Questions Asked on
July 4, 2013

trig
Find all solutions in the interval [0,2pi]. sin 2x + sin x = 0
asked by Trig 
math 3
Solve the following system using the elimination method: 10x  6y = 16 5x + 2y = 22
asked by hunter 
Chemistry
I am having trouble getting the Net ionic equation for: 1)MgSO4 + Na3PO4= 2)Na2CO3 + ZnCl2= 3)Na2CO3 + Na3PO4= 4) Na3PO4 +ZnCl2=
asked by Chris 
math
The markup on a restaurant mean is 250%. A meal costs $7.25 to produce. How much will the customer be charged, after markup and 5% GST are applied?
asked by alyssa 
Montessori
What is the greatest number that will produce 1220 when rounded off to the nearest tens?
asked by Blue 
phy
An engine absorbs 2000j of heat from a hot reservoir and expels 750j to a cold reservoir during each poerating cycle, (i)what is the efficiency of the engine (ii)How much work is done during the cycle? (iii)What is the power output of the engine if each
asked by kate 
COM200
Is interpersonal communication, when two people are talking face to face, the channel is the air around them that carries the message? True or False. I believe the answer is true.
asked by Anonymous 
Physics
Jim is 100m(S) of Paul. Paul begins to walk east at 2.0m/s the same time Jim begins to walk west at 3.0m/s. what is the displacement of Jim from Paul 20 seconds later? Please explain steps Answer is 141(SW)
asked by jacob 
physics
A boat sails 5.0(45 degrees W of N). It then hanges direction and sails 7.0km(45 degrees S of E) where does the boat end up with reference to its starting point.? Please explain steps answer is 2km(45 degrees S of E)
asked by gary 
calculus
The demand for your handmade skateboards, in weekly sales, is q=5p+600 if the selling price is $p. You are prepared to supply q=5p400 per week at the price $p. What price should you sell your skateboards for so that there is neither a shortage nor a
asked by jimmy 
english
how i celebrate my birthday?
asked by vidya 
statistics
The makers of the MAGNETIZER Engine Energizer System (EES) claim that it improves gas mileage and reduces emissions in automobiles by using magnetic free energy to increase the amount of oxygen in the fuel for greater combustion efficiency. Following are
asked by Katie 
physics
In the following figure m_1 = 20.0kg kg and á alpha = 50.9 ∘ ^\circ. The coefficient of kinetic friction between the block and the incline is ì k = 0.40 What must be the mass m 2 of the hanging block if it is to descend 9.00m m in the first 3.00s s
asked by Bob 
Eth/125
10.Chavez’s labor union efforts have had the lasting effect of a.improved working conditions for agricultural workers. b.increased awareness of the plight of migrant workers. c.migrant workers developing a sense of solidarity. d.all of these
asked by beckylynn 
algebra1 Help pleASE
A gardener wants to create a rectangular vegetable garden in a backyard. She wants to have a total area of 13 square feet, and it should be 12 feet longer than it is wide. What dimensions should she use for the vegetable garden? width = feet length = feet
asked by lisa 
Physics (Thermodynamics)
27.300kg of Copper at 35.000 degrees Celsius receives 460.000kJ of heat. Calculate the final temperature of the metal. ANS = degrees Celsius Copper specific heat = 0.39kJ/kg degrees Celsius. Q = mc (t2  t1) Q = 460.000kJ m = 27.300kg c = 0.39kJ/kg t1 = 35
asked by Danny 
physics
A student runs through a field 100m(E) then 200m(S) and finally 50(45 degrees S of E find his final position relative to his starting point? please explain steps Answer is 272(60 degrees S of E)
asked by jacob 
math
Solve the following system using the elimination method: 3x + 4y = 6 9x  12y = 18
asked by hunter 
statistics
population with a mean of 110 and a standard deviation of 6, what is the likelihood of a score of 100 or lower
asked by carole 
Math
what property is being shown in ab+ bc=24 and AB =10, then 10+BC=24 symmetric addition subtraction substitution
asked by Chase 
Trig
Multiply and Simplify. ( 1 + cot θ )^2
asked by Trig 
Math
what property is being shown in ab+ bc=24 and AB =10, then 10+BC=24 symmetric addition subtraction substitution
asked by Chase 
French
How do I say "is she your sister?" in French?
asked by Anonymous 
SCIENCE,PHYSICS
A truck of mass 3000 kg is harnessed to a trailer (Trailer A) of mass 1000 kg. The trailer is hooked to ANOTHER trailer (Trailer B) of mass 500 kg. The truck begins to accelerate to the right at 1 m/s2, pulling the trailers along. What is the ratio of the
asked by GT 
qualitative chemistry
calculate the percent w/v, mole fraction of components, molarity and normality of the solution containing 13 g nahso4 dissolved in water upto total volume of 250 ml
asked by maggie valle 
Math
what is f(x)=x^39x^2+15x+2 function max and how to do that if u could explain
asked by Lamblia 
contemporary math
To determine the compound amount of an investment of $10,000 with an interest rate of 6% compounded monthly after 4 years requires you to use a table factor that goes beyond the Compound Interest Table. Calculate the new table factor for this investment.
