Friday
December 9, 2016

# Posts by Sandy

Total # Posts: 804

Environmental Science
I have been studying for several hours and am having problems with finding the answer to this question. Can anyone help please? Conservationists argue that watershed protection and other ecological functions of forget are more economically valuable than timber. Timber ...
April 18, 2011

math/algebra
please show me the mathimatical equation so I can set this up properly: The area of a rectangular patio is 54 sq ft. Find the length and width of the patio (Hint: A=lw)
April 14, 2011

physics
if you have an element that starts out at 40g and has a half-life of 10 days, you keep it for 30 days- how much doe you end up with? .
April 7, 2011

AP Calculus
integrate |sint(t^2)| dt with 0<t<3
April 6, 2011

math
A gun is fired from a bunker of 2m deep with an initial velocity of 500m/s at an angle of pi/6 a) Find the parametric equations of the position of the projectile b) Find the range of the projectile to the nearest meter. c) Find the maximum height of the projectile to the ...
March 17, 2011

statistics
A 99% confidence interval for population variance is being formulated based on a sample of 16 observations. What are appropriate values for X^2
March 13, 2011

if boston is 14 feet above sea level and the ice cap is 680,000 cubic miles of water what impact would boston have?
March 13, 2011

AP Calculus
An object moves along the x-axis with a velocity of v(t) = sin(pi/3)t for time t greater than or equal to 0. What is the total distance traveled by the object over the time interval 0 less than or equal to t less than or equal to 4?
March 9, 2011

Geometry
The vertices of ∆GHJ are G(-2,3), and J(1,3). If ∆KLM ≅ ∆GHJ, fing LM.
March 8, 2011

geometry
what is true about the slopes of two perpendicular lines niether of which is vertical?
March 8, 2011

geometry
If a triangle side lengths of 12 cm, 35 cm, and 37 cm, what type of angle is it?
March 8, 2011

Bio Medical Science
What are the differences and similarities of the social structure and family values of persons from Bosnia and persons from Poland?
February 26, 2011

Social Studies
What are the differences and similarities of the social structure and family values of persons from Bosnia and persons from Poland?
February 25, 2011

physical science
A student is traveling in a car with a constant velocity has a kinetic energy 1.0 x 10^4 J. What is the speedometer reading of the car in km/h.
February 20, 2011

trig
From two points each on the opposite sides of a river,the angles of elevations of the top of an 80ft. tree are 60 degree & 30 degree.the points & the tree are in the same straight line,which is perpendicular to the river.how wide is the river?
February 17, 2011

poetry
whats the meaning of the poem SOMEWHERE TO PARIS BY RICHARD BLANCO?
February 8, 2011

AP Calculus
Suppose that f(0) = 4 and f'(x)< or equal to 2 for x>0. Apply the MVT to the interval [0 , 3] to prove that f(3) < or equal to 10
February 8, 2011

AP Calculus
Determine the critical numbers for y=sq root of (x^2 - 2x -15)
February 8, 2011

AP Calculus
Locate the absolute extrema for f(x) = 3/x-1
February 8, 2011

AP Calculus
Determine whether Rolle's Theorem is valid f(x) = 3 - |x - 2| for [-1, 5] if so, find c. if not, tell why.
February 7, 2011

math
The masses of newborn children are normally distributed with a mean of 3.4 kg and a standard deviation of 0.8 kg. A newborn is at risk if the baby'd mass falls in the lowest 4%. These babies have a mass of less than ____?
January 26, 2011

math
A bag contains 3 red, 5 black and 5 blue marbles. Four marbles are selected at random without replacement: - the probability that all 4 are black? -the probability that exactly two are blue and none are red?
January 25, 2011

PHYSICS
WHAT IS MAGNITUDE OF NORMAL FORCE IN FIGURE WITH V=+3M/S +10n INSIDE BOX IS 5KG
January 19, 2011

PHYSICS
WHAT IS MAGNITUDE OF NORMAL FORCE IN FIGURE WITH V=+3M/S +10n INSIDE BOX IS 5KG
January 19, 2011

Finance
Blue Moon Corporation has one million shares of common stock outstanding. In a typical annual election for the board of directors, shareholders representing 70 percent of the shares outstanding exercise their right to vote. The company has nine members on it board of directors...
January 10, 2011

