Thursday

April 24, 2014

April 24, 2014

Total # Posts: 180

**Math**

A vendor at a concert sells new and used CDs. The new CDs cost 2.5 times as much as the old CDs. If 4 used CDs and 9 new CDs cost $159, what is the price of each item?

**Urgent Calc Help!!! Thanks!**

Find the absolute maximum and absolute minimum values of f on the given interval. f(x) = xe^((−x^2)/98), [−6, 14]

**World Geography**

Founded in 1967, ASEAN did little to foster economic cooperation until proposed a free-trade area in 1991

**physical science**

what is the velocity of ironman if he travels up 2,000 meters in 8.6 seconds

**english 4**

Harry's father is seattle's wealthiest citizen?

**Maths**

Find out X 25^x=1/^3square root 5 27^x+5=9^2x-1 8x16^x-1 =4^3x

**Physics**

Nevermind I got it.

**Physics**

An electromagnetic wave in a vacuum traveling in the +x direction generated by a variable source initially has a wavelength of 2.65 x 10^-4 m and a maximum electric field Emax in the +y direction of 8.20×10^−3 V/m. What are the coefficients in the equation for the ...

**Physics mechanics**

A piece of cord 2.5m is connected between two points 2m apart horizontally. A massless pulley is placed on the cord and a force 20N at angle - 80 degrees is applied to it. 1. Show that when the pulley reaches a state of rest, the angle that the positions of the cor make with t...

**Earth Science (Geography)**

In what way can the soils, geology and slopes affect river flow?

**Algebra**

Mary’s yard is a mess. She needs to hire someone to prune her trees and shrubs. A landscaping service she calls quotes her a price of $15 consultation fee plus $8 an hour for the actual work. Mary’s neighbor has offered to help her out. She doesn’t charge a cons...

**algebra**

the printed matter on a 10 by 16 centimeter page of a book must cover 40 square centimeters. if all margins are to be the same width, how wide should they be?

**math**

Describe a method you can use to shorten the list of possible rational zeros when using the rational zero theorem? I know how to do the problems, I just don't know how to shorten that method. Please help me.

**science plz help right now!!!!**

is is a copy of a test

**Math**

what is 8x25x23 in mental math use subtraction

**Math**

Can I get some help with this question please? Calculating break-even. Jasmine Gonzales, administrative director of Small Imaging Center, has been asked by the practice members to see if it is feasible to add more staff to support the practice’s mammography service, which...

**Math**

Ned’s Sheds purchases building materials from Timbertown Lumber for $3,700 with terms of 4/15, n/30. The invoice is dated October 17. Ned’s decides to send in a $2,000 partial payment. By what date must the partial payment be sent to take advantage of the cash discount?

**math**

How would I figure out a random tile grid pattern for a room that is 25'1" in length and 12'7" in width with tile that is 16"x16" and 12"x12" with the majority being 12"x12"?

**math**

what is the ratio 7.5 to 3.25 in lowest term?

**life orientation**

Identify and describe 3 environmental health hazards that cause ill health,crises and disasters within any other community within south africa and globally

**physics**

a player kicks a soccer ball from ground level and sends it flying at an angle of 30 degrees at a speed of 28 m/s. what is the maximum height attained by the ball? Round the answer to the nearest tenth of a meter.

**consumers math**

Jon put 1000$ into each of two different simple interest savings accounts for one year . The total intrerest earned was 5$. What could the interest rate have been for each account ?

**Chem**

If 7.60 kJ of heat is needed to raise the temperature of a sample of metal from 10.°C to 25°C, how many kilojoules of heat will be required to raise the temperature of the same sample of metal from 35°C to 53°C?

**Chemistry**

If 7.60 kJ of heat is needed to raise the temperature of a sample of metal from 10.°C to 25°C, how many kilojoules of heat will be required to raise the temperature of the same sample of metal from 35°C to 53°C?

**Math 6th grade**

I am having trouble with Input output for this problem, I can't figure out the function rule input x= output y= 2 1 3 0 4 -1 Please Help!

**Math**

Contruct a triangle RST in a way that TR=31 mm, RS=62 mm and angle STR=60 degrees....

**math**

look at the numbers below describe the pattern 75, 74,72,69,65, what is the next two numbers in the pattern

**Language**

Thank you so much Ms. Sue..

**Language**

For each sentence, underline the action verb in the parentheses that creates a more vivid picture. 1. We (sit, lounge) on the big chairs near the pool..I underlined lounge. 2. The horses (go, gallop) across the field. I underline gallop. 3. Minna and Max (gulp, eat) their sand...

**French**

i need help with the answers ! i know one is j'ai mal aux yeux. i need help with the rest this is my last assignment until january.

