Tuesday

September 1, 2015
Total # Posts: 1,202

**Algebra **

a worker has a new pump and an old pump. the new pump can fill a tank in five hours and the old pump can fill the same tank in 7 hours write and solve an equation for the time it will take both pumps to fill one tank if the pumps are used together.
*August 27, 2015*

**math**

Carlos joins a DVD club.The membership cost$49 per year. Each DVD cost$4. supose carlos buys 28DVDs this year . How much money will he make?
*July 29, 2015*

**math**

Pairs of markings, a set distance apart, are made on highways so that the police can detect drivers exceeding the speed limit. Over a fixed distance, the speed R varies inversely with the time T. For one particular pair of markings, R is 35mph when T is 6 seconds. Find the ...
*July 24, 2015*

**math**

HELP PLEASE! The distance d that an object falls is directly proportional to the square of the time of the fall,t. A person who is parachuting for the first time is told to wait 12 seconds before opening the parachute. If the person falls 64 feet in 2 seconds, find how far he ...
*July 24, 2015*

**algebra 2**

If an observer is 200 ft from a building and the angle of elevationto the top of a building is 60°,what is the height of the building?
*July 17, 2015*

**Math**

to determine the number of catfish in a pond, a game warden catches 131 catfish, tags them and throws them back into the pond. later, 20 catfish are caught, 10 of them are tagged. How many catfish would the game warden expect to be in the pond? 131/10 20/x
*June 15, 2015*

**maths**

2 apples and 2 mangoes cost as 5 apples and 1 mango. Each mango cost $2.40 Find the cost of 1 apple. How to do this question? Please help me.
*April 28, 2015*

**mathematics**

Tom is 4U Jerry is 1U Ali is 4U+36 279-36=243 243/9=27 27*4=108 (tom) 108-27=81 Answer:a) 27 b) 81
*April 28, 2015*

**Math**

If the scale on a drawing of a house is 1 cm=2 1/2m, what is the length of the house if it measures 3 cm on the scale drawing?
*April 26, 2015*

**Math**

that makes sense, thank you! would last question be divide 150 by 2?
*April 26, 2015*

**Math**

would second be 17:2?
*April 26, 2015*

**Math**

Victoria tossed a coin 30 times and got 17 heads. What is the ratio of heads to coin tosses? What is the ratio of heads to tails? What is the ratio of tails to heads? If victoria tosses the coin 150 times, how many times can she expect to get heads?
*April 26, 2015*

**science help**

Thank you so much!!!!!!!!!!!!!!
*April 26, 2015*

**science help**

Explain how the hooves of the camel are adapted to move in the dessert.
*April 26, 2015*

**maths**

Natalie bought 2 bags and 3 times as many pouches. She spent a total of $368. Each bah cost $24 more than a pouch. How much did 1 pouch cost?
*April 25, 2015*

**chemistry - kinetics**

Understanding the high-temperature behavior of nitrogen oxides is essential for controlling pollution generated in automobile engines. The decomposition of nitric oxide (NO) to N2 and O2 is second order with a rate constant of 0.0796 M−1*s−1 at 737∘C and 0....
*April 23, 2015*

**Math**

Hi! Can someone help me with this? Thanks a bunch! Find the 10th partial sum of the following arithmetic sequence. 0.50, 0.9, 1.3, 1.7.....
*April 17, 2015*

**SS Help!!**

Thank you!
*April 13, 2015*

**SS Help!!**

Abraham Lincoln caused four states to join the Confederacy by ________. :Declaring War :Firing on Fort Sumter*** :Emancipating the enslaved people :Calling for troops What Confederate capital was only about 100 miles from Washington, D.C.? :Richmond, Virginia*** :Lexington, ...
*April 13, 2015*

**SS Help!**

The admission of Missouri as a slave state was controversial in the Senate because :the Senate was pro-slavery :it would create sectionalism :it would upset the balance*** :The Senate was anti-slavery Am I right?
*April 11, 2015*