Finance
The following stock quotation were recently reported in The Wall Street Journal: 10.3 AT&T T 3.6 21 39.43 0.26 0.1 Boeing BA 1.6 31 88.91 -0.85 -8.7 JohnsJohns JNJ 2.5 16 60.26 -0.08 a. What are the dividend yields on the common stock of AT&T Boeing, and Johnson & Johnson? b. ...
January 10, 2011

Finance
Hooks Athletics, Inc., has outstanding a preferred stock with a par value of \$30 that pays a dividend of \$2.50. The preferred stock is redeemable at the option of the stockholder in 10 years at a price equal to \$30. The stock may be called for redemption by the company in 15 ...
January 10, 2011

Finance
Determine the value of a share of DuPont Series A \$4.50 cumulative preferred stock, no par, to an investor who requies a 9 percent rate of return on this security. The issue is callable at \$120 per share plus accrued dividens. However, the issue is not expected to be called at...
January 10, 2011

calculus
A particle moves along a horizontal line such that its position s(t) = (t^2e^3t/3)for time t. Find when the particle is at rest.
January 3, 2011

Finance
What factors limit the use of the fixed-asset turnover ratio in comparative analyses?
December 15, 2010

Finance
What problems may be indicated by an inventory turnover ratio that is substantially above or below the industry average?
December 15, 2010

Finance
What problems may be indicated by an average collection period that is substantially above or below the industry average?
December 15, 2010

Finance
what is the major limitation of the current ratio as a measure of a firm's liquidity? How may this limitation be overcome?
December 15, 2010

AP Calculus
If the linearization of y= cube root of x at x=64 is used to approximate cube root of 66, what is the percentage error? a) .01% b).04% c).4% d)1% e)4%
December 14, 2010

chem
For number 2 you just have to make a graph of ln(t) in your x axis and 1-T as your y-axis where the T is temperature in Kelvins. You could get a "linear" equation from the graph (y=mx+b) so you take the M and set it eqaul to (Ea)/R....and R is 8.314jouls/mole.K and ...
December 8, 2010

Sandy works at a clothing store. She makes \$8 per hour plus earns 10% commission on her sales. She worked 74 hours over the last two weeks and had a total of \$1,580 in sales before taxes.
December 7, 2010

Chemistry
what is the outer energy level for beryllium?
November 30, 2010

Chemistry
how does the outer energy level relate to the ionization energy?
November 30, 2010

Chemistry
How does the outer energy level(period)relate to the atomic radius?
November 30, 2010

math
Sorry guys, new to this and just realized i posted in the wrong place :(
November 12, 2010

math
My son is doing expanded algorithm and the problem is 23 x17 the problem is there are cubes underneath the problem for him to fill in but ive tried every way I can think of to solve this problem and the answer just doesnt fit into these cubes, any suggestion?
November 12, 2010

15 is the answer and I have a question "if a is not equal to 0, find the intercepts of the graph of y=ax+b in terms of a and b?"
November 4, 2010

Science :)
A football is kicked from the ground at 27 m/s at an angle of 42 degrees above the horizontal (ground). No one gets in the way until after it hits the ground. Use the value g=9.8 m/s^2. Assuming that the ground is level and that there is negligible air resistance, wind, etc. a...
October 28, 2010

Physics
A football is kicked from the ground at 27 m/s at an angle of 42 degrees above the horizontal (ground). No one gets in the way until after it hits the ground. Use the value g=9.8 m/s^2. Assuming that the ground is level and that there is negligible air resistance, wind, etc. a...
October 27, 2010

Physics
A football is kicked from the ground at 27 m/s at an angle of 42 degrees above the horizontal (ground). No one gets in the way until after it hits the ground. Use the value g=9.8 m/s^2. Assuming that the ground is level and that there is negligible air resistance, wind, etc. a...
October 27, 2010

physics
4. An ice skater pulls three small children, one behind the other, with masses 25kg, 31 kg and 35kg. Assume that the ice is smooth enough to be considered frictionless, determine: a) the total force applied to the train of children if they reach a speed of 3.5m/s from rest in ...
October 24, 2010