**French **

In this assignment, you are going to say what part of the body hurts you after reading the sentence that is there. Ce devoir vaut 20 points. Tu as vu la télévision pendant 5 heures. Tu as mangé beaucoup de chocolats. Tu as bu beaucoup d'eau aprè...

**math**

Adult tickets for a play cost $19 and child tickets cost $10. If there were 35 people at a performance and the theatre collected $476 from ticket sales, how many adults attended the play

**math**

(2x-3y)(2y+3x)

**fundamental of electricity**

{[(20+5)//10ohms]+5ohms}//10ohms

**math**

When stacking bags of dog food, the heaviest items should be placed at the bottom. Starting at the bottom, in what order should bags of dog food weighing 25 pounds, 20 pounds, 30 pounds, and 28 pounds be stacked?

**Neoclassicism I english 11**

these are the only anwsers i need on my final to graduate.!!

**Life Orientation**

What are the factors contributing to lack of physical fitness and proper nutrition in the adolescent

**physics**

The acceleration is 9.8m.s

**math**

an oil drum is 8ft high and 2 ft in diameter if the drum is half full how much is in cylinder. please show explanation

**Leadership**

Rising Cost of Health Care

**Chemistry**

Calculate the amount of energy required to change 32.8 grams of BF3 from -32 degrees celsius to 56 degrees celsius.

**math**

84.m 3

**chemistry**

redox reaction..types of redox reaction and explain

**chemistry**

consider the following equilibrum reaction: 2NO yield N2 + O2. Take:delta H=-18.0KJ/M

**chemistry**

consider the following equilibrum reaction: 2NO yield N2 + O2. Take:delta H=-18.0KJ/M

**chemistry**

balance the equation: Io^3 + I yield H2O + I^2

**chemistry**

the reaction is: 2NO yield N2 + O2

**chemistry**

state and explain how the concentration of nitrogen gas would be affected by an increase in pressure

**chemistry**

state and explain how the concentration of nitrogen gas would be affected by an increase in pressure

**chemistry**

state and explain how the concentration of nitrogen gas would be affected by an increase in temperature

**chemistry**

under rate of reactions Fe^2+ + Cr2o7^2- » Cr^3+ +Fe^3+

**chemistry**

rate of reactions Fe^2+ + Cr2O7^2- » Cr^3+ +Fe^3+

**chemistry**

solve under rate of reaction: 1)Mno4^- + Fe2^+=Mn2^+ + Fe3^+

**chemistry**

solve under rate of reaction: 1)Mno4^- + Fe2^+=Mn2^+ + Fe3^+

**chemistry**

solve under rate of reaction: 1)Mno4^- + Fe2^+=Mn2^+ + Fe3^+

**math**

a student misses 2 days of school out of 25 days. what is the probability that the student will be absent on the 26th day of school

**agricultural science**

examples of planted in an acidic soil and examples of crops planted in an alkaline soil

**chemistry**

using a litmus paper only,how would you distinguish between HN4 and NaCl

**chemistry**

how can H2O and ethanol be seperated

**chemistry**

how can sand and iodine crystals be seperated

**chemistry**

state what will be observed on heating Pbco^3

**MATH ( ms. sue)**

i understand you divide 56 by 15 but it comes out to 3.733333333 and i don't understand how to convert that into 3 11/15

**math HELP**

How would I change the improper fraction 56/15 to mixed number in lowest terms? the problem is 2 2/3 x 1 2/5 Ive figured out how to get to 56/15 but get stuck finishing it... MULTIPLYING WITH MIXED NUMBERS

**Math**

bu ne lan boyle

**chemistry**

why is AgNO3 stored in an amber bottle

**Chemistry**

what is the concentration of hcl when 55 ml of this hcl solution neutralize 15ml of .9m ca(oh)2

**Statistics**

4.1

**chemistry**

6.0g of impure and hydrous Na2SO4 were made up to 1dm^3 of solution neutralize 22.20cm^3 of 0.1mol/dm^3 of HCL.calculate: a)concentration of Na2CO3 in mol/dm^3. b)concentration of Na2CO3 in gram/dm^3. c)percentage purity in carbon.

**chemistry**

6.0g of impure and hydrous Na2SO4 were made up to 1dm^3 of solution neutralize 22.20cm^3 of 0.1mol/dm^3 of HCL.calculate: a)concentration of Na2CO3 in mol/dm^3. b)concentration of Na2CO3 in gram/dm^3. c)percentage purity in carbon.

