Questions Asked on
April 6, 2015

Physics
On March 15, 2015 we observed the explosion of a star in our galaxy that is 250ly away. On what date did this explosion actually happen?
asked by Linda 
chemistry
If 5.40 kcal of heat is added to 1.00 kg of ice at 0⁰C, how much liquid water at 0⁰C is produced? Show all calculations leading to an answer.
asked by allexelle 
chemistry
The Kw of water varies with temperature. Calculate the pH of water at 46⁰C with a Kw = 1.219 x 1014. Show all calculations leading to an answer.
asked by allexelle 
math
joel runs 7 miles in 60 minutes. at the same rate ,how many miles would he run in 24 minutes
asked by Rachel 
ET1210 DC/AC FUNDAMENTALS
if the resistance is halved and the voltage is not changed, what will happen to the current in resistive circuit?
asked by Anonymous 
ET 1210 FUNDAMENTALS
IF THE VOLTAGE IS DOUBLED AND THE RESISTOR IS NOT CHANGED, WHAT WILL HAPPEN TO THE CURRENT IN A RESISTIVE CIRCUIT
asked by Anonymous 
calculus
A ball is thrown from an initial height of 130 feet with an initial upward velocity of 35ft/s . The ball's height H (in feet) after T seconds is given by the following h=1306t16t^2
asked by juan 
Precal
Solve for x 9^x  4 * 3^x +3=0 I know the 9^x = (3^x)^2
asked by Anonymous 
physics
Why the blood pressre in human greater at the feet than in the brain?
asked by edward 
math
1. The cost C of joining FitFast Gym includes an initial membership fee of $127, plus a monthly fee m of $28. The cost of going to the gym is a function of the number of months of membership. Find the rule for the function. 2. Find the cost of using the
asked by please help ASAP 
calculus
A ball is thrown vertically upward with an initial velocity of 128 feet per second, the ball’s height after t second is s(t) = 128t – 16t². Find the instantaneous velocity at 4 seconds.
asked by syu 
algebra
Given that , show that =
asked by syu 
physics
A vehicle expends an energy of 25000J while moving at a constant speed of 5 ms.what is the mass of vehicle?
asked by nitya 
Differential Equation 3
(x^2+1) y^''+2xy^'=0 Solve for two power series solution about ordinary point x=0
asked by ijat 
Differential Equation 4
A differential equation governing the velocity v of a falling mass m to air resistance proportional to the square of the instantaneous velocity is m dv/dt=mgkv^2 where k>0 is a constant of proportionality. The positive direction is downward. (a)Solve the
asked by ijat 
Differential Equation 5
Construct the Fourier series of the following periodic function. f(x)= cosx, π≤x
asked by ijat 
Differential Equation 6
Solve. x^3 y^'''+5x^2 y^''+7xy^'+8y = t+e^(t)
asked by ijat 
maths
Mary has 3 toys.Bob gives her another 3 toys.How much does Mary have now?
asked by ubhj 
math
Susie bought 5 kg of flour and 4 kg of sugar for $14.80.If 3/4kg of flour cost as much as 3/5kg of sugar,find the cost of 1kg of sugar.
asked by harry 
english
According to scholars, what is one way the advent of talking pictures changed the behavior of movie audiences
asked by micelle 
psychology
analyse the tenants of psycholanalsis
asked by alice 
English
Yesterday my American friend asked me how long I had been learning English. I said I had been learning English since middle school. He was surprised. And he said, ¡°Why do you learn English?¡± When we travel to foreign countries, have a conversation
asked by rfvv 
American History
Thomas Jefferson justified the Louisiana Purchase on the grounds?
asked by POL201 
physics
an Atwood machine with two masses 6kg and 10kg. What is the tension in the chord connecting the masses. Assume the pulley is frictionless and the rope massless. Take g=9.8m/s2
asked by wolf 
American History
Under the Budget Reform and Impoundment Act, the President?
asked by POL201 
American History
Presidents often resort to the use of White House “czars” because
asked by POL201 
Differential Equation
Solve. x^3 y^'''+5x^2 y^''+7xy^'+8y = t+e^(t) **guys pls give some solution. i need help. the answer couldn't teach me anything but the solution is.Tq
asked by ijat 
Physics Fluids
A column of oil of height 70.0 cm supports a column of an unknown liquid. Assume that both liquids are at rest and that the density of the oil is 840 kg/m^3. Determine the density of the unknown liquid.
asked by Drew 
Physics Fluids
When a block of volume 1.00 × 10–3 m3 is hung from a spring scale, the scale reads 10.0 N. When the same block is then placed in an unknown liquid, it floats with 2/3 of its volume submerged. The density of water is 1.00 × 103 kg/m^3. Determine the
asked by Drew 
Physics Fluids
Water is flowing through a rectangular channel that is 12 m wide with a speed of 0.75 m/s. The water then flows into four identical rectangular channels that have a width of 3.0 m. The depth of the water does not change as it flows into the four channels.
asked by Drew 
American History
The reason that the President is called the CommanderinChief in the Constitution is because the Framers wanted ***to provide the President with authority over the secretary of defense. Question 2. Question : Thomas Jefferson justified the Louisiana
asked by POL201 
Physics
Could someone show me how to work this? It's for a study guide I'm practicing, and I just can't seem to get the correct answer. The position of a 0.63 kg object attached to a spring is described by [x = (1.09 m) cos(3.11πt)] a) Find the object’s
asked by James 
Telecommunication 2.
