Thursday

July 2, 2015

July 2, 2015

Total # Posts: 3,028

**AP Chemistry**

This may be a little late but what about moles
*October 11, 2013*

**Fluid Mechanics**

Consider the 2D, incompressible, steady flow between parallel walls, the bottom wall is stationary and the top one is moving at a constant velocity Uw. The pressure is constant. Assuming the flow is fully developed (i.e. independent of x), we can write ∂/∂x≡0...
*October 11, 2013*

**6th grade math**

thanks!!
*October 9, 2013*

**6th grade math**

I'm not sure how to solve this problem using unit rate. Jonathan is baking several boxes of bread. He used 9cups of water to 12 cups of flour. How much water was used per cup of flour? Ans: 9cups water/12cups flour = 3/4 cups water --is the problem solved by acutally ...
*October 9, 2013*

**6th grade math**

Thanks!! Yes, this helps.
*October 8, 2013*

**6th grade math**

Can you check these percent proportion problems? 1. 50 students got pizza at lunch. 20% of those got chocolate milk. How many students got chocolate milk? 50/n = 20/100 20n = 100*50 20n = 5000 n = 5000/20 n = 250 students 2. Mr. Ford has 45 fish in his aquarium. What is the ...
*October 8, 2013*

**6th grade math**

Hi.. i'm a little confused on using proprtion equations to solve percent problem. can you check the following? Is there a different way to solve? equation: is(part)/of(whatnumber)= %/100 1. What is 94% of 43? x/43 = 94/100 100x = 43*94 (cross multiply) 100x = 4042 x = 4042...
*October 8, 2013*

**Math help**

Eric and Mark went to a ball game and visited the concession stand. They each got a hot dog, and mark got a large soda and a bag of peanuts. Eric had a coupon for 3$ off the cost. Mark Paid for the rest, which came to 11.50. Peanuts cost 4$, and a hotdog costs 3.50. What is ...
*October 7, 2013*

**Linear Equation**

is it 2?
*October 6, 2013*

**Linear Equation**

solve for x -6x+12=-13x+10 x= -2 x= -2/7 x= -2/19 x= 2/7 I have no I idea how to answer this question. Can you give me an explanation with the answer? Thank you
*October 6, 2013*

**6th Grade Math**

Thanks!!!
*October 5, 2013*

**6th Grade Math**

Thanks again!! Last question, promise (at least for today :-).. Forgot to include this one: A 3lb pork loin can be cut into 10 pork chops of equal weight. How many ounces in each pork chop? 1 lb = 16oz (unit ratio 16oz/1lb) 3lbs x 16oz/1lb = 48 oz = 48oz/10 pork chops = 4.8oz/...
*October 5, 2013*

**6th Grade Math**

Thanks! Can you also check these? 1. Convert 18ft to yards 3ft = 1yd (unit ratio 1yd/3ft) 18ft x 1yd/3ft = 18/3 yd = 6 yds 2. Convert 2lb to ounces 1 lb = 16 oz (unit ratio 16oz/1lb) 2 lb x 16oz/1 lb = 32 oz. 3. Convert 2miles to feet 1 mi = 5280 ft (unit ratio 5280ft/1mi) = ...
*October 5, 2013*

**6th Grade Math**

Can you check my answers please? 1. Convert 2 and 3/4 qts to pints. 1 qt = 2 pints (unit ratio = 2/1) 2 and 3/4 x 2/1 = 9/4 x 2/1 = 22/4 = 5 and 1/2 pints 2. A 40-foot power boat is for sale. How long is the boat to the nearest yard? 1 ft = 3yds (unit ratio = 1/3) 40 x 1/3 = ...
*October 5, 2013*

**Biography**

How do I start my biography? I am writing about my sister, but I don't know how to start.
*October 5, 2013*

**math**

Alaska has 18 national parks. If you add zero to that number, you get the number of national parks in Virginia. How many national parks are in Virginia ? How do you know ?
*October 3, 2013*

