Saturday

October 10, 2015
Total # Posts: 556

**Physics**

I have a question about a vector addition problem using the polygon method. Vector 1 has a magnitude of .1 and theta of 30 degrees. Vector 2 has a magnitude of .2 and a theta of 90 degrees. Vector 3 has a magnitude of .3 and a theta of 225 degrees. I'm confused because if ...
*September 29, 2015*

**Algebra**

Simplified it's 5n-4
*September 29, 2015*

**Math**

I suppose for 6x200 it's like 6x2x100?
*September 28, 2015*

**Physics**

6. A car traveling 64 km/hr (40 mi/h) brakes suddenly to avoid a dog crossing the road. It accelerated at a rate of -1350 mi/h2. What was its speed after 0.5 min?
*September 28, 2015*

**math**

The hundredth and thousandth places.
*September 28, 2015*

**Math **

An auditorium contains 315 occupied seats and was 7/9 filled. How many empty seats were there?
*September 28, 2015*

**Chemistry**

What happens when you mix ammonium chloride and sodium nitrate? I don't need any equations, just what would you see when you mix them together Thanks~
*September 22, 2015*

**math**

Well the smallest prime is 2, so now you've got 0.2 something If the hundredth digit is twice the tenth, then it should be 4. But the part about the GCF being 18 and 27 I don't get
*September 22, 2015*

**Algebra**

6.24 seconds. 15.6/2.5 = 6.24
*September 22, 2015*

**Algebra**

Um, I suppose it's (-0.7)-(-2.5)
*September 22, 2015*

**Algebra**

Height of K2 - 11,194 = height of Mt. Kenya. You can't solve this equation, there's not enough information given.
*September 22, 2015*

**unisa**

for anyone who wants to answer this. The person is probably talking about this articletheguardian(dot)com/world/2014/apr/07/india-elections-nehru-gandhi-dynasty
*September 22, 2015*

**Physics: Please help!**

I can't figure this out at all...Can someone please explain it to me? It has been claimed that an insect is the best jumper in the animal kingdom. This insect can accelerate at 3950 m/s2 over a distance of 2.3 mm as it straightens its legs. (a) Assuming a uniform ...
*September 21, 2015*

**Physics**

I cannot figure out this question, and it would be greatly appreciated if someone could help me out! :) It has been claimed that an insect is the best jumper in the animal kingdom. This insect can accelerate at 3950 m/s2 over a distance of 2.3 mm as it straightens its legs. (a...
*September 21, 2015*

**social studies**

Mesoamerica
*September 21, 2015*

**social study**

that's called commerce
*September 21, 2015*

**Math**

Can some please explain what I have to do to get the answer? An airplane passes directly over Seneca High School. A student at Cherokee High School, which is 4.3 miles away, finds the angle of elevation of the plane to be 19°. Find the altitude of the plane.
*July 16, 2015*

**Geometry**

Angles A and C are complementary, and angles C and B are supplementary. If Angle A = 45 degrees, what is the measure of angle B?
*July 16, 2015*

**Geometry**

YW bisects angle XYZ. The measure of angle XYZ = 80 degrees. Find the measure of angle XYW
*July 16, 2015*

**math**

Yeah thank you Pete...
*April 30, 2015*

**math**

I think it's D. Please answer still. Thanks
*April 30, 2015*

**math**

What will the graph look like for a system of equations that has no solutions? A. The lines will be perpendicular. B. The lines cross at one point. C. Both equations will form the same line. D. The lines will be parallel. Is the answer B?? Thank you
*April 30, 2015*

**chemistry **

25.0 ml of 15% NH4NO3 solution is diluted to 300.0 ml. What is the concentration of the diluted solution? .15% x 25=3.75ml Do I divide by 300ml and that's my answer?
*April 16, 2015*

**math**

A bus left the bus station with 90% of the seats full. After six stops, a total of 26 passengers got of the bus and 4 passengers boarded the bus. Now, 35% of the seats are full, How many seats are there on the bus ? 35%*2= 70%= 2*22=44 seats.
*March 17, 2015*

**Chemistry**

how much vinegar produces 0.240 moles of acetic acid?
*March 10, 2015*

**math**

An antique clock takes 5.5 seconds to chime at 3 o'clock. How long does it take to chime at 9 o'clock ? 5.5/2= 2.75x8=22seconds
*March 4, 2015*

**Language arts**

yeah the answer is c :)
*February 27, 2015*

**Science**

California's volcanoes formed as the result of what type of plate boundary?
*February 6, 2015*

