Monday
October 20, 2014

Posts by tanya


Total # Posts: 264

Physics Help Urgent
A ball is thrown straight up into the air with a velocity of 12 m/s. Draw a motion diagram for the ball and then give as much quantities information as you can about the motion. I know you guys can draw anything on this platform. But can you lead me to answer by giving ...
September 14, 2014

Organic-Chem Help
You wish to purify by distillation a material that has a boiling point of 205 C and reacts with air but this material will decompose if heated above 150 C. How would you set up the system to distill this material? Show steps Pleaseeeee!!!!!!!!!! Thank you!!!!
September 12, 2014

Life sciences
tp be protected frpm any damged environmental influences
July 31, 2014

American national government
In brown v board of education Yvette supreme court overturned purest v Ferguson because it concluded that
July 3, 2014

computers
Th e No Interest Credit Company provides zero-interest loans to customers. Design an application that gets customer account data, including an account number, customer name, and balance due. Output the account number and name, then output the customer’s projected balance ...
June 8, 2014

calculus help
I need someone to show me steps. I used wolframalpha and got 40 but dont know how to solve this Thanks!!!
May 8, 2014

calculus help
Evaluate!!!! integral -10 to 10 ((2e^x)/(sinhx+coshx))dx Thanks!
May 8, 2014

Calculus Help Please Urgent!!!
When i put this answer in it is marked wrong. Are u sure this is the right answer for this question? Thanks!
May 1, 2014

Calculus Help Please Urgent!!!
Breathing is cyclic and a full respiratory cycle from the beginning of inhalation to the end of exhalation takes about 3 s. The maximum rate of air flow into the lungs is about 0.3 L/s. This explains, in part, why the function f(t) = (3/10)sin(2πt/3) has often been used ...
May 1, 2014

CALCULUS
A plane, flying horizontally at an altitude of 1 km and a speed of 500 km/hr, passes directly over a radar station. find the rate in km/hr at which the distance from the plane to the station is changing when it is 2 km away from the radar station. Hint: this is not a max/min ...
April 24, 2014

Calculus
x = -1 to x = 2
April 23, 2014

Calculus
a) Estimate the area under the graph of f(x)=7+4x^2 from x=-1 to x=2 using three rectangles and right endpoints. R3= ???? Then improve your estimate by using six rectangles. R6= ????? Sketch the curve and the approximating rectangles for R3. Sketch the curve and the ...
April 23, 2014

CHEMISTRY HELP !!!!
NH4CL , ZNCL2 , KAL(SO4)2 FIND THE FOLLOWING NET IONIC EQUATION FOR HYDROLYSIS EXPRESSION FOR EQUILIBRIUM CONSTANT (KA OR KB) VALUE THANK YOU SO MUCH!!!
April 10, 2014

Calculus Help Please!!!
Find the equation in slope intercept form of the tangent line and the normal line to the curve x^2+4xy+y^2=13 at the point.(2,1). show steps please!!! thank you!
April 8, 2014

Calculus Help Please!!!
I've got dy/dx= x^2/y^2 but couldn't find second derivative. thanks!
April 8, 2014

Calculus Help Please!!!
If x^3 - y^3 =3 , use only implicit diff. to find d^2y/dx^2 . Express your answer in terms of x and y only and write is as a proper fraction that is completely simplified as much as possible.
April 8, 2014

Calculus Help Please!!!
Thank you so much!!!
April 4, 2014

Calculus Help Please!!!
Verify the given linear approximation at a = 0. Then determine the values of x for which the linear approximation is accurate to within 0.1. (Enter your answer using interval notation. Round your answers to three decimal places.) ln(1 + x) ≈ x Y1= I ln(1+x)-x I Y2= 0.1 ...
April 4, 2014

Calculus Help Please!!!
Find the absolute maximum and absolute minimum values of f on the given interval. f(t) = (t square root of (64 − t^2)) ,[−1,8]
April 1, 2014

math
Sorry. I think I was reading too fast and missed that. Thank you.
March 31, 2014

math
I need to convert this correct. I think that's my biggest issue. Since the diameter is in inches and the distance is in miles, wouldn't I have to convert the miles into inches?
March 31, 2014

math
Dana rode her bicycle 600 miles one summer before she had to replace the tire on her front wheel. The diameter of the front wheel is 24 inches. What is the best estimate of the number of revolutions made by the tire before it had to be replaced?
March 31, 2014