calculus
Evaluate the limit lim sin4x/tan9x x-> 0
October 21, 2010

calculus
Let f(x)=4cos^5x. Find f'(x)
October 21, 2010

calculus
If f(x)=(x^2+3x+2)^3, find f'(x).
October 21, 2010

calculas
the answer is not correct. I input f'= 1/2 (7t^-5)^-1/2 * (-5*7t^-6)and its incorrect. Did I input the wrong answer?
October 21, 2010

calculas
If f(t) = square root of 7/t^5. Find f'(x) and f'(2)
October 21, 2010

calculas
i did however my answer is still wrong. can you show me step by step. this way i can see what i am doing wrong. thank you
October 21, 2010

calculas
If a ball is thrown vertically upward from the roof of 48 foot building with a velocity of 80 ft/sec, its height after t seconds is s(t)=48+80t–16t2. What is the maximum height the ball reaches? (my answer is 148). What is the velocity of the ball when it hits the ground...
October 21, 2010

math
thank you
October 21, 2010

algebra
33x+38x=284 71x=284 71x/71=284/71 x=284/71 x=4
October 17, 2010

Finance
Your best taxable investment opportunity has an EAR of 4%. You best tax free investment opportunity has an EAR of 3%. If your tax rate is 30%, which opportunity provides the higher after tax interest rate?
October 13, 2010

MEDICAL BILLING/CODING
DO ANYONE HAVE THE LAYOUT FOR INTERPERSONAL COMMUNICATION GRADED PROJECT I AM STUCK NEED IDEAS
October 9, 2010

Social Studies
1-a,2-d,3-b,4-c,5-e
October 7, 2010

english
Please correct the following sentence for a daily oral language question: we will see a play called cinderella on tuesday I do not agree with how it was graded.
October 5, 2010

chem
Determine whether a solid forms when solution containing the following salts are mixed. If so, write the ionic equation and the net ionic equation. a) NA3PO4 and AgNO3 B) K2SO4 and K2S c) Pb(NO3)2 and Na2CO3 D) BaCl2 and KOH Share: by email on facebook on twitter
October 3, 2010

Physics
Two rocks are thrown off the edge of a cliff that is 15.0 m above the ground. The first rock is thrown upward, at a velocity of +12.0 m/s. The second is thrown downward, at a velocity of −12.0 m/s. Ignore air resistance. Determine (a) how long it takes the first rock to ...
September 12, 2010

algebra2
How to put this in a quadratic equation ax squared + bx + c = 0
September 8, 2010

Calculus
The population of fish in a lake before mating season is F. During the mating season, the population grows by 30% and the new population is N. Write an expression for N is terms of F.
September 7, 2010

algebra
2x-5(X+3)> -20
August 25, 2010

algebra
2x-5(x=3)>-20
August 25, 2010

Biology
When the electron moves back to lower energy levels in an electron transport chain, energy is a) stored or b) released c)converted to matter d)used to make O2 I'm not sure how to answer this cause isn't it stored as potential energy of H20 and just before the electron ...
August 11, 2010

chemistry
Compare the chemical composition of methane and ethanol to carbon dioxide. Which one can be said to be the complete oxidation of glucose? I thought is was methane but I got it wrong can you explain please.
August 4, 2010

psychology
Sexually active undergraduate women who do not consistently use contraceptives see themselves as less vulnerable to unwanted pregnancy than do other undergraduate women.This best illustrates A: the tyranny of choice B: emotion-focused coping C: the Type A personality D; ...
July 25, 2010

psychology
Watching the news on TV Mr.Velazco sees pictures of starving children in Africa.That morning he had read about the problem of world hunger.The TV images had a greater impact on him because of: A: belief perserverance B: emotional intelligence C:confirmation bias D: the ...
July 25, 2010

math
solve for unknown: log9 r=3/2 logG 2=1/3 Can you show me the steps how to solve this problems.Thank yo very much for your time
July 18, 2010

math 116 appendix e
4. The line y=0.15x +0.79 represents an estimate of the average cost of gasoline each year. The line 0.11x-y=0.85 estimates the price of gasoline in January of each year (“Consumer price index,” 2006). a. Do you expect the lines to be intersecting, parallel, or ...
July 15, 2010

math116 appendix e
4. The line represents an estimate of the average cost of gasoline each year. The line estimates the price of gasoline in January of each year (“Consumer price index,” 2006). a. Do you expect the lines to be intersecting, parallel, or perpendicular? Explain your ...
July 15, 2010

algebra
b. You will use 25% of your budget of 118,250.00 to rent business space and pay for utilities. Write an algebraic expression that indicates how much money will be spent on business space and utilities
July 11, 2010