**History help?**

1. is D. 2. C, well thats where it was started in NY, but it could be B because it had spread out to let people know about rights that women should have. I'll say B ?
*January 21, 2015*

**History help?**

1.Southern states began to leave the Union not long after this event: a.Lincoln read and established the Emancipation Proclamation b.the fighting at Fort Sumter in South Carolina c.The Battle of Gettysburg was lost by the South d.the election of Abraham Lincoln 1. A or B? I ...
*January 21, 2015*

**Math**

thanks!
*January 6, 2015*

**Math**

You can buy one 10 pack of AAA batteries for $5.49 and get one battery free, or you can buy two 4 packs for $2.98. Which has the lower unit price per battery? please help and show me the steps, thank you
*January 6, 2015*

**Chemistry**

A sample of gas (2.0 mmol) effused through a pinhole in 5.0 s. It will take __________ s for the same amount of to effuse under the same conditions.
*December 31, 2014*

**Math**

NO /' I I HEAT YOU AND THIS
*December 11, 2014*

**Science**

Which of the following electromagnetic waves is not used for communication?
*November 23, 2014*

**Chemistry**

Consider the following reaction: 4NH3(g) +5O2(g) -->4NO(g) +6H2O(g) Suppose we have two flasks connected by a stopcock. In one flask, we have 2.0L of NH3(g) at a pressure of .500 atm. In the other flask, we have 1.00L of O2(g) at a pressure of 1.5atm. When the stopcock is ...
*October 29, 2014*

**Math**

A) P is approximately (0.883, 0.469), is a point on the unit circle with angle 28 degrees estimate the following. Sin 152 degrees = Cos 152 degrees = please help me step by step
*October 24, 2014*

**chemistry**

When 2016 J of heat energy is added to 49.5 g of ethanol, C2H6O, the temperature increases by 16.6 °C. Calculate the molar heat capacity of C2H6O. 49.5g = 2.98mols C=q/n*temperature change in Celsius 2016/2.98*16.6
*October 19, 2014*

**mathematic**

The local skateboard company reports that when they produce and sell n skateboards in a week, the cost is represented by the modelc=850+76n . The revenue is represented by the model r=150n. If both C and R are in dollars, write an equation for the profit from producing and ...
*September 30, 2014*

**physics**

A spacecraft is in orbit close to the moon's surface. The centripetal acceleration is 1.6 m/s^2. If the radius of the moon is about 1.7 x 10^6 m, determine: a)the orbital speed b)the period of the orbit
*September 27, 2014*

**science**

does kidney transplant always succesful
*July 24, 2014*

**Physics**

A 42.0 kg swimmer with an initial speed of 1.50 m/s decides to coast until she comes to rest. If she slows with constant acceleration and stops after coasting 2.00 m, what was the magnitude of the force exerted on her by the water?
*July 2, 2014*

**physics please help!!**

find the temperature of the hot reservoir of a carnot engine that has QH=1575j that does work on a 200kg crate, caussing it to go from rest to a velocity of 2.35m/s along the horizontal frictionless surface. Tc=100K
*June 26, 2014*

**math please help**

Limit as x approaches zero of (sinx-(x^3/6)/x^5)
*June 18, 2014*

**Maths**

For a) you just need to divide that amount of space each girl has by 100 and times it by the total area of the house they are renting. then you times the percentage you get by that cost of rent. eg: Laura = 20/100x50 = 40% = 40/100*900 = $360 For b) you calculate their food ...
*May 29, 2014*

**Maths**

Alison, Caitlin and Laura are sharing three bedroom two bathroom house at $900 rent per fortnight. Their weekly food bill is $210 per week and they save $50 per week for electricity and water. They share the rent based on the size of their bedroom and bathroom and share other ...
*May 29, 2014*

**ALGEBRA! URGENT. Check Answers!**

Thank you!
*May 27, 2014*

**ALGEBRA! URGENT. Check Answers!**

So number 1 and 2 are correct? and Number 3 would be changed to -2x^2 - 2x + 5
*May 27, 2014*

**ALGEBRA! URGENT. Check Answers!**

1. 18x^2 + 6 + 4x - 15x^2 - 4 + 13x Answer: 3x^2 + 17x + 2 2. 3x^2 + 6 - 2x + 5x - 4x^2 + 9 Answer: -x^2 + 3x + 15 3. 3x^2 + 5x - 7x + 3 - 5x^2 + 2 Answer: -2x^2 + 2x + 5 4. In the expression -7x - 3x^2 + 5. What is the coefficient of x? Answer: I think it's 7 or -7 Thanks!
*May 27, 2014*