Calculus Help Please!!!
In a murder investigation, the temperature of the corpse was 32.5 C at 1:30pm and 30.3 C an hour later. Normal body temperature is 37.0 C and the temperature of the surrounding was 20.0 C. When did the murder take place? PLEASE SHOW STEP BY STEP
March 27, 2014

math
A water heater has a diameter of 18 inches. It sits in a drain pan that has a diameter of 22 inches and a height of 2 inches, as modeled in the diagram below. Water that leaks out of the water heater sits in the drain pan. Which of the following is closest to the maximum ...
March 19, 2014

Calculus Help and Check
Find dy/dx by implicit differentiation. x^5(x + y) = y^2(9x − y) this is what i've got so far but I dont think it is the right answer. y'= 9y^2-6x^5-5x^3y/x^5+9y^2-18xy
March 14, 2014

Science
Intrinsic control of heartbeat rate involves what mechanism(s)? a) The AV node initiates heartbeat although the SA node can generate a slower beat rate. b) The atrioventricular bundle initiates signals that travel to the Purkinje fibers. c) The SA node initiates heartbeat ...
February 4, 2014

Physics
Two spheres with masses of 5.00 g and 10. kg respectively are .500 m apart. calculate the force of attraction between them.
January 22, 2014

Medical Billing and Coding
Had to develop a paragraph using clear, varied sentences containing concrete words and transitions or connectives to create a logical flow. Need assistance in the following paragraph that describes on particular experience I had that inspired you or guided you to chose that ...
December 10, 2013

Math
(2-4i)-(-4+i)=
November 10, 2013

finance
can someone help me with this problem for this problem you will use 0.02/365 for your interest. You deposit $1000 at 2% for 20 years, compounded daily.
September 17, 2013

finance
You deposit $1000 at 2% for 20 years, compounded annually. What's the future value?
September 16, 2013

finance
You deposit $1000 at 2% for 20 years, compounded annually. What's the future value?
September 16, 2013

math
i am a 2 digit decimal , the sum of my digit is 12. if you divide me by a certain number the quotient is 37. who am i?
August 13, 2013

pre cal
Solve G(x) for the given domain. G(x) = 3x 2 - 2x - 1 G(6) =
June 19, 2013

Physics
Which of the following is the correct relationship between the electric field strength and the potential difference?
May 31, 2013

Algebra
Solve for x. Round to the nearest hundredth. ln(x) = -1.8 x =
May 3, 2013

math
Find the general solution of cos2x + 3 sin x =2
May 3, 2013

math
show that 1-sin x/cosx + cosx/1-sin x = 2 sec x
May 3, 2013

,math
show that sec theta(cosec theta) - cot theta = tan theta
May 3, 2013

Algebra
Write the logarithm in expanded form. log2(y^5)
May 3, 2013

Algebra
Solve for x. Round to the nearest hundredth. ln x = − 4/9 x =
May 3, 2013

Algebra
Evaluate the following function at the indicated values. H(x) = 2x (a) H(-3) = (b) H(0) = (c) H(5) =
May 2, 2013

Algebra
Given f(x)=x^2 + x + 4 and h(x)= 3x +2, evaluate the composite function. f [h(x)]
May 1, 2013

Algebra
Given h(x)= 2x + 2 and f(x)=1/2 x + 4, evaluate the composite function. h[f(x)]
May 1, 2013

Algebra
Given f(x) = 2x − 1 and g(x) = 4x − 4, evaluate the composite function. g[f(x)]
May 1, 2013

Algebra
Given f(x)=2x^2 + 9x − 7and g(x)=2x −6, find the following. (If an answer is undefined, enter UNDEFINED.) f(−2) − g(−2)
May 1, 2013

Algebra
Given f(x)= 2x^2 – 1 and g(x) = –2x + 1, find the following. f(3) − g(3)
May 1, 2013

English Composition
I know that mood and tone are different, but is mood considered an element of literature?
April 17, 2013

chemistry
how much heat is required to vaporize 343g of liquid ethanol at its boiling point?
March 25, 2013

science
In the laboratory small zircon crystals were separated from granite (K). Isotopic analysis of these zircon crystals gives a 207Pb/235U ratio of 0.45. the half-life of 235U (7.04 × 108 years), estimate the age of the granite in Ma to two significant figures
March 10, 2013

Chemistry
You are using concentrated hydrochloric acid solution (12.0 M)to make 445.0 ml of a 5.85 M solution. Calculate the number of milliliters of concentrated HCl required to make the solution.
March 7, 2013

math
Correct the right hand side of the following expressions. 5+ x = 5 + X 2 6 2 + 6 6x + 5 = x + 5 6 1 1 1 y + c = y + c
February 20, 2013

