# Posts by Anonymous

Total # Posts: 106,782

**Chemistiy**

Complete & Balance the Equation: i) Zn + Cu(NO3)2 -> ii) Ag + Mg(NO3)2 -> iii) Al + HNO3 -> iv) Mg + Fe(NO3)2 -> My Answers: i) 2 Zn + Cu(NO3)2 -> Cu + 2 ZnNO3 ii) Ag + Mg(NO3)2 -> No RXN iii) Al + HNO3 -> Al(NO3)3 + NO + 2H2O iv) Mg + Fe(NO3)2 -> Mg(...

*January 15, 2017*

**chemistry**

45 ft by 62 ft = 15 yards by 20.67 yards A = LW A = 310.05 square yards 310.05 * 21 = 6511.05 Therefore the carpet will cost $6 511.05

*January 15, 2017*

**Chemistry**

Calculate enthalpy of the reaction ethene+hydrogen gives ethane are -1410KJ,-286kJ and -1560KJ respectively at 25°c

*January 15, 2017*

**Math**

Sheena is now one third of her father's age.Twelve years hence she will be half as old as her father.Find their present ages??

*January 15, 2017*

**geography**

What is the difference between lind and unlined canal

*January 15, 2017*

**Algebra**

What is the formula for the nth term of this sequence: 2, 6, 12, 20...

*January 14, 2017*

**Algebra**

What is the formula for the nth term of the following sequence: 1, 4, 9, 16....

*January 13, 2017*

**bearings **

PQRS are four locations on the same horizontal plane Q is an bearing of 041 degree from P and the distance is 40km,S is 28km from R on a bearing 074 degree, R is directly due north of P and the distant between Q and R is 38km. Find to the nearest whole number a. the bearing of...

*January 13, 2017*

**Social Studies**

ms.Sue could you help me next.

*January 13, 2017*

**stuff**

When Morganâ€™s dad returned from the store, he went for a jog. He jogged for 1 hour and 15 minutes at a pace of 4.8 miles per hour. How far did he jog?

*January 13, 2017*

**math**

Ms.Sue please help me.

*January 13, 2017*

**math**

please help me.

*January 13, 2017*

**math**

somebody please help me now this before 2:15 P.M TODAY!!!!!!!!!!!!!!!!

*January 13, 2017*

**math**

In a proportional relationship, why must the graph of the line always go through the origin (0,0)?

*January 13, 2017*

**Social Studies**

I need help with The Early Republic, Lesson 6 Monroe's Presidency in American History.

*January 13, 2017*

**social studies**

Their emotional readiness some young couples don't think their capable or ready to take care of a child they want to be ready emotionally inclined

*January 13, 2017*

**Science **

Has anyone took the Structures and Properties test for 8th grade. I'm a student at connections and I need help.

*January 13, 2017*

**Math**

tHE SUM OF THREE NUMBERS IS 75. THE SECOND NUMBER IS 5MORE THAN THE FIRST AND THE THIRD IS THREE TIMES THE SECOND. FIND THE NUMBERS.

*January 13, 2017*

**Maths**

How much will it cost for 14 sq metres of carpet at £18 a yard

*January 13, 2017*

**Math - Algebra**

"in the first ----> 12 + 41 = 30" Sorry if this sounds dumb, but where does the 12 come from?

*January 13, 2017*

**Math - Algebra**

Six small marbles and four large marbles have a combined weight of 30 g, whilst seven small marbles and two large marbles have a weight of 23 g. Find the weight of a large marble. Can someone help me create the equation? Thanks.

*January 13, 2017*

**math**

The difference between two numbers is 11 and twice the smaller number, minus four, equals the larger number. Find the two numbers.

*January 13, 2017*

**math**

300 bees have enough honney supplies to last 9 months. They are joined by 150 bees whose hive has been destroyed by a storm. How long will the honey supplies last now?

*January 13, 2017*

**Physics**

the engineer of a passenger train traveling at 100 ft/sec sights a freight train whose caboose is 600 ft ahead of the same track. The freight train is traveling in the same direction as the passenger train with a velocity of 30 ft/sec. The engineer of the passenger train ...