**biology**

experiment to show that heat is given out during aerobic respiration?material needed,method/procedure,observation and conclusion

**chemistry**

what volume of dry hydrogen chloride gas at s.t.p will dissolve in 250cm^3 of water to produce a 0.05M solution of water

**physics**

a force acts on a body 0.5sec changing its momentum from 16.0kg to 21.0kg.calculate the magnitude of the force

**physics**

a velocity is the rate of change of displacement with time

**physics**

what is velocity

**chemistry**

what is molar concentration of a solution obtained by dissolving 560cm of hydrogen chloride gas at s.t.p in 92.5cm of water

**physics**

an object of mass 1kg falls a distance 5m on a horizontal surface and bounce to a vertical height of 2m.calculate the change in momentum

**science**

false.not all mixtures

**physical science**

a soccer player kicks a ball straight up into the air at 6 m/s.ignore air resistance.what is the velocity of the ball at its highest point?

**physical science**

a soccer player kicks a ball straight up into the air at 6 m/s.ignore air resistance.what is the velocity of the ball at its highest point?

**physical science**

a soccer player kicks a ball straight up into the air at 6 m/s.ignore air resistance.what is the velocity of the ball at its highest point?

**math**

The number is 381654729 because 381654729 / 9 = 42406081 38165472 / 8 = 477068 3816547 / 7 = 545221 381654 / 6 = 63609 38165 / 5 = 7633 3816 / 4 = 954 381 / 3 = 127 38 / 2 = 19 3 / 1 = 3

**math **

plz help me understand this 1.) 6x - 3y = 6 2.) y= -2/3x +4 y= 2x + 5 2x + 3y = -6 3.) x+y=0 4.) 3x - 4y = -5 x=y+4 x = y+2

**thermal energy**

A hot 0.25-kg piece of iron is placed in a calorimeter containing room temperature water. How much heat is lost by the iron as it cools from 125 degree C to 75 degree C? I must have the given/work and answer also how much heat is gained by the water

**thermal energy**

how much heat must be absorbed by a 500 g pot of water to raise the temperature from 20 degree C to 30 degree C?

**math**

for each pair of substances, circle the substance with more thermal energy and explain why? A0 500g of water at 35 degree C VS. 500 g of water at 85 degree C B) 500 g of water at 35 degree C VS. 250 g of water at 35 degree C

**math**

A person standing on the roof of a building throws a ball directly upward. The ball misses the rooftop on its way down and eventually strikes the ground. The function s(t) = −16t2 + 64t + 80 describes the ball’s height above the ground, s(t) , in feet, t , seconds a...

**Chemistry**

For the reaction 1 CaCO3(s) + 2 HCl(aq) <==> 1 CaCl2(aq) + 1 H2O(l) + 1 CO2(g) Calculate K, the equilibrium constant, from thermodynamic data at 293 K. (Hint #1: Assume that S and H do not change with temperature.) (Hint #2: Work in J/mol)

**Math**

If interest is compounded monthly at 8% per year for 10 years, explain how to find the number of compounding periods and the interest rate per compounding period.

**calculus**

evaluate the limit 5x^(ln5+1)/(ln8x+1)

**ALGERBRA 2**

rosalyn works no more than 25 hours a week during the school year. she is paid $12 an hour for tutoring geometry and $8 an hour for delivering pizzas for Pizza King. she wants to spend at least 2 hours but no more than 7 hours a week tutoring. find rosalyns maximum earnings.

**Science**

Calculate:what is the density of a metal block that has a mass of 750 grams and a volume of 55 cubic centimeters?

**math**

the chess club has 55 members 22 of them are in 6th grade what percent of the club is not in 6th grade

**critical reading**

1.A powerful general fallacy category is "jumping to conclusions" which consists of a.using humor or ridicule. b. closing an issue before all the evidence is in. c. arguing from ignorance. i think the ans is b.but am not sure. 2.A three step approach to evaluating an...

**critical reading**

thank you so much Ms sue.

**critical reading**

does it mean no 1 is false and no 2 is false.

**critical reading**

pls help me with this question. 1.the premises of an argument are the assertions and the evidence that the author offers in support of the conclusion. true or false. i think is true but an not sure. 2.The factors that influence newsworthiness are based on the needs of the gene...

**critical reading**

can someone pls help me on these question. A three step approach to evaluating and making sense of contemporary issues inclues a. determining what is at issue b. distinguishing among opposing viewpoints and rationale c. expressing your personal viewpoint and rationale d. all o...

**algebra**

How to put this math problem in power point presentation. Evaluate both expressions by using R= 120 and s = 200 : Find the LCD of the terms in the equation.

**Statics**

HELP PLEASE

**Statics**

Total plasma volume is important in determining the required plasma component in blood replacement therapy for a person undergoing surgery. Plasma volume is influenced by the overall health and physical activity of an individual. Suppose that a random sample of 44 male firefig...