Monday

March 2, 2015

March 2, 2015

Total # Posts: 382

**Math**

What is the three digit mystery number? Clues: It is less than 300, the tens digit is 4 more than the hundreds digit, the sum of the digits is 9, the hundreds digit is 2 less than the ones digit.
*January 9, 2013*

**math**

look at the table of 9s facts. Is there another number pattern in the multiples of 9? Explain
*December 12, 2012*

**Science**

Why are pi and pi* (anti-pi) transitions on conjugated double bonds such good absorbers of visible light?
*November 14, 2012*

**math**

A man is six feet tall and casts a shadow 4 feet long. At the same time a child is 4.5 feet tall, how long is her shadow?
*November 8, 2012*

**algebra 1**

micheal earns 6% commission on his sales. If he earned $1,800 in commission, how much equipment did he sell?
*October 30, 2012*

**physics**

A ferry is crossing a river. The ferry is headed due north with a speed of 1.1 m/s relative to the water and the river’s velocity is 4.2 m/s to the east.Find the direction in which the ferry is moving (measured from due east, with coun- terclockwise positive)
*October 23, 2012*

**algebra 1**

find the length of the following segment created by these pairs of endpoints: (0,1), (6,6)
*October 23, 2012*

**algebra**

how do I solve 10x198=(10xM)-(10x2)
*October 15, 2012*

**math**

9!/(1!*3!*3!) you take the total amount of letters you have factorial, divided by each of you different types of letters factorial. the reason that there is a 1! in the beginning is because you have the first two A's in the front, so they won't be going anywhere, ...
*September 27, 2012*

**Synonym**

A synonym for "contrivance" will be spontaneity penance or strategy?
*September 26, 2012*

**Math**

Three fair dice are rolled, and all outcomes are equally likely. What is the probability that the sum of all the numbers on the dice is at most 6?
*September 11, 2012*

**Math**

Three fair dice are rolled, and all outcomes are equally likely. What is the probability that the sum of all the numbers on the dice is at most 6?
*September 11, 2012*

**C# Programming**

There are three seating categories at an athletic stadium. For a baseball game, Class A seats cost $15 dollars each, Class B seats cost $12 each, and Class C seats cost $9 each. Create an application that allows the user to enter the number of tickets sold for each class. The ...
*September 2, 2012*

**math**

998877665544332211
*August 29, 2012*

**Math**

Al the answers for the worksheet d-30 pizzazz for all math problems
*August 26, 2012*

**Physics**

A helicopter traveling upward at 106 m/s drops a package from a height of 500 meters. To the nearest second how long does it take to hit the ground? I'm not sure what numbers to use. What formula to use or anything.. I think 106 m/s is the Vo^2 and 500 m is the h? I had a ...
*August 26, 2012*

**College Physics I**

A helicopter traveling upward at 120 m/s drops a package from a height of 500 meters. To the nearest second how long does it take to hit the ground?
*August 26, 2012*

**english III**

Who loved his charge but never loved to lead; One whose meek flock the people loved to be, Not lured by any cheat of birth. Which other type of substitute foot is used?I am having a hard time with poetry.
*August 3, 2012*

**HEALTH**

thank you
*August 1, 2012*

**math**

johnny at 1/2 of a pizza, sue has 1/2 of another pizza, johnny said he ate more than sue, but sue says they both at the same amount, is johnny right?
*July 30, 2012*

**math**

Find the balance in an account that has $700 invested at 5.5% for 4 years compounded semi-annually.
*July 9, 2012*

**Grammas and Composition 11th grade**

I PURCHASED A USED BOOK TO COMPLETE A CORRESPONDENCE COURSE. PAGE 291 AND 292 IS MISSSING AND I NEED QUESTIONS 15-20. CAN SOMEONE HELP ME?
*July 3, 2012*

**Grammar and composition**

on page 807, Exercise B it wants me to amswer the questions and name the reference book I used to find the answer. Question 10 is "What is the number of Buddhists in North America?
*July 3, 2012*

**writing essay**

is the answer D?
*June 21, 2012*

**Calc **

a fast food place sells 425 large orders of fries per week at price $2.75 each. A market survey indicates that for each $0.10 decrease, sales will increase by 20 orders of fires a) Determine the ,marginal revenue function b) With what price with marginal revenue be equal to ...
*June 20, 2012*