**physics**

A concave mirror forms a real image twice as large as the object. The object is then moved such that the new real image produced is three times the size of the object. If the image was moved 94.1 cm from its initial position, how far was the object moved? I have no clue how to...
*April 11, 2015*

**Science**

I got it wrong, the answer was A.
*April 7, 2015*

**Science**

What do bone marrow and the epidermis have in common? A) They are both sites of new cell formation B) They both contain structures that assist the body in cooling down if overheating occurs C) They both contain or are associated with sensory neurons D) They are both involved ...
*April 7, 2015*

**Physics**

The current flowing in a solenoid that is 20.9 cm long and has a radius of 2.40 cm and 552 turns decreases from 3.51 A to 1.03 A in 0.250 s. Determine the magnitude of the induced electric field inside the solenoid 1.20 cm from its center.
*April 4, 2015*

**Math**

36 tiles
*March 31, 2015*

**Geometry **

a tire leaves a track in fresh snow. The area of the track is 250 square feet. how many turns does the tire make?
*March 19, 2015*

**English**

the first one is simple and the second one is compound
*March 19, 2015*

**physics**

A taxi hurries for 1 hour 3 minutes wit a constant speed of 118km/hr and then for another 1 hour 9 minutes with a constant speed of 40km/hr. What is its average speed for the total trip?
*March 18, 2015*

**health!**

I had the same questions in my lesson, but #2 is wrong. The answer was false
*March 11, 2015*

**Ap physics**

Rotational Motion/Torque The question says that "A 60.0kg painter is on a uniform 25 kg scaffold supported from above by ropes. There is a 5.0 kg pail of paint to one side, as shown. How far from the left end of the scaffold should the painter stand such that the right ...
*March 11, 2015*

**government**

the title is pol201 Posted by stacey on Sunday, April 13, 2014 at 9:41pm. this might help you.
*February 24, 2015*

**Science**

Three liters of nitrogen combine with 9 L of hydrogen to form 6 L of ammonia. If the molecules of nitrogen and hydrogen have two atoms each, how many atoms of hydrogen and nitrogen are there in one molecule of ammonia?
*February 24, 2015*

**3rd grage math**

marcel wants to make a mobile using only 3-dimensional solids with curved surfaces. based on this attribute, what figures will marcel use on his mobile
*February 18, 2015*

**English**

I answered this on a quiz and got it wrong. For my professor he said the correct answer is: C - logical extension of the information in the body of essay.
*February 13, 2015*

**Physics**

What is the maximum total force exerted on a 71 kg astronaut by her seat during the launch of the Space Shuttle?
*February 12, 2015*

**English HELP!!!!😰😰**

I meant object.
*February 11, 2015*

**English HELP!!!!😰😰**

In prepositional phrases, can the subject be more than one word long????? HELP!!!!!
*February 11, 2015*

**math**

(a) Use a graph of f(x) = sqrt(2x^2+9x+5)−sqrt(2x^2+2x+1) to estimate the value of lim x→∞ f(x) to one decimal place. (b)Use a table of values of f(x) to estimate the limit to four decimal places. (c)Find the exact value of the limit.
*February 11, 2015*

**Physics**

If a 65 kg sprinter can accelerate from a standing start to a speed of 12 m/s in 3 s, what average power is generated?
*February 5, 2015*

**Algebra**

At time t=0, in seconds, a pair of sunglasses is dropped from the Eiffel Tower in Paris. At time t, its height in feet above the ground is given by h(t)=−16t^2+1000. When do the sunglasses hit the ground? Include units in your answer. I got that the height is 1000ft and...
*February 2, 2015*

**college physics**

two forces act simultaneously on a box. one pulls with a force of 12 pounds due south. the other pulls with a force of 8 pounds in a direction 20 degrees north od east. what is the resultant of these two forces?
*February 2, 2015*