Math
Jake ate seven times more jelly beans as Sam. Together they ate 128 jelly beans. How many jelly beans did each person eat?
February 11, 2013

Finance
An investment pays 9 percent interest compounded semi-annually. What is the effective annual interest rate?
January 31, 2013

cccs
f/-11 < 9
January 14, 2013

physics
an elevator motor provides 45 W of power while lifting a 2000 kg elevator 35 m. if the elevator contains six passengers of the same mass and it takes 20.0 to accomplish this task, determine pass of each passenger.
January 12, 2013

american government
Which of the following is characteristic of a capitalist economic system? a. free enterprise b.self-reliance c.private property d.individualism e.all of the answers are correct
December 30, 2012

language arts
“In the snow” is repeated three times in “Scott’s Goodbye.” What meaning might the writer have hoped to convey by repeating this phrase?
December 17, 2012

Calculus!
A 16 ft. ladder leans against a wall, with the top being 12 ft. from the wall when time t=0. The top is sliding down at a constant rate of 4 ft./second. Given that the top of the ladder touches the ground at 3 seconds, what is the velocity of the bottom of the ladder when t=3?
November 23, 2012

MATH,statistics
At a recent scotch-tasting party, 20 faculty members and their (opposite sex) spouses were guzzling it back pretty well. One person quite correctly noticed that the women seemed to be drinking more than the men. If the mean number of drinks had by the men was 5, and that for ...
November 2, 2012

statistics
If other factors are held constant, how does increasing the number of scores in each sample affect the value of the independent measures t statistic and the likelihood of rejecting the null hypothesis?
October 21, 2012

Physics
if you were on a 22.7 degree slope and an avalanche started 425 m up the slope, how much time would you have to get out of the way, there is no friction.
October 15, 2012

physics
A box of books weighing 324 N is shoved across the floor by a force of 527 N exerted downward at an angle of 35 below the hori- zontal. The acceleration of gravity is 9.81 m/s2 . If μk between the box and the floor is 0.59, how long does it take to move the box 4.35 ...
October 15, 2012

Math,statistics
The sum of 16 reciprocals (1 over the number) is found to equal 4. What is the harmonic mean of the original (i.e., non-reciprocated) scores?
October 9, 2012

Math,statistics
The sum of 16 reciprocals (1 over the number) is found to equal 4. What is the harmonic mean of the original (i.e., non-reciprocated) scores?
October 9, 2012

Physics
On a playground slide, a child has potential energy that decreases by 1000 \rm J while her kinetic energy increases by 900 \rm J. What other form of energy is involved, and how much?
September 28, 2012

Math
The perimeter of a square is f feet. How long in yards is each side of the square?
September 26, 2012

Math
A number that can be divided by 2 three times in a row with no remainder, has 5 as a factor and is greater than 40
September 25, 2012

Psychology
Where are selfish impulses? Examples of social conscience?
September 13, 2012

physics
In the design of a supermarket, there are to be several ramps connecting different parts of the store. Customers will have to push grocery carts up the ramps. A grocery cart has a mass of 30kg. The coefficient of friction is .10. Assume that the shoppers will push the cart ...
September 11, 2012

Math
x is to 6 as 0.8 is to 1.5 How do I write a proportion with that? (proportion such as eg. 14/105=x/315) is it x/6=0.8/1.5 or is it x/0.8=6/1.5 Urgent!!
September 11, 2012

7th G-Math
a is the answer -9/-3 is 3 any negative divided by another negative is always a positive the -9+(-3) so it is -9-3 -9-3=-12
September 11, 2012

math
the value is 46 any thing in side the absolute values sign (| |) turns postive
September 10, 2012

math
y – (–19) = 25 negative and negative is positive y+19=25 now you want to get y all alone and anything flipped to the other side of the equals sign changes. so positive numbers turn negative as negative turn positive y=25-19 y=6 thats your answer!
September 10, 2012

5th grade math
0.33 is more. The less numbers a decimal has the more it is and then and the smaller the decimal, the larger.
September 4, 2012

6th grade math
13/16-1/4 you need to change 4 into 16. 4*4 is 16 so now it is 13/16-4/16 13-4=9 so it is 9/16
September 4, 2012

statistics
Breast feeding sometimes results in a temporary loss of bone mass as calcium is depleted in the mother's body to provide for milk production. An investigation gave the following data on total body bone mineral content (g) for a sample of mothers both during breast feeding...
June 28, 2012

