Friday

April 29, 2016
Total # Posts: 95,892

**chemestry**

Calculate the number of moles of NH3 that can be formed from the complete reaction of 0.30 moles of N2 according to the equation N2 + 3H2 → 2NH3
*March 24, 2016*

**Math**

What is the maximum perimeter of an isosceles triangle whose side length are 5x+20,3x+76, and x+196?
*March 24, 2016*

**History**

Illinois
*March 24, 2016*

**math**

list all of the intergers there are between 13 & 50
*March 24, 2016*

**Physics**

A child twirls a 0.15 kg mass attached to the end of a 15 cm long piece of string. He twirls the mass around at 2.4 revolutions per second in a vertical plane. Calculate the tension in the string when the mass is at the top of the circle.
*March 24, 2016*

**Physics**

how many revolutions per minute would a 5.8 metre radius ferris wheel need to make for the passenger to feel weightless at the topmost point? mass of passenger is 55.00 kg.
*March 24, 2016*

**Physics**

an electric motor accelerates a grinding wheel at constant acceleration from 112 rev/min to 295 rev/min in 13 seconds. how many revolutions did it make in this time?
*March 24, 2016*

**Statistics**

What are some parallels and differences between regression models and time series models? Share some use cases to add to your discussion of the similarities and differences.
*March 24, 2016*

**Statistics**

what is seasonality in a time series and how could it impact modeling a response over time?
*March 24, 2016*

**sunnyvale**

4 boys went to the park. 3 of them bought ride tickets for x dollars, plus a game pass for 10dollars.the other one just bought a ride ticket. write an expression
*March 23, 2016*

**Engineering Accounting**

A car may be purchased with a $3500 down payment now and 72 monthly payments of $480. If interest rate is 12% compounded monthly, what is the price of the car?
*March 23, 2016*

**PHYSICS Centrifugal force**

someone swings a bucket of water in a vertical circle. Describe the water's motion to another person? or How would you? & also how to explain the motion of the water to them? How come the water didn't fall on the persons head? A: Centrifugal force causes the water to ...
*March 23, 2016*

**Math**

Mike drank more than half of his glass of juice. What fraction of juice could mike have drank?
*March 23, 2016*

**AP Chemistry**

A solution is prepared by titrating a 100.0 mL sample of 0.10 M HF (Ka = 7.2 × 10-4) with 0.10 M NaOH a. Does the solution contain a strong acid with a strong base, a strong acid with a weak base, a weak acid with a strong base, or a weak acid with a weak base? b. ...
*March 23, 2016*

**Math**

Ruth and tom have the same point driving in opposite directions. Traffic conditions enable Tom to average 10 km/hr more than Ruth. After two hours, they are 308 km apart. Find the speed (Rate) of each person.
*March 23, 2016*

**physics**

A 20.0 gram bullet exits the rifle at a speed of 985 m/s. The gun barrel is 0.80 m long. What was the force(N) during the rocket’s launch? (Hint: note the units of the bullet!)
*March 23, 2016*

**Math**

Nevermind I got it it's 27 cubic centimeters. thanks anyway
*March 23, 2016*

**Math**

A cube has a surface area of fifty-four square centimeters. What is the volume of the cube?
*March 23, 2016*

**Biology (Please Help!)**

When we spin around in one place and stop, we feel as though we are still moving. This feeling is caused by continued Select one: A. transmission of nerve impulses from cochlea to auditory nerve B. movement of fluid against cochlea C. vibrations of tympanum D. movement of ...
*March 23, 2016*

**Biology**

When we spin around in one place and stop, we feel as though we are still moving. This feeling is caused by continued Select one: A. transmission of nerve impulses from cochlea to auditory nerve B. movement of fluid against cochlea C. vibrations of tympanum D. movement of ...
*March 23, 2016*

**PHYSICS**

A SUPERSONIC FIGHTER JET FLYING HORIZONTALLW AT HEIGHT OF 4KM ABOVE THE GROUND AND AT A SPEED OF 400M/S FIRES A ROCKET VERTICALLY DOWNWARD. THE ROCKET IS RELEASED WITH AN INITIAL SPEED OF 80M/S CALCULATE THE TIME OF FLIGHT OF THE ROCKET AND THE HORIZONTAL DISTANCE FROM THE ...
*March 23, 2016*

**English**

I need one for learning though
*March 23, 2016*

**English**

I'm writing an essay in English on whether learning always has a positive effect on a persona life. I said that it does. I need another main idea. My first one is learning can help us learn from our mistakes. I also need an example from literature or history. Please help!!!!
*March 23, 2016*