What is the frequency of a citizen's band(CB)radio which has a wavelength of 11.5meters?
asked by Micheal Fabia 
math
andy and april shared pie.Andy ate 2/5 of the pie april ate 1/3 how much did they eat all together
asked by travis 
physics
A car speeds up uniformly from rest so that it has a velocity of 30 ms1 after 20 second. How far does the car travel in first 10 second?
asked by Michelle 
physics
A car speeds up uniformly from rest so that it has velocity of 30 ms1 after 20 seconds. Question/ How far does the car travel in first 10 seconds?
asked by Michelle 
Business
5. A longtime expert in your field who will guide and advise you in your startup phase is called a/an A. mentor. B. investment counselor. C. contact. D. entrepreneur. My answer is b If not b then d But I'm bit sure I need help
asked by Karen 
physics
A car speeds up uniformly from rest so that it has a velocity of 30ms 1 after 20 second.How far does the car travel in first 10 seconds?
asked by Michelle 
Physics
A string is stretched by 2cm and its potential energy is u .if it is strechted by 10 cm,the potential energy is: A.u\5 B.5u C.10u D.25u
asked by Damandip 
Physics
A string is stretched by 2cm and its potential energy is u .if it is strechted by 10 cm,the potential energy is: A.u\5 B.5u C.10u D.25u
asked by Damandip 
physics
a soccer player kicks the ball of mass 0.4kg.the ball moves off at a speed of 4m/s. calculate the maximum height the ball could reach
asked by marta 
Chemistry
0.688g of antacid was treated with 50.00ml of 0.200M HCl. The excess acid required 4.21 mL of 1.200 M NaOH for backtitration. What is the neutralizing power of this antacid expressed as mmol of HCl per gram of antacid? I think the answer should be:
asked by Michelle 
civic education
list four limitations of human rights
asked by kemi 
Math
1)How many real number solutions does the equation have? 8x^28x2=0 A) One Solution B) Two Solutions C) No solutions D) Infinitely many solutions If someone could help me with this that would be great since I am confused. Thank you!
asked by Tia 
history
discuss intergroup relations
asked by kemi 
physics
A girl of mass 50kg runs up a flight of stairs.After 10 minutes she is 250 metres above the ground. Determine her average power output. Ignore the effects of friction.
asked by Bafana 
physics
calculate the force of gravity between a newborn baby of mass 2.9kg and the obstertrician of mass 100kg, who is 0.48m from the baby.
asked by elon coleman 
Chemistry
Instead of using ratios for back titrations we can also use molarities if our solutions are standardized. A 0.188g sample of antacid containing an unknown amount of triprotic base Al(OH)3 was reacted with 25.0mL of 0.101M HCl. The resulting solution was
asked by Caroline 
English
Phantom of the opera. how does the theme of horror relate with Erik's (Phantom) face deformity?
asked by Rose 
Physics
1. A point on the edge of a large wheel of radius 0.45 meters moves through an angle of 170o at a constant angular velocity of 0.25 radians/sec. . (a) Find the length (in meters) of the arc described by the point. (b) Find the linear velocity (in m/sec) of
asked by ryan 
science
100mL of oxalic acid (H2C2O4) requires 35mL of 0.04M KMnO4 to titrate it to the endpoint. calculate the molarity of the oxalic acid.
asked by aisha 
physics
2. On the spin cycle on a washing machine, the drum holding the clothes goes from zero to 180 rpm (revolutions per minute) in 8.0 seconds. (Hint: Be sure to change rpm to radians/sec.) (a) What is the angular acceleration (in radians/sec2) during this time
asked by jeff 
Physics
Two disks are originally separated. The mass of Disk #1 is 1.5 kg, and the mass of disk #2 is 2.6 kg. Disk #1 has a radius of 10 cm, and it is rotating at an angular velocity of 15.0 rad/sec. Disk #2 has a radius of 15 cm, and it rotates in the opposite
asked by jeff 
math
There are 9 red gum balls, 5 green gum balls, 8 yellow gum balls, and 8 blue gum balls in a machine. Find P(green, then yellow)
asked by Eye Candy 
US History
Which was one objection of the ayatollahs to the rule of the shah of Iran? reduced influence of religion on the government women did not have enough opportunities insufficient acceptance of all people redistribution of wealth across the population
asked by O 
masterin quantum
Consider the left shift operator on the space of infinite sequences of complex numbers: L(z1,z2,…)=(z2,z3,…). Is L injective? Yes Yes  incorrect No Is L surjective? Yes Yes  correct No Find the eigenvalues and eigenvectors of L. Then complete the
asked by JuanPro 
math
On Abby Ellen's graduation from law school, Abby's uncle, Bull Brady, promised her a gift of $24,000 or $2,400 every quarter for the next 4 years after graduating from law school. If the money could be invested at 6% compounded quarterly, which offer
asked by Maggie Hopkins 
mastering quantum mechanics
PART B (10 points possible) Consider the operator S on an ndimensional complex vector space so that S(z1,z2,…,zn)=(0,z1,z2,…zn−1). Assume the inner product is the standard one: ⟨(x1,…,xn),(y1,…,yn)⟩=x∗1y1+…+x∗nyn. Calculate
asked by JuanPro 
Algebra
Jan received $2,200 from her aunt as a birthday gift. She decided to put the money in an account to save for college. The account has a fixed interest rate of 7.7%, compounded annually. How much money will be in the account after five years?