**Calculus**

Thanks a lot Steve!
*October 3, 2013*

**Calculus**

Use the linear approximation (1+x)^k\approx 1+kx to find an approximation for the function f(x) for values of x near zero. I need help for (3+3x)^(1/3). Please help me!
*October 3, 2013*

**6th grade grammar**

Thanks again Ms. Sue!! (sorry about answer typo in #20 - 2nd phrase isn't in the sentence)
*October 1, 2013*

**6th grade grammar**

Thanks Ms. Sue!! You mentioned that there was another phrase for #2 (We were looking for the documents that were hidden under the generator.). But, I don't see it. Also, can you check these 2? 18. I kicked out the vent and we jumped from the shaft into a dumpster filled ...
*October 1, 2013*

**6th grade grammar**

I'm getting confused on finding prepositional phrases. Can you check my homework, please? Directions: Put a 'P' above the preposition. Circle object of preposition. Put a 'M' above any modifiers. Put () around prepositional phrase. 1. After we cut the fence...
*October 1, 2013*

**physics**

Kim is in a boat traveling 3.8 m/s straight across a river 240 m wide. The river is flowing at 1.6 m/s. What is Kim's resultant velocity?
*October 1, 2013*

**physics**

A driver in a car traveling at a speed of 70 km/h sees a cat 129 m away on the road. How long will it take for the car to accelerate uniformly to a stop in exactly 125 m? answer in units of s
*September 30, 2013*

**physics**

A driver in a car traveling at a speed of 70 km/h sees a cat 129 m away on the road. How long will it take for the car to accelerate uniformly to a stop in exactly 125 m? answer in units of s
*September 30, 2013*

**Dice Probability**

What is the probability of rolling two number cubes and having the first cube land on 2 and the second cube land on 3? I got 2/6 * 3/6 = 6/36 which becomes 1/6 1/6 probability is my answer correct?
*September 30, 2013*

**Card Probability**

When drawing a card from a deck, the P(face card and red) is:
*September 30, 2013*

**Probability With Cards**

When drawing a card from a deck, the P(king and hearts) is:
*September 30, 2013*

**Math Probabilities **

P(A or B) = P(A) + P(B) − P(A and B) when 1. A and B are mutually exclusive 2. A and B are complements 3. A and B occur together 4. A and B are dependent I am pretty confused on this one help will be great :)
*September 29, 2013*

**Math**

There are 45 candies in a bowl, 20 red and 25 yellow. If two are taken from the bowl, what is the probability they will be two red candies? here is what I have but I need help with the rest or even knowing if I am right. 20/45 25/43 25 * 20 = 500 45 * 43 = 1935 0.25839 is decimal
*September 29, 2013*

**Probability Math **

Event A has probability of 0.2 and event B has probability of 0.3. If they are independent, what is the probability that both of them happen? I can't remember how to do this one.
*September 29, 2013*

**Math**

A standard deck of cards contains 52 cards. Of these cards there are 13 of each type of suit (hearts, spades, clubs, diamonds) and 4 of each type of rank (A – K). Three cards are pulled in order from this deck of 52 playing cards. What is the probability that the cards ...
*September 29, 2013*

**Math Probabilities **

A standard deck of cards contains 52 cards. Of these cards there are 13 of each type of suit (hearts, spades, clubs, diamonds) and 4 of each type of rank (A – K). Two cards are pulled in order from this deck of 52 playing cards. What is the probability that the cards will...
*September 29, 2013*

**Probability Math**

The probability of a red candy being selected from a bowl is 0.2, and the probability of a pink frosted animal cookie being taken out of a different bowl is 0.4. What is the probability of getting both a red candy and a pink cookie?
*September 27, 2013*

**Math**

A standard deck of cards contains 52 cards. Of these cards there are 13 of each type of suit (hearts, spades, clubs, diamonds) and 4 of each type of rank (A – K). Two cards are drawn from the deck and replaced each time back into the deck. What is the probability of ...
*September 27, 2013*

