Questions Asked on
December 21, 2012

I NEED HELP!.. Algebra
Find a solution to the following system of equations. 5x + y = 5 4x + 2y = 2
asked by Laura 
algebra
What is the solution of the system of equations? y = 3x + 7 y = x – 9
asked by Sophie 
Physics
We want to rotate the direction of polarization of a beam of polarized light through 90 degrees by sending the beam through one or more polarizing sheets.(a) What is the minimum number of sheets required? (b) What is the minimum number of sheets required
asked by Brian 
geometry
In the diagram below,BC is an altitude of ABD. What is the length of CD? If necessary, round your answer to two decimal places.
asked by armando 
VERY URGENT MATH!!!
1. 3w – 10w (1 point) 13w –7w –7 7w 2. y + 2y +3z (1 point) 2y + 3z 3y + 3z 2y2 + 3z 6yz 3. 6r + r – 5r (1 point) 2r 1r + r 0r 7r – 5r 4. 5x + 2(x + 6) (1 point) 7x + 6 7x2 + 12 7x + 12 7x (x + 6) 5. –3m + 3(m + 6) (1 point) 6 –6m + 6 6m + 18
asked by Gabby 
algebra
Solve the system of equations using substitution. y = 2x + 3 y = 3x + 1
asked by Nestor 
This needs tobe turned in in 10min AT MOST URGENT!
1. x over 5= –2 (1 point) –45 35 –10 21 2. 13x – 7 = 136 (1 point) 11 15 8 9 3. Solve the following equation: 3x – 3 = 15 (1 point) 4 5 6 7 4. Ernesto loses 14.5 pounds in 7 months. Now he weighs 156.5 pounds. Which equation can be used to find
asked by Gabby 
algebra
In a basketball game, a regular basket was worth 2 points and a longdistance basket was worth 3 points. If there were 45 baskets in a game and 96 points total, how many regular baskets r and longdistance baskets l were made? Show the correct system of
asked by Sophie 
algebra
Which graph represents the following system of equations? y = 3x + 3 y = –x – 3
asked by Laura 
algebra
Solve the system of equations using substitution. y = 2x – 10 y = 4x – 8
asked by Laura 
physics
Tracy (of mass 49 kg) and Tom (of mass 65 kg) are standing at rest in the center of the roller rink, facing each other, free to move. Tracy pushes oﬀ Tom with her hands and remains in contact with Tom’s hands, applying a constant force for 0.5 s. Tracy
asked by Anonymous 
Math
Twelve people serve on a board and are considering three alternatives: A, B, and C. The choices followed by vote is shown in following table. Determine the winner, if any, using a Borda count. (ABC) 2 (ACB) 4 (BAC) 2 (BCA) 1 (CAB) 2 (CBA) 1 The winner is
asked by DC 
Calculus
Suppose that f(x), f'(x), and f''(x) are continuous for all real numbers x, and the f has the following properties. I. f is negative on (inf, 6) and positive on (6,inf). II. f is increasing on (inf, 8) and positive on 8, inf). III. f is concave down on
asked by Anonymous 
maths plse help me..
A fruit vendor buys 300 apples at Rs 50 per dozen. The vendor sold 200 of them at Rs 50 per 10 apples. At what rate per apple should the vendor sell the remaining apples to make an overall profit of 12% ?
asked by Anonymous 
algebra
Does the system of equations have no solution, one solution, or infinitely many solutions? y = x + 4 y – 4 = x
asked by Laura 
algebra
You decide to market your own custom computer software. You must invest $3,255 for computer hardware, and spend $2.90 to buy and package each disk. If each program sells for $13.75, how many copies must you sell to break even?
