Questions Asked on
July 15, 2015

science,
A force of 4400 N is exerted on a piston that has an area of 0.020 m2. What force is exerted on a second piston that has an area of 0.040 m2?
asked by cristopher 
math
The standard deviation of a sample taken from population A is 17.6 for a sample of 25. The standard deviation of a sample taken from population B is 21.2 for a sample of 30. The standard deviation of the sample mean differences is_____. (Round your answer
asked by j 
math
The angle of depression of a boat from the midpoint of a vertical cliff is 35 degree.if the boat is 120m from the foot of the cliff,calculate the height of the cliff.help me confirm my answer. Tan35=x/120 x=120tan35 =84.02m
asked by Bayo 
Math
Kate wants to build a fence around her garden to prevent rabbits from eating her vegetables. The rabbit fencing costs $7.50 per metre. How much will it cost to enclose a square garden with an area of 144 m2?
asked by Astrid 
Math
The treadmill is set at its maximum slope of 0.20. The run is 80 inches. What is the rise?
asked by Amanda 
Algebra 2
Evaluate 20(0.5)^(n1) when n= 3 to 12. Use sigma notation .
asked by Anonymous 
Psychology
1)The Peabody Picture Vocabulary TestRevised is used to Select one: a. determine a child’s reading level b. determine a deaf child’s understanding of words c. identify people with communication difficulties d. identify children who should skip a grade
asked by Anonymous 
college chemistry
A 9.60 mL sample of 12.0 M HCl is used to prepare 125 mL of diluted acid. A sample of 32.4 mL of Ba(OH)2 base is exactly neutralized by 24.0 mL of dilute acid. What is the concentration of the Ba(OH)2 base? Help. I don;t know where to start.
asked by sara 
Physics
The force F sub x acting on a particle is shown as a function of X. If an object starts at the origin (of a graph) moving to the right with a kinetic energy of 45.5 J, how much kinetic energy does it have at x = 3.0 m ? I have no clue how to do about
asked by Anonymous 
algebra
A country's population in 1995 was 175 million. In 2000 it was 181 million. Estimate the population in 2020 using the exponential growth formula. Round you answer to the nearest million. P=Ae^kt
asked by bob 
English
In his literary work, A Long Way Gone: Memoirs of a Boy Soldier, Ishamael Beah uses symbols to underscore his central theme of oppression and/or freedom. for this thesis statement, the three symbols I wana use are Cassettes, moon, and AK47 gun. Are these
asked by Natasha 
Economics
Analyze the factors that affect the demand of a washing machine detergant
asked by Soorya 
Physics
What is the angle between the vectors A and B if vector A multiplied by vector B = 0.5 AB
asked by Sarah 
Math
The coordinates of the top of a hill are (2, 14). The coordinates of the bottom of the hill are (10, 2). Given this information, what is the slope of the hill?
asked by Amanda 
Snethezekile High School
Maths lit,History,Economics,Business Studies,Tourism Which careers must a person focuss on when doing these subjects?
asked by Philile Nhleko 
economics
3. Suppose that the total monthly demand for golf services is given by Q = 20 – P The marginal cost to the firm of each golfer is $1. If this demand function is based on the individual demands of 10 golfers, what is the optimal two part pricing strategy
asked by Anonymous 
math
express the repeating decimal 10.232323 as a ratio of two integers
asked by jen 
Lemoyne Owen College
Math If the gas is initially at room temperature (20celsius)and is heated in an isobaric (constant pressure) processing then what will be the temperature of gas in degree Celsius when it has expanded to a volume of 0.700 m to the third power
asked by Kimberly 
Psychology
Which of the following factors will not affect how a person does on an IQ test? Select one: a. How much sleep he/she had the night before b. None of the above c. What kind of mood that person is in d. Whether that person had anything to eat that day I am
asked by Anonymous 
chemistry
how much volume of oxygen at stp in litres is required to burn 4g of methane gas completely
asked by sweety 
math
Ahmad is choosing a password to access his teacher’s web page. He must choose a capital letter and three nonrepeating digits from 0 through 9. The letter can be in any position in the password. Which shows part of the sample space for Ahmad’s password?
