Thursday

December 18, 2014

December 18, 2014

Total # Posts: 267

**math**

not to be personal or anything ms sue why do u help on jiskha were u a professor at one point do u know the other professors
*December 11, 2014*

**math**

noel started going to yoga class on november 3, and went every third day after that. Lana also started classes on november 3, and went every fourth day after that. In how many days will they be in class together again?
*December 11, 2014*

**math**

the cost of a midnight madness movie ticket, is reduced by 2/5 of the original cost, to a cost of 3/5c. which expression is equivalent to the new cost? A)c-3/5c B)1-3/5c C)1-2/5c D)c-2/5c
*December 10, 2014*

**Derivative Test( as in the consept) **

Second derivative test to test the critical points
*December 9, 2014*

**Derivative Test**

Consider the function y = 3x5 – 25x3 + 60x + 1. Use the first or second derivative test to test the critical points. How many relative maxima did you find? I got 2 as the relative maxima, is this done correctly?
*December 9, 2014*

**physics**

An egg rolls off a kitchen counter and breaks as it hits the floor. The counter is 1.0 m high, the mass of the egg is about 50 g, and the time interval during the collision is about 0.010 s. How large is the impulse that the floor exerts on the egg? use equations of motion to ...
*December 7, 2014*

**physics**

An airplane traveling at v = 163 m/s emits a sound of frequency 1730 Hz. At what frequency does a stationary listener hear the sound as the plane approaches? Use 340 m/s for the speed of the sound and answer in Hz.
*December 1, 2014*

**physics**

Assume that there is no friction between m2 and the incline, that m2 = 2.4 kg, m1 = 1.2 kg, the radius of the pulley is 0.10 m, the moment of inertia of the pulley is 4.8 kg m2, and θ = 25.0°. a) Find the combined mechanical energy of both masses the instant the ...
*November 26, 2014*

**physics**

Two sounds have measured intensities of I1 = 102 W/m2 and I2 = 408.00 W/m2. By how many decibels is the level of sound 1 lower than that of sound 2? Answer in dB
*November 24, 2014*

**physics**

Elephants communicate via infrasound, at frequencies as low as 14 Hz that can travel up to 10 km. The intensity of these sounds can reach 103 dB, measured a distance of 5.0 m from the source. Determine the intensity level of the infrasound 10 km from the source, assuming the ...
*November 24, 2014*

**Algebra 2**

Step 1: 5x-6=0 +6 +6 Add the six to both sides Step 2: Then divide the five to both sides isolate the x 5x=6 /5 /5 Answer should be: x=6/5 Then do the same to the second one and you should get x=-25 if you did it right
*November 12, 2014*

**Science**

1. A balloonist drops an apple weighing 1.5 N over the side of the balloon's gondola. As it falls and increases speed, the drag force from the air upward on it increases. When the upward force is 0.7 N, what is the direction and magnitude of the net force on the apple? 9.8...
*November 7, 2014*

**Physics**

1.A plane traveling at 300.0 km/h attempts to land on a 500 m runway. The plane’s engines and brakes accelerate uniformly at –5.0 m/s2. Will the plane be able to land safely? Show all your work. Include any equations used, the given and unknown. Show all calculations...
*October 22, 2014*

**Math**

I mean .20 and .020
*October 2, 2014*

**Math**

so is it .02 and .002?
*October 2, 2014*

**Math**

Janice thinks that 20 hundredths is equivalent to 2 thousandths because 20 hundreds is equal to 2 thousands. Use words and a place value chart to correct Janice’s error.
*October 2, 2014*

**chemistry**

How much benzoic acid is still dissolved when 73.53 mL of saturated boiling water is cooled to 20oC. The solubility at 20oC is 0.029g/10mL.
*September 17, 2014*

**algebra**

Thank You
*September 11, 2014*

**algebra**

$4.99 for 48 fluid ounces
*September 11, 2014*

**algebra**

Find the price of any container of lemonade at a local grocery store. (You can also find prices in advertisements and on the Internet.) Make sure you write down the number of fluid ounces in the container. Determine the unit price and post the information.
*September 11, 2014*

**math**

If f(x)=x^2+2 then f(x+h)=???
*August 19, 2014*

**math**

If a ball is thrown directly upward with a velocity of 14 m/s, its height (in meters) after t seconds is given by y = 14t − 4.9t2. What is the maximum height attained by the ball? (Round to two decimal places.) ______ m After how many seconds is that height attained? (...
*August 14, 2014*

