Questions Asked on
July 12, 2013

Maths
Prove that max & min values of asinx+bcosx are =/ (a^2+b^2)^1/2
asked by Alok 
College Chemistry
Based on a Kc value of 0.140 and the data table given, what are the equilibrium concentrations of XY, X, and Y, respectively?
asked by Anonymous 
Calculus
Skeletal remains had lost 81% of the C14 they originally contained. Determine the approximate age of the bones. (Assume the half life of carbon14 is 5730 years. Round your answer to the nearest whole number.) yr
asked by Anonymous 
physics
an object weighs 10N on earth .what is the objects weight on a planet one tenth the earths mass and one half its radius?
asked by Kat 
maths
Prove that max & min values of asinx+bcosx are = +/ (a^2+b^2)^1/2
asked by mahesh 
Physics
Which of the following is correct for the reflected ray if a light ray strikes a plane mirror at an angle of 50° from the normal? a. 40° from the surface of the mirror b. 40° from the normal c. 50° from the surface of the mirror d. 90° from the normal
asked by Jordan 
Calculus
Find the absolute extrema of the function on the interval [2, 9]. (Round your answers to the nearest hundredth.) g(x)=x/(ln(x)) Absolute minimum: at x = Absolute maximum: at x =
asked by Anonymous 
Chemistry
Consider the decomposition of a metal oxide to its elements where m represents a generic metal. M2O(s)2M(s)+1/2O2(g) the delta G is 10.30 I need to find K and PressureO2 at 298K I know the equations but i keep getting the answer wrong could you please help
asked by Catherine 
physics
What is the kinetic energy of each electron in a beam of electrons if the beam produces a diffraction pattern of a crystal which is similar to that of a beam of 1.00 eV neutrons? Note: The electron mass is 9.11 × 10–31kg; and the neutron mass is 1.67 ×
asked by Lacey 
General Chemistry
A 0.484 g sample of impure NH4Br is treated with 25.00 mL of 0.2050 M NaOH & heated to drive off the NH3. The unreacted NaOH in the reaction mixture after heating required 9.95 mL of 0.0525 M H2C2O4 to neutralize. How many grams of NH4Br were in the
asked by <3 
Calculus
Four hundred students attended the dedication ceremony of a new building on a college campus. The president of the traditionally female college announced a new expansion program which included plans to make the college coeducational. The number of students
asked by Anonymous 
com
A word's denotation is its ________
asked by kayla 
College stats
Please help, I would appreciate an explanation on how you got the answer so I can understand it, being that I am so confused. The Denver Post stated that 80% of all new products introduced in grocery stores fail (are taken off the market) within 2 years. A
asked by penelope 
Calculus
Find the absolute extrema of the function. (Round your answer to three decimal places.) f(x) = xex2 on [0,2] Absolute maximum value: at x = Absolute minimum value: at x =
asked by Shan 
vocab
______ definitions are made up of the set of associations implied by a word in addition to its literal meaning a connotative b direct c denotative d none of the above i think its A
asked by tammie 
Calculus
The growth rate of Escherichia coli, a common bacterium found in the human intestine, is proportional to its size. Under ideal laboratory conditions, when this bacterium is grown in a nutrient broth medium, the number of cells in a culture doubles
asked by Anonymous 
chem ll
Calculate the pH of a buffer that is 0.250M in NaHCO3 and 0.300M in Na2CO3
asked by Anonymous 
Calculus
Find the absolute extrema of the function. (Round your answer to three decimal places.) f(x) = xe^x2 on [0,2] Absolute maximum value: at x = Absolute minimum value: at x =
asked by Anonymous 
Chemistry
Calculate the work done (in joules) by a chemical reaction if the volume increases from 3.3L to 3.5L against a constant external pressure of 3.7atm .
asked by Karina 
physic
A Ferris wheel 26.0m in diameter rotates once every 15.0s What is the ratio of a person's apparent weight to her real weight at the top?
asked by cuzer 
science
Which one of the following gases occupies the smallest volume at STP? A.4g helium B.14g nitrogen C.34g ammonia D.32g oxygen
asked by Nhlalo 
Linear Equation
A gas station sells regular gas for $2.20 per gallon and premium gas for $2.70 a gallon. At the end of a business day 220 gallons of gas were sold and receipts totaled $519. How many gallons of each type of gas were sold? I know its a linear equation. just
asked by Sara 
Physics
A 170 kg astronaut (including space suit) acquires a speed of 2.75 m/s by pushing off with his legs from a 2400 kg space capsule. What is the average change in speed in meters/second of the space capsule?