**Reading Help**

Ya girl,shake that booty
*September 26, 2013*

**Reading Help**

Ok I get it now thank you Ms. Sue
*September 26, 2013*

**Reading Help**

Think about the rites of passage that individuals confront in the following literature The bass, the river, and Shelia Mant by W.D Wetherell Oranges by gary Soto I have no idea what im supposed to do here. Please help me.
*September 26, 2013*

**Reading Help**

In hanging fire the recurring line "and momma's in the bedroom with the door closed" creates a feeling of Confidence Connection Isolation Poverty Is it Isolation?
*September 26, 2013*

**Reading The Scarlet Ibis help**

Ok I Read the story Is it the Narrator?
*September 26, 2013*

**Reading The Scarlet Ibis help**

The only character who believed in doodle throughout the story of the Scarlet Ibis was Daddy Mama Aunt Nicey The narrator Is it Aunt Nicey?
*September 26, 2013*

**physics**

what is the magnitude of the average acceleration of a skier who starting from rest, reaches a speed of 8.0 m/s when going down a slope for 5.0 sec? how far does the skier travel in this time?
*September 26, 2013*

**Geometry**

Just remember to take the area of the bottom of the cylinder and then multiply it by the height of the cylinder. This is the formula for the volume of the cylinder: V=π(r^2)h Just substitute the info given into this equation. r= 1.2 cm h= 5.3 cm so V= π(1.2^2)(5.3) ...
*September 24, 2013*

**expression help**

which is the sum or difference is equivalent to the following expression 3x-2/9 *fraction*
*September 24, 2013*

**Property help**

Its accociative property of multiplication
*September 24, 2013*

**Property help**

what property is this? (3z)xy=3(zx)y is it a communative property of addition? if not what is it? thank you
*September 24, 2013*

**Expression**

(4/7)^3 *fraction* I have never done this kind of expression before. Answer 343/64 21,952 407 64/343 Is it A?
*September 24, 2013*

**Expression Help**

Thank you
*September 24, 2013*

**Expression Help**

is it C?
*September 24, 2013*

**Expression Help**

so it is C or D
*September 24, 2013*

**Expression Help**

a negative
*September 24, 2013*

**Expression Help**

Can you help me Ms. Sue?
*September 24, 2013*

**Expression Help**

simplify the following expression 1/4 *fraction* (24-16x) Answers 6+4x 6+4 6-4x 6-4 Is it A?
*September 24, 2013*

**Art**

if you have any comic books you can write an outline of the bear.
*September 24, 2013*

**Expressions help**

THANK YOU MS SUE!
*September 24, 2013*

**Expressions help**

please help I have been stuck on this question for the longest
*September 24, 2013*

**Expressions help**

I have no idea on how to do this equation please help me. What is the simplified form of the following expression 2x^2y+3x^2+4y+3x^2y+2y possible answers 1.)5x^4y^2+3x^2 2.)8x^2y+6y^2 3.)5x^2y+3x^2+6y 4.)14x^2y Is it 3?
*September 24, 2013*

**Property help**

Which property is illustrated by the following statement (3z)xy=3(zx)y Associative property of multiplication Communative property of Multiplication Inverse property of multiplication Communative of Addition My answer is commnative property of addition am I right?
*September 23, 2013*

**Algebraic Expressions**

so 7 --- 3+z
*September 23, 2013*

**Algebraic Expressions**

ic expression for the following word phrase product of 7 and the sum of 3 and z is it 3+7 ---- 7 please help Thank you
*September 23, 2013*

**Writing: sportscast**

For writing, I have to write about a football sportscast. How should I start it?
*September 17, 2013*

**Writing**

There a strong winds which are rocking the boat and there are some water leaking in on both sides.
*September 11, 2013*

