# Posts by MAry

Total # Posts: 3,829

**L.A**

I do not understand that same question. Help please!!!

**chemistry**

How many grams of water will be produced by the reaction of 7.00g NH3 of 9.00g of NO?

**chemistry**

how do i find a name and formula for a combination of an anion and a cation? ex: Na2CO3 + Ba(NO3)2

**chemistry**

how do i find a name and formula for a combination of an anion and a cation? ex: Na2CO3 + Ba(NO3)2 please help!

**physics**

A child on a beach tosses a walnut straight upward. it reaches the peak of its trajectory and then falls straight downward retracing its path when a hungry seagull grabs the walnut 10.1m above the release point at a time of 1.6s after it was thrown. find the initial velocity ...

**Physics**

A 100kg object moving at 20 m/s comes to a stop over distance of 40 m. What is the coefficient of dynamic fiction between the object and the ground? I tried to work it out with the formula, but I'm really confused. Please help.

**geometry**

The diameter and height of this cylinder are equal to the side length, S, of the cube in which the cylinder is inscribed. What is the expression for the cylinder's volume?

**geometry**

A cylinder has a height of 16 cm and a radius of 5 cm. A cone has a height of 12 cm and a radius of 4 cm. If the cone is placed inside the cylinder as shown, what is the volume of the air space surrounding the cone inside the cylinder? (Use 3.14 as an approximation of ð.)

**Algebraic expression**

I really need this answer like now which is five more than three times a number q

**math**

jake has 6 cards. 4 of his cards are red and 2 cards are blue. Alicia also has 6 cards. half of her cards are red. who has more red cards.

**Math**

A library has fiction and nonfiction books. 2/5 of the library books are fiction. Of these 1/5 are mysteries. 1/3 of the nonfiction books are mysteries. What fraction of all the books are mysteries?

**macroeconomics**

GDP rises from $4 trillion in 2006, the base year, to $5 trillion in 2012. The GDP deflator in 2012 is 120. Find real GDP in 2012. Find the percentage increase in real GDP between 2006 and 2012.

**Math**

If 8 students eat apples and 12 students eat bananas, how many students eat apples or bananas?

**math**

Problem 6-1 Bank Reconciliation The following information is available to assist you in preparing a bank reconciliation for Calico Corners on May 31, 2012: a. The balance on the May 31, 2012, bank statement is $8,432.11. b. Not included on the bank statement is a $1,250 ...

**Physics**

The spring on a popgun obeys Hooke's law and requires a force of 220 N to compress it 12.0 cm to its cocked position. How much energy is stores in the cocked spring?

**World history**

How was life before/after the telephone was invented in Brazil?

**social problems**

. Which of the following social structures is NOT reflected in the act of a wife adopting her husband’s name and foregoing her father’s (her maiden) name? (Points : 1) Patriarchy Heteronormativity Hierarchy Classism

**Math**

Makala made 32 of 60 free throws. What is the experimental probability that Makala will not make the next free throw she attempts. Would it be 8 out of 15 and do u divide

**3 rd grade Math**

this my sons home work. I myself didn't understand . please help me

**3 rd grade Math**

how are perimeter and area? When building your club house did you have a more difficult time finding the perimeter or area? why?

**Chemistry**

How many joules of energy are released when 45.0g of water cools from 18.0C to 70.0C? Specific heat of water is 4.184J/gC.

**physics**

13.44

**Chemistry**

If you had a mixture of sodium chloride and sodium bromide, could you use its conductance to determine the concentration of each solute? Explain.

**Physics**

Particles of charge +65, +48, and −95 μC are placed in a line. The center one is L = 60cm from each of the others.Calculate the net force on the left charge due to the other two.

**College interview**

Hi! I was just wondering if one of the teachers could tell me whether or not it is unprofessional to wear colored contact lenses to a college interview? The colors aren't drastic colors but they are contact lenses nonetheless. thanks!

**chemistry**

I have to calculate the vapor pressure of water at 25.0 degrees celicus. The heat of vaporization of water is 40.65 kj/mol and the vapor pressure of water is 92.7 Torr at 50 degrees celcius. I know I should use log10 P=A- B/C+T but I don't know how to work it out.

**combination probability**

Thank you!

**combination probability**

I am looking for the number of ways you can draw 4 marbles to have an equal number of red and white marbles after the draw. I was using combination probability set up as 6C2*7C2 = 315 but this doesn't include the probability of the 5 blue marbles. I'm not sure how to ...

**combination probability**

A bag contains 6 red, 7 white and 5 blue marbles, how many ways can four marbles be picked where there are an equal number of red and white marbles? Is it 315 ways?

**math**

if I save 3200 for 40 years with 9% interest rate how much will I have saved

**English Riddle**

THANK YOU!!

**English Riddle**

my hands constitute my career. when i was young, i practiced for hours to master the great composers. I decided long ago that "tickling the ivories" would be the key to my success. Who am I? Please help! I came up with "piano" but im not sure...