**Math**

Thank you. I forgot the brackets
*May 9, 2014*

**Math**

What's the answer to 1^2-(2-x)^2=2^2-x^2 The answer said x =7/4 But no matter how I tried. I couldn't get that
*May 9, 2014*

**Paper Writing**

I've looked through that, but it doesn't say the proper way to differentiate between each lecture. I was thinking maybe the date or the title of the lecture, but I'm not sure and I didn't see it specifically stated.
*April 18, 2014*

**Paper Writing**

MLA
*April 18, 2014*

**Paper Writing**

I am writing a paper where I cite multiple lectures by the same professor. How do I format the intext citations?
*April 18, 2014*

**Math**

I mean t -336x^3+ 288x
*February 13, 2014*

**Math**

How do you factor out the GCF from each polynomial in this kind of problems -336x3 + 288x
*February 13, 2014*

**Math**

A simple calculation will reveal that 72 has 12 factors including 1 and 72. How many natural numbers less than 100 have 12 such factors
*February 8, 2014*

**Math**

A simple calculation will reveal that 72 has 12 factors including 1 and 72. How many natural numbers less than 100 have 12 such factors
*February 7, 2014*

**Math**

Peter notices that the teenage students who are members of the math club have ages whose product is 611520. How many members does the club have? Extensions: Is it true that whatever number replaces 611520 that this problem has a unique solution? Suppose the club included 12 ...
*February 7, 2014*

**Precalculus**

Let f(x)=e^x. Compute the average rate of change over the interval [ln3, ln4].
*January 27, 2014*

**chemistry**

Question: Consider this molecular-level representation of a gas. There are: 5 orange gas particles 6 blue gas particles 3 green molecules of gas (two particles attached together) If the partial pressure of the diatomic gas is 0.510 atm, what is the total pressure? I have tried...
*December 8, 2013*

**English (phrasal modals)**

So I am correct on the first one because "could be" is not a phrasal modal. "Could" is just a single-word modal.
*November 19, 2013*

**English (phrasal modals)**

Zach used to work at an independent record label. Negotiating could be exciting, but he was supposed to slant everything in the label’s favor. Some reps used questionable tactics. He couldn’t look at himself in the mirror if he treated people like that. First ...
*November 19, 2013*

**chemistry**

1. A website promoting the use of alternative energy vehicles and hybrid technologies claims that, \"A typical automobile in the USA uses about 40 gallons of gasoline every month, producing about 750 lbs of carbon dioxide.\" To determine the truth of this statement, ...
*November 17, 2013*

**Calculus Antiderivative Problem**

An object moves along a coordinate line with acceleration a(t)=(t+2)^3 units per second per second. a). The initial velocity is 9 units per second. The velocity function is v(t) = b).The initial position is 2 units to the right of the origin. The position function is x(t) =
*November 8, 2013*

**Calculus Antiderivative Problem**

A car traveling at 46 mph decelerates at 21 feet per second per second. a). How long does it take for the car to come to a complete stop? b). What distance is required to bring the car to a complete stop? An
*November 8, 2013*

**English**

I just can't think of anything to write about from all of those words I don't know how to start it
*October 8, 2013*

**English**

Make a story with these words : climb,explode,sing,bounce,fly,cereal,bouncing castle,bomb,rainbow,hippy,ameriican farmer,superhero,mentally unstable man
*October 8, 2013*

**History**

Thank you ever so much ms.sue xxx mwahhh
*October 8, 2013*

**History **

Give me a paragraph on patricians villas from Rome
*October 8, 2013*

**History**

Describe a patrician villa
*October 8, 2013*

**Check my answer plz!!**

It's all right well done :)
*October 8, 2013*

**Anthropology**

What are some examples of careers for Prehistoric Archaeologists?
*August 21, 2013*

**Maths**

At 7pm the outdoor temperature was -12degrees celsius. By 11pm the temperature in degrees celsius had dropped x degrees celsius. Which expression represents the temperature reading at 11pm. a -12-x b -12+x c-12 d -12x e 12 a is my answer A total of m players came to soccer ...
*August 14, 2013*

**math**

There is a jar of 16 marbles. 4 red, 7 blue and 5 green. 1) What is the probability of selecting a red marble, REPLACING it, and then selecting a blue marble. 2) What is the probability of selecting a red marble, then SETTING IT ASIDEm then selecting a blue marble?
*May 24, 2013*

