Questions Asked on
April 23, 2017

physical chemistry
Estimate the boiling point of 250 cm3 of water to which 12.6 g of phenol(C6H5OH) has been added. Treat the solution as ideal.( water of boiling point elevation is 0.51K/mol)
asked by Byeong Ju 
math
A 0.500 kg wheel that has a moment of inertia of 0.015 kg m^2 is initially turning at 30 rev/s. it starts to rest after 163 revolution. how large is the torque that slowed it?
asked by krisna 
PHYSICS
A 0.500 kg wheel that has a moment of inertia of 0.015 kg m^2 is initially turning at 30 rev/s. it starts to rest after 163 revolution. how large is the torque that slowed it?
asked by krisna 
Math
2arcsin(x/underroot6)+arcsin(4x)=180/2
asked by Anonymous 
Math
Prove that (4tanx(1tanx)square)/((1+tanx)square)square=sin4x
asked by Ivan h 
history
why did the french revolution take place in 1789 and not before that date
asked by adiona 
Algebra
What are the next three terms in the sequence? 1, 9, 19, 29, ... A. 38, 37, 32 B. 40, 51, 62 C. 39, 49, 59** D. 38, 47, 56
asked by Math Help 
Pls help urgent math
2/7 part of a cable was laid on the first day, 1/5 part on the second day and 1/3 part was laid on the third day. If 443 1/3m was laid on the fourth day to complete the work, what is the total length of the cable laid?
asked by Iron Sparrow 
maths
Let A1 = { 1 , 2 , 3 , 4 , 5 , 6 }, A2 = { 7 , 8 , 9 , 10 , 11 , 12 , 13 } and A3 = { 14 , 15 , 16 , 17 , 18 , 19 }. How many nonempty sets are there which are a subset of A1 OR a subset of A2 Or a subset of A3?
asked by s17 
Maths
How many positive integers less than 1000 are there which contain at least one 4 or at least one 9 (or both)?
asked by s17 
maths
In the local boating pond there are 11 plain wooden boats, each with a different number. The owner decides that some of these boats will be painted: one in blue, one in green, one in red, and one in orange and the remaining are left unpainted. How many
asked by s17 
accounting
ABC Corp Ltd has 10 million shares and $600,000 of debt (issues bonds @ 7% p.a.). EBIT is projected to be $3 million. The company tax rate is 20%.Preference shares pay an annual dividend of $100,000. Management is considering two options for capital
asked by Reshmi 
algebra
The length of a rectangle is twice the width. If the length is increased by 4 inches and the width is diminished by 1 inch, a new rectangle is formed whose perimeter is 198 inches. Fine the dimensions of the original rectangle.
asked by nisha 
Math
Solve 24,000X0.04X30years=
asked by Judy 
geomeotry PLEASEE HELPPPPPPp!
The perimeter of the base of the regular quadrilateral pyramid is P = 30 cm. Find the sum of all edges of this pyramid, if the perimeter of a lateral face is 27.5 cm
asked by Katniss Everdeen 
literature
How is the concept of cultural encounter treated in the short story “One out of Many”?
asked by dana 
Chemistry
Why is the selenate ion, SeO42−, is more stable in aqueous solution than is the tellurate ion, TeO42?
asked by Mr. Swagigga 
trig
Find all solutions in the interval [0, 360) 8cos^2x+6cosx+1=0
asked by Ellie 
English
Compare Lines 58687 with those spoken by Satan in Book I: "The mind is its own place, and in itself Can make a Heav'n of Hell, a Hell of Heav'n."
asked by Emily 
algebra HELP PLEEEEASE
Solve the following system using elimination or substitution. show your work. y = x^2  2x  6 y = 4x + 10 Please explain how to do this and the answer! THANKS!
asked by help plesze 
maths
A teacher driving his vehicle at 24 kmph reaches her school 5 minutes late.If She had driven the vehicle 25% faster on an average she would have reached 4 minutes earlier than the scheduled time. How far is her school ?
asked by kumar 
programming
Write the pseudocode for an application that accepts enter eight friends’ first names and displays them in alphabetical order
asked by alex 
@ Online Students
A student recently posted this. Please think about it. "quick backstory; i've been cheating on all of my work except portfolios this whole year cause i'm in online school. but i'm wanting to learn since there's gonna be ACT test in REAL so... please help
asked by Ms. Sue 
ALG II COT
Have a tommorrow and want to make sure I understand the COT (cotangent) formula could someone give me a problem to do and check it. Thanks Sam
asked by Sam 
2 math questions, urgent plz help!!