**Physics**

What is the gravitational force between two 10 kg iron balls separated by a distance of 0.1 m? How does this compare with the weight of one ball?
*January 27, 2015*

**Physics**

What is the Earth's gravitational force on you when you are standing on the Earth and when you are riding in the Space Shuttle 380 km above the Earth's surface? Answer as a fraction of the surface gravity of Earth. (The Earth's radius is 6400 km.)
*January 27, 2015*

**Physics**

A fully equipped astronaut has a mass of 170 kg. If the astronaut has a weight of 675 N standing on the surface of a planet, what is the acceleration due to gravity on this planet?
*January 22, 2015*

**Chemistry**

Virtually all the nitric acid manufactured commercially is obtained by the ammonia oxidization process. This involves this first step: Ammonia gas combines with oxygen to form nitrogen monoxide and water vapour. a) Write a balanced equation for the reaction 6 NH3 + 4 O2 -> ...
*January 20, 2015*

**Language arts **

Which question should you ask during third reading of the muti-draft reading progress? A. Who is the speaker, or the voice that "Say" the words of the poem? B. how has the work expanded my idea's or my imagination? C. What do the word choices and imagery tell me ...
*January 14, 2015*

**English**

In which sentence contains a predicate pronoun? A. We gave him a standing ovation B. The winner is she. C. Are they coming to our play? D. He was the poet Laureate in?
*January 14, 2015*

**science**

the area drained by a river and its tributaries is called its
*January 12, 2015*

**Fine Art **

Which characteristic best describes Chinese brush paintings? (Points : 3) They depict idealized representations of the human form. They include small touches of gold paint to add decorative detail. They feature a limited variety of brushstrokes in order to create a sense of ...
*January 8, 2015*

**math**

Idk
*January 2, 2015*

**math**

3lbs cost $23.25 6lbs cost $46.50 9lbs cost $69.75 12 lbs cost $93.00 15 lbs cost $116.25 Based on the table,what is the constant of proportionality when using weight to find price?
*December 17, 2014*

**Math**

real funny
*December 17, 2014*

**Math**

someone help please
*December 17, 2014*

**Math**

a. -8 3/8 + 6 1/4 b. 4.2 -(-2.6) c. 2 1.2 - 3(-5 + 7.25) + 5 I don't want the answers, I just want to know how to find the answer.
*December 17, 2014*

**math**

A bolt contained 25 yards of flannel. Nikki used 9 2/3 yards to make holiday decorations. How many yards are left?
*December 16, 2014*

**math**

in a resort town, the number of people employed during any given month, f(x) in thousands, can be modeled by function f(x) = 2.3 sin 30 (x+1) + 5.5, where x represents the month, with january =1 and february =2 and so one
*December 14, 2014*

**physics**

A football punter accelerates a 0.61 kg foot- ball from rest to a speed of 9 m/s in 0.24 s. What constant force does the punter exert on the ball? Answer in units of N.
*December 13, 2014*

**Math**

Give two different combinations of transformations that would transform f(x)=5x+3 into g(x)=15x-12
*December 9, 2014*

**physics help please please please!!!**

A spaceship lands on a new planet. the crew decides to measure the speed of sound in the planets atmosphere. taking a tube with a length of 50 cm, they find that one resonant frequency occurs at 2,520 Hz, and the next resonant frequency at 2,940 hz. what is the speed of the ...
*December 8, 2014*

**Intro-Physics Help Please**

A spaceship lands on a new planet. the crew decides to measure the speed of sound in the planets atmosphere. taking a tube with a length of 50 cm, they find that one resonant frequency occurs at 2,520 Hz, and the next resonant frequency at 2,940 hz. what is the speed of the ...
*December 7, 2014*

**Reading**

Doesn't it seem (abnormal,insubordinate) for a bright young person to show no interest in taking part in any school activities?
*December 5, 2014*