**Writing**

I am doing an intro paragraph of being on a pedal boat at a bay. My writing teacher said we had to make our stories interesting and make people want to read it and be fascinated with it. So, I started with: "Ahhh!!! We're going to sink," said Elana. For my second...
*September 11, 2013*

**Health**

Jill sleeps 8 hours each night. Spends 80% working on communicating & 60% of time listening. How many hours a day does she spend listening?
*September 11, 2013*

**6th grade math**

Just wondering if you could check my answer to this question. Tell whether problem can be solved by using GCF or LCM. Then solve. Sean has 8inch pieces of toy train track and Ruth has 18 inch pieces of train track. How many of each piece would each child need to build tracks ...
*September 9, 2013*

**math**

write an integer for each solution a salary increase of $250
*September 9, 2013*

**math**

Liz is a student in Ms. Xu's class. Liz says to her classmates, "Of all the pairs of students Ms. Xu can choose as class leaders, I am included in one-tenth of those pairs." How many students are in Ms. Xu's class?
*September 8, 2013*

**Science**

what the difference between the structures of simple and complex
*September 8, 2013*

**Writing**

is great
*September 7, 2013*

**math**

write each expression using exponents ? 1)10.10.10 2)6 3)4.4.4.6.6
*September 7, 2013*

**6th grade math**

It was a little confusing to know which one to use. Is there a method for knowing the difference - like looking for keywords 'greatest' or 'smallest'?
*September 4, 2013*

**6th grade math**

Can you check the following problems? Tell if the problem can be solved by using GCF or LCM and then solve. 1. Joanne is campaigning for class president and plans to distribute 20 flyers and 16 buttons. She wants each classroom to receive an identical set of campaign materials...
*September 4, 2013*

**biology **

You need a 5 microgram glucose/ml aqueous solution, but the lab balance is accurate to only 0.01g (ie., it displays 2 digits to the right of the decimal point) Describe 2 methods by which you could accurately prepare this solution using the lab balance. I don't know what ...
*September 4, 2013*

**order of operations**

Find the value of the expression below for r=4 and t=2 t^3-r+20 divided by r 9 72 6* I chose this one 40
*September 4, 2013*

**Inverse/Direct Variation**

Is this an example of inverse variation, direct variation, or neither? Because, on average, Linda makes 60% of the free throws she shoots in a basketball game, the number of points she scores on free throws depends on the number of shots she gets.
*September 1, 2013*

**Chemistry**

the mass of cylinder one is 1.35 times the mass of cylinder two, and the volume of cylinder one is 0.792 times the volume of cylinder two. If the density of cylinder one is 2.70 g/cm3 what is the density of cylinder two? THIS QUESTION HAS ME GOING CRAZY!!
*September 1, 2013*

**physics **

A speeder traveling at a constant speed of 125km/h races past a billboard. A patrol car pursues from rest with constant acceleration of (8.0km/h)/s until it reaches its maximum speed of 190km/h, which it maintains until it catches up with the speeder. (a) How long does it take...
*August 27, 2013*

**Math**

How many thousands of square kilometers of area does Canada have?
*August 27, 2013*

**biology- photosynthesis**

also should i include this: During the summer when plant life thrives the concentration drops, this is because the plants are "breathing" in the CO2, each fall as the vegetation dies off and decomposes some, (not all) of the sequestered CO2 is released back into the ...
*August 6, 2013*

**biology- photosynthesis**

There is a distinct oscillation of CO2 during each year as CO2 is added to the atmosphere each winter or removed from the atmosphere each summer. Explain what specific cellular processes lead to these changes in CO2 level. You must explain what causes CO2 to be released to the...
*August 6, 2013*

**chemistry**

A scientist makes 300.0 mL of an acetate buffer using [CH3COOH]o=[NaCH3COO]o= 0.075 M. How many mL of 5.0 M NaOH can be added before its buffering capacity is exhausted?
*August 5, 2013*