**Physics**

It says top of the ball, so you need to minus both of the heights by 8cm. h1 = 0.8 -0.08 = 0.72 It is given that kinetic energy before striking the surface is 0.75 J. So you just nid to use potential energy formula(mgh) to calculate the mass of the ball . h2 = 0.45 - 0.08 = 0....
*May 31, 2014*

**Math**

Oh I see what I did yes I got 256 thank you
*April 17, 2014*

**Math**

448*
*April 17, 2014*

**Math**

Thank you. but how did you get 256? I tried plugging it back into the original h(4)=-16t+128t but I got 446
*April 17, 2014*

**Math**

Two kids are building a rocket for science class. once the rocket is launched its height in feet, h(t) can be found using the function h(t)=-16t^2+128t where t represents time in seconds. They record the time from the moment the rocket launches until it falls to the ground. (...
*April 17, 2014*

**Chemistry**

1)(750psi)(625cm3)/293k=(v)(750psi)/193k
*April 16, 2014*

**Chemistry**

519 cm3 and 775 torr?
*April 16, 2014*

**Chemistry**

Help please? 1)A sample of propane gas occupies 625 cm3 at 20.0 °C and 750 torr. What is the final volume in cubic centimeters at -80.0 °C and 750 torr? 2)If oxygen gas is collected over water at 25 °C and 775 torr, what is the partial pressure of the O2? The vapor...
*April 16, 2014*

**chemistry**

How would I figure out the pressure?
*April 15, 2014*

**chemistry**

If 1.50mol of oxygen gas exerts a pressure of 1500mmHg at 20∘C, what is the volume in liters?
*April 15, 2014*

**physics**

An infinitely long thin metal strip of width w=12cm carries a current of I=10A that is uniformly distributed across its cross section. What is the magnetic field at point P a distance a=3cm above the center of the strip as shown? This one requires some integration! I suggest ...
*April 7, 2014*

**chemistry **

PLS HELP ME AND THANK YOU:) What is the molarity if 2.18 grams of CO(NO3)2.6H2O dissolved in 50.00ml of solution?
*April 6, 2014*

**Math**

A shirt is on sale for 40% off. The sale price is $12. What was the original price? What was the amount of the discount?
*April 1, 2014*

**Math (help)**

Nikki made 2 gallons of punch with fruit juice and ginger ale. The recipe requires 1 gallons of ginger ale. What percent of the total recipe is fruit juice? A- 50% B- 33 1/3% C- 25% D- 10% I got 50% because u need 1/2 more but the answer is 25 please explain
*March 22, 2014*

**physics **

The Achilles tendon is attached to the rear of the foot as shown in (Figure 1) . A person elevates himself just barely off the floor on the "ball of one foot." Assume the person has a mass of 80kg and D is twice as long as d.Find the tension FT in the Achilles tendon...
*February 17, 2014*

**math;)**

a kitchen is shaped like a rectangle with dimensions of 11 1/2 ft. by 9 1/2 ft. the floor of the room is made of square tiles with a side length of 1.2 ft. What is the number of tiles that will cover the kitchen floor?
*February 9, 2014*

**MATH?!!?**

where did you get 1.4 and .75? please explain.
*February 9, 2014*

**math**

is 4x4=16
*January 29, 2014*

**Algebra**

A boat can go 20 miles against a current in the same times that it can go 60 miles with the current. The current is 4 miles per hour. Find the speed of the boat with no current.
*January 15, 2014*

**Algebra 1**

22x+70=17x-95
*October 2, 2013*

**Algebra 1**

8x+2x=15x-10
*October 2, 2013*

**ENGLISH STORY **

What i the story of the last butterfly ?
*July 9, 2013*

**Math**

Rachel spend $1.20 on her drink. She has now 1/3 of the amount of money that she had before she bought the drink. How much money did she have before she bought a drink?
*May 23, 2013*

**Chemistry**

Would the VSEPR notation of CH3Cl be AX4?
*May 23, 2013*

**chemistry**

what would the volume of the gas produced be at a pressure of 700mmHg and a temperature of 30degrees of C
*May 19, 2013*

**chemistry**

hydrogen gas can be produced by reacting aluminum with sulfuric acid .How many L hydrogen gas are produced by reacting 15.0 mol of sulfuric acid with 15.0 mol of aluminum at STP?
*May 19, 2013*

**math**

A sphere and cone have equal radii and equal volume. Find the relation between the radius and the height of the cone
*April 17, 2013*

**aig math**

When 306 stamps were shared among Pat, Kyle, and Ryan, Pat got twice as many stamps as what Kyle and Ryan got together. If Kyle got 18 stamps more than Ryan, how many stamps did Ryan get? Don't forget to show your work.
*March 25, 2013*