asked by Ryan 
college stats
I am having a lot of trouble with these questions can anyone help me please. 2. On September 2, 2004, a Dan Jones poll based on a random sample of 408 Salt Lake County residents reported that 26% of the respondents thought that Mayor Nancy Workman should
asked by penelope 
Physics
A tennis ball may leave the racket on a serve by a top player with a speed of 45.0 m/s. If the ball's mass is 0.063 kg, and it is in contact with the racket for 0.030 s, what is the average force (in newtons) on the ball?
asked by Zach 
Biology
Will you please check my answers? 1. Singlecelled organisms that do not have a membranebound nucleus are called A. organelles. B. prokaryotes. C. Golgi bodies. D. eukaryotes. 2. In cells, a form of active transport is A. a sodiumpotassium pump. B.
asked by Macy 
physic PLEASE I REALLY NEED HELP WITH THIS PROBLEM
The formula y=square root 64h can be used to find the velocity v in feet per second of an object that has fallen h feet. Find the velocity of an object that has fallen 25 feet. Round your answer to the nearest tenth.
asked by lisa 
physic
Planet A and planet B are in circular orbits around a distant star. Planet A is 4.5 times farther from the star than is planet B. What is the ratio of their speeds vA/vB?
asked by cuzer 
Public policy
Evaluate how public policy decisions affect the receipt of revenues
asked by Asha 
algebra1 HELP PLEASE Thanks you!!
The formula y=square root 64h can be used to find the velocity v in feet per second of an object that has fallen h feet. Find the velocity of an object that has fallen 25 feet. Round your answer to the nearest tenth.
asked by lisa 
Stats ()
Coal is carried from a mine in West Virginia to a power plant in Pittsburgh in hopper cars on a long train. The automatic hopper car loader is set to put 75 tons of coal into each car. The actual weights of coal loaded into each car are normally
asked by penelope 
statistics
MBA604 Statistics Assignment 1 Part 1 1) (5 pts) An electronics company is about to launch a new product. If the serial number for each piece produced has the following format: LLNNN where L stands for any letter in the English alphabet and N is a number
asked by austin 
Vocabulary
determine whether the definition below is denotative or connotative _____ definitions are subject to indivual interpretation A.denotative b. connotative i think its A
asked by LadyT 
algebra1 HELP PLEASE Thanks you!!
The function gives the speed in feet per second (ft/s) of a freefalling object after it has fallen x feet (ignoring air resistance). FInd the speed of the object after it has fallen 25 feet. If necessary, round your answer to the nearest tenth.
asked by lisa 
Computers C++ (2)
1.) Assume c is a char variable. What value does c hold after the following statement executes? (Type the answer without quotes.) c = toupper('a');___________ 2.) Assume c is a char variable. What value does c hold after the following statement executes?
asked by Thomas 
Vocabulary
Determine whether the definition below is denotative or connotative Gray: A cold, glommy day. A. connotative B. Denotative
asked by LadyT 
college stats
Sorry for all the questions, I really need help and an explanation so I can fully understand. I really appreciate everything. Thank you. In a random sample of 519 judges, it was found that 285 had an introvert personality type. Construct a 95% confidence
asked by penelope 
physics
Three forces act on a moving object. One force has a magnitude of 83.4 N and is directed due north. Another has a magnitude of 47.2 N and is directed due west. What must be (a) the magnitude and (b) the direction of the third force, such that the object
asked by howard 
chemistry
calculate the volume of concetrated nitric acid (68%) that is neede to prepare stock solution 0.25M in 1000mL volumetric flask.(dnitric acid=1.513g/cm3)
asked by farah 
Fundamentals of Management
1 2 3 4 5 6 7 8 9 10 A major contribution that Taylor made to the study of management was to
asked by Rhonda 
life orientation
provide 5(or more) ways in which you critically discuss how cancer impact on the teenagers
asked by nkosikhona 
physic
A satellite circles a spherical planet of unknown mass in a circular orbit of radius 1.9×107m . The magnitude of the gravitational force exerted on the satellite by the planet is 140N What would be the magnitude of the gravitational force exerted on the
asked by cuzer 
physics
A 9.90kg box is sliding across the horizontal floor of an elevator. The coefficient of kinetic friction between the box and the floor is 0.372. Determine the kinetic frictional force that acts on the box when the elevator is (a) stationary, (b)
asked by gina 
Calculus
Find the derivative of the function. g(x) = ln(3x + 5)
asked by Anonymous 
college stats
help please!!! 1. The average number of bumped passengers per day on FliRite Airlines is 2.47 with a standard deviation of 1.75. For a random sample of 40 days, what is the chance the average number of bumped passengers in the sample is between 2 and 2.75?
