Questions Asked on
December 7, 2013

Math
1.) Can a system of linear equations have exactly two solutions? A. True B. False 2.) The solution of a system of equations with no solution describes what kind of lines? a.) parallel b.) perpendicular c.) skew d.) coincidental
asked by Josh 
science
I need an acrostic poem for the element Sodium?? puhleez?! THANX!!!
asked by Allie 
world history  NEED SERIOUS HELP
hey somebody please help me!! were told to make a front page newspaper on the following : italian renaissance renaissance society creativity in the renaissance protestant reformation spread of protestantism where can i get articles about this ?
asked by Naila 
physics
A merrygoround (pictured) is sitting in a playground. It is free to rotate, but is currently stationary. You can model it as a uniform disk of mass 200 kg and radius 110 cm (consider the metal poles to have a negligible mass compared to the
asked by annonymous 
Algebra 2
Use the Binomial Theorem to expand the binomial: (d – 4b)^3
asked by Algebraic! 
Healthcare Statistic
Create a null hypothesis for the following research questions: a. What are the differences between emergency room shifts on medication errors? b. On a clinical trial of a new drug, what will be the effects over a currently use drugs?
asked by Anonymous 
Math
A jar of peanut butter which is 3 inches in diameter and 4 inches high sells for $0.60. At the same rate, what would be the price for a jar that is 6 inches in diameter and 6 inches high?
asked by Mike 
Math
Canada Computers is having a sale on extra RAM. Ronnie calculates that the sale price of RAM is $5.45/mb . How much will Kareem pay for 10.8 mb of extra RAM?
asked by Samiha 
physics
A skier slides horizontally along the snow for a distance of 20.8 m before coming to rest. The coefficient of kinetic friction between the skier and the snow is 0.0449. Initially, how fast was the skier going?
asked by n_sdn 
Math
Ricardo is 4 years older than his sister rosa,if their ages are added together,the sum is 14. What are the ages of Ricardo and rosa?
asked by Pietro 
PHYSICS
A merrygoround (pictured) is sitting in a playground. It is free to rotate, but is currently stationary. You can model it as a uniform disk of mass 190 kg and radius 100 cm (consider the metal poles to have a negligible mass compared to the
asked by AAKa 
Trigonometry/Geometry  Inequalities
Let a, b, and c be positive real numbers. Prove that sqrt(a^2  ab + b^2) + sqrt(a^2  ac + c^2) is greater or equal to sqrt(b^2 + bc + c^2). Under what conditions does equality occur? That is, for what values of a, b, and c are the two sides equal? This
asked by Sam 
microeconomics
charlie loves watching teletubbies on his local public tv station,but he never sends any money to support the station during its fundraising drives.
asked by denise 
BIOLOGY
How will you prepare a laboratory procedure to verify the validity of the hypothesis? Give example.
asked by Angela 
Health (Ms. Sue)
1. Identify ways that you can tell if a relationship is healthy. Discuss what you can do if the relationship isn't healthy. A: You can tell if a relationship is healthy by asking yourself a series of questions, such as whether this friendship brings out
asked by Anonymous 
Health (Ms. Sue)
Identify ways that you can tell if a relationship is healthy. Discuss what you can do if the relationship isn't healthy. A: ?
asked by Anonymous 
Math Homework
Hello! I need help with these math questions, thanks! :) 1.) Solve the system by substitution. 5x + 2y = 17 x = 3y 2.) Solve the system by substitution. x/3 + y = 4/3 x + 2y = 11 3.) Solve the system by elimination. 2x  3y = 0 2x + 6y = 3 4.) Solve the
asked by Beni 
Grammar
Which sentence demonstrates correct use of modifiers? A) Startled by the noise, the alarm clock was knocked on the floor. B) Kendah found a broken glass washing her dishes. C) Rocco gave snacks to his friends in plastic bags D)Standing on a chair, I was
asked by JCRanch 
GEOMETRY CIRCLES PLEASE
1.An isosceles triangle with each leg measuring 13 cm is inscribed in a circle . if the altitude to the base is 12 cm find the radius of the circle 2. Circles a and b are tangent at point c. p is on circle a and q is on circle b such that pq is tangent to
asked by BARBIE LEE 
Healthcare Statistic
Given the following p values, which would be considered more significant? p ≤ .3 p ≤ .02 p ≤ .25 p ≤ .025
asked by Anonymous 
American Government
Television advertisers tend to prefer programs that are A. Intellectually thoughtprovoking B. conventional and inoffensive C. Controversial and challenging D. Overly concerned with factual information
asked by Anthony 
Healthcare Statistic
Given the following null hypothesis, give an example of a Type I error. H0: There is no difference between the number of males or females who go to their primary care physician for an annual exam.
