Thursday

August 28, 2014

August 28, 2014

Total # Posts: 2,048

**AP Physics**

By Snell's law, n(incident)sin(theta(incident)) = n(refracted)sin(theta(refracted)) or n(1)sin(theta(1)) = n(2)sin(theta(2)) Solving for theta(2) sin(theta(2)) = [n(1)sin(theta(1))]/n(2) Theta(2) = arcsin [n(1)sin(theta(1))]/n(2) Theta(2) = arcsin ((1)(sin(33.5))/1.33 or ...
*September 25, 2011*

**physics**

some massive butt mud
*September 21, 2011*

**math**

john's high score on the asteroid game was 326,700. mike's high score was 418,200. rebecca just plated the game and her high score was halfway between john's and mike's. what was rebecca's score?
*September 20, 2011*

**Spanish-another question please**

Thank you for all your help
*September 20, 2011*

**Spanish-another question please**

1.If I had a picture of a family having fun in the snow-I'm not sure how to say that-- a.La familia divertirse en la nieve b.La familia se divertir en la nieve c.La familia diviertese en la nieve d.La familia se divierte en la nieve I think it is (a) 2. If a muchacho is ...
*September 20, 2011*

**Spanish**

Could you please check these -thank you 1.How do you say I am going to wake up early I think it is "Yo me voy a despertar temprano" 2. What is another way of saying "Voy a secarme el pelo. Is it "Me voy a secar el pello.
*September 20, 2011*

**Physics**

The acceleration due to gravity on the moon is about one sixth its value on earth. If a baseball reaches a height of 62 m when thrown upward by someone on the earth, what height would it reach when thrown in the same way on the surface of the moon? Answer in units of m
*September 17, 2011*

**algebra**

you rent a car for $55.00 a day. .20 cents a mile , and you pay $80.00 at the end of the day. how many miles did you drive
*September 15, 2011*

**statistics**

You ask a neighbor to water a sickly plant while you are on vacation. Without water the plant will die with probability 0.8. With water it will die with probability 0.4. You are 87 % certain the neighbor will remember to water the plant. You come back from the vacation and the...
*September 14, 2011*

**Physics**

A ball is thrown straight up and rises to a maximum height of 24 m above the ground. At what height is the speed of the ball equal to half of its initial value? Assume that the ball starts at a height of 1.9 m above the ground.
*September 13, 2011*

**math riddles for 7th grade**

turdy truck
*September 13, 2011*

**Chem 151**

23, 54
*September 13, 2011*

**Chem**

A mass spectrum of phosporus atoms shows only a single peak at a mass of 31 what can you conclude from this observation?
*September 10, 2011*

**psycology**

nisa has grown up in a small villegein the foothills. There was no electricity and water had to be hand pumped.they seldom saw people from the outside.when she entered school the bus had to pick her up
*September 10, 2011*

**Chemistry**

Beryllium Chromate Pentahydrate
*September 7, 2011*

**Chemistry**

Use Boyles law P1V1 = P2V2 Answer 112 kPa (850)(x)=(1700)(56) <--- Equation
*September 6, 2011*

**chemistry (please help)**

Use density to find the mass Density * Volume = Mass of Coolant Make sure to convert 26.5 to ml or take 1.11 g/ml to 1.11 g/L.
*September 6, 2011*

**algebra 1**

Not DISTRIBUTE BUT ADD
*September 6, 2011*

**algebra 1**

Distribute the 5 9+105x
*September 6, 2011*

**Math**

Fair Coins*
*September 6, 2011*

**Math**

1. When four fan coins are flipped what is the probability of getting either exactly two heads of exactly two tails? 2. Solve for x 3x-x√3=-6 3. In the figure below ABCD is a rectangle and DE=DC. Given Ad= 5 and BE=3 find DE Thanks!
*September 6, 2011*

**Bio**

How much NaC3H5O3 (in grams) is needed to create a 1000 ml volume of Ringer’s lactate solution?
*September 6, 2011*

**arithmetic**

What is the sum of the arithmetic sequence 22, 13, 4 … if there are 28 terms?
*September 4, 2011*

**algebra**

select T.branch_name from branch T, branch S where T.assets > S.assets and S.branch_city = "Brooklyn" Write an efficient relational algebra expression that is equivalent to this above query. Here is my answer: á T.branch_name (T.assets > S.assets v S....
*August 30, 2011*

**math**

select T.branch_name from branch T, branch S where T.assets > S.assets and S.branch_city = "Brooklyn" Write an efficient relational algebra expression that is equivalent to this query. Here is my answer: á T.branch_name (T.assets > S.assets v S....
*August 29, 2011*