asked by Sydney 
mastering quantum mechanics
Problem 3: Rotating a spin state (3 parts , 15 point) PART A (6 points possible) Consider the +⟩ state of a spin onehalf particle (as usual ±⟩=z;±⟩) and apply to it the rotation operator R that rotates states by an angle θ around the y axis.
asked by JuanPro 
mastering quantum mechanics
Problem 4: Variational principle and bounds (3 parts, 30 points) PART A (15 points possible) Consider a particle of mass m in a box of size L so the wave function vanishes at x=±L/2. Find an upper bound E∗ on the ground state energy Egs using a simple
asked by JuanPro 
physics
An observer can describe the motion of an object as "translational" if
asked by wolf 
Physics
The university skydiving club has asked you to plan a stunt for an air show. In this stunt, two skydivers will step out of opposite sides of a stationary hot air balloon 2,500m above the ground. the second skydiver will leave the ballon 20 seconds after
asked by Jaime 
POL201:American National Government
Theodore Lowi suggested the remedy for cumbersome bureaucracy was (Points : 1) A)returning to juridical democracy. B) delegating even more authority. C) reducing the size of government. D) throwing money at the problem.
asked by Loretta 
English
How does Erik (the phantom) from The Phantom of the Opera show romance?
asked by Rose 
maths
i am thinking of a number i multiply it by 8 and subtract 163 i would get the same answer if i multiply by 3 and subtract 13
asked by kaitlin 
chemistry
how would you prove that sodium hydroxide is a base without wing litmus paper?
asked by diana 
Chemistry
Calculate the solubility of Ag2CrO4 in a) 0.05M KClO4 b) 0.005M AgNO3 a) I have figured out: Ag2CrO4=2Ag + CrO42 Ksp=1.12*10^12. Ksp=[2Ag]^2*[CrO4] Ksp=(2x)^2(x) = 1.12*10^12=4x^3= x=2.65*10^5 (?) b)Ag2CrO4=2Ag + CrO42 Ksp=1.12*10^12.
asked by Carrie 
World History
I need help. In a brief essay, explain three ways in which the Roman Catholic Church responded to the spread of Protestantism in the sixteenth century. Describe each part of the church’s response using specific facts.
asked by Sara 
English
How does Erik (the phantom) from The Phantom of the Opera show romance? i already mentioned about his relationship with Christine, but i need two more points.
asked by Gina 
Chemistry
Consider the reaction between acetylene, C2H2, and oxygen in a welding torch: If 5.4 moles of acetylene react with sufficient oxygen, how many grams of CO2 will be formed?
asked by Angie 
Marketing
The text explains that the two central concerns of marketing are?
asked by Anonymous 
science
1.a ball with a mass 2kg rests on an incline with an angle of 10 degrees. The ball is released to roll down the incline plane neglecting all friction: Determine the following: A.the loss in potential energy after it has rolled 12m. B.the velocity after it
asked by Buhle 
geometry
Given m
asked by robin 
French (if correct translation/grammar)
Presque toutes les grandes histoires d'horreur sont également de grands romances, et histoire de Leroux d'un compositeur déformé et masqué, hantant l'opéra de Paris de labyrinthe comme un fantôme, racheté seulement par son amour pour un chanteur
asked by Gina 
Biology
Assume you had a round seed garden pea plant and you wanted to find out whether the round seed plant was homozygous or heterozygous. What would you do? (Round is dominant to wrinkled seed)
asked by Missy 
science please help asap
1.a train with a mass of 120mg accelerates uniformly on a horizontal track. The resistance to movement is 5N per kN of the mass of the train. The force in the draw bar of the locomotive is 80kN. Calculate A.The force required for the constant speed. B. The
asked by Bettina 
physics
When using a double slit with light of wavelength 504 nm, it is observed that the 4th order maximum of the interference pattern occurs at the positions of the first minimum in the diffraction pattern. If the width of the slits is 0.24 mm, what is in mm
asked by Emily 
geometry.
use midpoint formula to calculate the midpoint of AB. Name it point M and plot it in the graph. Calculate lengths AB, AM, MB. thanks for help.
asked by robin 
Biology HELP
How do you know whether something is homozygous dominant or heterozygous dominant?
asked by Missy 
French
Is this sentence correct? J'adore quand il fait chaud.
asked by Anonymous 
physics
1. An electric pump, used to obtain water from 20 metres below the ground, is marked 5000W. a) If the pump operates as rated, how much energy is used to pump water every second? b) Describe the energy conversions that take place when the pump is used. c)
asked by Jeffrey 
Calculus 2 (Series)
Can anyone help me start this problem from beginning to end, along with explanations on how to go about the problem for a better understanding how to do this series problem? 1) Find the values of p for which the series is convergent. Summation notation
asked by Sena 
geometry
sorry about nos. A(3, 2) B (5, 4).calculate midpoint. Calculate length of AB, AM, and MB. Thanks again
asked by robin 
geometry
use diagram given: m
asked by eric 
Life orientation
to what extent can itrapersonal conflict affect on choice of careet
asked by khutso 
algebra
Find a special factoring pattern for a difference of two sextics: (a^6b^6).