**AIG MATH**

i posted it again
*March 25, 2013*

**aig math**

A bookshop had 60 boxes of pencils. Each box contained 85 pencils. Half of the pencils were packed into packets of 25 pencils and the rest were packed into packets of 20. How many packets of pencils were there altogether? My answer is 229 am i right? How many pencils were left...
*March 18, 2013*

**math**

Mia gave 1/3 of her 24 marbles to david. how many did daviv get? I said 8
*March 4, 2013*

**chemistry**

mass of the metal 7.26g volume of water in the calorimeter 10mL initial temp of water in calorimeter 21.5 degrees C initial temp of metal 95.5 d C final temp in mixture in calorimeter 23.8 D C question: calculate the energy lost by the metal taking into consideration that it ...
*February 28, 2013*

**math**

Peter has twice many stickers as Ali. Ali has 40 more stickers than Carlos. They have 300 stickers altogether. How many stickers does Peter have?
*February 13, 2013*

**chemistry**

Silicon carbide is one of the hardest materials known. It is often known commercially as carborundum. Silicon carbide is used primarily as an abrasive for sandpaper and is manufactured by heating common sand (silicon dioxide, SiO2) with carbon. - What mass of SiC should result...
*February 10, 2013*

**chemistry**

2KI+Pb(NO3)2=2KNO3+PbI2 suppose a solution containing 1.25g of KI is combined with a solution containing 2.42g Pb(NO3)2 _what mass of the yellow PbI would result what is the limiting reactant How much in grams of the excess reactant was used how much in grams of the excess ...
*February 10, 2013*

**AIG MATH**

A fruit seller has an equal number of apples and oranges.He sold 109 oranges and 45 apples.The number of apples left is 5 times the number of oranges left.What is the total number of fruit he had at first?
*February 4, 2013*

**math**

A fruit seller has an equal number of apples and oranges. He sold 109 oranges and 45 apples.The number of apples left is 5 times the number of oranges left. What is the total number of fruit he had first?
*February 3, 2013*

**Calculus**

Determine the line through which the planes in each pair intersect. a) 3x+2y+5z=4 4x-3y+z=-1
*January 26, 2013*

**aig math(Ms.Sue)**

Both Todd and Zack earn the same salary. Todd spent $716 and Zack spent $128. Then Zack had 4 times the amount of money Todd had left. How much is their salary? Please tell me how and what your answer is?
*January 24, 2013*

**aig math**

Fill in the missing sign to make the equation true. 125 _ 5 _ 12 _ 2 = 1
*January 16, 2013*

**social studies**

what are advantages and disadvantages of dynastic rule in ancient Egypt
*January 15, 2013*

**chemistry**

mass of evaporating dish 22.34 mass of evaporating dish +hydrate 24.64 mass of evaporating dish +anhydrous salt 23.85 CuS04XH2O=CuSO4+XH2O 1.determine the mass of the water lost 2.determine the number of moles of the water lost
*January 11, 2013*

**math**

thanks Ms. Sue
*December 28, 2012*

**math**

Nina can make 8 glasses of juice drink from one can of juice. If she will have 35 visitors, how many cans of juice should she buy?
*December 28, 2012*

**english**

the chimney sweeper poem the children were very badly treated by masters who only cared about money. discuss the methods you would use to protest
*December 16, 2012*

**aig math**

please show your work
*December 13, 2012*

**aig math**

Jenny,Bob and Paul share a sum of money. Jenny received 2/5 of the money, Bob received 1/4 of the money and Paul received the rest of the money. If Paul received $1.50 more than Bob, how much more money did Jenny receive than Paul.
*December 13, 2012*

**AIG MATH**

The weight of Meg's dog is 2 1/2 times more than that of her cat. If both animals weight 42 lbs, find the weight of each animal?Please show your work.
*December 13, 2012*

**science**

Most of the eastern United States and the West Coast have a climate that is- F)mountain H)desert G)polar J)temperate My answer is temperate, am i right if not please tell me why?
*December 9, 2012*

**science**

Sandy walked to school this morning because it was nice and warm outside.When school let out, a cold front was moving through. What was the weather most likely as she walked home? A)warmer C)the same B)cooler D)it is unpredictable my answer is A),am i right if not please tell ...
*December 3, 2012*

**EOG science**

Okay i took some time studying the question is the answer C)?
*December 3, 2012*

**EOG science**

is the answer A)?
*December 3, 2012*

**EOG science**

Javier lives on the west coast of the U.S near San Francisco. What are the temperatures most likely like where he lives? A)the temperature is always hot. B)the temperature is always below freezing. C)the temperature is moderate and doesn't change much. D)the temperature ...
*December 3, 2012*