**Health**

No it just occurred to me as something intriguing. I don't see how anyone can argue that it's ok for waiters and waitresses to not wear hats/hairnets or gloves but apparently it's ok because restaurants pass health inspections. I have eaten at many restaurants and ...
*May 12, 2012*

**Health**

At the dining halls I work out all employees must wear hats or hairnets and gloves at all times no exceptions! At all the restaurants I have ever eaten at I have never seen waiters or waitresses wear gloves or hairnets/hats ever! I feel as if this a huge sanitation violation ...
*May 12, 2012*

**Math Models**

Are the functions y-5=6(x-3) and y=6x-13 equal?
*May 3, 2012*

**Math **

Given two points for a graph: max=3.224 and min=4.664 find the midline and amplitude.
*April 30, 2012*

**chemistry**

The reaction described by the equation Zn + Hg2Cl2 <--> 2Hg +Zn+2 + 2Cl is run on electrochemical cell. The E^0 of the cell at 25 degrees C is 1.03V. In the same cell, [Cl-]=.10 M and [Zn+2] is unknown, and the measured cell voltage is 1.21V. Compute the value of [Zn+2] ...
*April 12, 2012*

**algebra**

write an expression in simple form to represent the perimeter of a rectangle whose length is represented by 3x+1 and width is represented by 5x-6
*April 11, 2012*

**Chemistry 1201**

An unknown compound contains only carbon, hydrogen, and oxygen (C?H?O?). Combustion of 6.50 of this compound produced 9.53 g of carbon dioxide and 3.90 g of water. 1) How many moles of Carbon? 2) How many moles of Hydrogen?
*March 28, 2012*

**adding fractions**

what does one half plus one third equal?
*March 18, 2012*

**CALCULUS**

I'm currently on the same question after spending over 2 hours on it... What did you get?
*March 12, 2012*

**Chemistry**

consider the following reaction: 2CH3OH(g) yields 2CH4(g) + O2(g) change in enthalpy= 252.8kJ How many kilojoules of heat are released when 38.4 g of CH_4 g) reacts completely with O2 (g) to form CH3OH (g) at constant pressure?
*March 5, 2012*

**geometry**

how long is a stage that is 6 meters wide with an area of 48 sq meters?
*March 5, 2012*

**geom/trig**

i believe that you set it up like cos(x)= a/h a= 11 feet h= 40 feet then you take the inverse cos of 11/40
*March 5, 2012*

**Chemistry**

yes all of these parts are derived from the same problem How many kilojoules of heat are released when 38.4 g of CH4 (g) reacts completely with O2 (g) to form CH3OH (g) at constant pressure?
*March 5, 2012*

**Chemistry**

For a given sample of CH3OH, the enthalpy change during the reaction is 82.6 kJ. How many grams of methane gas are produced?
*March 5, 2012*

**Chemistry**

consider the following reaction: 2CH3OH(g) yields 2CH4(g) + O2(g) change in enthalpy= 252.8kJ Calculate the amount of heat transferred when 26.0 g of {\rm CH_3OH} (g) is decomposed by this reaction at constant pressure.
*March 5, 2012*

**CHEMISTRY**

which of the following represent a buffer system? A.) NaOH and NaBr B.) HF and NaF C.) HC2H3O2 and C12H22O11 D.) HCl and KOH
*March 3, 2012*

**CHEMISTRY**

write the conjugate acid for the following: A.) NO3- = B.) HPO4^2- = C.) Br- = D.) S2- =
*March 3, 2012*

**chemistry**

write the conjugate base for the following: A.) HCN= B.) HPO4^2- = C.) NH4+ = D.) HC2H3O2=
*March 3, 2012*

**Physics**

A satellite has a mass of 6000 kg and is in a circular orbit 3.30 105 m above the surface of a planet. The period of the orbit is two hours. The radius of the planet is 4.20 106 m. What is the true weight of the satellite when it is at rest on the planet's surface? I know ...
*March 2, 2012*

**Physics**

If a shoe is dropped from a height of 40m, what is its speed after falling for two seconds?
*February 29, 2012*

**math**

Two fractions have the same denominator. Which is the greater fraction: the fraction with the greater numerator or the lesser numerator?
*February 21, 2012*

**Math**

just do 120 divided by 20 the answer you get will be the number of hours it took him.
*February 20, 2012*

**science**

i need to find a website that has a picture of hafnium lamp filaments
*February 20, 2012*