asked by Sophie 
algebra
At the Wild Thing Zoo, you can rent a motorized cart to tour the grounds for a $4 initial charge and $4 per hour. An equation that represents the total cost y for x hours is y = 4 + 4x. At Safari Zoo, you can rent the same cart for a $3 initial charge and
asked by Sophie 
chemistry
Shown below is a schematic representation of the waterethanol phase diagram. Making reference to the phase diagram, explain in a few sentences how one could enrich a solution of 15 percent ethanol  85 percent water to a composition of 60 percent ethanol
asked by C 
PHYSICS
1. What is the weight of a 2.88 kg snake? 2. A girl drops a rock straight down from a bridge. Assume negligible air resistance. How fast is it going 4.0 s later? 3. A rock with a mass of 22.45 kg is falling from a tall tower. a. What is the Net Force if
asked by Hayden 
PHYSICS
1. Why is an electric field considered to be a vector quantity? 2. Draw the electric field around an electric dipole of +1 µC and 1 µC 3. How many electrons have been removed from a positively charged object if it has a charge of 1.5 x 1011 C? 4. A
asked by Hayden 
applied business law
As company ombudsman, your task is to investigate complaints of wrongdoing on the part of corporate directors and officers, decide whether there is a violation of the law, and deal with the wrongdoers accordingly. Jane, a shareholder of Goodly Corporation,
asked by annomyons 
math
a florist has 20 daisies and 36 carnations. She wants to put the same number of each type of flower into vases. what are the possible number of vases she can use?
asked by stephy 3 
Science
For lunch, you have a turkey sandwich on wheat bread with mayonnaise and lettuce. Describe how each component of this meal would be broken down in the digestive system. Thanks.
asked by Hlah 
Chemistry
What is the voltage for CuCl2 + Zn ZnCl2 + Cu?
asked by Anonymous 
Calculus
a 5m ladder rests against a vertical wall. The top of the ladder begins sliding down the wall at 2m/sec, while the foot of the ladder moves away from the base of the wall. How fast is the foot of the ladder moving away from the wall at the instant the foot
asked by Lost One 
maths
what is the volume of box if volume of cylinder is 48.125 cubic cm, which formed by rolling a rectangular paper sheet along the length of the paper. if a cuboidal box (open lid) made from the same sheet of paper by cutting out the four square of the side
asked by omkar gangwar 
Calculus
Find dy/dx of 3 sin x cos y = 2 using implicit differentiation.
asked by Lost One 
english
how does Romeo show he is fearless when he kills Tybalt? and how does Romeo show hes fearless when he goes an see Juliet on the balcony?
asked by zackary 
algebra
Does the system of equations have no solution, one solution, or infinitely many solutions? y = 2x – 3 y = –x + 3
asked by Laura 
algebra
Identify the graph of the pair of equations as parallel, intersecting, or identical. y = 5x – 4 y = 5x – 5
asked by Laura 
EnglishCItation
How to cite a PDF file?
asked by Anonymous 
Math
A street is 282 m long is covered with snow. City workers are using a snowplow to clear the street. A tire on the snowplow has to turn 47 times in traveling the length of the street. What is the diameter of the tire?
asked by Josh 
algebra
The length of a rectangle is 2 cm more than four times the width. If the perimeter of the rectangle is 84 cm, what are its dimensions?
asked by Nestor 
Darton College
Explain how the process of combining radicals through addition and subtraction is similar to combining polynomials. What make two radicals like radicals
asked by Standford 
Calculus
Find the local linearization of g(x)=sqrt 4x near x=2 use local linearization to estimate g(2.05) is your estimate too high or too low?
asked by Clay 
Math...Please Help!
Triangle ABC has coordinates A(1, 4); B(3, –2); and C(4, 2). Find the coordinates of the image A'B'C' after a reflection over the xaxis.
asked by Kayla 
algebra
Solve the system of equations using substitution. y = x + 6 y = –2x – 3
asked by Laura 
Financial Management
Coogly Company is attempting to identify its weighted average cost of capital for the coming year and has hired you to answer some questions they have about the process. They have asked you to present this information in a PowerPoint presentation to the
asked by Mimosa 
Accounting
statement that the difference between the opening bank balance ($30,000) and the January statement balance ($75,000) is pure profit.
asked by James 
algebra
The sum of two numbers is 82. Their difference is 24. Choose the system of equations that describes this situation. Solve by elimination to find the two numbers.