asked by Anonymous 
chemistry
What volume of chlorine gas at 42.0 oC and 1.30 atm is required to react completely with 34.2 g of phosphorus (P4) according to the following reaction?
asked by Alex 
Stats
If a student's rank in a class of 300 students is 111, find the student's percentile rank
asked by Justin 
Math Help!
1.) Solve the system by graphing. You may use paper or a calculator. 2x  y = 8 x + 3y = 11 2.) The revenue for a certain brand of toothpaste is y = 2.5x where 'x' is the number of tubes of toothpaste sold and 'y' is the total income for selling 'x' tubes.
asked by Rana 
us history
The first major battle of the civil war took place at Vicksburg Manassas Antietam Shenandoah I chose Antietam. Right
asked by jay 
BIOLOGY
How could you repair an electric fan that is not working properly? Apply the scientific method.
asked by Angela 
Math
1.) Solve the system by graphing. You may use paper or a calculator. 2x  y = 8 x + 3y = 11 2.) The revenue for a certain brand of toothpaste is y = 2.5x where 'x' is the number of tubes of toothpaste sold and 'y' is the total income for selling 'x' tubes.
asked by Rana 
Math
the right triangle ABC, the altitude from vertex C divides the hypotenuse into two segments, one of length 2 and the other of length 16. Find the perimeter of triangle ABC.
asked by Lily 
Math
In a triangle ABC, AC = 36, BC = 48, and the medians BD and AE to sides AC and BC, respectively, are perpendicular. Find AB I tryed to find the sides using Pythagorean theorem but it's not working
asked by Lily 
Physics
A 2.1 kg pendulum bob hangs from a 2 meter string. It is pulled to the side, position A, so that the bob is 79 cm (h on the sketch) above the lowest position, position C. The bob is released and begins to swing. See below.
asked by JAYZ 
us history
ALL the following accurately characterize the advantages of the North and South EXCEPT: a. The Union had far greater industrial capacity, more railroads and more ships. b. The South had far more usable food supplies than did the Union. c. The Union had
asked by jay 
Math
Identify the property illustrated by the statement 2(5+9)=2•5+(2)•9 A) associative property of addition B) associative property of multiplication C) distributive property D) commutative property of multiplication
asked by Anabelle 
Health (Ms. Sue)
Are these adequate ways to cope with the changes that I have experienced? State three ways that you have experienced during adolescence. Then, identify two changes to cope with these changes. A: Three of the changes during adolescence that I have
asked by Anonymous 
Statistics
Twothirds of papaya plants availabe are hermaphrodite and are selfpollinating. Onethird of plants are female and need to be paired withh an hermaphrodite plant in order to be pollinated. Unless the plants are pollinated, they will not bear fruit. If you
asked by Angela 
Healthcare Statistic
Given the following null hypothesis, give an example of a Type II error. H0: There is no difference in the level of understanding of this chapter between students who have previously taken a statistics course and students who have not previously taken a
asked by Anonymous 
Finance
Chip’s Home Brew Whiskey management forecasts that if the firm sells each bottle of SnakeBite for $20, then the demand for the product will be 15,000 bottles per year, whereas sales will be 90 percent as high if the price is raised 17 percent. Chip’s
asked by M.B 
Math
Need help on this one. You have a spinner numbered 1 through 8. What is the probability of spinning a factor of 4 and a multiple of 2? I know the first part would be 3/8 * _ but them I'm not sure for the second fraction if it would be 4/8 or 2/8. Thanks
asked by Brandi 
Physics IMP
A yoyo of mass m= 2 kg and moment of inertia I_cm= 0.09 kg m consists of two solid disks of radius R= 0.3 m, connected by a central spindle of radius r= 0.225 m and negligible mass. A light string is coiled around the central spindle. The yoyo is placed
asked by Rukha 
Physics
I've been trying to solve this problem for the longest time, but I still can't get the answer. The answer is apparently 36 degrees below the horizontal. Please explain!! (: A missile is launched from the ground with a speed of 100 m/s at an angle of 45
asked by Student 
BIOLOGY
Identify name at least one biological science problem and prepare a procedure on how to solve such problem then recommend solutions.