**SCIENCE**

IF THERE WAS A ZERO CHANGE IN EARTHS ECCENTRICTY, HOW MIGHT THAT AFFECT THE POSSIBILTY OF AN ICE AGE/

**math**

the average annual rainfall for a town is 43.2 inches. I know the monthly rainfall has to be 3.6 inches. the difference of a given month's rainfall from the average monthly rainfall is called the deviation. what is the deviation for each month shown? may 2 3/5 inches, june...

**math**

earned $296.00 and worked for $8.00 per hour. how many hours did she work?

**History**

Legacies (Short and long term impacts/consequences) in history regarding Nelson Mandela

**History**

How Nelson Mandela showed leadership through his actions & events of apartheid

**History**

Leadership Actions/Events in history regarding to Nelson Mandela

**Math**

Amelia's soccer team won 3/4 of outgrew its games.The team won 18 games.How many games did the team play? Equation:3/4g=18 ,g is the total number of games. Possible solution: g=18×4/3,g is 24?

**CAL-Help on dr/dt**

A circular oil slick of uniform thickness is caused by a spill of 1 cubic meter of oil. The thickness of the oil is decreasing at the rate of 0.1 cm/hr as the slick spreads. (Note: 1 cm = 0.01 m.) At what rate is the radius of the slick increasing when the radius is 8 meters...

**Physics~**

No wait I got it!! thankssss

**Physics~**

what?

**Physics~**

The moon's gravity is one-sixth that of the earth. What is the period of a 0.25 m long pendulum on the moon?

**chemistry**

Household bleach is 5.25% NaOCl. What mass of NaOCl would be found in a .5 kg sample of bleach?

**math**

Arlene has a piece of cloth that is 7 1/8 yards long. She cuts a piece that is 4 3/4 yards long to make a skirt. How much cloth is left?

**language arts**

I'm In connections academy too (:

**Interdependence**

How would a world with less interdependence affect my life. I don't really understand how it would affect me directly. Is it like the things we import, would have to made in the U.S so then it would be more expensive?

**Involving global - ms.Sue?**

Can you help

**Involving global exchange**

How a world with less interdependence would affect my life.

**social studies**

How did the Aryans influence the culture of South Asia? Please help.

**CALCULUS - PLEASE HELP!**

It is known that homing pigeons tend to avoid flying over the water in the daytime, perhaps because the downdrafts of air over water make flying difficult. Suppose a homing pigeon is released on an island at point C , which is 3 km directly out in the water from a point B ...

**Chemistry**

26.98 grams of Al and 35.45 grams of Cl2 are reacted according to the equation 2Al + 3Cl2 → 2AlCl3 How many grams of AlCl3 will be formed assuming 100% yield? it says the answer is supposed to be 26.98g but cannot seem to reach that. I just want to know how to get there.

**integrated math**

A 150 yard pipe is cut to provide drainage for two fiekds. If the length of one piece us 3 yards less than twice the length of the second piece, what are the lengths of the two pieces?

**Math**

A floor is to be tiled. It is 3.8 m by 1.9 m. Each tile is a square with 10 cm on each side. Estimate the number of tiles needed.

**physics**

An astronaut (mass of 100 kg, with equipment) is headed back to her space station at a speed of 0.750 m/s but at the wrong angle. To correct her direction, she fires rockets from her backpack at right angles to her motion for a brief time. These directional rockets exert a ...

**math**

Its alright it is 5 hours.

**Math**

2 times

**English 10**

hey ms.sue i think the answer is b is im right

**CAL**

Hmmm you know what, I think this problem is an error. Maybe that's why I could not figure it outt?

**CAL**

The slope of the tangent line to the graph y= x^3/x -x at the point (1, -2/3) I keep getting undefined as a answer but.. I feel like I might be doing something wrong because I feel like that is not the answer, can you help me please?

**economics**

Assume a firm is a monopsonist that can hire its first worker for $6 but must increase the wage rate by $3 to attract each successive worker (so that the second worker must be paid $9, the third $12, and so on). The marginal revenue product of labor is given in the table below.

**Calculus - PLEASE HELP!!**

Ok. Thanks. The answer key said -1 though. So I thought I might have done something wrong.

**Calculus - PLEASE HELP!!**

Use L'Hospital's Rule to solve: lim u --> 1 of (u-1)^3/ ((1/u) - u^2 + (3/u) - 3) Ok, so what I thought was that it is type 0/0 so taking the derivatives of the top and bottom 3(u-1)^2 /(-u^-2 -2u - 3u^-3) and subbing in u = 1 = 0/-6 = 0

**Math**

Estimate the product by finding two answers the exact answer is between 7x 3,289

**Language Arts 8**

thankss!

**science**

If you had 50 atoms of hydrogen, how many atoms each of oxygen, carbon, and nitrogen would you need to have the elements in the same proportion as they are in your body?

**science**

A certain mass of water gains 1,673 J of thermal energy when it's temperature increases by 2.0 degrees Celsius. What is the mass of the water?

**science**

How does the temperature of 33.0 g of graphite change when it absorbs 350 J of thermal energy?

**science**

How much thermal energy is needed to raise the temperature of 4.0 kg of water from 25 degrees Celsius to 75 degrees Celsius?

