Questions Asked on
August 2, 2012

math
How many arrangements can be made using 4 letters of the word HYPERBOLAS if no letter is to be used more than once?
asked by chacha 
chemistry
Find the number of disintegrations per minute emitted by 1.1 mol of 232Th in 1 min. The halflife of 232Th is 1.4 x 1010 year I was able to do this with the following technique: 1.1 x 6.022 x10^23 =6.62x10^23 1.4x10^10=7.358x10^15 minutes I think then it
asked by Nancy 
math
Luis and Berto sell TVs. Last month Berto sold 15 more TVs than Luis. Together they sold 163. How many TVs did Luis sell?
asked by haymee 
Physics
A series RCL circuit has a resonant frequency of 1500 Hz. When operating at a frequency other than 1500 Hz, the circuit has a capacitive reactance of 5.0 Ù and an inductive reactance of 30.0 Ù. What are the values of (a) L and (b) C? I know I should be
asked by Lauren 
Chem
What is the PH of 0.40 M Na2SO3? (K1 for H2SO3 = 1.5 * 10^2; K2 = 1.0 * 10^7
asked by XIA 
math
A certain store is selling an $80 radio $64. If a different radio had a list price of $200 and was discounted at 1.5 times the percent discount on the $80 model, what would its selling price be? a) $90 b) $105 c) $120 d) $140 e) $160
asked by Grace 
CHemistry For Dr.Bob
Hey Dr.Bob, I asked two days ago a question about a titration lab I had that you answered, but I still have one more question about that lab. Here's the lab summary: For my chemistry of solutions class, we had a titration lab where we titrated NaOH into an
asked by Robert 
chem
What is the entropy change to the surroundings when 1 mol of ice melts in someone’s hand if the hand temperature is 32°C? Assume a final temperature for the water of 0°C. The heat of fusion of ice is 6.01 kJ/mol. a. –188 J/K d. b. –22.0 J/K c.
asked by zak 
mathlaw of sins
solve the triangle: 1. A= 61 degrees a=8 b=21 2. A=136 degrees a=15 b=28 3. C=115 degrees b=12 c=7 For all of these problems I used law of sins and when I input it into my calculator I get domain error after doing sin inverse to get an angle degree. What
asked by skye 
physics
what net force is required to bring a 1500kg car to rest from a speed of 100kph within a distance of acceleration.
asked by zianna 
chemistry
why did the solution turn to pink at the end of the titration ?
asked by methove 
Chem II
Choose the aqueous solution below with the lowest freezing point. These are all solutions of nonvolitile solutes and you should assume ideal van't Hoff factors where applicable. a. 0.075 m NaI b. 0.075 m (NH4)3PO4 c. 0.075 m NaBrO4 d. 0.075 m LiCN e. 0.075
asked by jenni 
physics
what net force is required to bring a 1500kg car to rest from a speed of 100kph within a distance of acceleration.
asked by zianna 
medical billing and coding
what are the CPT and ICD9CM codes for following question? "this is a pleasant female who comes in with a soft tissue lesion in the left flank over what appeared to be a spigelian hernia site as well. However, it was not reducible and did not appear to be
asked by andrea 
algebra/logs
I don't understand this problem: (1/2)n = 0.015625 n log 0.5 = log 0.015625 n = log 0.5 / log 0.015625 n = 6 When I plug log .5 into the calculator it gives .3010 and when I plug .15625 to the calculator it is 1.806 and that would be .3010/1.806 =.1666.
asked by Nancy 
calculus max area
Maximize volume of a pyramid cut from peice of paper. (Problem) A pyramid consists of 4 isosceles triangles around a square base. If this is to be cut and folded out of a single square piece of paper, Maximize the volume. I am not sure where to begin here.
asked by Amy 
Literature
Great literature is educational because it A. allows you to simply observe and analyze. B. helps you draw on ideas you already have. C. won't challenge your beliefs. D. teaches rather than entertains. B?
asked by Abby 
physics
how long will it take for an apple falling from a 29.4m tall tree to hit the ground? how
asked by Anonymous 
Literature
In Act 5 of "The Tempest", why didn't Prospero tell Alonso about Antonio and Sebastian's plans to kill him? And because of his decision not to, what adjective would best describe Prospero?
asked by Barbie 
Math
What are the 3 solutions? I'm stuck! 6x=15(mod 21) a=6,m=21,b=15 d=gcd(6,21)=3 solns. 6x=15(mod 21) 2x=5(mod 7) 21=6(3)+3 6+3(2)+0 0=66 6(216(3))=3 621+18=3 6( )21()=3 (216(3))(15)6=3 ???????