asked by Laura 
algebra
Hey, I don't undertand how to solve this equation using substitution. 3y = 1/2x + 2 y= x + 9
asked by Laura 
english
“In the snow” is repeated three times in “Scott’s Goodbye.” What meaning might the writer have hoped to convey by repeating this phrase? (1 point) The snow was breathtakingly beautiful. The snow and cold were inescapable. The snow was melting
asked by lexi 
Math
Assume f(x) = x2 + 3. Find the functional value requested. f(5) =
asked by Tammy Jones 
Math
The campus vets club is having a raffle and is selling 2,700 tickets. If the people on your floor of the dorm bought 297 of those tickets, what is the probability that someone on your floor will hold the winning ticket? (Enter your answer as a decimal.)
asked by Tammy Jones 
Math
Suppose that people's heights (in centimeters) are normally distributed, with a mean of 175 and a standard deviation of 6. We find the heights of 80 people. (a) How many would you expect to be between 167 and 183 cm tall? (b) How many would you expect to
asked by Tammy Jones 
physics
The horizontal surface on which the block of mass 5.2 kg slides is frictionless. The force of 64 N acts on the block in a horizontal direction and the force of 128 N acts on the block at an angle as shown below. 5.2 kg 128 N 60 ◦ 64 N What is the
asked by Anonymous 
Math emergancy
find the two ratios that are eequivalent to each given ratio 9/12 4/20 15/25 7/12 14/7 11/22 10/3 18/28 12/27 i don't no how to do this so yea please answer
asked by destiny 
physics
The bars are in equilibrium, each 5 m long, and each weighing 82 N. The string pulling down on the two bars is attached 0.6 m from the fulcrum on the leftmost bar and 0.5 m from the left end of the rightmost bar. The spring (of constant 32 N/cm) is
asked by Anonymous 
physics
A riﬂe ﬁres a(n) 3 g bullet with a muzzle velocity of 370 m/s into a block of wood. The bullet comes to rest after it has made a(n) 17 cm deep hole in the wood. v a What is the magnitude of the average frictional force slowed the bullet? Answer in
asked by Anonymous 
Science
is the change of seasons an example of climate change?
asked by Anonymous 
ap calculus
f(x)=x^32x^2+x and f'(x)=3x^24x+1 Find the value(s) of x where f(x) has a horizontal tangent (slope=0)
asked by sandra 
Health
Tell me about everything on male and female reproductive system you know.
asked by Kailie 
physics
An object is thrown vertically upward such that it has a speed of 56 m/s when it reaches two thirds of its maximum height above the launch point. Find the maximum height h. The acceleration of gravity is 9.8 m/s 2 . Answer in units of m
asked by Anonymous 
Math emergancy
find the two ratios that are eequivalent to each given ratio 9/12 4/20 15/25 7/12 14/7 11/22 10/3 18/28 12/27 i don't no how to do this so yea please answer
asked by destiny 
Math
Mary is as old as Mario will be when Mary is twice as old as Mario was when Mary’s age was half the sum of their present ages. Mario is as old as Mary was when Mario was half the age he will be 10 years from now. How old are Mary and Mario?
asked by Ash__ 
PHYSICS
1. A sound with a frequency of 261.6 Hz travels through water at a speed of 1435 m/s. What is the wavelength of the wave? a. 1.83 x 10 1 m b. 3.753 x 10 5 m c. 5.486 m d. You cannot tell from the given information 2. A 23.0 kg mass of is accelerated at +
asked by Hayden 
language arts
The point in the plot where Mr. Clemens falls and injures himself is the ____. (1 point) climax rising action exposition falling action Is it the rising action?
asked by lexi. 
compositionII
In Weeks 611, you will write a research paper. Your completed paper will be 57 pages in length. In Week 8, you finalized your thesis and prepared an outline of your paper. This week, Week 9, you’ll write your rough draft. Using Microsoft Word, prepare
asked by annomyons 
Ms.Sue or Steve can u please help me?!?!!?
