Sunday
April 20, 2014

Posts by Sandy


Total # Posts: 611

Math(Probability)
Let X and Y equal the outcomes when two fair six-sided dice are rolled. Let W = X + Y. Assuming independence, find the p.m.f. of W when (a) The first die has three faces numbered 0 and three faces numbered 2, and the second die has its faces numbered 0, 1, 4, 5, 8, and 9. (b)...

please help` ORGANIC
synthesize olivetol from benzene

science
how do you make 5-Pentyl-1,3-benzenediol from just benzene? 1.Benzene + Br2 +FeBr3-->Benzene-Br??

Physics
15 cm in front

HSM 220 Week 6 Budget Matrix
Yes you are absolutely correct!

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 companie...

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)

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? .

AP Calculus
integrate |sint(t^2)| dt with 0<t<3

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 near...

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

Maths - check please
if boston is 14 feet above sea level and the ice cap is 680,000 cubic miles of water what impact would boston have?

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?

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

geometry
what is true about the slopes of two perpendicular lines niether of which is vertical?

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

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

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

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.

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?

poetry
whats the meaning of the poem SOMEWHERE TO PARIS BY RICHARD BLANCO?

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

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

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

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.

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 ____?

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?

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

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

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...

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. ...

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 y...

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...

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.

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

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

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

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

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%

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 teh M and set it eqaul to (Ea)/R....and R is 8.314jouls/mole.K and s...

7th grade
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.

Chemistry
what is the outer energy level for beryllium?

Chemistry
how does the outer energy level relate to the ionization energy?

Chemistry
How does the outer energy level(period)relate to the atomic radius?

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

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?

Physics
.1

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...

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...

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...

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 ...

calculus
Evaluate the limit lim sin4x/tan9x x-> 0

calculus
Let f(x)=4cos^5x. Find f'(x)

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

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?

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

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

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 ...

math
thank you

algebra
33x+38x=284 71x=284 71x/71=284/71 x=284/71 x=4

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?

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

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

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.

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

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 ...

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

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.

algebra
2x-5(X+3)> -20

algebra
2x-5(x=3)>-20

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 ...

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.

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; unreal...

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 availab...

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

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 perpe...

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 reas...

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

business law
There is no question that Ruth’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&...

trig
okay i think that is right. thank you

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

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

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

algebra
*verify that it is an identity

algebra
sin(270 degrees - theta) = -cos(theta)

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

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

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

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

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.

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?

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 < ...

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 ...

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."

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.

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.

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)

staticitics
First 7"s = 1 The second 7's = 5.75

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...

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...

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