The line with equation a + 2b = 0 coincides with the terminal side of an angle θ in standard position and cos θ
asked by Jenn 
chemistry
Calculate the molar solubility of BaSO4 in a solution in which [H3O+] is 0.50 M. Ksp(BaSO4) = 1.1×1010, Ka(HSO4)=1.02×102
asked by anna 
math
You place a bet on the number 21 in roulette. The probability of winning is 1 38 , and the company hosting the casino night for a city fundraiser gives the payoff odds as 35:1. What are the odds that the ball will land on the number 21? 1:37 1:38 1:35 1:21
asked by Arianne 
Math
If
asked by Sara 
Algebra
Bob is going from his house to his uncle Sam's house in another state. He started running. After a while he switches to a bicycle. After a while he switches to a truck. After a while he switches to a sports car. After a while he switches to a helicopter.
asked by Juliana 
Alg II COT
Hi  any problem you can give me to make sure I understand ex: square root 3, 1, square root 3 (over) 3, 0
asked by Sam (bob pursley) 
Scientific Method
Joe Student rolled a toy car down a ramp and measured how far it traveled along the floor. He recorded the distance along with the original mass of the toy car. Then, he taped a penny to the roof of the same toy car, measured its new mass, and rolled it
asked by Davvy 
math help please check my answer
A roofer is standing on the roof of a house 60 ft above the ground. His truck is parked 25 ft from the house. What is the angle of depression from the roofer to his truck? Round to the nearest whole degree. 22° 23° 67° 68°
asked by mack 
math
1A matching card game contains 48 cards. Each card shows a piece of fruit, and there are 8 cards of each fruit in the deck. What is the probability of randomly selecting a picture of a banana? 6 1 1 8 5 6 1 6 2.A standard deck of 52 cards contains 4 aces.
asked by Arianne 
check my answers? language arts
1. The fire's angder could no be contained. A). personification *** B.) simile C.) metaphor 2. The flames ran along the deliberate rows of vines, like long curved fingers reaching for the horizon, lighting the night sky. A). personification B). simile C).
asked by Sofet 
Math
If
asked by Sara 
algebra
What is the domain for f(x)=8(2)^x
asked by Jay 
Math geometry
The surface area of a cube is 96in2.what is the volume of the cube?
asked by Steven 
Political Science
In the Unit 4 lecture on elections, you learned about the median voter theorem. Describe the median voter theorem as it was explained in the lecture. Now, think about the political parties and leadership roles you learned about in Unit 5. How do political
asked by Ethan 
Chemistry
In a given experiment 36.44 mL of NaOH were required for neutralize a solution of HCl 0.35 M. Calculate the moles of NaOH present to neutralize the HCl in the titration.
asked by Anon 
Algebra Please Help Urgent
Bob is going from his house to his uncle Sam's house in another state. He started running. After a while he switches to a bicycle. After a while he switches to a truck. After a while he switches to a sports car. After a while he switches to a helicopter.
asked by Anonymous 
alg 2 cotangent
Hi  any problem you can give me to make sure I understand ex: square root 3, 1, square root 3 (over) 3, 0
asked by sam 
Algebra PLEASE HELPPP ASAP NEED HELP!!!
In a twodigit number the units’ digit is 7 more than the tens’ digit. The number with digits reversed is three times as large as the sum of the original number and the two digits. Find the number.
asked by Katniss Everdeen 
geometry please help!!!!