Ok these are some textbook questions i need to turn in soon could you please check and see if they are correct~ 1. x over 4 + 1 = –5 (1 point) –2 16 4 –24 2. 6x + 29 = 5 (1 point) –4 –18 204 –144 3. Combine like terms: –21a + 16a (1 point)
asked by Gabby 
algebra URGENT!
Solve the system using elimination. 2x – 2y = –8 x + 2y = –1 And this one: Solve the system using elimination. 3x – y = 28 3x + y = 14 Pleease help me :(
asked by Laura 
microeconomics
How the technical rate of substitution and marginal product are related and what is their difference? i only wrote their definitions The technical rate of substitution measures the rate which the firm has to substitute one input for another, for keeping
asked by liza 
Science need help
Astronomers believe that the biggest stars in the Galaxy may be a hundred times more massive than the Sun, but are a million times brighter. Would you expect such stars to have longer, shorter or comparable lifetimes to that of the Sun?
asked by zak 
Chemistry
how much heat must be lost by 375 g of water for it to change from a liquid to a solid?
asked by Halie 
math
Find the volume of the solid generated by revolving the curves y=x^2+1 & y=x+3. after finding the intersection, x= 2 & x=1 can someone show me how to integrate this funct. with simplest steps(i mean do not use substitution formula). if im x miataken the
asked by ifi 
math 2
a citrus farmer wants to plant 24 lemon trees and 30 orange trees in equal rows. he wants the same number of each type in each row. what are the possible number of fruit trees that could be in each row?
asked by stephy 3 
maths plse help me..
7root3/(10^1/2 +3^1/2)  2root5/(6^1/2+5^1/2)  3root2/(15^1/2+3^root2)
asked by Anonymous 
maths plse help me..
MNT is a triangle in which A point lies on MN and B lies on MT. join AB. Now,if NT/AB =9/5 and if MB=10cm , then MN will be ??
asked by Anamika 
maths
integrate x^2/(x^4+a^4) dx
asked by sapna 
maths
there are two circles touching each other at one point. The radius of bigger circle is 4cm and smaller is 1cm. A small third circle is drawn which touches both the first two circles at one point each. A common tangent passes through all the three
asked by faizel 
Algebra 1
An airplane travels 6200 km against the wind in 8 hours and 7080 km with the wind in the same amount of time. What is the rate of the plane in still air and what is the rate of the wind?
asked by joe 
physics
A mass makes a projectile motion on a table (like the one in the projectile motion experiment) with inclination angle of the table as α=6o. The initial velocity and the initial angle are is 100 cm/s and 30 deg. respectively. What is the maximum height
asked by anonymous 
physics
Think of a projectile motion on an inclined table with the inclination angle α=6.The elevation angle is θ=30 and V0 is 40 cm/s. What is the percentage error (approximately) in hmax if the measured value of hmax is 5 cm? (sin6=0.1, g=10 m/s2)
asked by anonymous 
Algebra
Suppose that people's heights (in centimeters) are normally distributed, with a mean of 175 and a standard deviation of 6. We find the heights of 80 people. (a) How many would you expect to be between 167 and 183 cm tall? (b) How many would you expect to
asked by DC 
Algebra
The campus vets club is having a raffle and is selling 2,700 tickets. If the people on your floor of the dorm bought 297 of those tickets, what is the probability that someone on your floor will hold the winning ticket? (Enter your answer as a decimal.)
asked by DC 
Algebra
A club consists of 16 men and 19 women. In how many ways can they choose a president, vice president, treasurer, and secretary, along with an advisory committee of six people? (Round the answer to five decimal places.) _____ x 10(to the 11th power) ways
asked by DC 
Math
Twelve people serve on a board and are considering three alternatives: A, B, and C. The choices followed by vote is shown in following table. Determine the winner, if any, using a Borda count. (ABC) 2 (ACB) 4 (BAC) 2 (BCA) 1 (CAB) 2 (CBA) 1 The winner is
asked by Regina M 
Math
Find the probability whose odds against are given in the problem. Odds against are 5 to 7. ____?