asked by Shay 
Math
A delivery service charges a base price for an overnight delivery of a package plus an extra charge for each pound the package weighs. A customer is billed $22.85 for shipping a 3pound package and $40 for shipping a 10pound package. 1.) Write an equation
asked by Kiri 
Algebra
Can someone help me with this please. Andrew factored the expression 20x^312x^2+8x as 4x(5x^212x^2+8x) but when melissa applied the distributive law and multiplied out 4x(5x^212x^2+8x)she got 20x^348x^3+32x thus Andrews solution does not appear to
asked by Anonymous* 
math
A small group of employees in a company get viruses on their computers. Every hour, each computer infects one other computer. If it takes 8 hours for 100 computers to be infected, how long would it take for only 50 computers to be infected?
asked by Anonymous 
chemistry
determine the concentration of Fe2+ ion the prepared solution
asked by methove 
Math
Consider the congruence 6x=15(mod 21). How many solutions does the congruence have? What are all the solutions?
asked by Shay 
chemistry
calculate the percentage of FeSO4 in sample Y
asked by methove 
chemistry
Using the given data, and the table of Standard Reduction Potentials, find the standard reduction potential for this half reaction: 8H^+ + BaCrO4(s) + 3e > Ba^2+ + Cr^3+ + 4H2O(l) given: Ksp (BaCrO4)=2.1E10 DeltaGf* (kJ/mol): CrO4^2 (727.75), Cr2O7^2
asked by kellie 
AP WORLD HISTORY
WHAT WERE THE NEGATIVE EFFECTS/USES OF SPIRITS? (give several examples)
asked by Olivia 
Math
what does x reduce to???? 6x=15(mod 21) 2x=5(mod 7) x= ?(mod)7
asked by Shay 
Law/421
Sam is a high school math teacher. And, Becky is a student in his math class. During parentteacher conferences, "Teacher Sam" tries to intimidate Becky's parents by telling them: "I'll teach your daughter math during class if you give me $1000." Is this a
asked by anita 
math
Last month a store sold 4 times as many tapes as CDs. If the total quantity of these two items sold was 360, how many tapes did the store sell?
asked by amy 
Math
Your municipality withdraws 10,000 gallons per day from an aquifer that originally held 1,000,000 gallons. The recharge rate to the aquifer is 2,000 gallons per day. Determine how long it will take before the aquifer is depleted
asked by Nick 
apush leisler rebellion
James II became King of England in 1685 and New York became a royal colony. James II decreed the formation of the Dominion of New England in 1686 and added the colonies of New York and New Jersey in May 1688, designating New York City as the capital. In
asked by skye 
philosophy
what would an example of how C.Wright Mills ethical theory might work
asked by Anonymous 
Dynamics
A stone is thrown vertically upward from the top of a 30m high building with a velocity of 15m/s. Taking the acceleration of stone as 9.81 m/s2. And taking that as constant, determine a) the velocity v and elevations sy of stone above the ground at any
asked by Rajan 
World History
What empire did Europeans come to eye like greedy creditorys around a rich man's deathbed?
asked by Anonymous 
maths
the length of a rectangle is twice its width, the area is 72sq inches,find its dimensions(find length and width)
asked by 4611star 
math
the length of a rectangle is 2 inches less than 8 times the width. the perimeter is 194 inches..find dimensions
asked by Marcia 
Math
Prove that if gcd(m,n)=1 then m^phi(n)+n^phi(m)=congruent 1 (mod mn)
asked by Anonymous 
Geography
You are lying down on your bed in the dorm, which measures 3 feet by 6 feet. Calculate the pressure in psi (lbs / sq inch) your body exerts, spread out upon the total area bed. 1 foot = 12 inches.
asked by Jessica 
chemistry
determine the mass of FeSO4 in sample Y that you use
asked by methove 
AP World History
Why were spirits an important staple in Colonial America?
asked by Diana 
Statistics
Exponential distribution was used to model the lengths of CDROM drives in a two drive system. The two CDROM drives operate independently, and at least one drive must be operating for the sytem to eperate successfully. Both drives have a mean length of
asked by Danielle 
language
Even though, it is almost summer we still have overcast skies and light rain.
asked by tea 
math
In how many districts ways can the letters in ENGINEERING be arranged?
asked by chacha 
Statistics
A random sample of customer incomes yields a mean income of $35000 with a standard deviation of $4500. Assume that the distribution of the incomes in normal. What income range would include 90% of the most popular incomes?
asked by Danielle 
Math
Solve the Following quadratic equations by completing the square. 7x(squared)+4x13=8
asked by Emir 
math
a certain variety of strawberry plant sends out an average of 5 new runners per plant each year. If you planted 20 of these plants, how many strawberry plants would you have after 4 years?