The base of a right prism is isosceles trapezoid with legs c=d = 5 cm, bases a=8 cm and b=14 cm, and altitude of the trapezoid k=4 cm. The height of the prism h=10 cm. Find: Lateral area
asked by Katniss Everdeen 
Chemistry
Choose the most polar bond from the options given below. a) BO b) BS c) CN d) CO
asked by Anon 
English
For the following sentences, insert commas, quotation marks, and capital letters where they are needed. Write "C" if the sentence is correct. 1) When I shrieked in fear,the usher warned me to be quiet.
asked by Hayden 
English
Use capital letters, quotation marks, and other punctuation marks where they are needed in each of the following sentences. 1. I've read, Janell quickly replied, the one titled, Beat the StoryDrum, PumPum. 2. Isn't that Elton asked about African American
asked by Hayden 
Calculus
If y = 18  3x, what is the maximum value of the product 2xy? A. 3 B. 0 C. 3 D. 6 E. 54 I found that the value of the maximum occurs at x = 3, but that the value itself is 54. Is E the answer?
asked by Anonymous 
alg II
what is the angle whose cotan is 1? what is the angle whose cot is sqrt 3? 45 degree 30 degree are these correct
asked by sam 
Math Please help
Al and Bill live at opposite ends of the same street. Al had to deliver a parcel to Bill’s home, Bill one at Al’s home. They started at the same moment, each walked at constant speed and returned home immediately after leaving the parcel at its
asked by Sara V. 
English  check
New Mexico now claims to have 72 percent of the country's uranium reserves. Just checking in advance but would the function of this infinitive phrase be direct object since it's receiving action from the verb?
asked by Katarina 
Calculus
If g(x) = integral from 0 to x^2 of √(t^3+2) then g'(2) = ?
asked by Anonymous 
English  check
This rock turned out to be high grade uranium ore. Function is adjective Uranium is a radioactive element that is used to create nuclear energy. Function is Adjective During the spring of 1950, a man bent down to pick up a yellow rock. Function is Direct
asked by Katarina 
education
I need help finding a local public policy web site and federal public policy website on foster care.
asked by sandy 
Technology and Society
A Web site that has a posted privacy policy protects users from A. use of information for marketing. B. release of personal identification. C. release of information on browsing history. D. downloading of computer viruses.
asked by Kovia 
Chemistry
Calculate the cell potential for the following reaction as written at 25.00 °C, given that [Cr2 ] = 0.875 M and [Ni2 ] = 0.0100 M. I keep on getting the answer .42 which is incorrect. Thank you so much in advance!
asked by Julia 
Math
Suppose that an animal's circadian rhythms tell it to eat a meal every 4h. How meals will the animal eat each day.
asked by Linda 
grammar check
Uranium is a radioactive element that is used to create nuclear energy. Predicate Noun
asked by Anonymous 
infinitive
New Mexico has petroleum, potash, copper, and natural gasto name a few. Function adjective
asked by check grammar 
statistics
The distance travelled in a week by sales staff employed by a nationwide security firm is approximately normally distributed with a mean of 200 miles and standard deviation of 48 miles. a) less than 80 miles, b) more than 250 miles, c) between 100 and 300
asked by Joshua 
Social Studies
1.What was North Korea’s response to President George W. Bush’s 2001 threat to stop negotiations? A. North Korea immediately gave in to his list of conditions. B. North Korea resumed its nuclear program. C. North Korea sought the help of the United
asked by YunoGasai 
History URGENT!
Young civil rights activists attempted to desegregate Southern restaurants by holding A) Protest B) Sitins C) Boycotts
asked by cody 
Statistics
In 2015, the average price of new homes in a certain suburb was $145,000. Assume that this mean is based on a random sample of 1000 new home sales and that the sample standard deviation is $24,000. Construct a 99% confidence interval for the 2002 mean
asked by Jerold 
Chemistry
The quantity of antimony in a sample can be determined by an oxidationreduction titration with an oxidizing agent. A 7.79g sample of stibnite, an ore of antimony, is dissolved in hot, concentrated HCl(aq) and passed over a reducing agent so that all the
asked by Jackie 
Math
The bottom of a picture five feet tall is four feet above the level of an observer's eyes. How far from the wall on which the picture hangs should the observer stand in order that the picture subtends the greatest possible angle at the observer's eyes?
asked by Parker 
Statistics
The correlation coefficient between X and Y is the same as the correlation coefficient between Y and X. True  If you were to find the correlation coefficient with a given data set for x and y, it would have the same correlation coefficient value as y and
asked by Nick 
Chemistry
How would I balance the following redox equation? I know the Charge on the Br is 5, but i am comfused on where to go from there. H20 + Br^ + Al^3+ > Al + BrO3^ + H^+ Thank you so much in advance
asked by Hannah 
math
A regular hexagonal pyramid has a perpendicular height of 42.0mm.If the distance across the flats of the hexagonal base is 18m find the volume and the lateral surface area of the pyramid.