asked by Trish 
contemporary math
Quinn and Julius inherited $50,000 each from their greatgrandmother’s estate. Quinn invested her money in a 5year CD paying 1.6% interest compounded semiannually. Julius deposited his money in a money market account paying 1.05% compounded monthly. How
asked by Trish 
contemporary math
Bob and Joy Salkind want to save $50,000 in 5 ½ years for home improvement projects. If the Bank of Aventura is paying 8% interest compounded quarterly, how much must the couple deposit now to have the money for the projects?
asked by Trish 
contemporary math
You are the owner of a JaniKing cleaning service franchise. Your accountant has determined that your business will need $27,500 in new equipment in 3 years. If your bank is paying 6% interest compounded monthly, how much must you invest today to meet this
asked by Trish 
contemporary math
Compute the amount of compound interest earned in 1 year for an investment of $1,000,000 with a nominal interest rate of 8% compounded quarterly. Then Compute the Annual Percentage Yield (APY) for the investment in the previous question. (Round APY to the
asked by Trish 
Science
If you lost some metal while transferring it from the balance to the evaporating dish, how would your empirical formula be affected?
asked by Lela 
Europe
What is unique about the geography of Spain compared to other European countries?
asked by Susan 
math 2
Solve the following system using the elimination method: 6x + 2y = 5 12x  4y = 20
asked by hunter 
Statistics
The distribution of heights of adult American men is approximately normal with a mean of 68 inches and a standard deviation of 2 inches. What percent of mean are at least 72 inches tall?
asked by Anonymous 
Eth/125
1.What primary objection did Americans have to permitting the arrival of the boat people? a. concerns over increased unemployment b. the Communist background of the refugees c. the large numbers of orphaned children arriving d. all of these
asked by beckylynn 
statistics
1. Are there more broken bones in summer or winter? We get records about the number of fractures treated in January and July at a random sample of 25 emergency rooms. The 95% confidence interval for the mean change ( μd = μJan  μJuly )in the numbers of
asked by Katie 
trig
Find all real numbers in the interval [0,2pi) that satisfy the equation. cos^2 x+2 cos x+1 = 0
asked by Trig 
algebra
how do you Solve the following system using the elimination method: 2x  4y = 2 4x + 6y = 4
asked by terrie 
Math
A simply supported beam is 6 meters long and has a mass of 15 kg/m of length. It carries loads = 180 N and 270 N at points 1.2 meters and 3.6 meters from the left end respectively. Find the reactions.
asked by Todd 
104 HIS Civilization
I need a help response to classmate about posting
asked by Anonymous 
social studies
Which country arrived at the South Pole, the center of Antarctica?
asked by fvv 
help please
Cosmetic surgery is more likely to lead to disappointment if a person is ________. A. Seeking surgery with the hope of influencing a change in oneself B. Seeking surgery with the hope of influencing a change in someone else C. Seeking surgery with the hope
asked by barbara 
socials 11
Why did entering no mans land come to mean almost certain death?
asked by alyssa 
socials 11
what would happen if troops managed to capture the enemy's front line?
asked by alyssa 
Eth/125
A range of negative feelings toward Muslims and their religion that ranges from generalized intolerance to hatred is a. Arabaphobia. b. racial profiling. c. Islamophobia. d. Muslimaphobia I think the answer is A
asked by beckylynn 
socials 11
although the German troops met with success against the invading Russian troops, in what way did these battles hurt the Germans?
asked by alyssa 
Thermodynamics
Calculate the amount of expansion occurring when a steel rail 920.000 meters in length is heated from 10.000 to 410.000 degrees Celsius. ANS = m Steel = 12 * 10 ^6 = 0.000012 Change in length = Original length * Coefficient of linear expansion *
asked by Danny 
Computers
Can someone please tell me what I'm doing wrong? #include #include using namespace std; int main() { //.... //Constants for adult and child ticket costs const double cost_per_child_tix = 3; const double cost_per_adult_tix = 6; //Variables double adult,
asked by Thomas 
Math Calculus
f(x) = (x^3+5x^228x32)/(x^318x^2+105x196) which can be written as f(x) = [(x+1)(x4)(x+8)]/[(x7)^2(x4) The domain of the function f(x), in interval notation from left to right, is ____ U ____ U ______. The root(s) of f(x), in increasing order,
asked by Maude 
Spain
Who were the Visigoths and what was their most important contribution to Spanish culture?
asked by Susan 
Physics
Mary walks west at 2.0m/s for 15 seconds, then north at 3.0m/s for 2o seconds and then east at 4.0m/s for 0 seconds. What is her displacement answer is (108m(N56 DEgrees E)
asked by Ivan 
spanish
¿Qué comerás esta noche, Pepe? Comerá pizza. Comere un sandwich. Comerás espagetis. Comeré lo que prepara mamá.
asked by Anonymous 
philosophy
Argument Evaluation # 1 – Is morality universal? Instructions: In your own words, identify the argument or arguments in the following passage. Be certain to clearly identify the premise(s) and the conclusion for any argument. Indicate whether the
asked by christine