**Physics**

A dog runs 50 m 30¢ª south of east and then turns and runs 75 m 45¢ª north of east. Determine the dog's resultant displacement
*August 28, 2011*

**English **

What is the meaning of validity, truth, and soundness as they relate to logical syllogisms
*August 28, 2011*

**Math**

An angle θ, in standard position, has its terminal side in Quadrant IV on the line 12x + 5y = 0. Find the exact values of sin θ and cos θ.
*August 16, 2011*

**math**

write an inequality for the p (in dollars)described. Price start at $12.99
*August 11, 2011*

**math**

Suppose you have a 64 gigabyte flash storage system, with a 4096 byte page size. How big would the flash translation table be, assuming each page has a 32 bit address, and the table is stored as an array. I think the answer is 20 pages, does that sound about right?
*August 5, 2011*

**Math **

Can you get an answer?
*August 5, 2011*

**Math **

Find the quotient a^2x^3 + (5a^2b+ab)x^2 + (ab^3+5ab^2)x + b^4 divided by ax + b ^ symbolize power so a^2x^3 means a squared times x cubed.
*August 5, 2011*

**math**

I know its hard to see, but the triangle looks like this /_| with the legs on the right and bottom with the hypotenuse on the left. They give you y for the right leg and x for the bottom leg, no hypotneuse. o is the bottom right angle and a is the top right angle. So I dont ...
*August 5, 2011*

**math**

Given the triangle shown, describe the function values in term of hte triangle's two legs /| /a| y / | /o__| x Find: sec a Find: csc o
*August 5, 2011*

**statistics**

In a preliminary study, the sample standard deviation for the duration of a particular back pain suffered by patients was 18.0 months. How large a random sample is needed to construct a 90% confidence interval so that an estimate can be made within 2 months of the actual duratio
*August 2, 2011*

**PreCalc - Sequence**

A ball is dropped from a height of 20 ft and always rebounds 1/4 of the distance fallen. A. write a sequence for the first 3 rebound heights B. How high is the 6th rebound? C. Find the sum of all possible rebounds. I keep getting numbers that are too high. I don't think I ...
*July 27, 2011*

**math**

X+(1/6)=(1/3) get X by itself by subtracting 1/6th from both sides. x(+1/6)-(1/6)=(1/3)-(1/6) x=(1/3)-(1/6) x=(1/6) These operations of getting the variable(s) on one side will be the basis of many of your future calculations as you progress through mathematics.
*July 27, 2011*

**math**

help solve x + 1/6= 1/3 thanks
*July 27, 2011*

**math**

solve by substitution method. 5m+n=36 m-5n=54 the everton college store paid 1,859.00 for an order of 49 caculators the store paid 11.00 for each scientific calculator. the others ,all graphing caculators, cost the store 55.00 each. how many of each type of caculators was ...
*July 24, 2011*

**Pre Cal/Vectors**

Can someone show the steps involved in figuring out this type of problem? Given the magnitudes of vectors u and v and the angle Ό between them, find the magnitude of the sum u + v to the nearest tenth and the angle that the sum vector makes with u to the nearest degree. /...
*July 24, 2011*

**Vectors**

If /U/=9, /V/=11, and theta = 43 deg (angle between), find the magnitude of U+V and give the direction that the that the resultant makes with U.
*July 24, 2011*

**structured query language math**

Display a list of all instructors, showing their ID, name, and the number of sections that they have taught. Make sure to show the number of sections as 0 for instructors who have not taught any section. Your query should use an outerjoin, and should not use scalar subqueries...
*July 23, 2011*

**math write in sql**

Display the list of all departments, with the total number of instructors in each department, without using scalar subqueries. make sure to correctly handle departments with no instructors. Is this the right answer: select department.dept_name from department natural left ...
*July 23, 2011*

**math write in sql**

I have this question i need to know how to do for a test coming up this week. a)Display the list of all course sections offered in Spring 2010, along with the names of the instructors teaching the section. If a section has more than one instructor, it should appear as many ...
*July 23, 2011*

**SQL**

Im am running oracle. Here is what i have for the first query:select ID, name, from instructor natural left outer join section where sec_id >= 0.
*July 22, 2011*

**SQL**

This is a practice problem that the book has no answer for and needed to see how these two problems are done so i can be prepared for a test next week. The both need to be written in structured query langauge.
*July 22, 2011*

**SQL**

Display a list of all instructors, showing their ID, name, and the number of sections that they have taught. Make sure to show the number of sections as 0 for instructors who have not taught any section. Your query should use an outerjoin, and should not use scalar subqueries...
*July 22, 2011*