asked by Gavin 
math
An elementary school has a large lunch room containing many tables. One day at lunch, the children at one table decide to see how long it will take to spread a rumor throughout the entire room. Each minute, the number of tables that know the rumor doubles
asked by Anonymous 
math
A woman goes to a store that sells used books and spends half of her money on books. Each day, she returns to the store and again spends half of her remaining money on books because she does not want to spend all of her money in one day. When she no longer
asked by Anonymous 
math
•Give two (2) reasons why Venn diagrams can be useful in explaining relationships
asked by LaCresha 
calculus
simplify 6x^42xy^4 divided by 2xy
asked by Shea 
math
whats it call, the total inches of height, length, all sides
asked by Anonymous 
Statistics
Can you show me how to figure out a sample size of N=60? What would the equation look like and how would I explain it to a class?
asked by Beconna 
math
how do you work out the problem 3/4ft.= how many inches.
asked by Anonymous 
math
Ms. Sue are you able to break 3/4ft.= how many inches for a 2nd. grader.
asked by Anonymous 
Math
Given (a+2,a2)= a for all integers a, (6,2)= a) 3 b) 4 c) 5 d) 6 e) 8 The cost of a drivein movie is $y per vehicle. A group of friends in a van shared the admission cost by paying $0.40 each.If 6 more friends had gone along,everyone would have paid only
asked by Grace 
Trigonometry
Simplify i^45. A. 1 B. i C. –1 D. –i
asked by Anonymous 
chemistry
determine the number of moles of FeSO4 in sample Y that you use
asked by methove 
math
#Algebra 2 Help Please?! If f = (1, 2), (2, 3), (3, 4), (4, 5), g = (1, 2), (3, 3), (5, 5), and h = (1, 0), (2, 1), (3, 2), find the following and state the domain: 2a.f+g 2b.fg 2c.f(times)g 2d.f/h 2e.g o f o h Let f(x)=x5 and g(x)=1/x . Write the
asked by Vicky 
math
what is the area of a regular hexagon inscribed in a circle with area of 9?
asked by Sara 
Mat0099
Solve using the addition principle. 5=x+4
asked by april 
Ms. Sue
Hi Ms Sue! I Jusk wanted to check if i was right. I have to write how the exterior of St. Sernin, differs or shares similar designs from the interior. I said that they both have round arches. Is that good ?
asked by Anonymous 
Computer Programing
Assignment 1: chocolate Delights candy company, part 1
asked by las veges 
AP World History
How did rum play a role in the American Revolution?
asked by Anne 
Informal Logic 103
Write two arguments in English, one in the form of modus ponens and one in the form of modus tollens. Then, write the arguments in symbols using sentence letters and truthfunctional connectives. (If your computer does not have all the symbols needed, use
asked by Anonymous 
essay
choose the most effective thesis from the following A i learned a valuable lesson B life is full of valuable lessons C the saying honesty is the best policy is a valuable life lesson D valuable lessons are inportant i life? i chose D
asked by jessica 
math
does it take more pressure to push water up a vertical pipe than the same pipe on a 45 degree incline
asked by mike 
chemistry
Calculate the following quantities. (See the periodic table.) (a) mass, in grams, of 2.54 102 mol of CdS g (b) number of moles of NH4Cl in 90.0 g of this substance mol (c) number of molecules in 5.081 102 mol C6H6 molecules (d) number of O atoms in 4.72
asked by Anonymous 
social studies
If a bow with a draw weight of 60 kilograms were to fire at someone 5 meters away but the user had to roll first before drawing back and firing two arrows. Would the target have enough time to dive for cover behind a rock?
asked by Jack 
Math
Noting that 666=2x3^2x37, find phi(666) using Euler Theorem.
asked by Jonathan 
Math
Find the units digit in 23^7777 by looking for mod 10.
asked by Shay 
Algebra 1B
Please help I am so confused... Question: supposed that y is directly proportional to x. a) use the given info to find constant of proportionally k. b) then use y=kx to find y for x=6 y= 62 when x=5 Please help.. thank you this is all I have so far. not
asked by Liz 
maths
find two even integers(numbers) so that the square of the smaller is 10 more than the larger one
asked by 4611star 
Algebra
Factor at the greatest common factor from the expression. Can someone please show me how to factor so I will know? Thank you! 18x^714x^2
asked by Anonymous* 
math
What is the difference in pressure needed to lift water 15ft in a three inch pipe on the vertical and the pressure needed to push water 15ft in a 3 inch pipe on a 45 degree incline?
