Come onnn my it's the last answer I neeeedd!!!

*February 23, 2015*

**Stats**

A basketball player makes 80% of her free throws. Recently during a very close game, she shot 5 free throws near the end of the game and missed 3 of them. The fans booed. What is the probability of her missing 3 (or more) free throws out of 5? Set up and conduct a simulation (...

*February 8, 2015*

**math**

200

*February 3, 2015*

**Language Arts - Iambic Pentameter**

She takes forever to answer one of my friends.

*January 23, 2015*