Wednesday
December 17, 2014

# Posts by may

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
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
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
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
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
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

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

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

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