Tuesday
October 21, 2014

Posts by Sandy


Total # Posts: 659

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

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...
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
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

algebra
slope intercept form is y= mx + b So get the y on one side -2x=-1y-6 becomes y=2x-6 and 3x + 3y=-18 becomes 3y=-3x-18 and then y=-1x-6
March 23, 2010

help me
I'm brown, I have two eyes and no ears. I'm brown on the outside and white on the inside.. What am I?
March 23, 2010

Math 30
The first 3 terms in one row in the Pascals triangle are 1, 10, and 45. Determine the next two terms in this row. Did I do this right.10C4=210 and 10C5=252
March 22, 2010

Math 30
Determine the constant term in the expansion of (x+2)^9. would it be 2^9?
March 22, 2010

Business law
Fess, a farmer, contracted to sell his cabbage crop to Chris C. for $475, the contract being made one week before the harvest. The contract was oral. After the harvest Fess quickly sold the crop to Don Trump instead for $700 when Trump called and offered to pay immediately ...
March 22, 2010

Trig 30
How would I find the general solution for x/2=2pi/3 and x/2=pi/3?
March 19, 2010

Math (FST Exponential & Logarithm)
What is the amount and type of the growth factor of the model: y=3(1.04)^x Determine the equation for the asymptote: y=2+ log(x-3) For the second question, I don't even have an idea what is to be determined.
March 17, 2010

math 30
Describe how the graph of y=f(-2x+6)+7 can be obtained from the graph y=f(x)
March 17, 2010

math 30
I need to write 4x^2 - y^2 -8x -4y + 16 = 0 in standard form and I keep getting it wrong. Could someone please help me. Thanks
March 16, 2010

math 30
Help please i need to write 4x^2 -y^2 -8x -4y +16 =0 in standard form.4x^2 -8x - y^2 -4y=-16 so 4(x^2 -2x +1)-(y^2-4y+4= -16 -4 +4 so 4(x-1)^2/-16 -(y-2)^2/-16 =1 so (x-1)^2/-4 -(y-2)^2/-16 so if I multiply everything by -1 it will get rid of my (-) on the left and I'm ...
March 16, 2010

conics
The graph of y=x^2 is reflected in the x-axis, then stretched vertically by a factor of 2, and then translated 3 units to the left and 1 unit down. I need to write the equation of this parabola in standard and general form. I have 4 other questions so could someone please show...
March 15, 2010

College Physics
A 3400 kg open railroad car coasts along with a constant speed of 7.50 m/s on a level track. Snow begins to fall vertically and fills the car at a rate of 5.10 kg/min.Ignoring friction with the tracks, what is the speed of the car after 85.0 min ?
March 14, 2010

math 12 logarithms
I need to express log base 5 sqrt5 =0.5 in exponential form. Would it be 5^0.5 =sqrt5. I'm not really understanding this unit very well. Any explaination would be greatly appreciated.
March 11, 2010

math 12 logarithms
How would I go about proving 1/log a +1/log a = 1/log base 100 a. Any help would be greatly appreciate. Thanks
March 11, 2010

trig
I don't understand how to do this type of question? If 9cos^2 theta +3cos theta=0, where 90 degrees <theta<180 degrees, what is the value of theta, correct to the nearest tenth of a degree. Could someone please explain. Thanks
March 10, 2010

trig
Solve the following for x, where 0 < x < 2 pi. 2 cos^2 x + cos x = 1
March 8, 2010

Trigonometry
Where does the graph of y = tan theta intersects the graph of y = -1.
March 7, 2010

Trigonometry
Where does the graph of y = tan theta intersect the graph of y = -1 where n is any integer?
March 7, 2010

trig math 30
Find the exact value of cos 8 degrees cos 38 degrees + sin 8 degrees sin 38 degrees
March 6, 2010

math 30 Trig
If sin theta = -7/8, then the value of 1/cot theta in the interval 3pi/2 <theta <2pi is:
March 6, 2010

math 30 Trig
A central angle subtends an arc of 35 cm. If the radius of the circle is 12 cm, what is the measure of the central angle?
March 6, 2010

College Physics
A projectile is fired at an upward angle of 55.0 degrees from the top of a 230m cliff with a speed of 180m/s.What will be its speed when it strikes the ground below? (Use conservation of energy.)
February 25, 2010

Math
If Angel plants the same number of flowers in each of 5 rows, he will have none left over. If he plants 1 in the first row and then 1 more in each row than he did in the previous row, he will plant flowers in only 4 rows. how many flowers does he have?
February 18, 2010

College Physics
What will a spring scale read for the weight of a 73 kg woman in an elevator that moves upward with constant speed of 5.4 m/s?
February 16, 2010

PSY
what things can a LEADER do to help prevent or "break through" groupthink?
February 12, 2010

college
what things can a LEADER do to help prevent or "break through" groupthink?
February 12, 2010

PSy
Sorry
February 12, 2010

College
In what ways and in what situations can increased diversity increase NEGATIVE conflicts and impede team effectiveness? What other factors can interfere with productive team experiences?
February 12, 2010

College Physics
COrrection on the problem. Its suppose to be 24 degree incline. I did mu= 1/2tan(24degrees)= .222 .222 was not the right answer for some reason. Can you help please?
February 11, 2010

College Physics
A child slides down a slide with a 24 incline, and at the bottom her speed is precisely half what it would have been if the slide had been frictionless.Calculate the coefficient of kinetic friction between the slide and the child.
February 11, 2010

History
Compare the interaction between the Japanese, New World and Europeans. How did the Europeans treat the people of Japan and the New World? Who was treated better? Why?
February 11, 2010

8th grade science
What is a vertical section of the ocean from it's surface to the ocean floor called?
February 4, 2010

science
which causes winter snow and summer rain at higher latitude?
January 21, 2010

math
the area or peur is 3 4/25 times the area of purgatory the area of purgatory is 157000 what is the area of peur
January 14, 2010

Algebra
Let U = {u, n, i, t, e} A = {n, i, t} B = {n, e} C = {u, n, i, t, e} D = {u, e} Find each of the following: (a) A ¡ä B (b) C ¡å D (c) ¡ÂD¡Â (d) ¡ÂA ¡å D¡Â (e) B ¡ä ¡ÂC&...
January 11, 2010

Algebra
How many elements are in the Cartesian product D x E?
January 11, 2010

Algebra
List all the subsets of {m, a, t, h}.
January 11, 2010

child development and human behavior
Cognition refers to what.
December 28, 2009

social studies psychology
Observing what a person does under carefully controlled circumstances is a main feature of what? 1.the Thematic Apperception Test 2.behavioral assessment 3.Rorschach methods 4.the MMPI-2
December 21, 2009

psychology
In psychology, the study of personality focuses on what? change. stability. external factors. learned factors.
December 20, 2009

Math
The computer club invested $2200, part at 4.5% interest and the rest at 7%. The total annuel interest earned was $144. How much was invested at each rate?
December 17, 2009

physics
The driver of a 1024 kg truck traveling 32.6 m/s North on I-77 has to make a sudden stop. If it requires a distance of 57.1 m for the truck to stop, use conservation of energy to find the net force acting on the truck.
December 9, 2009

physics
A softball (350g) is thrown with an initial speed of 23 m/s straight upward. What is the maximum potential energy the softball can have?
December 9, 2009

physical science
How much time should be allowed for a 392-km car trip if the car will be traveling at 120 km/h?
December 4, 2009

Physics
What is the potential energy of a 3kg ball that is on the ground. -do i do mgh? (9.8)(3kg) ?
November 22, 2009

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