asked by penelope 
Geometry
ABCD is a square. If one side of the square measures 2x – 5 inches and the other side measures x + 8 inches, find x.
asked by Anonymous 
Calculus
Find the derivative of the function. g(t) = t2 ln(e2t + 9)
asked by Anonymous 
Chem
I was asked to list materials with different structures and exhibit different properties. I thought of water and salt, muriatic acid and laughing gas. Am I correct? I need two more. Please help.
asked by Kim 
calculus
two forces f1 and f2 acting on an object at a 90 degree angle will pull the object with a reluctant force, R, at an angle between f1 and f2. R= ã f1^2+f2^2 R=15 and f1=9 find f2
asked by monica 
algebra1 HELP PLEASE Thanks you!!
The function f(x)=5 square root of x gives the speed in feet per second (ft/s) of a freefalling object after it has fallen x feet (ignoring air resistance). FInd the speed of the object after it has fallen 25 feet. If necessary, round your answer to the
asked by lisa 
AP Calc.
Simplify: [(x^3)x]/[(x^2)1]
asked by Anon 
PHYSICS
An arrangement of 3 blocks A ,B,C such that block A of mass 5 kg is over block B of 6 kg, with a friction between them of 0.8. both the blocks are connected to the 3rd block C of mass m by a string and frictionless pulley. Now to find at what value of m
asked by SURAJ 
Math
Determine the simple interest P=2500 R=3 7/8 T=9 months
asked by Carie 
Math
Determine the missing value by using simple interest P= R= 2% T=90days i=$12.50
asked by Carie 
Physics(Thermodynamics)
1. The total enthalpy of 15.000kg of steam at 2250.000kPa is 34191.510kJ. Determine the dryness of the steam. ANS = % 2. Determine the quantity of heat required, to raise 11.100kg of water at 80.000 degrees Celsius, to saturated steam at 2250.000kPa and
asked by Danny 
Math
Show work to determine if the relation is even, odd, or neither. f(x) = x x^2 + 1 I thought it was even because the absolute value and squared will cancel the negatives, but I don't know how to show this through math..
asked by Anonymous 
Algebra
Determine whether the equation defines y as a function of x. y= 16
asked by tony 
Elementary mechanics
(Q1) 2 forces act on a point object as follows: 100 at 170 and 100 at 50.Find the resultant force (a)110N at 50 (b)110N at 100 (c)100N at 110 (d) 100N at 50 (Q2) given 3 vectors a=i4j+2k,b=3i+2j2k,c=2i3j+k,Calculate a(bc) (a)6(b)6(d)9(d)9 (Q3)The
asked by david 
stats college
Which of the following confidence intervals will be the widest? a. 90 percent b. 95 percent c. 80 percent d. 98 percent
asked by penelope 
Computers C++
I really need help with this one... 1.) Look at the following declaration. enum Person { BILL, JOHN, CLAIRE, BOB }; Person p; Indicate which of the following statements or expressions is valid. A.) p = BOB; B.) p++; C.) BILL > BOB D.) p = 0; E.) int x =
asked by Thomas 
Math
I am more than 300, but less than 400 . My digits add up to 12 . What number am I?
asked by Ritchell 
college algebra
if the altitude and the base of a triangle are each increased by 4 inches the area of the triangle will be increased by 42 square inches. if the altitude is increased by 3 inches and the base is decreased by 2 inches the area will be increased by 5 square
asked by quintana 
maths
The maximum temperature on Thursday was 18 degree celsius.On Friday it increased by 0.5 degree celsius. It further increased by 2.5 degree celsius on Saturday. What was the minimum temperature on Saturday ?.
asked by kaksha 
maths
The maximum temperature on Thursday was 18 degree celsius.On Friday it increased by 0.5 degree celsius. It further increased by 2.5 degree celsius on Saturday. What was the minimum temperature on Saturday ?.