**College Chemistry 104 **

Students are attempting to construct a battery in the laboratory that will light up a light bulb. Compare the following lists prepared by students and determine which student will not be able to successfully build a "battery" that will light up the bulb. Student 1 ...
*May 10, 2013*

**MATH Calculus Homework PLEASE HELP!**

Let T be the triangle 1≤x≤2, 0≤y≤3x-3. Find the volume that results by rotating the triangle T around the line x=-1.
*May 9, 2013*

**MATH Calculus Homework #2**

Let T be the triangle 1\le x\le 2, 0\le y\le 3x-3. Find the volume that results by rotating the triangle T around the line x=-1.
*May 9, 2013*

**MATH Calculus Homework**

Oh I forgot about the ± sign. THANK YOU!!
*May 9, 2013*

**MATH Calculus Homework**

Why is g(x)=-sqrt(4x)?
*May 9, 2013*

**MATH Calculus Homework**

I sorry but I don't undestand. What would be f(x) and g(x)?
*May 9, 2013*

**MATH Calculus Homework**

Find the area of the region between the curve y^2=4x and the line x=3.
*May 9, 2013*

**MATH Calculus Homework**

First off, thank you answering my question. I just have one question. So does it matter which method we use? I am just trying to find a better way of understanding this problem from a visual perspective.
*May 9, 2013*

**MATH Calculus Homework**

Let R be the region between the graph of y=x3 and the x-axis, and between x=0 and x=1. Compute the volume of the region obtained by revolving R around the y-axis
*May 9, 2013*

**Meteorology**

What weather word has the letters pedtidnw
*April 18, 2013*

**Probability**

It's the floor function of(n+1)p . (n+1)p = 2.6 and the floor is therefore 2.
*March 31, 2013*

**Probability**

Let X be the number of successes in 25 independent trials with probability 1/10 of success in each trial. Let m be the most likely value of S. Find m.
*March 31, 2013*

**American History**

What principles of American foreign policy did the Berlin airlift put into action? What do you think might have happened if the U.S. and Britain had not tried the airlift or if the airlift had failed?
*March 17, 2013*

**Morphemes**

My professor gave an example: cats - /cat/s /(2 morphemes). And said the s is another morpheme. Is sitting - sit/ting ? Is runners - run/ner/s?
*March 12, 2013*

**Morphemes**

Please check these morphemes' divisions. 1)mice -/mice/ (1) 2)sitting - /sitting/ (1) 3) punches - punch/es (2) 4)runners - /runner/s/ (2) 5)firefighters - fire/fight/ers (3) 6) Automobile - auto/mobile (2) 7)Chart - /chart/ (1) 8)horseshoe - horse/shoe (2) 9)sees - /sees...
*March 12, 2013*

**Phonemes**

I'm not sure what's wrong with them. Is it because I just typed one t instead of 2?
*March 12, 2013*

**Phonemes**

I just wanted check my phonemes' division cow -c/ow (2 phonemes) tree- t/r/E (3) shopping - sh/o/p/i/ng (5) matter - m/a/t/e/r/ (5) gutters- g/u/t/e/r/s (6) horse h/o/r/se (4) car- c/a/r (3) chart /ch/a/r/t (4) see - s/e (2) saw- s/aw (2) sawing- s/aw/i/ng (4) savings- s/a...
*March 12, 2013*

**American History**

Thank you!!
*March 10, 2013*

**American History**

What was the political goal of the Soviet Union following the end of WWII?
*March 10, 2013*

**Spelling**

ok, thank you.
*March 3, 2013*

**Spelling**

Here are the words that I have to unscramble to form a sentence. It seems like it might be missing a word. disease contagious could not he doctor his conceal from... I can only come up with a sentence if I add an extra "his". The rules do not say to add an extra word...
*March 3, 2013*

**Math**

How much interest will I pay on a £115000 mortgage over 22 years at 4.83% Your kind cooperation would be much appreciated
*March 1, 2013*

**chemistry**

Just kidding. I'm stupid. I converted psi to mmHg and not atm to mmHg instead.
*February 20, 2013*

**chemistry**

questions**
*February 20, 2013*

**chemistry**

What is the pressure in millimeters of mercury of 0.0115mol of helium gas with a volume of 211ml at a temperature of 25 degrees celsius? Ok so I've come up with many different answers but none are right. You convert the mL to L and the temperature to Kelvin by adding 273 ...
*February 20, 2013*