Monday

January 23, 2017
Total # Posts: 104,209

**Math**

AB ☍ CD

*January 9, 2017*

**Physics**

mgH=mv²/2 v=sqrt(2gH) F=?p/?t= ?(mv)/ ?t=m ?(v)/?t= =m[sqrt(2gH)-0]/?t= m[sqrt(2gH)]/ ?t

*January 9, 2017*

**mosab bin omair**

The answer is 0.038. Substituting into the equilibrium expression, you have K = (0.013*0.0001)/(0.000034)

*January 9, 2017*

**Algebra - Solving Systems by Elmination**

3x + 8y = -5 -2x + 2y = 18

*January 9, 2017*

**math**

Please help with this test, I was out of school for awhile due to my dad passing away from heart and kidney failure. I'm trying to catch up on missing work and get good grades to make my mom happy and every time I ask my teachers for help with this test they really don'...

*January 9, 2017*

**Social Studies Abolitionism Quiz**

Who was the publisher of The Liberator?

*January 9, 2017*

**Social Studies Abolitionism Quiz**

Based on this early illustration of the town, what is one reason why Francis Lowell's partners might have chosen this area to build the factory town of Lowell?

*January 9, 2017*

**CHEMISTRY URGENT**

1. You have been given a sample of unknown molarity. Calculate the molarity of a solution which has been prepared by dissolving 8.75 moles of sodium chloride in enough water to produce a solution of 6.22l. 2. You have a sample which consists of 428g sodium hydroxide (NaOH) ...

*January 9, 2017*

**math**

Uncle Bill is 6 times as old as John and he will be 4 times as old as John in 4 years' time. If Uncle Bill is less than 60 years of age, how old will he be in 6 years' time? Please show working out as well, thanks.

*January 9, 2017*

**math**

A 2m wide path is built around a 20m square swimming pool. The distance around the outside of the path will be: A) 96m B) 48m C) 92m D) 56m Also, please explain how you got the answer, thanks.

*January 9, 2017*

**math**

Oh, ok, thanks.

*January 9, 2017*

**math**

Lee bought 8 T-shirts for $2.32 each and sold them for $5.18 each. How much money did she make?

*January 9, 2017*

**Math**

Which pair of ratios does not form a true proportion? A 8:14â€“20:35 B 6 to 10 and 15 to 25 C 9/5 equals 27/15 D 12:15 and 30:50

*January 8, 2017*

**physics**

oh! ok thanks

*January 8, 2017*

**physics**

But that doesn't make sense because an apple can't make the earth move, even a little.

*January 8, 2017*

**physics**

when an apple falls from a tree, and strikes the ground without bouncing, what happens to its momentum?

*January 8, 2017*

**Science **

Wolves: Moose: 6 10 3.Calculate the average of moose killed by one wolf in each territory. So, would I divide the number of moose by wolves, or wolves by moose?

*January 8, 2017*

**math**

A scientist observes two colonies of bacteria. The first grows at a rate of 2.2 x 10^6 bacteria per hour. The other grows at a rate of 6.3 x 10^5 bacteria per hour. Which grows faster? How do you know?

*January 8, 2017*

**Math**

At one afterschool event, of the students were 8th graders and the rest were 7th graders. Of the students who were in 7th grade, the ratio of boys to girls was 3:5. What percent of all the students at the afterschool event were boys who are in the 7th grade? Help plz

*January 8, 2017*

**physics **

when temperature increases from t to # t and the moment of inertia is increase from I to #I. the coefficent of linear expansion is alpha .THE RATIO OF #I\I IS

*January 8, 2017*

**Maths**

PQRS is a rectangle, whose diagnols PR =2x + QS=3x+1.Find the value of x

*January 8, 2017*

**Account _trial bal**

Goods return from debtors come in which account debit or credit

*January 8, 2017*

**English **

Help me write a hyperbole poem

*January 7, 2017*

**Physical science**

What was Jack's speed from 5 sec to 10 sec

*January 7, 2017*

**math**

With 300 dollars one will have to buy total 30 items. If price of a exercise book is 30 dollars, price of pen is 24 dollars and price of a pencil is 6 dollars, and if that person is bound to buy at least one of each item, how many exercise books, how many pens and how many ...

*January 7, 2017*

**stiochemetry**

what mass of silver nitrate is needed to prepare 100cm3 of silver nitrate solution, concentration 0.2mol/dm3? the mass of one mole of silver nitrate is 170g

*January 7, 2017*

**accounting**

Revenue is traditionally recognized in the accounting records when A. cash is received. B. services are rendered. C. itâ€™s incurred. D. None of the above

*January 6, 2017*

**Math**

Need to build a rectangular garden on an area of 8,000 sf. What are the dimensions?

*January 6, 2017*

**Physics**

Find the specific heat of an unknown metal given this data: Mass of the metal = 120 g Temp of the metal = 220 degrees Mass of the water = 30 g Initial Temp of the water = 20 degrees Final Temp of the water = 85.6 degrees Specific Heat of the water = 4.186 J/gram C I get 0.51 J...