**math **

3x=15
*December 5, 2014*

**Help math**

a ribbon measuring (v+4) feet in length was cut into two pieces in the ratio 3:7. What was the length of the longer piece? answer
*December 4, 2014*

**Biology**

Pod color and pod shape were two other traits Mendel was interested in. Set up a dihybrid cross for these two traits. Note: Green pods are dominant over yellow pods and inflated pods are dominant over constricted pods. -Start off with both parents as heterozygotes/hybrids for...
*December 4, 2014*

**pre-algebra**

The length of a kitchen is 1 1/4 inches. The actual length is 20 feet. What is the scale of the kitchen
*December 3, 2014*

**MATH**

Spencer wants to plant strawberries for his garden. To do this, he has to increase the garden and the fence around it. Spencer decides one side can be twice as big and the other side four times as big. One side measures 7feet long and the other side is 5 feet long. What is the...
*December 1, 2014*

**Algebra**

find the domain and range of y=f(x) {4 if -6</= x< -2 f(x)={absolute value of x if -2</= x< 8 {cubed root of x if 8</= x</= 14 it is piecewise, I am completely lost on how to even set up this function.
*November 24, 2014*

**Math**

I have a peice of lumber that is 18 feet long can 18 prices of lumber make 5 shelves
*November 6, 2014*

**Algebra II**

Hi! I really need help with my homework, but I don't have anybody to ask. The problem asks me to find the vertex, focus, and directrix of the parabola: x^2-12x-48y+276=0. All help is apprectiated! Thank you.
*November 5, 2014*

**MCC**

An investor in the 28% tax bracket is trying to decide which of two bonds to select: one is a 6.5% U.S. Treasury Bond selling at par; the other is a municipal bond with a 5.25% coupon, which is selling at par. Which of these two bonds should the investor select? Why?
*October 29, 2014*

**chemistry**

How many milliliters of a 0.200 M HI solution are needed to reduce 21.5 mL of a 0.365 M KMnO4 solution according to the following equation: 10HI+2KMnO4+3H2SO4 ---> 5I2+ 2MnSO4 +K2SO4+ 8H2O
*October 18, 2014*

**Chemistry 101**

Based on the masses of CaCl2 and Na3PO4 you determine from the periodic table,what mass combining ratio would you predict?
*October 17, 2014*

**us history**

what best summarizes the population decline of native americans.
*October 17, 2014*

**Math**

what is 603kg = ? g. I don't get how to do the problem
*October 14, 2014*

**Art Need help Please**

i need help too
*October 13, 2014*

**Chem Help Please!**

In most cases with GLC the area under the peak as a % of the total area for all peaks is interpreted as representing the % mass of the compound measured in the mixture. Explain why this is only an approximation.
*October 5, 2014*

**English**

In the myth "When Grizzlies Walked Up Right" explain how the bears lived in relation to each other before and after the introduction of the female into their clan. Please help me
*September 28, 2014*

**Chemistry**

Four isotopes of Lead occur naturally: 204Pb (mass = 203.973037 amu) 206Pb (mass = 205.974455 amu) 207Pb (mass = 206.975885 amu) 208Pb (mass = 207.976641 amu) If the percent abundance of 204Pb and 208Pb are 1.400 and 52.40, respectively, what is the percent abundance of 206Pb...
*September 24, 2014*

**math**

A certain pencil comes 4 in a package for $.75. Find the cost of 24 pencils.
*September 24, 2014*

**algebra**

Jesse and Larry entered a pie eating contest. Jesse ate 5 less than twice as many pies as Larry. They ate a total of 16 pies. How many pies did each eat.
*September 24, 2014*

**Algerbra**

Human body temperatures are normally distributed with a mean of 98.20°F and a standard deviation of 0.62°F if 19 people are randomly selected find the probability that they're mean by temperature will be less than 98.50 degrees Fahrenheit
*September 16, 2014*