**trig**

Given that SIN Theta = -1/sqrt(10) and theta is in quadrant 4, find sin2theta and cos2theta. I'm not sure how to properly square the -1/sqrt10 and keep an exact answer other than decimal. Otherwise, my final answer is Sin2Theta = -.7255970691 and cos2theta = 1.632455533
*July 13, 2011*

**Pre-Calculus**

Given that SIN Theta = -1/sqrt(10) and theta is in quadrant 4, find sin2theta and cos2theta. I'm not sure how to properly square the -1/sqrt10 and keep an exact answer other than decimal. Otherwise, my final answer is 1.632455533
*July 13, 2011*

**Calculus**

positive 5.47
*July 12, 2011*

**Calculus**

-13.67?? ...
*July 12, 2011*

**Calculus**

The altitude of a triangle is increasing at a rate of 3000 centimeters/minute while the area of the triangle is increasing at a rate of 1500 square centimeters/minute. At what rate is the base of the triangle changing when the altitude is 9500 centimeters and the area is 87000...
*July 12, 2011*

**algebra**

simplify by removing the factors of 1 p^2-4/(p+2)^2
*July 10, 2011*

**algebra**

simplify by removing the factors of 1 p^2-4/(p+2)^2
*July 10, 2011*

**English**

Lying in a Hammock at William Duffy's Farm in Pine Island, Minnesota? What is the significance of this poem? What does the author mean by the last line? I don't understand what this poem is about and any help would be greatly appreciated! Over my head, I see the bronze...
*July 10, 2011*

**chemistry**

If 10 calories of heat are added to two grams of liquid water what is the temperature of the water
*June 26, 2011*

**COLLEGE ALEGBRA**

Sue, a recent retiree, requires $6,000 per year in extra income. She has $50,000 to invest and can invest in B-rated bonds paying 15% per year or in a certificate of deposit (CD) paying 7% per year. How much money should be invested in each to realize exactly $6,000 in ...
*June 20, 2011*

**math**

What formula would you use to figure out this word problem? A rectangular pen for a pet is 8 feet longer than it is wide. Give possible values for the width W of the pen if its area must be between 180 and 825 square feet, inclusively.
*June 18, 2011*

**Algebra**

James has saved $50. He wants to buy a DVD player for $149 in about 5 months. To find out how much he should save each week he wrote 50+20x=149. Explain his equation.
*June 16, 2011*

**math**

if i made $65,000 a year and got a $3000 raise. what would be the precent increase rounded to the nearest tenth
*June 13, 2011*

**COLLEGE ALGEBRA**

.7638
*June 12, 2011*

**physics**

ya get it 69
*June 9, 2011*

**physics**

...
*June 9, 2011*

**physics**

...
*June 9, 2011*

**physics**

fist you take 100 and then *2 to get 200 then do3.275 * 40 and get 131 then all you need to do is 200-131... and get______________________________________________
*June 9, 2011*

**Math - Possible or Potential rational zeros**

idk
*June 1, 2011*

**Math**

7yd 2ft 3in - 2yd 2ft 9 in
*June 1, 2011*

**Math**

A pyramid is inscribed in a cube whose volume is 52(pi) cm^3. The volume of a sphere is equal to the volume of this pyramid. Find the volume of a second cube whose edge is equal to the radius of the sphere.
*May 31, 2011*

**math**

sorry i dont understand the question
*May 31, 2011*

**Math**

Compute the number of eleven-digit integers that can be formed using all of seven 1s and four 0s if you never start of end with a 0 and no 0s are ever next to each other.
*May 31, 2011*

**math**

ok to find a diagonal you use the Pythagorean theorem which is a^2 + b^2 = c^2 ok? c^2 is the diagnol. So basically a^2 + b^2 = 100 ok? so what two squares equal 100. well 64+36=100 take the square root of those two which is 8 and 6. so the perimeter is 28 cm long
*May 31, 2011*

**math**

if you retyped the question so that it is legible i may be able to help you, otherwise i won't.
*May 31, 2011*

**Math**

alright thankyou.
*May 31, 2011*

**Math**

uh oh my mistake. I missed a key part of the question. the question is..... How many terminal zeros are at the end of (20!)^2?
*May 31, 2011*

**Math**

20,15,10, and 5 are all divisible by 5. so 4. Is that how you solve for the amount of terminal zero's?
*May 31, 2011*