**science**

on what website can i find info on things made of the element hafnium:a picture,how it's made, and why it is made with hafnium.
*February 19, 2012*

**SCIENCE**

pretend that the pattern is 1212312123. you would label it 12123.
*February 16, 2012*

**College Physics**

On planet Z, the standard unit of length is the foose. Ann the Astronaut is 5.90 feet tall on earth. She lands on planet Z and is measured to be 94 foosi tall. Her partner Rachael is 88 foosi tall. How tall is Rachael on Earth?
*February 4, 2012*

**Physics**

An astronaut of mass 70 kg carries an empty oxygen tank of mass 14 kg. He throws the tank away from himself with a speed of 3 m/s. With what velocity does the astronaut start to move through space?
*January 15, 2012*

**math**

if a hexagon has two right angles, what is the sum of the measures of the remaining angles?
*January 12, 2012*

**algebra**

A bag contains 4 orange marbles, 11 blue marbles and 1 yellow marble. What is the probability of drawing a blue followed by another blue without replacement? Not sure what to do?
*December 11, 2011*

**calculus**

F(x)=e^(-3x/2) Let R be the region between the graph of f and the x-axis on the interval 0 to 1 . Find the volume V of the solid of revolution generated by revolving R about the x-axis. Give both exact (symbolic) and approximate (numeric) answers.
*November 28, 2011*

**english **

what is the adverb in the sentence They are always late for ballgames. is it always
*November 17, 2011*

**English**

A good writer makes events in a story occur plausibly. The action should be consistent with the characters; if the author forces them into uncharacteristic behavior in order to advance the plot, the story will seem artificial. In "Thank You, M'am, " by Langston ...
*November 9, 2011*

**Science (Chemistry)**

I'm not sure how to do a couple of problems on my chemistry worksheet. Can you please help me? You dissolve 0.00902 g of naOH in enough water to make 1000 mL. What is the Ph of this soultion. What is the molarity, pH, and pOH of 5.00 of naOH in 750.0 mL of soultion. I know...
*November 6, 2011*

**Math**

Robert gave one-half of his marbles to Dean. Then he gave two-thirds of the remaining ones to Mark. If he ended up with 10, how many did he have when he stsrted?
*November 2, 2011*

**Geometry**

7x-54+180-8x+180-8x=180 The answer comes out to 14.
*October 28, 2011*

**Physics**

A crow is flying horizontally with a constant speed of 2.50 m/s when it releases a clam from its beak. The clam lands on the rocky beach 2.20 s later. Consider the moment just before the clam lands. (Neglect air resistance.) A) What is its horizontal component of velocity? B) ...
*October 24, 2011*

**Physics**

In Denver, children bring their old jack-o-lanterns to the top of a tower and compete for accuracy in hitting a target on the ground. Suppose that the tower height is h = 9.80 m, and that the bulls-eye is a horizontal distance of d = 3.2 m from the launch point. If the pumpkin...
*October 24, 2011*

**math**

What i think is Samuel because he gets 6 DVDs and he's only paying a little bit more
*October 19, 2011*

**Math**

If you jog for half an hour everyday for nine days. Write an improper fraction that shows the total number of hours you jogged.
*October 13, 2011*

**Math**

If you jog for half an hour everyday for nine days. Write an improper fraction that shows the total number of hours you jogged.
*October 13, 2011*

**Math**

If you jog for half an hour everyday for nine days. Write an improper fraction that shows the total number of hours you jogged.
*October 12, 2011*

**chemistry**

N2 (g) + 3H2 (g) → 2NH3 (g)ΔH = -92.6 Calculate ΔH (in kJ) for the decomposition of 30.5 g NH3 (g) into N2 (g) and H2 (g)
*October 12, 2011*

**Science**

I tried but I cant find it.:O
*October 12, 2011*

**Science**

Which of the following quickly changes the land when gravity pulls loose rocks and soil down the side of a hill? A)a volcanic eruption B) an earthquake C) a fault D) a landslide
*October 12, 2011*

**Pre-Algebra**

Make a table with all the whole number pairs of length and width values that give an area of 24 square meters.
*October 3, 2011*

**math**

graph the points in each group and connect each point with the next point using straight line segments. Do not connect the last point in one group with the first point in the next group.
*September 25, 2011*

**Physics**

Its C because its moving
*July 29, 2011*

**Physics**

On an inclined plane, the Fn is only = to the y component of the Fg or vice versa.
*July 14, 2011*