asked by Angela 
Health (Ms. Sue)
Describe why it is important for teens to separate feelings and behaviors. A: Separating feelings from behaviors is important because this action makes a teenager truly more mature and independent?
asked by Anonymous 
BIOLOGY
Differentiate plants from animals based on the following: structure, locomotion, irritability, metabolic process, waste products, growth and development, outer covering and food making processes.
asked by Angela 
Math
In triangle ABC, D bisects side BC, G bisects side AB, and the points E and F trisect side AC. What is the area of the shaded polygon, if the area of ABC is 108? I tryed to find the area of triangles on the side and I figured that if you put a line from
asked by Lily 
Calculus
Given that C(x)=2x^321x^2+36x+1000 is a cost function, determine the intervals for which the cost is increasing. Determine any intervals for which the marginal cost is increasing. Marginal cost is when you derive the cost function, correct? So do you do
asked by Lindsay 
Calculus PLEASE HELP
Given that C(x)=2x^321x^2+36x+1000 is a cost function, determine the intervals for which the cost is increasing. Determine any intervals for which the marginal cost is increasing. Marginal cost is when you derive the cost function, correct? So do you do
asked by Lindsay 
Physics Classical Mechanics
A block of mass m=2 kg is initially at rest on a horizontal surface. At time t=0, we begin pushing on it with a horizontal force that varies with time as F(t)=Beta t^2, where Beta = 1.0 N/s^2. We stop pushing at time t1, 5s [F(t)=0 for t>1]. (a) First,
asked by FHD 
math
Ines became the manager of an electronics store. She decided to provide customers with a great holiday deal. A customer will be able to purchase 3 big screen televisions at the following price, the first one at the full price of $750, the second one will
asked by the queen 
Math
Many people are trying to reduce their carbon footprint. Amrita’s carbon footprint this year was 85% of last year’s footprint. If her carbon footprint this year is 34 tonnes, what was her carbon
asked by Samiha 
Health (Ms. Sue)
1. Describe three ways that teens can take on more responsibility at home. A: Teenagers can take on more responsibility at home by cleaning after themselves, watching their younger siblings while their parents are absent, and preparing meals for not only
asked by Anonymous 
BIOLOGY
Discuss the substances needed to carry out the food making process (photosynthesis) by plants and the products of such process.
asked by Angela 
computers
The ACME Company has approached you with a request to develop the psuedocode that will control the operations of their new series of vending machines. The program will be required to maintain the product inventory and money reservoir. The program should do
asked by Anonymous 
ELA
Can you help me find a poem that is similar to "Infant Sorrow"?
asked by Lilu 
Science
For a cell of the CsCl type (figure 9.18), how is the length of one side of the cell,s, related to the sum of the radii of the ions, r subscript cation + r subscript anion? Figure 9.18 : i . imgur . com / zHj2SGW.png Another question : Consider the NaCl
asked by Joe 
Math
Cassandra is two thirds as old as Jeremy. Three years ago she was half as old as Jeremy. How old are Cassandra and Jeremy? I got this question wrong and was wondering what I did wrong. This is what I did. Now 3 years ago Cassandra C  C3 Jeremy  J  J3
asked by Ann 
math
The cost of refreshments (in dollars) is a function, h, of the number of people served, n. If h(n)=100/9n, find the number of dollars it would cost for refreshments for 27 people.
asked by Jimmy 
algebra
For a motor vehicle travelling at r miles per hour, the distance d in feet required to stop at approximately d=0.05r^2+r. If a school bus is traveling at 45mph how many feet to, the nearest foot,would it travel before coming to a halt.