**biology multiple choice**

I am preparing my self for a biology exam and i am going through past papers. Unfortunately they do not supply us with the answers, which in one way is good.(since you have to actually work for your answers) All I am asking of you people is that you run over my answers and see...
*August 1, 2013*

**World History**

Thanks!
*July 31, 2013*

**World History**

Under what circumstances does it appear that paleolithic humans first used boats?
*July 31, 2013*

**Stats**

84.13 - power
*July 29, 2013*

**Finance**

I can't seem to figure this problem out: You make $4,800 annual deposits into a retirement account that pays 10.5 percent interest compounded monthly. Required: How large will your account balance be in 30 years? I feel like I'm really close, though. Here is where I&#...
*July 29, 2013*

**Physics**

Carol drops a stone into a mineshaft 122.5m deep. Calculate the time from when she hears it hit the bottom of the shaft. Assume the speed of sound in the air 343 m/s.
*July 8, 2013*

**english**

Choose the answer that displays the correct spelling of the plural form of the words in parentheses. Ancient (Roman) used (goose) as (guard) to warn of (enemy) approaching the camp.
*July 5, 2013*

**Physics**

An aircraft starts from rest and accelerates at 42.5m/s^2 until it takes off at the end of the runway. How long will it take the aircraft to travel down the 2.6km runway? Answer is 11 seconds
*July 3, 2013*

**Physics**

How far will a car travel if it starts from rest and experiences an acceleration of magnitude 3.75m/2^2 forward for 5.65 s? Answer is 59.9m
*July 3, 2013*

**Physics**

How far will a car travel if it starts from rest and experiences an acceleration of magnitude 3.75m/2^2 forward for 5.65 s? Answer is 59.9m
*July 3, 2013*

**Physics**

How far will a humanoid robot travel in 3.0 s, accelerating at 1.0cm/s^2(forward) if its initial velocity is 5.0cm/s(forward) answer is 20cm (forward)
*July 3, 2013*

**math**

Each game wheel is divided into equal sections. The spinners on the game wheels are each spun once and the number each spinner lands on is recorded. What is the probability that both numbers are odd numbers?
*July 3, 2013*

**Math**

John has a box that contains one red ball and one blue ball. Every minute he reaches into the box and randomly takes out a ball from it (without looking). No matter which ball he took out, he puts it back together with another ball of the same color. Thus, after n minutes, the...
*July 1, 2013*

**Physics **

A q = +3.00 mC test charge is placed inside a constant uniform electric field created in a parallel plate capacitor connected to a battery of unknown voltage. The capacitor is made of two parallel plates each with area equal to 0.250 m2 separated by a distance of 0....
*June 20, 2013*

**Physics **

A capacitor is constructed from two conducting with a plate separation of d. The voltage between the plates is 31.2 volts and the electric field between the two plates is measured to be E = 2805 V/m. What is the minimum amount of force needed to push an electron from the ...
*June 20, 2013*

**Physics**

A charge q=+5.11 mC (millicoulombs) has a mass of 0.00456 kg and is accelerated by two rings connected to a voltage source of 1378 volts. What is the velocity of the charge when it passes through the second ring?
*June 20, 2013*

**statistics**

the mean of sat scores of a specific month is1000 with a standard deviation of 100. find the 90 percentiles . assume that the sat score is normal distributed
*June 18, 2013*

**math**

When the Senior class decided to order T-shirts, they were quoted a price of $7.50 per shirt plus a setup fee. The total cost for 300 shirts was $2,450. Write an equation in the form y = mx + b that represents the cost, y, for x shirts.
*June 18, 2013*

**math**

Eden finances a purchase of $611.03 by making monthly payments of $26.17 for 2 1/2 years. What annual interest rate, compounded monthly, is she being charged?
*June 10, 2013*

**Math**

how do i put 1/2, 2/3, 1/4, and 1/3 in order from least to greatest
*June 2, 2013*