**Math**

How many terminal zeros are at the end of (20!)?
*May 31, 2011*

**math**

what kind of name is aniket? ok back to the question, i'm not sure how to explain to you how i solved this one but i did find the answer. I just made one of his subjects marks 60 then i subtracted 20 from 60 and added 20 from 60 so the three mark amounts are 40,60,80. So ...
*May 31, 2011*

**statistics**

10.15 A psychologist theorized that people can hear better when the have just eaten a large meal. Six individuals were randomly assigned to eat either a large meal or a small meal. After eating the meal, their hearing was tested. The hearing ability scores (high numbers ...
*May 30, 2011*

**Chemistry**

How many mL of 0.024M KMn04 (Potassium Permanganate) is required to react with 20mL of 0.112M Fe2+?
*May 29, 2011*

**Math**

1 1/3 - 1 3/4
*May 26, 2011*

**Math**

what do you notice about each ratio? 2/1 and 4/3
*May 26, 2011*

**World History**

What was the most important factor in the British conquest of India during the eighteenth century? A. willingness of the British government to pay for an invasion. B. political disunity in India. C. superiority of British arms. D. addiction of millions of Indians to opium. I ...
*May 25, 2011*

**math**

Compute the number of eleven-digit integers that can be formed using all of seven 1s and four 0s if you never start or end with a 0 and no 0s are ever next to each other.
*May 23, 2011*

**Algebra**

well for 1 day you have 21 dollars to spend on mileage. $21.00/$0.21 which is 100 miles
*May 23, 2011*

**Algebra I**

this is funny i came here to ask question but yet i'm answering them. the formula for this is S=D/T or Speed = Distance divided by time, but since you are looking for the time you need to get T by itself. To do so you have to multiply both sides by T then divide S from ...
*May 23, 2011*

**math**

Compute the number of eleven-digit integers that can be formed using all of seven 1s and four 0s if you never start or end with a 0 and no 0s are ever next to each other.
*May 23, 2011*

**math**

im sorry i looked back at what i tried to write out and it turned out wrong, the two 2's are meant to be right after the g's in both the logs and as a subscript because it is log base 2.
*May 23, 2011*

**math**

unsure how to explain how to solve it but i calculated it in my ti-84+ calculator with an equation solver that i downloaded. 4^log [2log (5)] = 21.56540031 2 2
*May 23, 2011*

**math**

A box containing Munchkins contains chocolate and glazed donut holes. If Gloria ate 2 chocolate Munchkins, then 1/11 of the remaining Munchkins would be chocolate. If Gloria added 4 glazed Munchkins to the box, 1/7 of the Munchkins would be chocolate. How many Munchkins are in...
*May 23, 2011*

**math**

A large rectangle is divided into 4 non-overlapping smaller rectangles by two lines. One line is parallel to the base, and the other line is parallel to the height. If the areas of three of the small rectangles are 18,24, and 40, compute the only possible integer solution for ...
*May 23, 2011*

**math**

the sign of the sum would be negative, for example: -14+7=-7 because the negative integer has a greater magnatude, then the sign will remain to be negative.
*May 23, 2011*

**Math**

unsure what you are asking. Is there a slope given?
*May 23, 2011*

**math**

the sign of the sum would be negative, for example: -14+7=-7 because the negative integer has a greater magnatude, then the sign will remain to be negative.
*May 23, 2011*

**Urgent Math**

A large rectangle is divided into 4 non-overlapping smaller rectangles by two lines. One line is parallel to the base, and the other line is parallel to the height. If the areas of three of the small rectangles are 18,24, and 40, compute the only possible integer solution for ...
*May 23, 2011*

**Math**

18=(2*3)*(3*3)??? This doesn't work
*May 23, 2011*

**Math**

A large rectangle is divided into 4 non-overlapping smaller rectangles by two lines. One line is parallel to the base, and the other line is parallel to the height. If the areas of three of the small rectangles are 18,24, and 40, compute the only possible integer solution for ...
*May 23, 2011*

**Math**

I am pretty much clueless with this but would like some help the question i have been given is........How many terms are in the expansion of (a+b+c)^5 after like terms have been combined? Please help me all the way through it if you can. Thankyou
*May 23, 2011*

**Math**

A box containing Munchkins contains chocolate and glazed donut holes. If Gloria ate 2 chocolate Munchkins, then 1/11 of the remaining Munchkins would be chocolate. If Gloria added 4 glazed Munchkins to the box, 1/7 of the Munchkins would be chocolate. How many Munchkins are in...
*May 23, 2011*

**precal**

find the quotient z/w z=8(cospi/3+isinpi/3) w=4(cospi/18+isinpi/18)
*May 20, 2011*

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