asked by Kepas 
Statistics
If the slope of the regression line is negative and the correlation coefficient is .5, coefficient of determination is:  It would be 0.25. Correlation coefficient = r and coefficient of determination = r^2. Then, coefficient of determination would be
asked by Jared 
HISTORY HELPPPP
In 1965, President Johnson significantly increased the number of U.S. troops in Vietnam because A)air strikes had made it safe for ground forces to enter the war. B) communist forces continued to fight despite intense U.S. bombing. C)South Vietnamese
asked by Jessica 
Math PLEASE HELP. I DONT UNDERSTAND THIS QUESTION
What is the formula for base, b, of a triangle if the area is A and the height is h?
asked by Crystal 
Math
$24,000X0.04X30years (deposit of $24,000 and compound interest monthly of 4% for 30 years ?
asked by Judy 
Mathematics
You live 2 3/4 miles from school. In the morning, you walk 1/3 mile directly toward school to take the bus. After school, you walk home the same distance when the bus drops you off. How many miles do you ride the bus to and from school each day?I dunno
asked by Unknown 
physics
A mass on a spring A oscillates at twice the frequency of the same mass on spring B. Which statement is correct? A. The spring constant for B is one quarter of the spring constant for A. B. The spring constant for B is 4 times the spring constant for A. C.
asked by Idali 
physics
When an object is moving in a simple harmonic motion, which of the following is at a minimum when the displacement from equilibrium is zero? A. the magnitude of the velocity B. the magnitude of the acceleration C. the kinetic energy D. the total mechanical
asked by Idali 
MATHS
IN RECTANGLEABCD, AB=25CM ,BC=15CM.IN WHAT RATIO DOES BISECTOR OF ANGLE CDIVIDES AB?
asked by deevi 
physics
A crest on a transverse wave is to a compression in a longitudinal wave as a trough is to: A. a resonance B. a beat C. interference D. a rarefaction E. an antinode
asked by Idali 
Calculus (trig derivatives)
A lighthouse 2 miles offshore has a light that rotates once every 20 seconds. At what rate is the light traveling along the shore if it is shining on a point 4 miles along the shore from the point nearest the lighthouse?
asked by Sarah 
calculus
Find the exact area of the surface obtained by rotating the curve about the xaxis. y=((x^3)/4)+(1/3X), 1/2≤X≤1
asked by alex 
Calculus
If dy/dt = k/y and k is a nonzero constant, which of the following could be y? A. y = √(2kt + 16) B. y = kt + 5 C. y = √(kt + 16) D. y = 5e^(kt) E. y = √(2kt) + 4 I got E by finding the integral of y dy = k dt.
asked by Anonymous 
MATHS
PQRS is a rectangle. The perpendicular ST FROM S ON PR DIVIDES ANGLES IN RATIO 2:3 .FIND ANGLE TPQ.
asked by DEEPI 
MAth
IN RECTANGLE ABCD ,AB=25CM, BC=15CM. IN WHAT RATIO DOES BISECTOR OF ANGLE C DIVIDES AB?
asked by SAM 
MAth
PQRS IS A RECTANGLE AB=25CM, BC=15CM .IN WHAT RATIO DOES BISECTOR OF ANGLE C DIVIDES AB?
asked by SAM 
Math
You have 6 bracelets and 15 necklaces. Find the number of ways you can wear one bracelet and one necklace.
asked by Hailey 
physics
The figure shows a stationary arrangement of two crayon boxes and three cords. Box A has a mass of 12.6 kg and is on a ramp at angle θ = 28.9o; box B has a mass of 6.06 kg and hangs on a cord. The cord connected to box A is parallel to the ramp, which is
asked by mik 
Physics
A uniform rod of mass 444 g and length 1.41 m is pivoted about one end and oscillates in a vertical plane. Find the period of oscillations if the amplitude of the motion is small. The acceleration of gravity is 9.8 m/s^2. Answer in units of s.
asked by Dj 
Statistics
The correlation coefficient between X and Y is the same as the correlation coefficient between Y and X: True or False  I believe it is True because calculating the correlation coefficient for X and Y and Y and X will give you the same answer.
asked by Tom