asked by Kim 
math
A car dealer has 30 cars and trucks. If 2 more cars are delivered, the dealer will have 3 times as many cars as trucks. How many does trucks does the dealer presently have?
asked by April 
Probability
Suppose that you visit Shire, and find that 28% of Hobbits believe in the existence of Elves, 16% believe in the existence of Ents, and 9% believe in the existence of both Elves and Ents. You come across a Hobbit: i) What is the probability that he will
asked by Emma 
math
Ali needs to borrow Rs 500,000 for three years. Which of the following option is more beneficial for him? (i) 3.2 % simple interest rate (ii) 1.6% compound interest rate when it is compounded semi annually
asked by fatima 
math
Suppose you are managing an account in which you deposit Rs. 20,000 at the end of each year for 20 years. How much amount you have accumulated with the assumption that you earn 5% interest compounded annually.
asked by fatima 
math
1.64g of a mixture of cac03 and mgc03 was dissolved in 50ml of 0.8M hcl. The excess of acid required 16ml of 0.25M naoh for neutralization. Calculate the percentage of cac03 and mgco3. The right answer mgc03 52.02% caco 47.98% Who help for me step by step
asked by Fai 
BIOLOGY
Why are traits/scientific characteristics important in the field of science?
asked by Angela 
Science need help???
A student wishes to test the accuracy of the measuring jug she is using in an experiment. The label on the jug claims that it measures volume to an accuracy of plus or minus 5 cm3. The density of water is about 0.999 g cm−3, which means that 100 cm3 of
asked by centya 
math
A ferris wheel has diameter of 24 m and is 4 m above ground level at its lowest point. Assume that a rider enters a car from a platform that is 30^0 around the rim before the car reaches its lowest point. Model the rider's height above the ground versus
asked by Tom 
BIOLOGY
Compare the basic principles on which the Darwin’s natural selection and Lamarck’s concepts of evolution are based.
asked by Angela 
BIOLOGY
How is the evolution of animals the long necked giraffe explained by Charles Darwin?
asked by Angela 
BIOLOGY
Name and discuss the levels of organization in a multicellular organism starting from the basic unit or structure of life.
asked by Angela 
Calculus
Using the equations R(x)=x^2+400x and C(x)=x^2+40x+100, find the Maximum Revenue
asked by Lindsay 
math
how do i use atleast 8 points to make some sort of geometric figure that can be recognized by my teacher , which should be drawn only in quadrant 1 and not on an axis. a vertex matrix should be set u using this figure???????
asked by rockey 
English
Hello. I would highly appreciate some language help from a native speaker of English. Do you think the following sounds natural English: 1)the topicality of the present study is prompted by the fact that... (maybe the word "relevance" is better here?)
asked by Nalmi 
Math please help urgent
In triangle ABC, D bisects side BC, G bisects side AB, and the points E and F trisect side AC. What is the area of the shaded polygon, if the area of ABC is 108? I tryed to find the area of triangles on the side and I figured that if you put a line from
asked by Lily 
Physics
If a person lifts a 21.9 kg bucket very slowly from a well and does 8.3 kJ of work on the bucket, how deep is the well?
asked by Nicole 
American government
Political action committee contibutions typically A. are donated at the request of an elected official. B. go to incumbent candidates of both parties. C. go to the challenger to promote more competitive elections D. both A and B are correct The answer is d
asked by Anthony 
math
4x + 4 = 9x  36 my answer is 8
asked by steve 
Math
Twothirds of papaya plants availabe are hermaphrodite and are selfpollinating. Onethird of plants are female and need to be paired withh an hermaphrodite plant in order to be pollinated. Unless the plants are pollinated, they will not bear fruit. If you
asked by Angela 
Calc 2
Find the area enclosed by the equations x=16y^2 and x=y^216
asked by Eric 
econ
What has the real GDP for the US been like for the past 10 years, and what does this mean for the economic health of the nation?