asked by Regina M 
Math
Do the following. (a) Write the expression in terms of natural logarithms. (Express all logarithmic functions in terms of ln(x) in your answer.) log 8.6 (114) =_____ (b) Give a calculator approximation (correct to four decimal places). log 8.6 (114)~~_____
asked by Regina M 
m
Solve the equations. (a) 2D + 3 = 13 D = _____ (b) 12E  3 = 0 E = _____
asked by Regina M 
Math
If possible, completely factor the expression. (If the polynomial is not factorable using integers, enter PRIME.) x^2  4x  5 = _____
asked by Regina M 
math
what is the average of 82,58,13
asked by cameon 
PHISIC help
A bouncy rubber ball is dropped from a height of about a metre above the ground .it falls to the ground, bounces and then rises back to almost the height from which it was dropped. Describe the main energy transformations that take place from the point at
asked by zak 
Language Arts
Scott’s Goodbye We saw the months of wicked weather, As day to painful night did turn, Waiting, huddled close together For the frozen sun’s return. Our nights were almost endless torture. Our food was gone. Our fuel was low. We came in search of grand
asked by Eric 
math
The breaking strength (in pounds) of a certain new synthetic is normally distributed, with a mean of 173 and a variance of 9. The material is considered defective if the breaking strength is less than 167 pounds. What is the probability that a single,
asked by Anonymous 
Science
Is there a website which tells me how something moves through my body when I drink it?
asked by Anonymous 
chemistry
What volume of a 6.0 M NaOH solution would you need to prepare 250.0 milliliters of a 3.0 M NaOH solution?
asked by alexis 
Calculus
If f(3) = 7 and f'(x) = sin(1+x^2)/(x^32x), then f(5) = (a) 16.006 (b) 9.006 (c) 0.008 (d) 6.992 (e) 7.008
asked by Anonymous 
Language Arts
I need Help finding in understanding to get correct answer Before we buy our tickets. (1 point) Before we buy or tickets tomorrow. Before we buy our tickets, we should check the weather. We buy our tickets before. This is a complete sentence. No correction
asked by Eric 
Calculus
If 0
asked by Anonymous 
maths plse help me..
find the path of a moving point such its distance is from two lines 3x2y=5and 3x+2y=5 are equal and state the name of path.
asked by sania 
mathssets
let A be a nonempty set such that A *B = A *C show that B = C
asked by amit 
Calculus Help!!
Region R is bounded by the functions f(x) = 2(x4) + pi, g(x) = cos^1(x/2  3), and the x axis. a. What is the area of the region R? b. Find the volume of the solid generated when region R is rotated about the x axis. c. Find all values c for f(x) and
asked by Anonymous 
Algebra w/Applications
Calculate the monthly finance charge for the following credit card transaction. Assume that it takes 10 days for a payment to be received and recorded and that the month is 30 days long. (Round your answer to the nearest cent.) $3,000 balance, 21% rate,
asked by Traci 
Sandy Hook shooting report paper
I am writing a paper for my school blog about the Sandy Hook shooting in Connecticut. I was wanting any thoughts and all of that stuff. There were many people killed; the shooter, 20 kids, 6 teachers, and his mother. What is your opinion, thoughts,
asked by fanggirl.rockrchik 
Algebra Grade 7
Mr and Mrs Chen have three children. suppose the chance of having wither a boy or girl is 50%. what is the probability of having two boys and one girl? 2/9? a survey with 104 responses asked what is your favorite winter activity the results are listed in
asked by fanggirl.rockrchik 
College Algebra
Why is t= ln(2)/.04 the same as t= 25ln(2)? Please explain it step by step. What rule do you use or how do you change the .04 to the 25?
asked by Linda 
science
What is the most abundant metal in sea water
asked by hadassah farell 
Pre Algebra Help ASAP
Which of the following equations has an infinite number of solutions? a. 3x – 3 = –4x b. 2y + 4 – y = 16 c. 7x + 5 = 4x + 5 + 3x d. 6y – 2 = 2(y – 1) And please explain how I don't understand. Thanks sooooo much!!!
asked by Anonymous