asked by Maggie 
physics
1. An electric pump, used to obtain water from 20 metres below the ground, is marked 5000W. a) If the pump operates as rated, how much energy is used to pump water every second? b) Describe the energy conversions that take place when the pump is used. c)
asked by Bafana 
Math
An equation can be used to find the height of a child. Equation is h=2c. The child is 36 inches at 18 months. (12in=1ft) How tall will the child be when he is 5 years old?
asked by Jade 
employment law
If the employee taking FMLA leave has unused paid vacation or sick leave, the employer may: A. require the employee to use sick leave toward the FMLA leave, but not vacation. B. not allow any time to be taken under the FMLA. C. require the employee to use
asked by breeamberr 
Math: Geometry
Joe is making a toy from a rectangular block of wood. He drills two holes, each with diameter 1.4 cm, through the block. The block of wood has length 15 cm, width 8 cm, and height 5 cm. a)What is the volume of the block before the holes are drilled? b)What
asked by Thomas Simmons 
employment law
The bona fide occupational qualification: A. operates as a defense to claims for discrimination based on religion, national origin, gender, and age. B. has been found not to apply to sex discrimination cases. C. operates as a defense only to claims for
asked by breeamberr 
math
An equation can be used to find the height of a child. Equation is h=2c. The child is 36 inches at 18 months. (12in=1ft) How tall will the child be when he is 5 years of age?
asked by Jade 
geometry
if m
asked by eric 
Math Help Please!
A bank offers two interest account plans. Plan A gives you 6% interest compounded annually. Plan B gives you 13% annual simple interest. You plan to invest 2,000 for the next 4 years. Which account earns you the most interest (in dollars) after 4 years?
asked by Kennabug 
Physics
You hold a hose 45 degrees to the horizontal and at a height of 1 m from the floor. The water reaches a maximum distance of 10 m from where you are standing. Now you place your thumb over the end of the hose to occlude the opening by 80%, which in turn
asked by carolyn 
Physics
Assume the muscle is 37C and is separated from the outside air by layers of fat and skin. The layer of fat, at a particular location on the skin, is 2 mm thick and has a conductivity of 0.53 W/mK. Finally, the outermost epidermal layer is 0.1 mm thick with
asked by carolyn 
English
I need to find 3 examples of figurative devices, and 2 examples of sound devices in Act II of Shakespeare's Othello play and write their effects(meaning + why Shakespeare decided to use these devices). Anyone have any suggestions for good lines within Act
asked by Kamri 
math
write the equation of the line: a line that goes through the point (1,5) and has a slope of 2/3
asked by matt 
Math Check
A bank offers two interest account plans. Plan A gives you 6% interest compounded annually. Plan B gives you 13% annual simple interest. You plan to invest 2,000 for the next 4 years. Which account earns you the most interest (in dollars) after 4 years?
asked by Kennabug 
algebra
A cubic polynomial function f(x) has leading coefficient 2 and intercepts the yaxis at 2. If f(1)=1, and f(2)=2, find f(1) and write the complete function.
asked by April 
Math
Carol has a collection of 100 stamps. The graph below shows the percentage of stamps she has from each country. France=24% Italy=25% England=22% Norway=29% How many of Carol's sta,ps are from Noraw than from France? A. 5 stamps B. 24 stamps C. 29 stamps D.
asked by Anonymous 
health
1.why is it necessary to make a pressure bandage for a bleeding injury a)to cover the wound so id does not get contaminated b)to create a barrier so the blood does not infect the rescuer c)to help stop the bleeding by applying continuous pressure****
asked by #HOMEWORK 
Science
I really need help with my science which is based on Galileo Galilei. I need information about his early life,education, his fun facts, his contributions,and how his contributions affect us. i got some information but i need help finding proper info.
asked by Albert Einstein 
Math
Find the next three terms sequence. 2,12,72,432,.... A. 1,728, 6,912, 27,648 B. 1,728, 10,368, 62,208*** C. 2,592, 10,368, 41,472 D. 2,592, 15,522, 93,312 ASAP is good, but if not no prob!
asked by Anonymous 
math
How do I write complex and real roots? For example, if the real roots are 1, 1 and the complex roots are i, i how do I write those down? It'd be x:1, x:1, x:i, x:i, correct? Or am I wrong?
asked by Ortega 
English
What aspects of Langston Hughes's poetry did people not like in general?
asked by Anonymous 
Math
A survey of 594 studnets about the sports program at a school finds the following results: 495 students like the program 99 students think the program is inadequate. If a circle graph were made from the data, what would the measure of the central angle be
asked by Anonymous 
physics
an 83.2 kg girl is standing on a frictionless ice surface through a 2.00 kg book at 12.6 m/s at what velocity does the girl move across the ice?
asked by Anonymous 
Math
Lisa takes a loan of $10,500 at a 9% simple interest rate for 7 years. a. How much interest will she pay after 3 years? b. how much interest will she pay in total for the loan? a. $2,835.00; $6,615.00 b. $8,280.00; $9,720.00 c. $13,598.00; $19,194.00*** d.