asked by chhristine 
STATISTICS
Twothirds of papaya plants availabe are hermaphrodite and are selfpollinating. Onethird of plants are female and need to be paired withh an hermaphrodite plant in order to be pollinated. Unless the plants are pollinated, they will not bear fruit. If you
asked by Angela 
Physics  Please Help
A ruler stands vertically against a wall. It is given a tiny impulse at θ=0∘ such that it starts falling down under the influence of gravity. You can consider that the initial angular velocity is very small so that ω(θ=0∘)=0. The ruler has mass m=
asked by Briggs 
algebra
How would you solve this one 40x^556x^4+24x^3 divided by 8x^2
asked by Amanda 
Trig
To avoid a steep descent, an airplane flying at 10,000m starts its descent 60km away from the airport. For the angle of descent to be constant, at what angle should the plane descend?
asked by Shelley Nicole 
life science,history,6eography,and maths lit
im in grade 12 and i dn't no wht job must i take so can you plz tell me wht kind of jobs is available
asked by nkululo nqophiso 
Physics magnetism
The inductor in the circuit has a resistance of 100 ohms connected to a long solenoid with a loop density of 100 turns per centimeter and 59 H inductance connected to a 12 V battery. When the switch has been closed for a long time, what is the magnetic
asked by James 
electromagnets
A 100 gram resistive slider (thick line) moves without friction along a vertical Ushaped conducting track (thin line) that is 50 centimeters wide in a magnetic field of 5 Tesla as shown. The slider's resistance is 20 Ohms. It falls under the influence of
asked by Anton some help please 
Physics
A ruler stands vertically against a wall. It is given a tiny impulse at θ=0∘ such that it starts falling down under the influence of gravity. You can consider that the initial angular velocity is very small so that ω(θ=0∘)=0. The ruler has mass m=
asked by Geoff 
Statistics
Find the Standard Deviation for this distribution of scores. Then find the z score for X=86. N=17 98, 92, 86, 84 , 76, 74 , 72 , 72, 72 , 70, 70, 66, 60 ,54, 32,30
asked by Lyndyc 
Health (Ms. Sue)
State three changes that you have experienced during adolescence. Then, identify two ways to cope with these changes. A: ?
asked by Anonymous 
math
A typical 1hour television program devotes 10% of each hour to commercials. At this rate, how many minutes of commercials would a 3 hour program have?
asked by Matt 
Math
How many 3 digit numbers can be made using the following digits only once in each number? Use the digits : 2,3,4
asked by Pietro 
Calculus
Check my work? The equations given were R(x)=x^2+400x and C(x)=x^2+40x+100. We were asked to find the maximum profit and minimum average cost. (I'm having trouble remembering how to find a minimum and maximum, so please help with that, if you can!) For
asked by Lindsay 
Physics Classical Mechanics
Hi Enjoy, Thanks. I got the acceleration right and the Force wrong. Need help on Question 2.
asked by Mets 
Math
In triangle ABC, D bisects side BC, G bisects side AB, and the points E and F trisect side AC. What is the area of the shaded polygon, if the area of ABC is 108? I tryed to find the area of triangles on the side and I figured that if you put a line from
asked by Lily 
Math
An appliance is on sale at 30% discount. If the sale price is $42.00, what was the original price of the appliance?
asked by Leah 
fundamentals of programming
The ACME Company has approached you with a request to develop the psuedocode that will control the operations of their new series of vending machines. The program will be required to maintain the product inventory and money reservoir. The program should do
asked by rich 
Calculus
Find the maximum revenue using the following equations: R(x)=x^2 +400x and C(x)=x^2+40x+100. What I've done so far is use R(x) and solve for x, which got me 0 and 400. Is that how you're supposed to start it? What happens next? (I apologize; I'm really
asked by Lindsay 
Calculus (check my work)
Find the marginal revenue at x=10 using the equation R(x)=x^2+80x Is the answer 60?
asked by Lindsay 
criminal justice
Why do intermediate punishments have such a small role in punishment policy and practice?