**?**

What skills should a messenger have
*March 23, 2016*

**Health**

Thanks!
*March 23, 2016*

**Health**

Which activity is an excellent strategy to help maintain strong teeth and healthy gums? 1.) Treating gum disease 2.) Treating tooth decay 3.) Wearing a mouth guard 4.) Eating a well rounded, proper diet I think it's No. 3
*March 23, 2016*

**Statistics**

How do the 3rd grade boys’ weight in Principal Ben’s school compare to the national average (mean weight = 90, sd =15)? Provide the IV, DV, and best method of analysis
*March 23, 2016*

**Science**

What if a student gets a 65 on 1 test and 100% on 4 tests? What will there grade be?
*March 23, 2016*

**Physics**

cant be done
*March 23, 2016*

**physics**

Fifty liters of gas is kept at a temperature of 200 K and under pressure of 15 atm. The temperature of the gas is increased to 400 K. The pressure is decreased to 7.5 atm. What is the resulting volume of the gas?
*March 23, 2016*

**math**

A rectangle made of square tiles measures 10 tiles long and 8 tiles wide. What is the width of a similar rectangle whose length is 15 tiles? is 12 tiles correct
*March 23, 2016*

**Calculus**

An airplane is flying above an observer standing on the ground. At the moment it passes overhead, the observer judges by its apparent size that the airplane’s altitude is 30,000 feet. It takes 50 seconds for the plane, moving in a straight, horizontal line, to move ...
*March 23, 2016*

**Calculus**

Im sorry this is calc
*March 23, 2016*

**Physics**

An airplane is flying above an observer standing on the ground. At the moment it passes overhead, the observer judges by its apparent size that the airplane’s altitude is 30,000 feet. It takes 50 seconds for the plane, moving in a straight, horizontal line, to move ...
*March 23, 2016*

**Physics**

An equilateral triangle initially has side length equal to 17 cm. Each vertex begins moving in a straight line towards the midpoint of the opposite side at a constant rate of 2.3 cm/s, continuously forming progressively smaller equilateral triangles until it disappears. At ...
*March 23, 2016*

**maths**

a+b/a-b + a²-4b²/a²-b² - a-3b/a+b How to solve this question and how to take the LCM of followings?.
*March 23, 2016*

**Social Studies**

F^ck you
*March 23, 2016*

**Mathametical Literacy,Agricultural Science,History,Geography,English,Life Orientation and Setswana**

,Mathametical Literacy,Agricultural Science,History,geography,life Orientation,English and Setswana
*March 23, 2016*

**Mathametical Literacy,Agricultural Science,History,Geography,English,Life Orientation and Tshivenda**

Google it.
*March 23, 2016*

**algebra 1 or pre algebra**

Expand the function: x(x+4)(x-4)/(x+1)(x-6) Your roots are -4,0,4 Therefore, All real numbers except -1 and 6 are not in the domain of the function.
*March 23, 2016*

**Chemistry**

uiuiuiuiuiuiuiuiuiuiyu
*March 23, 2016*

**Math**

20*3/4 = 15 pitchers or you can look at it this way: 3/4 is 75% and 75% of 20 is 15.
*March 23, 2016*

**business math**

The mark up percentage M, in decimal form, is gross profit P divided by cost C. M = P/ C M * 100 will change the decimal to a percentage.
*March 22, 2016*

**MCC**

3. (Consumption and Saving) Supposed that consumption equals $500 billion when disposable income is $0 and that each increase of $100 billion in disposable income causes consumption to increase by $70 billion. Draw the graph of the consumption function using this information. ...
*March 22, 2016*

**math**

360
*March 22, 2016*

**math**

Can you check my answers please? Thank you Ben is greeting customers at a music store. Of the first 20 people he sees enter the store, 9 are wearing jackets and 11 are not. What is the experimental probability that the next person to enter the store will be wearing a jacket? ...
*March 22, 2016*

**Math**

Marissa bought 6 fewer pints of soda than orange juice. How many cups of soda did she buy?
*March 22, 2016*

**math**

Why are ocean levels not greatly affected
*March 22, 2016*

**math**

A rectangle has a width of 4 inches and a length of 6 inches. A similar rectangle has a width of 12 inches. What is the length of the similar rectangle?
*March 22, 2016*

**math**

DIYtheme parksBopen Dunkin Donuts Dunkin
*March 22, 2016*

**Math**

While bowling with friends, Brandy rolls a strike in 5 out of 10 frames. What is the experimental probability that Brandy will roll a strike in the first frame of the next game? Enter your answer as a simplified fraction. Is it 5/10 probability and 5/10 simplified is 1/2 ...
*March 22, 2016*