asked by Anonymous 
Math
Chocolate chip: Adults=5 Children=10 Peanut butter: Adults=8 Children=6 Oatmeal: Adults=7 Children=4 What percentage of the children chose penut butter? A. 70% B. 25% C. 30% D. 45% Is the answer B? Thank you
asked by Anonymous 
Science
what are some challenges to biodiversity
asked by Help 
Math
James is training for a marathon. Every week, he increases the distance he runs by 15%. If James is running 8.5 miles this week, how far will he be running 2 weeks from now? I did 30/100=x/8.5 . I thought that if I did 30 (for 2 weeks) instead of 15 (1
asked by Deandrea 
physics
an archer shoots an arrow into a piece of wood. the arrow is traveling at 120km/h when it strikes the wood. the arrow penetrates 3.8cm into the wood before stopping. what is its average acceleration (in m/s squared) into the wood?
asked by tommy 
math
How do I find three ordered pair solutions for xy=4
asked by Rashad 
business statistics
pkg1 pkg2 215 148 89 70 367 292 find the relative frequency of occurrence approach to determine the probability that a tube of toothpaste sold had packaging style 1
asked by charissa 
Math
A backtoback stemandleaf plot showing the points scored be each player on two different basketball teams is shown below. Team 1   Team 2 6 1 0 3 7 8 4 2 14 6 8 9 9 6 3 25 7 Key: 402 means 4 points for Team 1 2points for team 2 What is the
asked by Anonymous 
algebra
How do I rewrite this equation using radicals instead of rational exponents? I rewrote the whole equation in simplest form 25x^(11/10)4√y How do I rewrite it with radical exponents?
asked by Maggie 
English
2.The child was reluctant to (access/venture) into the closet at night because he was unsure whether childeating monsters really inhabited it in the dark Venture? 3.Th Members of the student council(circulated/convened) promptly affter school to finish
asked by M 
english
In the following sentences, what word does the participial phrase modify? Everyone in the annex heard her screaming loudly. (1 point) a) everyone b) annex c) heard d) her pl E A S E HE L P
asked by dd 
Government
1. Suppose that the Articles of Confederation are still in force and that a resolution has been proposed that would abolish the executive committee and replace it with a president. Now suppose that, out of the thirteen states, only Pennsylvania did not
asked by Nadia 
english
which sentence contains a participial phrase? a) she wanted to spend time writing. b) her job is giving the attic dwellers their food. c) quickly snatching up the coat, she ran to her room. d) to get along well requires cooperation. which sentence contains
asked by dd 
Language Arts
I had to put transition words, fix any mistakes, and make the following paragraph better. It is on a book called Tuck Everlasting. It is a paragraph saying the similarities of the book and movie version. This is the best I could do. Can u see what you can
asked by Kaashif 
Finite Math
P(R or S)=.64 P(R)=.38 P(S)=.52 Probability Union Rule P(R and S)=P(R)+P(S)P(R and S) .64=.38+.52P(R and S) .54=.9P(R and S) At this point, how do I deal with the P(R and S)? I know the final answer is .26, but how do I get there?
asked by Ken 
math
The school raised $1518.75 by charging an adult $3.75 and a student $2.50. The total attendance was 520. express each equation in slopeintercept form and graph each line ?
asked by TJ 
Science
H2) > H^+ + OH^ Is this equation balanced
asked by M 
Algebra
(t^(1/2)+2)^2
asked by Vicki 
Math
Bob has designed a rectangular storage unit to hold large factory equipment. His scale model has dimensions 1 m by 2 m by 4 m. By what amount should he increase each dimension to produce an actual storage unit that is 9 times the volume of his scale model?
asked by Max 
Science
what is an isotope
asked by M 
math
A nickel is 1/16 of an inch thick.Carrie has 7 nickels,what is the thickness of her 7 nickels?
asked by Anonymous 
Math
Your teacher made the comment that more than 100, 00 ping pong balls would fit in the school gym. develop a calculation method to see if she is right. after taking some measurements, propose the amount the gym would hold. i din't really understand how to
asked by Angelina 
Algebra
(5x^(1/3)+1)(25x^(2/3)5x^(1/3)+1)
asked by Vicki 
ART
I've been searching for this question about Ben Quilty .Can you please see if there is an answer on websites the question is What training did Ben Quilty undertake to become an artist ?
asked by SARINA 
english
2. Which of the following is the best reason to use visuals in a research presentation? A)) to illustrate your main point in an engaging manner B)) to illustrate any topic with data in percentages C)) to show different ways of looking at the same
asked by dd 
Algebra
What is the square root of 49a^4+686a^3+2401a^2 Do NOT assume that a represents a positive number
asked by Vicki 
algebra
how to solve 3/(x^29)x/(x^26x+9)+1/(x+3)
asked by Corey 
Physics
Radio waves travel at the speed of light, which is 3.00 ✕ 108 m/s. What is the wavelength for a FM station broadcasting at 97.9 MHz (the prefix M is "mega" and means 106)?
asked by Ginny 
Physics
What is the fundamental frequency on a 5 m rope that is tied at both ends if the speed of the waves is 24 m/s?
asked by Ginny 
Science
Which two elements represent the same family of the periodic table? Hydrogen Helium Lithium Fluorine Is it none??
asked by M 
physics
Consider eight twocubic centimeter (2 cm3) sugar cubes stacked so that they form a single 2 x 2 x 2 cube. How does the surface area of the single, large cube compare to the total surface area of the individual eight cubes? Report your answer as a ratio.