asked by patiance 
math
find the area under the normal distribution curve between z = 1.25 and z = 2.20
asked by Justin 
math
find the area under the normal distribution curve to the right of z = 2.40
asked by Justin 
English
What are the similarities between Romeo and Juliet and The Machine stops
asked by Michael 
math
5h  9 = 16 + 6h
asked by steve 
math
12  q > and equal to  13
asked by steve 
Classical Mechanics Physics  Urgent help please
A ruler stands vertically against a wall. It is given a tiny impulse at θ=0∘ such that it starts falling down under the influence of gravity. You can consider that the initial angular velocity is very small so that ω(θ=0∘)=0. The ruler has mass m=
asked by Briggs 
SAT Math
I don't remember what problem I struggled to understand... But it was something like this... There are 3000 numbers so how many of them are odd.. Something like that.. Please give me a problem like that and please teach me!!!! I hope you know what I am
asked by Anonymous 
Career
Can I become both an optometrist and a pediatric optometrist or do I have to be one of them.... My question is that am I qualified for both??? Or in other words, am I eligible to do both or have the ability to do so...
asked by Anonymous 
SAT MATH
I don't remember what problem I struggled to understand... But it was something like this... There are 3000 numbers so how many of them are odd.. SometI don't remember what problem I struggled to understand... But it was something like this... There are
asked by Anonymous 
6.002x midterm
can someone help me with midterm? Q5.1 : 1 Q5.2 : Vil  Vol Q5.3 : Voh  Vih Q5.4 : Vih  Vil Q5.5 : [(Vs*2*Ron)/(VoL)]  (2*Ron) Q5.6 : [VS^2/(RON+RPULLUP)]
asked by vasw 
calculus
find the area of y=x sqrt(x^2+16), bound by the xaxis and the vertical line x=3 I got 22.5 is that correct?
asked by jeanie 
Math
Solve this substitution: 2x5x=8 3x2y=26
asked by Hanad 
Calculus
Consider the function f(x)=2x+6x^(1). For this function, there are three numbers A
asked by Skirby 
college algebra
solve the system 2x+y=4 x+y= 2
asked by drinkard 
Math
How many integers are common to the solution sets of both inequalities? x+7≥3x 3x+4≤5x
asked by purple 
us history
African American troops in the Union army: A.were from the begining an itergral part of mnay fighting units. B.distinguished themeselves in battles in Louisiana. C. None of these I read first. And I came up with B. is this right.
asked by jay 
math
What is the 43rd digit after the decimal point in the decimal representation of 1/13?
asked by Lilly 
trig
Points X, Y, and Z are on the circumference of a circle with radius 2 such that
asked by Anonymous 
math
Identify the solution(s) of the system of equations, if any. 2x+5y=10, y=2x
asked by amber 
Science
Ions are electrically charged particles that are formed when certain compounds are dissolved in water. These solutions will conduct electricity. The Swedish scientist Svante Arrhenius coined the term ion (which means wanderer) to explain why solutions of
asked by Anonymous 
Math
Identify the property 16+(13+9)= (16+13)+9 A) identity element for addition C) associative property of addition
asked by Anabelle 
physics Classical Mechanics
Enjoy, How did you find the answer to question on the yoyo I got it wrong, and question number 2 on torque. Thanks.
asked by Mets 
math
what operations are assciated with reciprocals?
asked by eggburt 
Trigonometry
find the angle theta between two vectors v=sq. root of 3/2 i+square root of 3 / 2 j and w=4 square root of 3 i +4j
asked by steve 
Calculus
How do you find maximum revenue, maximum profit, and minimum average cost? Our teacher gave us a project to teach ourselves the section, but I can't learn very well even with her teaching, so I don't know how I'm supposed to do this...
asked by Lindsay 
BIOLOGY
Why is there a need for a scientist to know the limitations of science?
asked by Angela 
BIOLOGY
Why is a control setup being done in the conduct of an experiment? Give example.
asked by Angela 
Trigonometry
Find the angle θ between the vectors v =  ((3)^1/2)/2 I +(((3)^1/2) j and W = 4(3)^1/2 i+ 4 j
asked by steve 
Math
If there's one child that can be zero interactions if there are two children the three interactions if their three children they can be 12 interactions if there are four children there can be 39 interactions which recursivity equation represents the
asked by Anonymous 
math
an adult human body has 683/5% of the number of bones it had at birth.what decimal represents this amount?
asked by udaya 
math
a tennis player won 0.805 of the matches she played.what percent of the matches did she lose?
asked by udaya