asked by bla 
english
Beginning writers tend to overuse _______, which quickly become monotonous A. long sentences B. complicated sentences C. short, simple sentences D. complex sentences
asked by sheneka 
Calculus
My question is finding the derivitive of y=((x+λ)^4)/(x^4+λ^4). I distributed the exponent in the numerator, but I don't know if that's right. Rewritten as y=(x^4+λ^4)/(x^4+λ^4). I found the derivitive and multiplied accordingly, as
asked by Jessica 
health and legal
A surgeon performs elective surgery on Patrick John Smith. Smith later complains to his surgeon about pain resulting from the surgery. His surgeon dismisses his complaints as not credible and eventually withdraws from the case. Smith is then treated by
asked by latasha 
White Collar Crime
How can I apply the definition of white collar crime to consumer fraud, religion crime, and corporate fraud. I'm having a hard time trying to connect white collar crime to the three categories. I understand the definition clearly, just stuck on how to
asked by Sabxo 
Stanger Secondary exschool
What subjects do u really need to do for art such as Drawing and Poetry...#"compulsory subjects" for these arts. Is it: Physics,pure math,geog,life sciences,mech tech,EGD,mah.lit,BS,history,economics,...which ones are needed??? Ain't u shuld be smart in
asked by Philile Teddy Nhleko 
: math
Clayton has 3 quarters, 7 onedollar bills, 9 dimes, 9 nickels, and 3 pennies. How much money does he have?
asked by lana 
biology
Activates conversion of pepsinogen to pepsin. What is the component? What is the secretion?
asked by Anonymous 
Biology
Breaks down proteins into polypeptides and amino acids What is the component?
asked by Anonymous 
Biology
1) The nose has small __________. 2) Hairs in the nose trap __________. 3) The nose makes a sticky liquid called __________.
asked by A 
Biology
1) Mucus traps __________. 2) The windpipe is lined with sticky __________ and microscopic __________. 3) Tiny microscopic __________ are called cilia.
asked by Ben 
Biology
1) Microscopic hairs of the windpipe are always __________. 2) The cilia of the windpipe move harmful substances __________. 3) You build a heavy gust of air when you __________ or __________. 4) Coughing and sneezing help push harmful substances from the
asked by Anna 
Math
The graph of a linear relation goes through the point (6, 4) and is parallel to the line y = 5x + 10. Write the equation of the linear relation in slope intercept form.
asked by Kelly Brians 
chemistry
How many grams of sucrose are in 1.5kg of a 10.5% (by mass) solution of sucrose?
asked by vicki 
Intermediate algebra
A collection of nickels dimes and quarters consists of 50 coins with a total of $5.50. If there are two times as many dimes as quarters find the number of each type of coins?
asked by Hope 
Rabindra sahu
What is physics?
asked by Rabindra sahu 
geology
True or False: Sand dunes are one of the most stable features on the Earth's surface.
asked by michael 
physics
What is the variable and unit for centripetal force and centripetal acceleration?
asked by M 
Physical Science
A hot iron ball is dropped into 200.0 g of cooler water. The water temperature increases by +2.0°C and the temperature of the ball decreases by 18.6°C. What is the mass of the iron ball?
asked by elise 
physics
Calculate the work done if a force of 300N Is applied at 30° to the horinzontal and body moves 20m
asked by tina loko 
english
can someone please check one of my paragraphs for my essay and then delete the post
asked by aha 
Geology
True or False: Longshore drift is the movement of sediment sideways down the shoreline.
asked by jj 
literacy
Please someone can tell me if my answer is correct. Does the U.S. Senate choose the Supreme Court justices? yes or no. My answer is (no).
asked by ezekiel 
Algebra
Solve for x: X1/7=2x2/3x1
asked by Daniela 
Physics
A mineshaft has an elevator hung from a single steelwire cable of diameter 2.5 cm. Young's modulus of the cable is 10×1010N/m2. When the cable is fully extended, the end of the cable is 500 m below the support. How much does the fully extended cable
asked by Tommy 
English
Question: In lesson plan, we can see two items; one is 'Registration Number' and the other is 'Identity Number.' What is the difference between them.  Two or three applcants for teaching at school will come and start teaching for demonstration for about
asked by rfvv 
Math
Jai has 35 pieces of fruit. They are all apples and pears. He has 15 more apples than pears. How many pears does he have?
asked by Lizzie 
Math
You need to hire a parttime associate to work 30 hours a week in your store. You have $250 in labor budget for the new associate each week. You just interviewed an excellent candidate for the position who has requested to be paid $9.00 per hour. Your
asked by Anonymous 
physics
A stone is dropped from a cliff 100 ft. high. Disregarding friction; a. how long does it take the stone to hit the ground? b. With what speed and direction does it strike the ground?