asked by Ciara 
Math
On Tuesday, Leslie spent 47 minutes on math homework, 39 minutes on science homework, 52 minutes on English homework, and 44 minutes on history homework. How much time did Leslie spend doing her homework on Tuesday?
asked by Maddie 
Math
I have to find the median, the lower quartile, the upper quartile, minimum number, and maximum number of this data set I just want to make sure I am right. 73,73,78,78,81,87,89,92,93,95 My answers Median=84 Lower quartile=78 Upper quartile=92 Minimum
asked by Anonymous 
art
Sorry to bother you again its also this last question What feelings are expressed in the Margaret Olley? any websites in mind if yes thankyou so much
asked by SARINA 
geometry
use the midpoint formula to find endpoint c. A = (3, 2) B is midpoint (5, 4). I know AB is I/2 of AC. I tried and got x= 14, y= 11. Correct? and how do you graph it? Thanks
asked by kirk 
math
Estimate 99 9/19 + 1/5, Use benchmarks to estimate the total
asked by karen 
Art im so sorry whoever is reading this
sorry it was about her i needed the painting of her by Ben Quilty what feeling are expressed in the painting still are there any websites please
asked by SARINA 
Calculus
Let f(x)=(lnx)^4 f'(x)=4(ln(x))^3/x what is f'(e^2)=?
asked by Dani 
AP CALC
At any time t=>0 , in days, the rate of growth of a bacteria population is given by y' = ky, where y is the number of bacteria present and k is a constant. The initial population is 1500 and the population quadrupled during the first two days. By what
asked by Rachel 
Math
Ms. Allison drew a boxandwhisker plot to represent her students scores on a midterm test. These are the numbers on the boxandwhisker plot. Lowest value=44 Lower quartile=47 Median=52 Upper quartile=81 Highest value=96 Jason received 81 on the test. How
asked by Anonymous 
Chemistry
A 25.00 mL sample of HCl was titrated with 35.79 mL of 0.250 M KOH. The concentration of the HCl solution is:
asked by Kay 
English
Which sentence should be edited to eliminate its cliché? A. The texture of the burlap was a cross between woven straw and a threeday beard. B. The family was immensely relieved when GreatAunt Martha's condition progressed from "critical" to "it looks
asked by Lauren 
Math
Which stemandleaf plot represents the data set below? 56,65,67,72,85,88,89,96,97,104,113 A. 56 65 7 72 85 8 9 96 7 104 113 Key:89 means 89 B. 56 65 7 72 85 8 9 96 7 10 4 11 3 C. 56 65 6 7 72 85 9 96 7 8 104 113 D. 56 65 7 72 85
asked by Anonymous 
Physics
Which of the following household electrical appliances has the greatest rate of energy consumption? ITEM VOLTAGE CURRENT A. Video Camera 6.0 V 1.6 A B. Radio 4.5 V 0. 45 A C. Cassette Recorder 6.0 V 2.2 A D. Ghetto Blaster 12 V 1. 4 A .
asked by sarah 
Chem
The following represent the Ka values for a series of weak acids. Which would be the best choice to prepare a buffer at pH=4.00? 2.7 x 10^4 1.2 x 10^4 4.3 x 10^8
asked by Amanda 
math
Determine whether it is possible to draw a triangle given each set of information. Sketch all possible triangles where appropriate. Calculate then label all side lengths to the nearest tenth of a centimetre and all angles to the nearest degree. A) b= 3.0
asked by Mimi 
chemistry
calculate the density of NH3 gas at s.t.p.
asked by gayflor 
algebra II
if a pitcher is just as likely to throw a ball as a strike, find the probability that t11 of his first pitches are balls.
asked by Mathquestions 
English
A _______ can be used for both organizing and revising an essay. A. graphic organizer B. flowchart C. verbal sketch D. topic sentence my answer is a.
asked by Lauren 
calc
A company runs food service concessions for sporting events throughout the country. Their marketing research department chose a particular football stadium to test market a new jumbo hot dog. It was found that the demand for the new hot dog is given
asked by Dan 
Chemistry
How many grams of AlNO3 could be used to make the following prescription isotonic? Sol.Silver Nitrate 2.5% Sodium chloride q.s. Sterile water for injection There is only anhydrous dextrose 5% available
asked by herry 
calc
Let f(x)=2x+15−19ex. Then the equation of the tangent line to the graph of f(x) at the point (0,−4) is given by y=mx+b for m=? b=?
asked by Anonymous 
PreCalculus
Convert from standard to vertex form: (x+5)(x+4) x^2+ 9x + 20 (x+3)^2 + 20  9 (x+3)^2 + 11
asked by Lucina 
Physics
A 2.0kg object initially at rest explodes breaking into two pieces of mass 5.0kg and 15.0kg. If the 15.0kg piece moves with a speed 2m/s what is the speed of the 5.0kg piece? A. 6 m/s B. 15 m/s C. 5 m/s D. 20 m/s
asked by Natalie 
Math
Determine whether it is possible to draw a triangle given each set of information. Sketch all possible triangles where appropriate. Calculate then label all side lengths to the nearest tenth of a centimetre and all angles to the nearest degree. A) b= 3.0
asked by Mimi 
Physics
an object falls from a 3m height what is the speed of the object just before it touches the ground?