*January 13, 2017*

**AP Physics 1 **

A 1400 kg car is moving westward with a speed of 12 m/s, and a 3600 kg truck is traveling east with a speed of 27 m/s. Find the velocity of the center of mass of the system. Answer in units of m/sˆ

*January 13, 2017*

**math**

4336677

*January 12, 2017*

**math;););)**

sorry it's formatted weirdly

*January 12, 2017*

**math;););)**

Previously you found that a 15-degree counterclockwise rotationcenteredat(2,1)sendsthepoint(4,6)toanother point (x, y) ? (2.638, 6.347). The diagram on the right shows the vector v in the same direction as vector [2,5], only with a di?erent length. Similarly, the vector u is ...

*January 12, 2017*

**math**

I got 2.109 instead of 3.253 but thanks for helping me! It must've taken you a long time to type all of that.

*January 12, 2017*

**math**

can someone plz help me?

*January 12, 2017*

**math**

Let A = (0,0,0), B = (9,8,12), and C = (6,2,3). Find coordinates for the point on line AB that is closest to C.

*January 12, 2017*

**PLEASE ANSWER! I NEED HELP**

Question: Suppose you have sunlight shining on two clear containers of water on a table. Light waves refract through one of the containers but diffract around the other container. Describe how the two containers are different. A link would be useful too, or a website! (I have ...

*January 12, 2017*

**PLEASE ANSWER!!**

Sorry, but we did not discuss in class, we only used a book and I've never learned about waves before.

*January 12, 2017*

**PLEASE ANSWER!!**

Predict: How resonance can cause earthquakes to do greater damage to some buildings than others. Analyze: If two astronauts were able to go on a space walk without wearing suits. Explain why they would not be able to talk to one another. Describe: How could you use ...

*January 12, 2017*

**Science**

What is the kinetic energy of a soccer ball which has a mass of 4 kg and is kicked at a velocity of 10 m/s?

*January 12, 2017*

**physics**

a skateboarder with mass 75 kg is riding their skateboard of mass 8 kg at 1.5 m/s. If they decide to jump off sp that their body has no horizontal movement in the air before landing, how fast must the skateboard be moving after they separate

*January 12, 2017*

**Math**

if I run the 400 meter dash in 14.5 seconds. What is my speed in meters per second

*January 12, 2017*

**Waves (8th Grade)**

Predict: How resonance can cause earthquakes to do greater damage to some buildings than others. Analyze: If two astronauts were able to go on a space walk without wearing suits. Explain why they would not be able to talk to one another. Describe: How could you use ...

*January 12, 2017*

**Physical Science**

Question: Suppose you have sunlight shining on two clear containers of water on a table. Light waves refract through one of the containers but diffract around the other container. Describe how the two containers are different. (I have to write three lines, it's not a lot...

*January 12, 2017*

***English**

Sorry hit enter before i was done. ... comparing Oedipus Rex,Hamlet, King Lear and Death of a Sales men I say they are the same. a tragedy for a rich person is no different compared to a poor person except the fact that for a rich person it affects more people. However, i am ...

*January 12, 2017*

**Engli**

How is the tragedy of a rich and powerful person different than that of a poor and powerless person?

*January 12, 2017*

**Math**

Kaya pasted 3 rows of photos on each of 5 pages of her scrapbook. She put 2 photos in each row. How many photos are in Kaya's scrapbook?

*January 12, 2017*

**Calculus**

Find the derivative of the function to the velocity function, and plug in 2 for t.

*January 12, 2017*

**Physical science **

two forces of 5N and 12N respectively act on the same point.show how you would determine the magnitude of the resultant by using the tail to head and tail to tail methods and Pythagoras theorem

*January 12, 2017*

**SS**

Hint: the main words behind the ruling were "separate but equal."

*January 12, 2017*

**Physics**

For part two, I think they are referring to the energy it takes to convert liquid water from 100 degrees to boiling water at 100 degrees (latent heat). I understand the first part now.

*January 12, 2017*

**Physics**

You and another person go to the museum and decide to take a look at an exhibit that has a bike with an attached heating coil/generator. The coil is placed in a tank of water at 20 deg C. Peddling makes the coil increase the energy of the water. The goal is to make the water ...