**math**

A rectangle has a width of 4 inches and a length of 6 inches. A similar rectangle has a width of 12 inches. What is the length of the similar rectangle?
*March 22, 2016*

**Math**

About. 7.5 gallons of water filled up 1 cubic foot of space. How many gallons of water will fill a goldfish pool shaped like the prism shown. 3 ft for length 3.5 ft for width 1.5 ft for height
*March 22, 2016*

**math**

Jason, Erik, and Jamie are friends in art class. The teacher randomly chooses 2 of the 21 students in the class to work together on a project. What is the probability that two of these three friends will be chosen? A. 1/105 B. 1/70 C. 4/50 D. 34/140
*March 22, 2016*

**math**

xvb
*March 22, 2016*

**math**

A special diet is intended to reduce systolic blood pressure among patients diagnosed with stage 2 hypertension. If the diet is effective, the target is to have the average systolic blood pressure of this group be below 150. After six months on the diet, an SRS of 28 patients ...
*March 22, 2016*

**Probability and statistics**

pp
*March 22, 2016*

**Physics**

A sports car is accelerating up a hill that rises 17.0° above the horizontal. The coefficient of static friction between the wheels and the road is µs = 0.79. It is the static frictional force that propels the car forward. (a) What is the ...
*March 22, 2016*

**physics**

A 9-kg block is held by a pulley system shown in fig. What force must the person exert in the following cases: a) to hold the block at rest. b) to lower it at 2m/s. c) to raise it with an acceleration of 0.5 m/s2? Ignore the mass of small pulley. Answer Thi
*March 22, 2016*

**math**

210
*March 22, 2016*

**math**

A used guitar is on sale for $280. Derek offers the seller 3/4 of the advertised price. How much does Derek offer for the guitar? IS $240 correct?
*March 22, 2016*

**math**

One of the standard telephone numbers for directory assistance is 555−1212. How many different permutations of this telephone number are possible?.
*March 22, 2016*

**math**

for the first one is it 18.75 hours
*March 22, 2016*

**math**

The Fernandez family drove 273 miles in 5.25 hours. How far would they have driven at that rate in 4 hours? A rectangle made of square tiles measures 10 tiles long and 8 tiles wide. What is the width of a similar rectangle whose length is 15 tiles? While bowling with friends, ...
*March 22, 2016*

**math**

A bag contains 8 white marbles and 2 black marbles. You pick out a marble, record its color, and put the marble back in the bag. If you repeat this process 45 times, how many times would you expect to remove a white marble from the bag?
*March 22, 2016*

**LOCAL STANDARDS AND REGULATIONS**

Local, state, and provincial governments may have specific regulations that apply to the physical space in a day care center. A typical requirement in these regulations is a minimum of _______ square feet of usable play space for each child. A. 35 B. 24 C. 10 D. 18
*March 22, 2016*

**LINCENSING ACCREDIDATION AND CERTIFICATION**

To obtain a credential from _______, it's acceptable to have received your training through independent study. A. the Child Development Associate training program B. the American Montessori Society C. your State Department of Education D. the Association Montessori ...
*March 22, 2016*

**HOW TO START YOUR OWN CHILD DAY CARE FACILITY**

Which one of the following is an advantage of setting up a family day care home? A. You can obtain a tax-exempt status. B. You can enroll as many children as you wish. C. You'll be eligible for federal aid. D. Your own child or children will have children to play with.
*March 22, 2016*

**math**

Rebecca rolls two number cubes each with sides that are labeled 1 to 6. What is the probability that both number cubes show a 1?
*March 22, 2016*

**math**

Wendy noticed that out of 345 cars that passed her house, 56 were SUVs. About how many SUVs could she expect to pass by if 2,100 cars were to pass by her house?
*March 22, 2016*

**Chemistry**

for the redox reaction given in the chemical equation Pb(OH)4^2- (aq) + ClO- (aq) --> PbO2 (s) + Cl- (aq) For the oxidation half reaction I got Pb(OH)4^2- (aq) --> PbO2 (s) + 2H2O (l) + 2e- For the reduction half reaction I got 2e- + 2H2O(l) + ClO-(aq) --> Cl- (aq) + ...
*March 22, 2016*

**Chemistry**

Determine the pH of a 0,050M solution of lactic acid, CH3CH(OH)COOH (ka = 1.4x10^-4) and delta Grxn^o at 25 degrees C. Determine pH and delta Grxn^o at 25 degrees C I'm having trouble on getting started.
*March 22, 2016*