asked by Kat 
chemistry
a container with an initial volume of 6 liters at a temperature of 30 degrees celsius with a pressure of 2atm is changed so the temperature is now 90 degrees celsius and the volume is 8 liters. calculate the new pressure
asked by Anonymous 
physics
a skier decides to ski down a hill inclined at 12 degrees to the horizontal. He pushes on his poles and starts to slide down the slope. If his initial speed after he stops pushing is 4.7 m/s and us= 0.28, how far will mr.grewal slide down the hill before
asked by Tom 
Physics
A 1kg ball initially moving with a speed of 3m/s strikes a stationary 2kg ball headon. After the collision both balls stick together. What are the final velocities of the two balls?
asked by Nate 
Algebra 1
Find the vertex for y= x^2+1/2x+2 I could not figure out the vertex! Please help me!
asked by Rae 
Chemistry (isotonicity)
How many milligrams of NaCl should be used to make the following prescription isotonic? Dextrose anhydrous 2.5% Sodium chloride q.s. Sterile water for injection Ad 1L There is only dextrose anhydrous 5% available
asked by herry 
Help please
A hardrubber or plastic comb rubbed against wool can often be shown to have a static charge. Why does a metal comb not readily show a static charge when rubbed against wool?
asked by Ciara 
history
what are three things about Washington that made him the overwhelming favorite for the first president of the United States?
asked by jamisha 
Physics
a 12 kg physics book flies through the air with a momentum of 20kg m/s. what is its speed?
asked by Natalie 
Chemistry
Can anyone help me identify the solute and solvent in each solution with the steps if possible? Thanks! a. 10mL of acetic acid and 200mL of water b. 100.0g of water and 5.0g of sugar c. 1.0mL of Br2 and 50.0mL of methylene chloride
asked by Anonymous 
LA/READING(:
13. What is the best paraphrase of the first stanza? (1 point) I have a special place at the river where the wind goes through my hair and the ripples run across the river. I sometimes fish at the river. Sometimes I think about my life when I look at the
asked by Linda 
science please help asap
1.a ball with a mass 2kg rests on an incline with an angle of 10 degrees. The ball is released to roll down the incline plane neglecting all friction: Determine the following: A.the loss in potential energy after it has rolled 12m. B.the velocity after it
asked by Bettina 
Socials
How does education affect population growth? How does limiting birth rate affect population growth?? Please give me some good ideas, I already have some but I need more because I have to write an essay so please give me as many ideas as u can :) very much
asked by Sarah 
Physics
A rescue helicopter is lifting a man (weight = 868 N) from a capsized boat by means of a cable and harness. (a) What is the tension in the cable when the man is given an initial upward acceleration of 1.83 m/s2? (b) What is the tension during the remainder
asked by Kristyn 
Physics
A hardrubber or plastic comb rubbed against wool can often be shown to have a static charge. Why does a metal comb not readily show a static charge when rubbed against wool?
asked by Ciara 
Math
Explain in a variety of ways how you can distinguish the exponential function f(x)=2^x from the quadratic function f(x)=x^2 and linear function f(x)=2x. (Hint: Compare the rate of change using finite differences in table of values; identify a constant
asked by Piper 
1 question LA AM I RIGHT?
"The River" 1 I sit on the bank in my special place, 2 Feel the breeze that lifts my hair, 3 And watch the ripples run across the river. 4 It is so peaceful here. 5 Deep enough to justify a fishing pole, 6 Quiet enough for my every thought, 7 The perfect
asked by Linda 
science please help
1.a ball with a mass 2kg rests on an incline with an angle of 10 degrees. The ball is released to roll down the incline plane neglecting all friction: Determine the following: A.the loss in potential energy after it has rolled 12m. B.the velocity after it
asked by Buhle 
helpppppp??? please
Poets use imagery and words with different connotations and denotations. In a paragraph, define and provide an example of imagery, connotation, and denotation. Then, explain how poets use these elements to contribute to tone in a poem. Support your answer
asked by Linda 
math please help
Determine whether it is possible to draw a triangle given each set of information. Sketch all possible triangles where appropriate. Calculate then label all side lengths to the nearest tenth of a centimetre and all angles to the nearest degree. A) b= 3.0
asked by Mimi 
Calculus
a 12 foot ladder is leaning against a building. If the bottom of the ladder is sliding along the pavement directly away from the building at 1 feet/second, how fast is the top of the ladder moving down when the foor of the ladder is 2 feet from the wall?
asked by Billy the Goat 
Chemistry
If you have 324 grams KBr and want to produce a 1.48 M solution in water how many grams of water are needed?
asked by Angela 
chem
AlkaSeltzer contains the base sodium hydrogen carbonate, NaHCO3, which reacts with hydrochloric acid in the stomach to yield sodium chloride, carbon dioxide, and water. What volume of CO2 gas at 104.5 kPa and 311 K would be formed when 10.0 mL of 1.0 M
asked by vc 
chem
A typical fluorescent light bulb contains argon gas and mercury vapor.? a. If the total gas pressure in a fluorescent light bulb is 307.1 Pa and the partial pressure of the argon gas is 306.0 Pa, what is the partial pressure of the mercury vapor? b. If a
asked by vc 
physics
An elevator and its load have a combined mass of 1962 kg. Find the tension in the supporting cable when the elevator, originally moving downward at 7.5 m/s, is brought to rest with constant acceleration in a distance of 4.2 m.