*January 12, 2017*

**sdsdd**

box contains 100 bolts of which 9 are defective. Find the probability that a bolt chosen at random is not defective.

*January 12, 2017*

**4th grade math**

Rhonda bakes p pies Mary bakes 3p pies If together they bake 20 pies, how many pies does Mary bake

*January 12, 2017*

**Physics**

An object is 10 mters long and has a weight of 125N. The weight of the object is determined by the expression, 250N= a10m+B kg/m. What are the units of a and B

*January 11, 2017*

**Physics **

What is the period of a wave that travels through a spring at 2.5 m/s and has a wavelength of 1.3 meters?

*January 11, 2017*

**Math, Algebra, **

Help! I can't understand or find out the answer, I tried but I keep getting lost! George rides a cab to work 3 days a week. He pays $3.50 for the cab to pick him up. He pays an additional fee for each mile driven. In one week, George paid $35.25. If he rides 11 miles each ...

*January 11, 2017*

**Math**

In a triangle ABC,AB=5cm,BC=12cm,angle ABC=90Â°calculate 1)the length of AC. 2)the area of the triangle 3)the length of the perpendicular from B to AC

*January 11, 2017*

**Math, Algebra**

Can you please help me! I solved it, but I'm not sure if I'm right. ------------------------------ Paulo pays $45.99 per month for unlimited calls, with additional charges for text messages. His bill for 4 months is $207.96. If he sends 100 texts each month, how much ...

*January 11, 2017*

**math**

Hoshi walks10 meters in 3 seconds.what is her rate.

*January 11, 2017*

**Social Studies**

is number 2 a or d?

*January 11, 2017*

**Social Studies**

Is that right ?^^

*January 11, 2017*

**JUST PLAIN EASY**

JNISGKDHTA IHS ANWHEMSHOGMTE ANM IG WJRNOGNUG Rule: every other letter start at the beginning at each word

*January 11, 2017*

**Social Studies**

ABD is right

*January 11, 2017*

**math**

1. In the middle of the page, draw two vertical lines an inch long, an inch apart, and that are parallel to each other. 2. About a half inch below the lines, draw a half-inch horizontal line that is centered between the lines. 3. Draw a line from the bottom of the left ...

*January 11, 2017*

**Social studies**

*not @Reed

*January 11, 2017*

**math**

A number X is 3 times greater than the number Y, and Y is 3 times greater than Z. If the sum of Y and Z is equal to 50, what is the value of X? Please show working out, thanks.

*January 11, 2017*

**math;););)**

Apply the 57-degree counterclockwise rotation about the origin to the vectors [1, 0] and [0,1], then use the image vectors (written as columns) to form the coe cient matrix M for the rotation. Test M by calculating the products M[1] [0] and M[0] [1 ]. Where does this rotation ...

*January 11, 2017*

**Math;);)**

Use the vector form of the Law of Cosines to show that |u + v|^2 ? (|u| + |v|)^2 holds for any vectors u and v. What does this prove?

*January 11, 2017*

**Math**

2.75 times 2 .5 times 11

*January 10, 2017*

**math**

A teacher from Anderson Middle School printed k nametags in preparation for the science fair. Half of the nametags were given out to students and 100 nametags were given out to parents. Three-fifths of the remaining nametags were given out to teachers and contests judges. How ...

*January 10, 2017*

**Earth science **

Most of the sand that makes up the sandstone found in New York State was originally deposited in which type of layers?

*January 10, 2017*

**math;);)**

wait actually is it divide by 7 or 8? shouldn't it be 7?

*January 10, 2017*

**math;);)**

ok thx

*January 10, 2017*

**math;);)**

During one term in Math 310, Min Lee took seven tests, the last of which carried twice the weight of each of the others when averages were computed. Min’s test-score vector for the term was [84,78,91,80,72,88,83]. Show that Min’s final average, a weighted average, ...

*January 10, 2017*

**Math**

The area of a playground is 50 yd^2. The width of the playground is 5 yd longer than its length. Find the length and width of the playground.

*January 10, 2017*

**Math**

922

*January 10, 2017*

**Chemistry**

why is a solution of copper sulfate and sulfuric acid required in corrosion testing? Won't the protons and the positive ions adhere to the metals surface and contaminant it?? Just a curious q. Thanks!

