Thursday

July 31, 2014

July 31, 2014

Total # Posts: 2,604

**math**

If the radius of a circular wave is increasing at 2 meters/sec, how fast is the area changing when the radius is 5 meters?

**science**

what are three states of matter

**Physical Science**

A sedan weighing 4000 pounds travelling at 30mph collides head on with a compact car weighing 2000 pounds and travelling in the opposite direction at 45 mph. What is the resultant velocity of the combined vehicles?

**Math**

Thank you so much Ms.sue your a life saver!!!

**Math**

I'm trying to find the height of the rectangular pyramid

**Math**

The volume of it is 1125 cubic inches, the length is 18 inches, and the width is 15 inches. Can you also show me how to do because I have a test on it Monday. Thanks!

**math**

the pet shop owner told Jean to fill her new fish tank 3/4 full with water. Jean filled it 9/12 full . what fraction of the tank does Jean still need to fill?

**history**

When the First World War ended, Americans welcomed what they hoped would be a “return to normalcy.” The decades that followed, however, are ones which would rarely be described as normal, in comparison to what came before or after. During these decades, a struggle en...

**Science**

Solution preparation: 500ml's of .2M Sodium Cacodylate Buffer with a pH of 7.4 I don't even know where to start, could someone please tell me how to do this problem.

**life orientation**

Air pollution is one such environmental problem that causes ill health,accidents,crises(and disaster within any community within South Africa or globally)

**math**

You add 3/4+3/4+2 to get your answer

**math**

Paid $750 if u multiply 2.50 and 300. Then I multiply 750 and get 225. Fo I subtract that from 750 and get 525 or is it the snswer $225?

**math**

Ok but I dont knoe how to do it

**math**

I'm so confused on how to do it

**math**

I need help!!! Whats the name of the other person you did it to?

**math**

Miriam orders a shipment of 1500 pounds of ice for her supermarket. The ice comes in individual 5 pound bags that cost Miriam orders$2.50 each. Miriam sells the bags for 30% more than her cost. How much profit, in dollars, will Miriam's supermarket earn from the sale of 1 ...

**math**

Ok this is what I did. 5÷1500 got 300. Took 300×2.50 got 750. Subtracted 120-36 got 84. Then, I took 750×.3 and got $225. Ibdon't know if thats the answer or what. This is just confusing.

**trigonometry**

what are the solution sets to x^5-2x^3+x=0 and how do you get them?

**math Statistics**

Suppose that 33 out of 300 selected american drivers read the newspaper while driving. what percent of sample proportions are greater than this?

**Basketball Current Event**

Do you go to Helen Bernstein? Apex? I think I know you

**Math**

IDK but I'm not in eight grade, YET!! Comment, share, and love My pro in Facebook. Find me as Jessi Vertiz

**math**

solve the simultaneous equations; log x base 2-log y base 4=4, log (x-2y)base 2=5

**Math**

40+40x0+1 40+0+1 41

**math**

if log x base a,log y base a and log z base a are three consecutive terms of an AP,show that x,y and z are consecutive terms of a GP

**math**

simplify log squaroot of 2 base 7

**Algebra**

there is no solution

**Algebra**

there is no equal sign.so to what is that equated to

**CHEM**

the equation is already balanced

**chemistry**

C H N MASS 39.97g 13.41g 46.62 #mol 3.33 13.41 3.33 ratio 1 4 1 empirical formular CH4N empirical mass 30 (CH4N)2=C2H8N2 THUS THE MOLECULAR FORMULA

**math**

20 cups

**Physics**

A block of mass 17.9 kg supported by a vertical massless cable is initially at rest. The block is then pulled upward with a constant acceleration of 2.01 m/s2. What is the tension in the cable? What is the magnitude of the net force acting on the mass? What is the speed of the...

**Math**

SIMPLY MULTIPLY THE 8 HOURS BY 7 DAYS WHICH GIVES 56

**Science**

What is the percent of fresh water and salt water?

**Easy Math **

I am confused on how to do this ? ! Jeff is a salesperson in a retail store and earns $52 per week plus 13% of his weekly sales. If Jeff made $312 one week, what were his sales that week?

**Chemistry**

CONCENTRATION OF NaClO IN COMMERCIAL BLEACH. Bleach comes as 6%(mass/volume) solution of NaClO. Calculate the Molarity of NaClO in bleach to three significant figures ( you need molar mass of NaClO)

**College Algebra**

Hello - I am stuck on this problem and I'm in serious need of some help. I don't understand this question at all. The problem is: Find the equilibrium quantity and equilibrium demand function for the given: Supply: P=45q Demand: P=q^2+10,000

**math**

Find the % of Discount Regular Price $25,000 Sale Price $22,000

**math**

Find the % of Discount Regular Price $90 Sale Price $22.50

**math**

1 ten

**math**

Find the % of Discount Regular Price $125 Sale Price $100

**math**

Find the % of Discount Regular Price $125 Sale Price $100

**math**

thanks Ms. Sue!!!

**math**

Find the % of Discount Regular Price $72 Sale Price $60

**Physics**

Maria throws an apple vertically upward from a height of 1.3m unit an initial velocity of velocity of 12.4m/s 1. will the apple reach a friend in a tree house 5.3m above the ground. 2. If the apple is not caught, how long will the apple be in the air before it hits the ground.

**Physics**

Stephanie hits a volleyball from a height of 0.80m and gives it on initial velocity of 17.5m/s straight up 1. How high will the volleyball go? 2.how long will it take the ball to reach its maximum height?

**math**

suppose that denise had doubled the number od trays of chocolate chip and oatmeal raisin cooies she bakes.How many trays of cookies would she have baked?