6th Geography
Correct
May 9, 2012

Algebra
x2 - 5x + 5 = 0
April 29, 2012

statistics
The ages of commercial aircraft are normally distributed with a mean of 13.0 years and a standard deviation of 7.5 years what percentage of individual aircraft have ages greater than 15 years assume that a random sample of 49 aircraft is selected and the mean age of the sample...
April 24, 2012

math
The demand function for a certain commodity is approximated by: p = 100e-q/2where "q" is the number of units demanded at a price of "p" dollars per unit. If there is no demand for the product, what will its price be(in dollars)?
April 3, 2012

math
Find the solution of the given system by the method of addition that was used in Examples 4 and 5. If there is no solution or infinitely many solutions, state so. Put the value for x in the blank. 2x - 3y = 1; x + 2y = 4
April 3, 2012

Chemistry
Exactly 100 mL of 0.14 M nitrous acid (HNO2) are titrated with a 0.14 M NaOH solution. Calculate the pH for the following. (a) the initial solution (b) the point at which 80 mL of the base has been added (c) the equivalence point (d) the point at which 105 mL of the base has ...
March 17, 2012

Chemistry
Calculate whether or not a precipitate will form if 1.30 mL of 0.80 M NH3 are added to 2.2 L of 1.0 10-3 M FeSO4. Calculate Q.
March 16, 2012

math
solve and check each of the following quadratic equation (1)x^2+16x=36 (2)x^2=10x-16 (3)3x=x^2-4
February 16, 2012

help math
solve each of the following quadratic equation (1)x^2=5x+6 (2)x^2+9x=10
February 15, 2012

help in math
solve and check each of the following quadratic equation (1) x^2=6x (2) x^2=3x (3)x^2=17x (4) x^2=5x+6 (5) x^2+9x=10
February 15, 2012

quadratic equation
solve and check each of the following quadratic equation (1)x^-9x=0 (2)x^+8x=0 (3)x^=6x (4)x^=-3x
February 15, 2012

quadriatic equation
solve and check each of the following quadratic equation (1)x^+x-6=0 (2)x^+8x+15=0 (3)x^+2x+1=0 (4)x^-3x-4=0 (5)x^-4x-32=0
February 15, 2012

math
wats the positive root of the equation x^-3x=10?
February 15, 2012

chemistry
how many grams of hydrogen are produced if you have 120 grams of sodium? 2Na+2H2O->2NaOH+H2
February 13, 2012

Algebra 1
not enough mathematical equation to answer your question but u can solve it by using a graph.....
February 8, 2012

quadratic equation
what's the positive root of the following equation x(square)=7x+8
February 8, 2012

solving algebraic equation
a movie theater charges $9 for an adults ticket and $5.00 for a child ticket. on a recent night the sale of child's tickets was two times the sale of an adults tickets. if the total amount collected for ticket sales was not more than $3800 what is the greatest number of ...
February 8, 2012

solving algebraic equation
For college orientation week,Mike sold 200 shirts.sweat shirts were priced at $50.00 each ant t-shirts at $20.00 each Mike recieve a total of $6250.00 for the shirts. How many type of shirt dud Mike sell for college orientation week ?please help and show a equation to solve
February 8, 2012

algebraic equation and inaqualities
in a triangle XYZ,the measure of angle Y is 40 more than the measure of angle X.the measure of angle Z is 10 less than three times the measure of angle X.find the measure of angle X
February 6, 2012

algebra
the sum of two adjacent angle is 80°the larger angle is 8°less than 3 tines the smaller find the number of degrees in each angle
February 5, 2012

algebra verbal linear equation
Allison has a square root flower garden and Lauren has a rectangular flower garden the width of the rectangular garden is 2 yards less than a side of the squaare garden and the length of the rectangular garden is 5 yards more than a side of the square garden if the sum of the ...
February 5, 2012

maths
Christopher has cut three pieces of string to three kites.two pieces are equal length. rhw third pieces is one half of the lenght of each of the others. he cut out the three pieces from a roll of string 70 meters long without any String left over.Find the number of meters of ...
February 5, 2012

verbal linear equations
a taxi costs $2.75 for the first quarter of a mile and $0.85 for each subsequent quarter mile.A ride that cost $23.15 is how many miles longer than a ride that costs $17.20?(please i don't want example show me how u work it out )
February 5, 2012

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