There is no question that Ruthâ€™s actions breached the duty of reasonable care necessary to park a car on the hill. Furthermore, there is little doubt that Jim has been injured by a roof falling on him and not through his own negligence. Therefore, Jimâ...
July 6, 2010

trig
okay i think that is right. thank you
June 6, 2010

trig
no, its not squared. it is (cosx)(2)
June 6, 2010

trig
solve for x if x is in radians. cos2(x) + 4cos(x) = -3
June 6, 2010

trig
find the exact value by using the appropriate half-angle identity: sin(5pi/12)
June 6, 2010

algebra
*verify that it is an identity
June 6, 2010

algebra
sin(270 degrees - theta) = -cos(theta)
June 6, 2010

Physics
In both cases an applied force of 100N accelerates block A which weighs 100N. In which case is this acceleration greater?
June 6, 2010

algebra
make up situation that can be described in algebra with each expression for 5x, and for x-10, and also 2x+3
May 19, 2010

algebra
a. p(4000-p) b. 40000-10=39,990 c. 10(39990)=399,900
April 26, 2010

geometry
a pie shaped property is 650.00'X488.00'X405.00', what is the amount of acreage? thanks for the help.
April 19, 2010

Pre Algebra
Write an equation to find the value of X if the perimeter of a triangle =36. AC=x-2, BC=x, AB is unknown.
April 19, 2010

math
Sorry I know this was 5 years ago, but did you by any chance gets the answer? I have this question right now
April 15, 2010

math
Imagine a small chess board, 3 x 3. If you place a knight on the top left hand corner, how many different squares can the knight reach in less than 4 moves?
April 8, 2010

programming
I am in IT/210 and am having problems with the entire class. But what I am stuck on is as follows: Consider the following statement where X is an integer test score between 0 and 100. input X if (<0=X and X<49) output = "you fail" else if (50 <=X and X < ...
April 7, 2010

Biology Research Paper--Urgent
Parenthetical Documentation In the MLA format, "parenthetical documentation" is used to briefly identify the sources of information you have borrowed in writing your paper. Parenthetical documentation should be integrated smoothly into the text of your paper, rather ...
April 7, 2010

College English
I'm stuck. What kind of fallacy is: The officer said the driver had been clocked at 70 miles an hour, but the driver retorted, "You were going just as fast as I was; if I'm guilty, so are you."
April 7, 2010

College English
I need help with undersatnding fallies. Example of a sentence to list fallicies: You're either a critical thinker or you're not.
April 6, 2010

math
A recent poll of 500 randomly chosen voters concludes that 60% of the voters prefer this canidate. Determine the probability that the candidate will get less than 56% of the votes. How do I do this type of question? i have a few to figure out.
April 4, 2010

physics
There is no difference in the period because it the period is not dependent on mass or amplitude. (I just had this same problem on webassign)
March 31, 2010

staticitics
First 7"s = 1 The second 7's = 5.75
March 30, 2010

math 3Probability
Could you please explain how to do this question. Suppose that a certain candidate is running in a city election. A recent poll of 500 randomly chosen voters concludes that 60% of the voters prefer this candidate. Determine the probability that the candidate will get less than...
March 29, 2010

Probability
Could you please explain how to do this question. Suppose that a certain candidate is running in a city election. A recent poll of 500 randomly chosen voters concludes that 60% of the voters prefer this candidate. Determine the probability that the candidate will get less than...
March 28, 2010

Math 30
A popular game show begins with the host reading a question to the contestants. One question involves putting 4 events (A, B, C, and D) in chronological order. What is the probability that the contestant gets the question correct is he or she just guesses? Recently I asked ...
March 25, 2010

Probability
A popular game show begins with the host reading a question to the contestants. One question involves putting four events (A, B, C and D) in chronological order. What is the probability that the contestant gets the question correct if he or she just guesses?
March 24, 2010

math
5m-11 5m=11 m=11/5 2m + 3 2m=-3 m=-3/2
March 23, 2010

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