**science**

a piece of wood that measures 3.0 cm by 4.0 cm by 5.0 cm has a mass of 90.og. what is the density of the wood? would the piece of wood float in water? remember the density of water is 1.00g/ml
*June 21, 2011*

**Science**

i have to do a research project on dolphins
*May 24, 2011*

**4th grade math**

you add two
*May 19, 2011*

**geometry**

The radius of a circle is 6cm and the arc measurement is 120 degrees, what is the length of the chord connecting the radii of the arc?
*May 6, 2011*

**English 102**

I think your kind of young to be asking about that kind of stuff
*April 29, 2011*

**Math**

Estimate to the nearest integer. Square root of -55
*April 28, 2011*

**calculus**

I posted one before but this is another one of those problems that i need help with! I don't know how to approach this one at all! Please help use the definition of the derivative to find f'(x) when f(x)= (4/x^2)+(2/5*x)
*April 24, 2011*

**calculus**

:( please help?
*April 24, 2011*

**calculus**

sorry! the numerator is 2+x and the denominator is x^3
*April 24, 2011*

**calculus**

I am learning derivatives and I despise having to use the definition of the derivative. Please check my answer for this particular one! it is different from the one I get by differentiating. The question: f(x) = 2+x / x^3 my answer: -6x^2-2x^2
*April 24, 2011*

**math**

Brown checked out 4 books and 1 videotape at the library. He returned them all 7 days late the library charges late fees at $3.00 per week for a video and $0.15 per day for a book. Write an expression that represents browns change if he paid his late fees with a $10 bill?
*April 17, 2011*

**science**

why are dog fleas more successful parasitesthen bacteria that cause deadly diseases?
*April 13, 2011*

**math**

Mary's group of close friends are going to fifth grade in September. All are going to Belleview Elementary and their homerooms will be room 12, 14, or 16. All of her friends but 4 are going o room 12, all but 4 are going to room 14, and all but 4 are going to room 16. Not ...
*April 10, 2011*

**math**

MathMate attempted to help but did not show how the problem is answered. It only confused the problem. Could someone else please help? Thanks. The denominator of a fraction is 4 more than the numerator. If both the denominator and the numerator are increased by 1, the ...
*March 26, 2011*

**math**

The denominator of a fraction is 4 more than the numerator. If both the denominator and the numerator are increased by 1, the resulting fraction equals 1/2. What is the original fraction? **Need to show all work** Thanks for the help.
*March 26, 2011*

**chemistry**

How many milliliters of 3.0 M hydrochloric acid are i required to prepare 500 milliliter of 1.0 M Hydrochloric solution
*March 15, 2011*

**Math**

plot 7 on the x axis
*March 15, 2011*

**math**

Please help my equivalent fraction. I am greater than 1/5 and less than 1/2. My denominator is between 2 and 4. What fraction am I? Thanks for the help..
*March 9, 2011*

**chemistry**

A gas occupies 8.2 liters at 2.5 atm. What is the pressure if the volume becomes 7.5 L?
*March 3, 2011*

**chemistry**

A gas occupies 8.2 liters at 2.5 atm. What is the pressure if the volume becomes 7.5 L?
*March 3, 2011*

**chemistry**

A gas occupies 8.2 liters at 2.5 atm. What is the pressure if the volume becomes 7.5 L?
*March 3, 2011*

**ipc**

how much power is used to move a 25 kg mass 8 meters in 15 seconds
*February 28, 2011*

**Math**

90/65=.7222*5=3.6111+5=8.6111 8.1 feet
*February 27, 2011*

**ap chem**

ok, i'm given: Ethylene Glycol C2H6O2 is the main ingredient in antifreeze. density of pure EG: 1.132 g/mL Anti-freeze is 32% by volume EG I have to find: Volume of Eg in 1 L Mass of Eg in 1 L & the Volume of "solvent" in 1 L Can someone help me? and give me some...
*February 27, 2011*

**ap chem**

ok, so i have to find the mass of the HNO3 in 1 L and the mass of the H2O in 1 L. I'm given: HNO3 solution 1.42 g/mL 16M I'm really terrible at this stuff and it should be easy, but I have no idea where to start.
*February 25, 2011*

**ap chem**

ok, sweet. i had most of that set up right. so the mass of HNO3 = 1008 g & the mass of H2O = 412 g?
*February 25, 2011*

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