**Physics Help**

Divers for many years have dived into the ocean from the cliffs of Acapulco, a distance of 35 m above the water. How fast are the divers moving when they hit the water? If the divers travel a distance of 5 m through the water before momentarily coming to rest, what ...
*September 11, 2014*

**Physics Help**

Freshly picked cucumbers are dropped into a bin from a height of 1.25 m above the bottom of the bin. Assuming that the bin is empty, how fast is a cucumber going when it hits the bottom of the bin? How much time does it take the cucumber to fall to the bottom of the bin? Thanks!
*September 11, 2014*

**Physics Help**

the question is like this! It doesnt have any units.
*September 11, 2014*

**Physics Help**

1) two cars start at the same location and accelerate for the same amount of time. if one car has twice the acceleration of the other, how will the final speeds of the cars compare? by how much farther will the faster car outdistance the slower car?
*September 11, 2014*

**math **

the ratio relationship betweeen 19:7 and 7 to 26
*September 11, 2014*

**Physics Help Please**

1) two cars start at the same location and accelerate for the same amount of time. if one car has twice the acceleration of the other, how will the final speeds of the cars compare? by how much farther will the faster car outdistance the slower car?
*September 11, 2014*

**Chm Help Please!!!**

you wish to purify by distillation a material that has a boiling point of 205 C and reacts with air but this material will decompose if heated above 150 C. How would you set up the system to distill this material? Thanks!
*September 9, 2014*

**physics**

A bush baby, an African primate, is capable of leaping vertically to the remarkable height of 2.3 m. To jump this high, the bush baby accelerates over a distance of 0.18m while extending the legs. The acceleration during the jump is approximately constant. What is the ...
*September 9, 2014*

**Chemisty 132**

How much energy (in kilojoules) is needed to heat 5.55g of ice from -13.5 ∘ C to 26.5 ∘ C. The heat of fusion of water is 6.01kJ/mol, and the molar heat capacity is 36.6 J/(K⋅mol) for ice and 75.3 J/(K⋅mol) for liquid water.
*September 7, 2014*

**Physics **

Two 0.75m -long pendulums hang side by side. The masses of the pendulum bobs are 65g and 85g . The lighter bob is pulled aside until its string is horizontal and is then released from rest. It swings down and collides elastically with the other bob at the bottom of its arc.To ...
*September 7, 2014*

**Chemisty 132**

How much energy (in kilojoules) is needed to heat 5.55g of ice from -13.5 ∘ C to 26.5 ∘ C. The heat of fusion of water is 6.01kJ/mol, and the molar heat capacity is 36.6 J/(K⋅mol) for ice and 75.3 J/(K⋅mol) for liquid water.
*September 7, 2014*

**Chemistry **

a solution of OH- ions is added to a beaker of pure water at 25 C, to a final concentration of 872 nM. Calculate the pH of the solution. I know that pH=-log[H+], but I'm still really confused as to how to convert the nM to M and how to solve this problem.
*September 5, 2014*

**history**

i have to have a 500 word essay i have 300 i need some extra help What options did Native Americans have at their disposal? What means of resistance and accommodation did different Indian groups choose, and why do you think they made those choices? What was the possible range ...
*September 2, 2014*

**physics**

(a) What is the acceleration of gravity on the surface of the moon? m/s2 (b) What is the acceleration of gravity on the surface (or outer limit) of Uranus? The mass of Uranus is 8.68 ✕ 1025 kg and its radius is 2.33 ✕ 107 m.
*July 21, 2014*

**PSY/410**

Can anyone help with this sheet i am struggling too.
*July 9, 2014*

**us history**

The Quasi War was waged between the United States And?
*July 8, 2014*

**social studies**

It's says complete the sentence. When the suspect appears in court,her case will be judged by a group of her?
*July 6, 2014*

**algebra**

The scientific notation 3.14 x 10 -3 has what value
*July 2, 2014*