**science**

On a hot day a friend suggest that you can make your kitchen cooler by leaving the refrigerator door open. Explain whether leaving the refrigerator door open would cause the air temperature in the kitchen to decrease.

**science**

Which has the greater amount of thermal energy, one liter of water at 50 degrees Celsius or two liters of water at 50 degrees Celsius?

**Math - Word problem**

Hi Reiny - I looked at the picture and redrew my walls, but it still doesn't come out for walls that are 10' in each direction. I noticed that the ceiling and floor in the picture had a longer dimension than the side heights, so I took ceiling and floor and extended ...

**Math - Word problem**

I posted this earlier and received a reply - but the reply doesn't make sense. I drew up a picture of what was posted, but the figure comes out to finding the hypotenuse of a triangle that is 16x14 - not 16x10. What am I not seeing? Original problem: There is a room 10 ...

**Math -word problem**

I made your configuration with sheets of paper 10" x 10". I got the 16" leg, but I don't get the 10 foot height. I have the walls/ceiling in position similar to a backwards z. But from one foot over to the right from F, if I go straight up to form one of the...

**Math -word problem**

There is a room 10 feet high by 10 feet wide by 10 feet in length. On one wall, there is an electrical outlet 1 foot from the floor and centered five feet from each side of the wall. On the opposite wall, one foot from the ceiling and centered five feet from each side of the ...

**Early Childhood Education**

Studies show that early readers: A. watched educational television more than two hours a day. B. had access to a variety of reading material and watched educational television. C. knew all of the letters and sounds by age 2. D. were read fiction and non-fiction books during ...

**math**

what does rose mean/fell

**math**

How to find the area of a regular hexagon with a perimeter of 78 inches and a perpendicular distance of 11 inches from side to center

**Chemistry**

If a calorimeter has a mass of 6.0 g, a specific heat of 2.0 J/(g*C), and it and its contents undergo a temperature increase of 5.5 *C, how much heat is gained by the calorimeter?

**ratios**

simplify the rate 35 cups to 84 people

**math**

Karen collects 6/7 quart of rainwater. She uses ½ of the water to clean her bicycle and uses the remaining water equally for 3 houseplants. What volume of water does she use for each houseplant?

**Chemistry**

A student weights 1.700 g of succinic acid and dissolves it in water in a 250.0 mL volumetric flask. A 25.00 mL sample of this solution is withdrawn and placed in a 125 mL Erlenmeyer flask, to which 5 drops of the acid-base indicator phenolphthalein is added. This solution is ...

**math**

your recipe calls for 300 grams of chocolate .you have 200 grams .what fraction of chocolate do you have?

**math**

5 hours

**phy111**

A ball of mass 50g tied to the end of a 50cm inextensible string is whirled around in a vertical circle. find the tension in the string when the ball is at the top of the circle. take g = 10m/s

**intermidiate algebra**

Best Rentals charges a daily fee plus a mileage fee for renting its cars. Barney was charged $111.00 for 3 days and 300 miles, while Mary was charged $198.00 for 5 days and 600 miles. What does Best Rentals charge per day and per mile?

**Maty**

Best Rentals charges a daily fee plus a mileage fee for renting its cars. Barney was charged $111.00 for 3 days and 300 miles, while Mary was charged $198.00 for 5 days and 600 miles. What does Best Rentals charge per day and per mile?

**science**

Due to friction with the Earth's atmosphere, a large static electric charge could build up on our plummeting asteroid fragment. Would you expect our fragment to generate a magnetic field? Explain why or why not

**Math**

How do you divide 3/4 by 2/3?

**Math HELP!**

No, the answer is 14 in.

**Health JUST NEED ANSWERS CHECKED :)**

100%

**geometry**

T=157 degrees

**algebra**

3/5-i

**Help- Calulus**

Yeah, its on my AP Calculus homework actually, in reality its just a small part of a very very long question, I just wanted to make sure I did my work right because the first step is the most important in this problem because if I get part A wrong then I will end up getting ...

**Help- Calulus**

A. If the focal length of the convex lens is supposed to be 5 cm, and if the image is formed 7 cm from the lens, find the distance, p, from the lens to the object. (It’s not necessary to simplify your answer.) Equation: 1/p + 1/q = 1/f

**Calculus**

Ohhhhhhhhhhhhhhhhhhhhh, Thanks!

**Calculus**

Suppose a ball is thrown straight up into the air, and the height of the ball above the ground is given by the function h(t) = 6 + 37t – 16t2, where h is in feet and t is in seconds. At what time t does the ball stop going up and start returning to earth?

**Calculus**

The population of a colony of bacteria is modeled by the function p(x)=50(e^-x - e^-x^2)+10 ,for 0 ≤ x, where population P is in thousands, x is in hours, and x = 0 corresponds to the moment of introduction of a certain chemical into the colony's environment. At ...

**Calculus**

The population of a colony of bacteria is modeled by the function p(x)=50(e^-x - e^-x^2)+10 , for 0 ≤ x, where population P is in thousands, x is in hours, and x = 0 corresponds to the moment of introduction of a certain chemical into the colony's environment. At ...

**Calculus..**

Thanks :)