asked by happy 
physics
A marble is thrown vertically downward at an initial velocity 200cm/!@#$%^&s the floor in 2.5 seconds ,At what height is the marble thrown?
asked by happy 
physics
a stone is dropped from a cliff 100 ft high .disregarding friction; a.how long does it take the stone to hit the ground b.With what speed and direction does it strike the ground?
asked by happy 
Math
a woman drives to work and averages 70 kilometers per hour for the trip. On her trip from work to home she averages 100 kilometers per hour. What is her average speed for the round trip?
asked by Justin 
science
Some say that the hot air balloons with which the Montgolfier brothers performed their first flight had a volume of 1700 cubic metres and could lift 780 kilograms (that includes the balloon, basket and payload). Assume that the balloon took off on a day
asked by sakthi 
Math
The formula Total cost = Cost + Shipping cost + Holding cost is used to find the total cost of a business asset. The formula can be written in symbols as T=C+S+H. Solve the formula for C, the cost of the asset.
asked by Doug 
Calculus Partial Derivatives
Verify that the sum of three quantities x, y, and z, whose product is a constant k, is maximum when these three quantities are equal.
asked by Anonymous 
Chemistry
a) Determine how many molesof I3 are produced by 1 mole of Cu(IO3)2. b)Determine the stoichiometric ratio between iodate and thiosulfate. c)Determine the molar solubity expression for Cu(IO3)2 For C) I got ksp=[Cu2+][IO3]^2 Is this correct?
asked by Please Help 
Math
Suppose Paul kicks a soccer ball straight up into the air with an initial velocity of 96 feet per second. The function f(x) = 16t2 + 96t gives the height, in feet, of the soccer ball after t seconds What are the zeros? Write the number(s) only. If more
asked by Aliy 
chemistry
Why can't lead chloride be directly prepared by adding hydrochloric acid?
asked by jacky 
math
A trapezium ABCD is such that AB//CD and the perpendicular from A to CD is 40cm.if AB=20cm,DA=50cm and CD=60cm.calculate the (i)area of the trapezium (ii)
asked by james007 
nonforprofit
(Accounting standardssetting bodies) Three accountants started talking about hospitals. One said he was treated at a notforprofit hospital, another said she was treated at a county hospital, and the third said he had just returned from the hospital run
asked by Angie 
algebra
solve x^4+px^3+qx^2+rx+s=o
asked by yamuna 
Calculus
So, I have a homework question on The Quotient Rule (taking derivitives) and I would like to know if I did it right. Calculate: y=(1/sqrt(x))(1/(5th root of x^3). My 1st step was to change the sqrt to x^1/2, and the 5th root to x^1/5+^3. So then I got
asked by Jessica 
Math
What price do we charge a patient if the AWP for 300 tablets is $14.55 and we want to give the patient 30 tablets plus a 6% markup and a $3.00 dispensing fee?
asked by Anonymous 
Chemistry
If 32.6 mL of 0.240 M oxalic acid are required to titrate 48.9 mL of unknown sodium hydroxide: How many moles of acid are used in the titration? How many moles of base are used in the titration? What is the molarity of the unknown NaOh base? Please help I
asked by sarah 
South bank uni
How many points of inflexion dose the function y= x^4 have
asked by Abdul 
Chemistry
A sodium hydroxide sample is contaminated with sodium chloride. A 0.240 gram sample of this impure sample is dissolved in water and titrated with 21.50 mL of 0.130 M H2C2O4. Calculate the percent sadium hydroxide in the impure sample [(mass of NaOH in
asked by Sam 
french
SraJMcGin, Im not sure what my instructions for my work means or what i am supposed to do. Donnez des ordres aux gens pour completer une tache (Come up with an imaginary task) en utilisant l'infinitif en forme de l'imperatif (VERBE QUI TERMINE EN ER, IR
asked by Rose 
Ecology
I am having trouble with the global patterns of atmospheric heating and circulation. I don't completely understand.
asked by Tina 
Math
If 3 pounds of apples costs .99 how much does 2 pounds costs?
asked by Anonymous 
white collar crime
I need help defining and describing edwin sutherlands distinct elements of white collar crime. All I have so far is that the two elements are the social status of the offender And the occupational mechanism by which the offense is committed. Im having a
asked by Sabxo