*January 10, 2017*

**Science**

What's pyramid of biomass?

*January 10, 2017*

**Math**

100% thanks Emo Girl!!!

*January 10, 2017*

**Algebra**

Find the sum of the odd integers from 1 through 49.

*January 10, 2017*

**language arts**

This semester you read several memoirs, including pieces by Ernesto Galarza and Russell Baker. Return to “Barrio Boy” and “No Gumption” now. How are these two memoirs similar? How are they different? In what ways are the authors’ choices and depictions...

*January 10, 2017*

**EmberShy**

1. What is the product of (-6.8)^2? Is the answer 46.24?

*January 10, 2017*

**Physics**

An airplane travelling north at 400 m/s is accelerated due east at a rate of 50m/s^2 for 6 seconds. If the effects of air resistance and gravity are ignored, what is the final speed of the plane? My working: v=vo+at where a=50m/s Vo = 400 m/s t = 6s thus: Vo=400+50(6) =700m/s ...

*January 10, 2017*

**geometry**

42 ka vargmul kya hota hai

*January 10, 2017*

**math**

Christin's age is equal to three times her age in 3 years' time minus three times her age 3 years ago. What is her age now? Please explain how you got the answer as well, thanks.

*January 10, 2017*

**math**

Patel, Quoc and Ron live near each other along the same straight road. Patel lives 0.6km from Quoc. Ron lives 0.4km from Patel. How far apart do Quoc and Ron live? A) They must live 0.2km apart. B) They must live 1.0km apart. C) They could live 0.2km or 1.0km apart. D) They ...

*January 10, 2017*

**physics`**

actually never mind I asked a different website and they responded quicker so I got my answer

*January 10, 2017*

**physics`**

which has more momentum: a snail moving at .001m/s or a 2-ton boulder resting on the ground? why?

*January 10, 2017*

**Math science etc**

Construct a triangle in which BC=5.2 AB-AC=1.2cm and B=60° Also write the construction

*January 10, 2017*

**northwester**

Write 608,000 in expanded form.

*January 9, 2017*

**math**

A farmer collected some eggs from his farm and found b eggs broken. He packed the remaining eggs in c egg cartons. Each egg carton can hold a dozen eggs and no eggs were leftover. Write an algebraic expression for the number of eggs he collected initially in terms of b and c.

*January 9, 2017*

**Science, Chemistry**

A 1050.0 mL solution of NaOH is neutralized by 0.25 L of 2.00M Nitric Acid using Bromothymol Blue as an indicator. The concentration of the NaOH solution is 0.48M. True or False

*January 9, 2017*

**math**

The weight of 2 science fiction books and 1 autobiography is 5/6w pounds. What is the total weight of 4 of these science fiction books and 2 of these autobiographies?

*January 9, 2017*

**math**

if the average daily sales amount for the past 5 days was (2.3q + 1.4) dollars, write an algebraic expression for the total sales amount for the past 5 days.

*January 9, 2017*

**math**

40% of k liters 0.40*kL 0.60*wL 0.40kL + 0.60wL = 1wL is this the correct answer

*January 9, 2017*

**math**

40% of k liters of acid are added to 60% of w liters of water. Write an algebraic expression for the total volume of the solution.

*January 9, 2017*

**Geography**

What geography blocks monsoons?

*January 9, 2017*

**Friend**

Buenos Dias mis amigos hoy está bien frío aquí en Florida! Hoy mi esposo y yo cumplimos 46 años de casados! Translate to English

*January 9, 2017*

**maths**

16 are girls and 1/2 are girls

*January 9, 2017*

**music**

Can you help plz

*January 9, 2017*

**Physics**

the orbital period of the moon is 27.32 days. The international space station has an orbital period of 90 minutes. What is the mean distance between the center of the earth and the center of the international space station? moons orbital radius: 25,201

*January 9, 2017*

**all**

For highschool what percentages correspond with grade letters. like is a 91% an A, A-, or A+

*January 9, 2017*

**health**

I never said I was suicidal

*January 9, 2017*

**health**

I already reported it

*January 9, 2017*