**Tax**

The corp has domestic taxable income of $400,000 and foreign-source taxable income of $200,000. Their U.S. tax on worldwide income is $204,000. The corp paid foreign income taxes of $65,000. What is their foreign tax credit on their US income tax return?
*March 22, 2016*

**Tax**

A corp has domestic taxable income of $400,000 and foreign-source taxable income of $200,000. Their U.S. tax on worldwide income is $204,000. The corp paid foreign income taxes of $75,000. What is their foreign tax credit on their US income tax return?
*March 22, 2016*

**Tax**

The Smiths son, Jake, is 19 and a full-time student in his second year of college. Jake paid $5,650 in tuition during 2015, and another $650 for textbooks. The Smiths are claiming Jake as a dependent. Their taxable income is $13,000, and their tax liability before credits is $...
*March 22, 2016*

**chemistry **

what type of a ligand would 18 crown 6 ether be? hexadentate?
*March 21, 2016*

**PHYSICSS HELP**

i cant post it but its a man who is pulling a mass and the mass is hanging from a pulley and he is in a higher position not on the floor
*March 21, 2016*

**Geography**

I dont really understand the question
*March 21, 2016*

**Geography**

How is the United Nations able to impact international political relations of sovereign nations? What gives it that power?
*March 21, 2016*

**Geography**

I put that they have helped foster peace and economic development throughout the world
*March 21, 2016*

**Geography**

What are some of the humanitarian or social functions of the united nations
*March 21, 2016*

**Geography**

What are the nations on the Security Council and why were they chosen as members? US,Russia,UK,France,China I'm not sure why they were chosen.
*March 21, 2016*

**Geography**

Why was a charter created for the United Nations?
*March 21, 2016*

**Geography**

What is surprising of the geography of the European Union
*March 21, 2016*

**Math**

Is it easier to evaluate n^0 w^0 for n=-2 and w=3 by simplifying first or by substitute first ? explain
*March 21, 2016*

**Physics**

(a) N=m(g-a)= 65(9.8-2.4)= 481 Newtons (b) 2.4 m²/s (c) 9.8 m²/s (d) a+g
*March 21, 2016*

**Math **

A model car has a scale of 1:24, where the model dimensions are in the numerator and the actual dimensions are in the denominator. if the tires on the model have a diameter of 1/2 inch, how long is the diameter of an actual tire on the car?
*March 21, 2016*

**Spanish**

B. Sesenta. Sesenta is 60 and there are 60 minutes in a hour. Hope I helped!
*March 21, 2016*

**Physics**

v₁=0.280 m/s; t₁ =3.50 s; F₁=550 N v₂=0.360 m/s; t₂=3.00s; F₂=560 N ma₁ =F₁-F(fr) =F₁-μN =F₁- μmg ma₂= F₂-F(fr)= F₂ -μN =F₂ - μmg v₁= a₁t₁ => a₁=v...
*March 21, 2016*

**Physics**

F(fr)=ma=mv²/R= = 862•(12.4)²/66.7 = 160.25 N
*March 21, 2016*

**Physics**

a(c) = v²/R= =(1.28)²/0.382 = 4.29 m²/s
*March 21, 2016*

**algebra i**

Ohh, thank you
*March 21, 2016*

**algebra i**

Thank you, but why wouldn't the 4 be square rooted
*March 21, 2016*

**algebra i**

I'm a little confused at how to do this problem, could you check this to make sure I have it done right ? (x-4)^2 = 625 (undo square by square root) (x-2) = 25 (x+2) = 25 x = 27 x = 23
*March 21, 2016*

**Pre-Algebra**

The layer cake has both vanilla and chocolate frosting. What percent of the surface area of the cake (not including the bottom) is chocolate? Round your answer to the nearest tenth of a percent.
*March 21, 2016*

**Physics**

ω=ωₒ+εt ε=( ω-ωₒ)/t= =(24.2-7.07)/6.42 = 2.67 rad/s
*March 21, 2016*

**physics**

ΔKE=Work=Fs= =1.6x10^-15 x 0.071= =1.136x10^-16 J
*March 21, 2016*

**Algebra**

The path of a baseball after being hit is given by the function f(x)= -.007x^2+x+4 where f(x) is the height of the baseball (in feet) and x is the horizontal distance from home plate (in feet). at what time will the baseball reach the maximum height?
*March 21, 2016*

**algebra 1**

It was wrong it is c
*March 21, 2016*