asked by kaksha 
statistics
MBA604 Statistics Assignment 1 Part 1 1) (5 pts) An electronics company is about to launch a new product. If the serial number for each piece produced has the following format: LLNNN where L stands for any letter in the English alphabet and N is a number
asked by austin 
AP Calculus
[(3/x)(4/y)]/[(4/x)(3/y)]
asked by Anon 
AP Calculus
Show work to determine if the relation is even, odd, or neither. 1. 3x=y (y=abs. value of y) Simplify the following complex fractions. 2. [(3/x)(4/y)]/[(4/x)(3/y)] PLEASE HELP!
asked by Anon 
AP Calc
Solve the following absolute value inequalities: x+1
asked by Anon 
Math
Simplify the complex fraction: [(4/(x5))+(2/(x+2))]/ [((2x)/(x^23x10))+3]
asked by Sarah 
Math
Solve for x. x/(x2) + (2x)/[4(x^2)] = 5/(x+2) Please show work!
asked by April 
science
A detailed description on the environment the eagle live in:this should include the temperature,vegetation,source of water and climate changes in the habitat.
asked by kina 
Calculus
Find the derivative of the function. f(x) = ex8  6
asked by Shan 
Math
Find the domain of the following functions. 1. y= radical(x3)  radical(x+3) 2. y= [radical(2x9)] / 2x+9 3. y= radical(x^2  5x 14) 4. y= [cubed root(x6)] / [radical(x^2  x  30)] I'm terrible at finding domains.. so any help with these problems would
asked by April 
chemistry
Identify the hydroxyl groups (O−H \rm O\!\!H) by rightclicking each atom individually on the canvas and then mapping it to M1.
asked by Anonymous 
Calculus
There is this improper integral problem I've been given. I've completed most of it but still don't understand what I'd get, I don't quite get what it means to go from 'e' to 'infity'. What would I get? ln(x)+1/x from 'e' to 'infinity' + 1/x from 'e' to
asked by Isaac 
college stats
Again sorry for all the questions. please help, I am not good at stats and find these questions very difficult. I would appreciate an explanation if possible. 1.What is the sample average? 2.What is the SD of the box? 3.What is the number of draws from the
asked by penelope 
Essay
Can someone help me please I have to write a essay on if you won a million dollars and cannot spend it on yourself or family what would you do with it. I need help to start it just the opening line please
asked by Mark 
Calculus
The question is find the area of the reagion that is bounded by the curve y=arctan x, x=0, x=1, and the xaxis. So I've drawn the enclosed region. To find the area would I use the Disc/shell method? If so the formula that I came up with looks like this: If
asked by Isaac 
Calculus
Find the derivative of the function. f(x) = ex8  6
asked by Anonymous 
Calculus
Find the derivative of the function. f(x)=ln(sqrt(x)+6)
asked by Anonymous 
Calculus
Find the derivative of the function. f(x) = text(ln)(9 x^2  3 x + 1)
asked by Anonymous 
Calculus
Find the derivative of the function. f(x) = ln((x6  7)6)
asked by Anonymous 
Calculus
Find the derivative of the function. f(x) = 6 (ln(x))^(5\/2)
asked by Anonymous 
Calculus
Find the derivative of the function. f(x) = e^x8  6
asked by Anonymous 
Thermodynamics
1. The total enthalpy of 15.000kg of steam at 2250.000kPa is 34191.510kJ. Determine the dryness of the steam. ANS = % 2. Determine the quantity of heat required, to raise 11.100kg of water at 80.000 degrees Celsius, to saturated steam at 2250.000kPa and
asked by Danny 
physics
Tyler flies a spaceship at a constant velocity of 79% the speed of light or 0.790c. Use appropriate units: h for hour, m for meter. Note that β and γ have no units. (a) The value of β = [(v)/(c)] ("beta") is
asked by Anonymous 
Math
If a circle is drawn that contains all four vertices of a rectangle(24x18) and the area of the circle is k(3.14) square centimeters, what is k?
asked by Anonymous 
Computers C++
1.) Look at the following array definition. int numbers[] = { 2, 4, 6, 8, 10 }; What will the following statement display? cout
asked by Thomas 
Business Communications  English 101
Should the sentence containing the word three be 3 instead. The rules states to use numbers that follow an identifying noun. I don't quite understand if "these" is considered identifying but I believe two or three should be written in words. If I should
asked by MaryBeth 
Chem
What does it mean when they say materials with the same properties but with different chemical composition? Can you give examples so that I can fully understand?
asked by Kim