*January 6, 2017*

**American Government**

For Q3, it might help to look up a graph for public debt over the years.

*January 6, 2017*

**language arts**

what do these lines most likely reveal about grandma sands?????!!!!! plese answer!!!!!!!!!

*January 6, 2017*

**Math**

One third of a number divided by itself gives 1/3. Find the number.

*January 6, 2017*

**Stem**

Calculate the pH of the solution resulting from the addition of 20.0 mL of 0.100 M NaOH to 30.0 mL of 0.100 M HNO3. (a) 1.35 (b) 1.70 (c) 1.95 (d) 2.52

*January 6, 2017*

**Math**

The average of third number is 29 if the average of two number is27 .find the third number ?

*January 6, 2017*

**chemistry**

Metal carbonates => Metal Oxides + Non-metal oxides Ammonium Carbonates => Ammonia (gas) + Water (gas) + Carbon Dioxide (gas)

*January 5, 2017*

**Chemistry**

Single Replacement Oxidation Reduction Rxn Zn(s) + 2HCl(aq) => ZnCl2(aq) + H2(g)

*January 5, 2017*

**Chemistry**

Without aluminum, zero moles. You also need to include molarity of sulfuric acid.

*January 5, 2017*

**calculus**

f'(-2) if F(x)=g(h(x))

*January 5, 2017*

**Math **

If a boy run at the rate of 10km/h then whow long will he take to cover a distance of 450 m

*January 5, 2017*

**Math**

I am a polygon. The sum of my angles equals 180. I have two sidesthat are congruent. What am I?

*January 5, 2017*

**math**

51 is the product of Rhonda's age and 3.

*January 5, 2017*

**Math**

One of the largest pumpkins ever grown weighted 4/5 ton. About how much did the pumpkin weight.

*January 5, 2017*

**Math**

One of the largest pumpkins ever grown weighted 4/5 ton. About how much did the pumpkin weight.

*January 5, 2017*

**physics**

Oh okay. Thank you very much bobpursley. I was forgetting so use sin and cos. I was trying to solve the problem just using numbers. Thank you for the help and helping me to see my mistake.

*January 5, 2017*

**physics**

Can someone please help me? I am having a really hard time with physics. This is not a test question. It is a practice problem from a review website I am supposed to use, but I am having a really hard time. Can someone at least help me to begin setting up the problem? I would ...

*January 5, 2017*

**math**

There are technically 2 different ways that you could go about solving this problem. The first option is definitely the easier way to solve this problem because it is completely visual - unless you prefer to solve things algebraically. The first way to solve this problem would...

*January 5, 2017*

**math **

The angle of elevation of the top of a building from a point 10m away in level ground is 30.calculate the height of the building

*January 5, 2017*

**Career**

South Africa, English first additional language is a subject and that level 3 is the level that I have obtain in English first additional language.

*January 5, 2017*

**calculus**

how do i get the answer for this limit limit x to 0 (4^2x-1) without using direct substitution my work so far is limit x to 0= (4^2x-1) = (4^2x/4^-1) is it correct?

*January 5, 2017*

**Math **

If frank earned in a simple interest for oneyear on an investment of 9000 .what annual rate of interest was paid

*January 5, 2017*

**math**

Consider a box that contains 14 red balls,12 blue balls and 9 yellow balls.A ball is drawn at random and the color is noted and then put back inside the box.Then,another ball is drawn at random.Find the probability? a.both are blue b.both balls are yellow c.the first is red ...

*January 5, 2017*

**Chem**

Oh I got C and H = to 2.71

*January 4, 2017*

**Chem**

Find the empirical formula of a compound found to contain 63.15 percent carbon 5.30 percent hydrogen and 31.55 percent oxygen I got C27H27O

*January 4, 2017*

**social studies**

If I were in Antarctica during the winter will it be warmer in summer

*January 4, 2017*

**American Government**

1. A, B, D, E 2. C 3. D

*January 4, 2017*

**American Government**

In our New England state we have for example Essex County. It contains the City of Gloucester and other cities as well as towns like Rockport, Manchester by the Sea, Hamilton.....

*January 4, 2017*

**American Government**

my answer to 3 would also have been A

*January 4, 2017*

**American Government**

cities have mayors, counties do not

*January 4, 2017*

**Physics**

velocity ratio of 5 implies a distance ratio of 5 5 * 0.40 m = 2 m work done by arms = 60*2 = 120 Joules work done by lift on mass = 25*9.81*0.20 = 49.05 Joules loss in energy = 120 - 49 = 71 Joules

*January 4, 2017*

**mathematics**

Solve the equation: 4x squared-24=16x,4x-12(12raise to the power of x)+32=0

*January 4, 2017*

**mathematics**

To what value does the sum 20+12+36/5 tend as n.I really don't have any idea.

*January 4, 2017*

**am I right ? or no?**

i am not correct

*January 4, 2017*

**am I right ? or no?**

try it on your calculator :)

*January 4, 2017*

**am I right ? or no?**

.99999....^t ---> smaller and smaller 1.000001^t ---> bigger and bigger

*January 4, 2017*

**Health**

I'm not telling youuuuuu

*January 4, 2017*

**Health**

i know them but.