**Chemistry**

Please do not answer this question until after 5pm. Thank you.
*December 3, 2012*

**Chemistry**

A buffer was prepared by dissolving 22.61g of NaCLO2 into 0.100L of 4.00M aqueous HCLO2. Calculate the pH of the original Chlorous acid/chlorite ion buffer. Ka= 1.1 x 10^-2.
*December 3, 2012*

**Math**

You decide to make a scale drawing of your bedroom. YOur bedroom measures 12 ft. wide by 20 ft. long. If you are using an 8.5" x 11" paper, whate scale will you use. Explain.
*November 27, 2012*

**Chemistry**

What is the pH of a 0.350M HBrO Solution? HBrO, Ka=2.3 x 10^-9
*November 26, 2012*

**science**

what will cold air moving over a warm body of water create? A)a rain shadow affect B)lake effect snow C)an urban heat island D)higher temp. My answer is B, am i right of not please tell me your answer
*November 15, 2012*

**aig math**

David has 120 stamps. He gave 36 stamps to Maria and some to Alice. After that he had 5/8 of the stamps left. How many stamps did he give to Alice? My answer is 9, am i right if not please tell me why and how you got your answer.
*November 11, 2012*

**aig **

Please solve. Use order of operations. 320-(17+3)-5 = My answer is 323, am i right or not? if not please tell me your answer and how you got it.
*November 11, 2012*

**science**

what does low pressure over land and high pressure over water form? A)a sea breeze C)global wind B)a land breeze D)a front My answer is A), am i right? if not please tell me why and your answer.
*November 7, 2012*

**Math**

The Height of a ski jumper, 'h' in meters is given by the equation h=-4.9t^(2)+0.5vt+8 where 't' is measured in seconds after leaping from the ramp and 'v' is his/her speed at the time of the jump. a)If the jumpers' maximum height is reached is 16 m...
*November 5, 2012*

**math(please help)**

Allison, Ashley, and Becky weigh 124 kg altogether. Allison and Becky weigh 102 kg altogether. Allison and Ashley weigh 86 kg altogether. How much does each person weigh? please show your work.
*November 4, 2012*

**science(please help)**

Which of the following has the greatest effect on the formation of rain or snow? A)cloud cover C)air pressure B)humidity D)temperature My answer is C) am i right, if not please tell me what you got.
*October 30, 2012*

**math**

20.46 * 4 = 81.86 Round the answer to 1 decimal place what is the answer? My answer is 81.8 if not please tell me why and how?
*October 26, 2012*

**algebra**

You may ignore this question, i think i figured it out.
*September 7, 2012*

**algebra**

If you could please help show me the steps so i can continue on with my assignment i would be very appreciative: Problem 9 - p/4 = 5
*September 7, 2012*

**physics**

A peregrine falcon dives at a pigeon. The falcon starts downward from rest with free-fall acceleration. If the pigeon is 53.0 m below the initial position of the falcon, how long does the falcon take to reach the pigeon? Assume that the pigeon remains at rest.
*September 2, 2012*

**Economics**

Classical macroeconomics theory concludes that ultimately A. Fiscal policy generates only quantity effects B. erratic investment causes long business cycles C. Functional finance cures excessive budget deficits D. Natural state of the economy is at full employment
*August 21, 2012*

**Economics**

An increase in the amount of money circulating in the econmomy, ceterics pair bus will result in which of the following A. Demand side inflation B. supply side deflation C. Supply side inflation D. Demand side deflation
*August 21, 2012*

**Economics**

According to the aggregate expenditure function, as the price level decreases, it is reasonable to expect that A the automonos and induced expenditures increase B only the autonomous expenditures increase C only hie induced expenditures decrese C. The autonomous and induced ...
*August 21, 2012*

**Physics**

100 degree celcius because melting point of water is 100 degree celcius
*May 28, 2012*

**Maths**

Thanks
*April 5, 2012*

**Maths**

Express 175.0cm3 in litres (dm3)
*April 5, 2012*

**Chemistry**

How many cm3 are there in 1.0 litre?
*April 5, 2012*

**British Literature 2**

In Rosencrantz and Guildenstern are Dead, how do other characters define isolation (compared to Rosencrantz and Guildenstern) and how does it effect their actions? For example, how does Hamlet's sense of isolation from the court differ from the isolation the Player feels ...
*April 4, 2012*

**British Literature**

In Rosencrantz and Guildenstern are Dead, Guil and Ros constantly seem like outsiders in the play. Why are they so alienated from the rest of the cast? What factors lead to their isolation?
*April 4, 2012*