asked by joe 
PLEASE HELP?????LANGAGUE ARTS
13. What is the best paraphrase of the first stanza? (1 point) I have a special place at the river where the wind goes through my hair and the ripples run across the river. I sometimes fish at the river. Sometimes I think about my life when I look at the
asked by Linda 
PHYSICS
What power (in horsepower) is developed by a grinding machine whose wheel has a radius of 8.10 in and runs at 2.50 rev/s, when the tool to be sharpened is held against the wheel with a force of 43.0 lb? The coefficient of friction between the tool and the
asked by Beckles 
Chemistry
The ethylammonium ion, CH3CH2NH3+, has a pKa of 10.81. It reacts with water to form ethylamine, CH3CH2NH2 and H3O+. Which of the following statements is true at pH 7? A.) ethylamine predominates B.) ethylammonium ion predominates C.) the pH is higher than
asked by Kristin 
Chemistry
The Ka for the reaction of acetic acid and water is 1.8 x 105. Which of the following statements is true at pH 7? A.) there is much more acetic acid than acetate ion B.) there is more acetate ion than acetic acid C.) the concentration of acetate ion is
asked by Kristin 
intermediate algebra
3/(x^29)x/(x^26x+9)+1/(x+3)
asked by Tripp 
IINFORMATION SYSYTEM
forwarding table using switches
asked by SHYAM 
1 question omh help??
1 I sit on the bank in my special place, 2 Feel the breeze that lifts my hair, 3 And watch the ripples run across the river. 4 It is so peaceful here. 5 Deep enough to justify a fishing pole, 6 Quiet enough for my every thought, 7 The perfect place to
asked by Linda 
social studies
What incentive did Spanish explorers have for settling the Caribbean islands? a)spices and silks b)faster trade routes c)land for plantations*** d)abundant sources of furs
asked by #HOMEWORK 
Math
carla has several bags of candy that have different weights. Each x represents one bag. Carla wants the total weight of the bags to be four pounds. If she can only pick one more bag, which one should she pick
asked by Sharon 
Accounting
1/2/15 Purchased patent (6year life) $521,580 4/1/15 Goodwill purchased (indefinite life) 395,170 7/1/15 14year franchise; expiration date 7/1/2025 519,400 9/1/15 Research and development costs 169,890 Prepare the necessary entries to record these
asked by Anonymous 
Calculus
a 14 foot ladder is leaning against a building. If the bottom of the ladder is sliding along the pavement directly away from the building at 3 feet/second, how fast is the top of the ladder moving down when the foor of the ladder is 5 feet from the wall? I
asked by Billy the Goat 
Calculus
Find the rate of change of total revenue, cost, and profit with respect to time. Assume that R9x) and C9x) are in dollars. R(x)=60x0.5x^2 C(x)=5x+15 x=30 and dx/dt=20 units per day
asked by Billy the Goat 
Chemistry
Sodium vapor lamps are often used in residential street lighting. Sodium gives off two yellow lines of light having frequencies of 5.09 × 1014 Hz and 5.08 × 1014 Hz. What is this wavelengths of light in nm? would I start by using the following formula
asked by Stacie 
physical science
What is the amplitude of a longitudinal wave
asked by justin 
Chemistry
What is the volume, in milliliters, required to prepare a. 20.0 mL of a 0.250 M KNO3 solution using a 6.00 M KNO3 solution b. 25.0 mL of a 2.50 M H2SO4 solution using a 12.0 M H2SO4 solution c. 0.500 L of a 1.50 M NH4Cl solution using a 10.00 M NH4Cl
asked by Anonymous 
Accounting
Bus Acquired Cost Salvage Value Useful Life in Years 1 1/1/13 $98,100 8,000 5 (straightline) 2 1/1/13 129,000 11,900 5 (decline balance) 3 1/1/14 79,780 8,200 4 (unitsofactivity) For the decliningbalance method, the company uses the doubledeclining
asked by Anonymous 
Calculus
Cost: C^2=x^2+98*sq rt of x + 57 Revenue:890(x4)^2+29R^2=26,100 Find the marginal cost dC/dx at x=4
asked by Frankzilla 
Calculus
Evaluate dy/dt for 2xy2x+2y^3=10 with the conditions dx/dt=4 x=2 y=1 dy/dt=?
asked by Frankzilla 
social studiesssssssssssssssssssssssssssss
2. Why did the United States enter World War I? (Choose all that apply.) (2 points) U.S. leaders wanted German territory. U.S. leaders wanted to aid German efforts in the war. U.S. leaders believed Germany had violated international law. The U.S. economy
asked by Linda 
Math
Transform the graph of f(x)=3^x to sketch g(x)=3^−(x+1) −2. Show table of values and each transformation clearly to get full marks. (15,marks)?
asked by Piper 
science 1 question
4. When a fan is turned on, it changes electrical energy into __________ energy. (1 point) motion magnetic gravitational*** electromagnetic
asked by Linda 
social studies
1.which of the following was a positive effect on the industrial revolution a)cities became overcrowded b)militarism c)fascism d)depression
asked by #HOMEWORK