*January 4, 2017*

**Health**

1. D 2. A 3. A I stil don't know the rest! HELP MEEEEEEEEE

*January 4, 2017*

**Maths**

If a wire is bent into a square ,it's ara is 49cm2. If it is bent into a semi -circle , what will be its radius

*January 4, 2017*

**Math**

I bought three times as many erasers as pens and spent $155 in total. I spent $65 more on the pens than the erasers. Given that 's pen cost $1.90 more than an eraser, find the cost of a pen.

*January 4, 2017*

** Algebra**

23 is subtracted from 4 times of a number the result is equal to 1/3 of 54.Find the number?

*January 4, 2017*

**physics**

A small tiny nail may Pierce an inflated Tyre and remain there without pressure reduction.explain

*January 4, 2017*

**physics**

zero If there is no motion, no work is done.

*January 4, 2017*

**Math;);)**

please guys I need help I am stuck on this problem

*January 4, 2017*

**Math;);)**

Show that there are at least two ways to calculate the angle formed by the vectors [cos 19, sin 19] and [cos 54, sin 54].

*January 4, 2017*

**Physics, math, algebra**

How long will it take a sled to reach the bottom of a hill, if it accelerates at 5.60m/s^2 and has a final velocity at the bottom of the hill of 42.3km/h?

*January 3, 2017*

**Math**

Write a division equation that has a solution of -9/14

*January 3, 2017*

**Physics11 A**

No I haven't yet. How far along are you on it?

*January 3, 2017*

**Physics11 A**

Hi, I'm in the same physics class as well and need help with it too. I'm lined up to get help from a tutor. Did you complete it yet?

*January 3, 2017*

**Physics11 A**

I am not asking for answers. I am asking for help on my school work, which is exactly what this website is for. It's alright if you can't help me though. Thanks for the concern anyhow!

*January 3, 2017*

**Physics11 A**

CA students help! Did anyone do the Conservation of Mechanical Energy Lab in Unit 3 Lesson 3? I am very confused on what to do or how I would write a report on it. Please help!

*January 3, 2017*

**Math**

Asked to simplify the expression sin(180Ã¢Ë†â€™ÃƒÂ¨), Rory volunteered the following solution: sin(180Ã¢Ë†â€™ÃƒÂ¨) = sin 180Ã¢Ë†â...

*January 3, 2017*

**biology**

Nvm I see you put where it says one point lol

*January 3, 2017*

**biology**

Did you get all of these right?

*January 3, 2017*

**biology**

1. The table in Figure 12-3 showes the results of measuring the percentages of the four bases in the DNA of several different organisms. Some of the values are missing from the table. Based on Chargaff's rule, the percentages of guanine bases in chicken DNA should be ...

*January 3, 2017*

**math**

Okay thank you!! the signs confused me

*January 3, 2017*

**math**

7x-3x = 4x

*January 3, 2017*

**math**

How did you get 4x

*January 3, 2017*

**math**

7x-4-3x=2x+10

*January 3, 2017*

**math**

dont know mate

*January 3, 2017*

**Math**

why 573.7

*January 3, 2017*

**Math**

Two stores carry a similar stereo for the same original price of $573. One store offers a 16% discount and the second store sells the stereo for $458.40. Which store gives the bigger percent discount? Justify your answer.

*January 3, 2017*

**Math**

Alright Ms. Sue chill out- no need to be calling anyone names here. Thought you were all about being a positive influence to people? There is a nice way to talk to people and encourage them to find the answers on their own, and that's not it. She's a 6th grader, and ...

*January 3, 2017*

**Physics **

when tuning a piano, amusician plays a note that should be at 110Hz while at the same time tapping a 110Hz tuning fork and holding it next to the strings. He hears beats at 4Hz. (A) state and explain what frequencies the piano could be producing (b) explain how the musician ...

*January 3, 2017*

**Math**

The difference between two whole numbers is 15. One of the numbers is 1. There are two possibilites for the second number. What are they?

*January 3, 2017*

**Science**

Depletion of what has been halted by a ban on the manufacturing of what

*January 3, 2017*

**English 6th**

Dissection sentences according to part of speech

*January 3, 2017*

**Math**

f(x)=(1+x)/(1-x),g(x)=x/(1-x), find the simplest form of f[g(x)] and state the domain. My work: (1+ (x/(1-x)))/(1-(x/(1-x))) (1+x)/(1-x)/(1-x)/(1-x)

*January 3, 2017*

**math coordinate geometry**

Find the 3rd vertex of a triangle ABC.If 2vertices are A(-4,3),B(4,3)and its centroid is at orFind. Find 3rd.

*January 3, 2017*

**Math**

B and 19-B B+2 = 2(19-B) B+2 = 38 - 2 B 3 B =36 B = 12 then 19-B = 7

*January 3, 2017*

**math**

the difference between two whole number is 26 and one number is three times the other then the smaller number is..........my work x-y=26,3x_y=26

*January 2, 2017*