asked by Mike Stone 
English
Help analyze this poem Amok He weaves his wife's limbs With those of her startled lover's. His sight grows dim as the flowered Sheets darken. His ears pound with heart's Hooves, the hoots and footstomping Of drinking mates who swear They would do the same
asked by Jojo 
algebra
The perimeter of a rectangle garden is 80m oits length is 4m more than 5 times its width, find the dimensions of the garden
asked by math 
math
Properties of quadrilaterals
asked by Hritik goyal 
Math
If point A is (3,2) and point B is (5,5) then what is the length of segment AB to the nearest tenth?
asked by Grace 
math
0.000006 show division
asked by dajour 
math
the sum of two numbners is 143. on of the numbers is 3 more than six times the other number..find the two number and show work
asked by Marcia 
law/421
whether the First Amendment to the U.S. Constitution protects defamation. the relationship between the First Amendment of the U.S. Constitution and censorship when doing business?
asked by a 
law/421
How does the strict liability doctrine apply to business corporations? Provide examples and explain how your example demonstrates the strict liability doctrine that applies to business corporations.
asked by a 
Math
The percent decrease from 5 to 4 is how much less than the percent increase from 4 to 5? A. 0% B. 5% C. 15% D. 20% E. 25%
asked by Peter 
algebra
find a if the line through (9,6a)and (15,a) has the slope 5/3..show work
asked by Marcia 
math
A man has $32 and decides to plant a garden. He cannot stand the thought of spending all of his money on any single day, so each day he goes to the store and spends half of his money on tomato plants. When he no longer has enough money to buy additional
asked by Anonymous 
math
A bag contains five purple ("P") blocks and one yellow ("Y") blocks. Without looking into the bag you reach in, take out a block, return the block to the bag, and then repeat the same process a number of times. Which of the following sequences of selected
asked by Anonymous 
Calculus Max Profit
To make pom poms in our school colors, we will have expenses of $100 to rent the Acme PomPom Plant, and then $0.25 per pom pom in materials. We believe that we can sell 500 pom poms if we charge $1.50. Assume the number sold is a linear function of the
asked by Ronny 
Human Services
I am doing an assignment on program planning and evaluation. In the last section of the essay I am supposed to identify the technical aspects that my fictional domestic abuse recovery organization may run into. I do not understand what a technical aspect
asked by Jena 
PSY
On p. 84 of the text, in the Thinking Clearly section, the conduction action potentials and activation of neurotransmitters is related to a row of mousetraps on a wobbly shelf. Think of your own original analogy you can use to describe the conduction of
asked by Rebecca 
statistics
A bag contains five purple ("P") blocks and one yellow ("Y") blocks. Without looking into the bag you reach in, take out a block, return the block to the bag, and then repeat the same process a number of times. Which of the following sequences of selected
asked by Anonymous 
french
Is the Plusqueparfait tense the same as perfect tense in English?
asked by Barbie 
math
A can of paint and a paint brush cost a total of $35. If the can of paint costs $30 more than the paint brush, how much does the paint brush cost?
asked by Anonymous 
math
A certain printer can print at the rate of 80 characters per sound, and there is an average of 2,400 characters per page.If the printer continued to print at this rate, how many minutes would it take to print an Mpage report? a) m/30 b) m/60 c) m/2 d) 2/m
asked by Grace 
Math
Compute 2^1000(mod 121) using Euler.
asked by Jonathan 
Math
A farmer wants to fence in part of her land so that her chickens will have their own little area. If she only has 28 feet of fence, what is the area of the largest pen that she can build in square feet?
asked by Abiagil 
Math
Find the remainder when 13^18 + 19^12 is divided by 247.
asked by Shay 
Math
A rectangular sandbox has a length of 60 inches, a width of 40 inches, and a depth of 6 inches. What is the volume in cubic inches?
asked by Anne 
math
Solve n + 1 = 4
asked by Cal 
Calculus AP
hi again im really need help TextBook: James Stewart:Essential Calculus, page 311. Here the problem #27: First make a substitution and then use integration by parts to evaluate the integral. Integral from sqrt(pi/2) TO sqrt(pi)of θ^3 cos(θ^2)dθ. i did
asked by Vicky 
marketing
Suppose that you've been hired by a local independent bookstore to help its owner win back customers lost to a large bookstore chain. Design and outline a plan to win back the store's lost customers and rebuild those relationships.
asked by tyrone 
calculua
describe the system. x+4y=1 and 3x+8y=2
asked by Shea 
Algebra
An account with $300 in it has been earning 3% annual interest compounded continuously for 10 years with no deposits or withdrawals in that time. How much was in the account 4 years ago.
asked by Heather