**PHY 171**

How does a derivation differ from an experiment or theory?

**Physical Science**

I studied this 2 years ago in college and am no back in school. I can't remember any of this stuff and I really need to figure it out. Please Help Me!! The Latent Heat of Vaporization for water is 540. cal/g. How much heat (in calories) must be added to 10.0 g of water at ...

**Math**

Please explain to me how I can do this .Sarah works in an appliance store. She gets a commission in addition to her hourly pay. She earns a 4% commission for sales up to $4000 and a 7% commission for all sales in a month above $4000. Last month her sales were $5300. How much w...

**Simple Math**

Two eight-sided number cubes are thrown. Given that one of the cubes shows a five, what is the probability that the sum of the numbers that come up on the two cubes is six?

**Simple Math**

A drawer contains 8 red socks, 4 white socks, and 2 blue socks. Without looking, you draw out a sock, return it, and draw out a second sock. What is the probability that the first sock is white and the second sock is blue?

**social studies**

i tried that and an article did not show up

**social studies**

Where could I find an article about gun control?

**math**

divide 775 by 3

**Math**

yes.

**Math**

divide 200 by 120 to get your answer

**Math**

divide 200 by 120 to get your answer

**Business English**

it is

**Algebra**

you take .80and mutiply by 99, then take that answer and subtract it from 99

**Algebra**

$80.19

**English 8R - help!**

I have.

**english communication**

it is right

**Math 8R - HELP!**

yeah.you are right.

**Math 8R - HELP!**

gtg

**Math 8R - HELP!**

that is not right what grade are you in bobpursley?

**Math 8R - HELP!**

2x0=0 5x=-3 what is x?

**Math 8R - HELP!**

you take 2 times 0 to get rid of the y, then you have 5x= negative three figure out x or else you are never going to learn. Is this due tomorrow?

**Math 8R - HELP!**

you have it right so far

**science**

Where can I find an article about the flu virus?

**math**

sorry i meant sphere

**math**

cylinder

**math**

What is the formula for volume?

**Social Studies**

no!!!! about gun control!!!

**Social Studies**

I didn't mean specific states, Einstein

**Social Studies**

I meant for the US, smart one!

**Social Studies**

Where can I find a National News Article?

**Logarithms (math)**

how do you solve for x 3.4e^(2-2n)-9=-4 I don't know what is the step by step process. Help please!

**Visual Basic**

if u didnt figure out...you have to reduce the fraction

**Visual Basic**

what does IntTemp and IntRem mean? and whats wrong with my code, i dont know whats wrong with it... Code below: Dim intNum As Integer 'the numderator is read as a whole number. Dim intDenom As Integer 'the denominator is read as a whole number. Dim inttemp As Integer D...

**Math 6th grade**

9/4

**Chemistry**

Theres an airplane with a mass of 5.4g, 305. mm long, moving at 1.8m/s. Is it classic or quantum?

**Chemistry**

i dont understand...

**Chemistry**

How many grams of AgNO3 (silver nitrate) are contained in 425 mL of a .15 M solution of AgNO3?

**Chemistry**

how would a dilution be performed, starting with a concentration .50 M Cacl2 solution, to obtain 250ml of a .060M solution?

**Chemistry**

how would a dilution be performed, starting with a concentration .50 M Cacl2 solution, to obtain 250ml of a .060M solution?

**chemistry**

describe how you would prepare 500 mL 0.250 M ethylene glycol (MW=62.07) from concentrated 31% (w/w) solution that has a density of 1.0350 g/mL

**chemistry**

describe how you would prepare 500 mL 0.250 M ethylene glycol (MW=62.07) from concentrated 31% (w/w) solution that has a density of 1.0350 g/mL

**PHYSICS (most is worked)**

A glass ball, ball A, of mass 6.0 g moves at a velocity of 18.0 cm/s. It collides with a second ball, ball B, of mass 8.0 g, moving along the same line of velocity of 11.0 cm/s. After the collision, ball A is still moving, but with a velocity of 10.0 cm/s. Ball A's origina...

**Chemistry**

Using chemical equations, show how the triprotic acid H3PO4 ionizes in water. Phases, such as (l) or (aq), are optional.

**Chemistry**

Write the equation for the reaction associated with the Ka2 of sulfuric acid, H2SO4. Write the equation for the reaction associated with the Kb2 of carbonate, CO32–.

**math**

thank you

**math**

i meant a

**math**

is it F.

**math**

Which of the following problems can be solved using the equation x-9=15? A. Allison is 9 years younger than her sister Pam. Allison is 15 years old. What is x, Pam's age? B. David's portion of the bill is $9 more than Jaleel's portion of the bill. If Jaleel pays $9...

**physics 2**

A charge, q1, of +4.4 micro-coulombs and another unknown charge, q2, are surrounded by a surface. The total flux through the surface is -9.2 x 106 (N m2)/C. These charges are now placed on the x axis. q1 is placed at x = 0, and q2 is placed at x = +114.51 cm. What is the magni...

**Mathh**

Thank you :)

**Mathh **

19-(3-x) = 5x. Can u show your work please? I know how to solve questions like these but couldnt figure it out with that x after the 5 '

**chemistry**

if a 3.72 gram sample of nitrogen occupies a 2.50 liter container at 1.08 atm, what is the temperature in Celcius?

**chemistry **

a racing tire has a pressure of 148 kPa at 19 degrees Celcius. What willthe pressure be at 42 degrees Celcius, assuming the volume remains the same?

**chemistry**

what is the mass of the precipitate formed when 45.0 milliliters of .250 M barium chloride solution reacts with 2.00 grams of copper(II) sulfae pentaydrate?

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