Friday
August 22, 2014

Posts by David


Total # Posts: 1,636

Trigonometry functions
sketch the angle 2pi/3
November 28, 2013

Trigonometry
Write sin(125°) in terms of its cofunction. Make sure your answer is a function of a positive angle.
November 28, 2013

Trigonometry
Write sin (125°) in terms of its cofunction. Make sure your answer is a function of a positive angle
November 28, 2013

Trigonometry
find the exact value of sin 2α if cos α=4/5 (α in quadrant I)
November 28, 2013

Trigonometry
find the exact value of tan 2β if sin β=5/13 (β in quadrant II)
November 28, 2013

Trigonometry
evaluate cot 2x = 5/12 with 0<=2x<=pi find cos x and sin x and tan x?
November 28, 2013

Trigonometry
if cot 2θ = 5/12 with 0≤2θ≤π find cos θ, sin θ, tan θ
November 28, 2013

Trigonometry
if cot 2x = 5/12 with 0<=2x<=pi
November 28, 2013

Trigonometry
Write sin(125°) in terms of its cofunction. Make sure your answer is a function of a positive angle.
November 28, 2013

pre-alg
Oh, I get it. The question is asking you what scale you are going to use for your scale drawing. Here is the definition from my Geometry Book: Scale- a ratio that describes how the dimensions in a scale drawing are related to the dimensions of the actual object. An example of ...
November 25, 2013

Finance
If the bank holds $65 million in deposits and currently holds bank reserves such that excess reserves are zero, what required reserves ratio is implied?
November 18, 2013

Science
What is the structure that directs chromosome movement during mitosis and aids in the formation of the microtubule scaffolding that pulls on the chromosomes? a. Centrosome (maybe) b. Nucleosome (don't think so) c. Spindle (maybe) d. Cytokinesis(don't think so)
November 8, 2013

basic rigging trade terms quiz
an eyeabolt is a piece of rigging hardware wiht a ------ which means it has a series of spiral grooves cut into it.
November 6, 2013

basic rigging trade terms quiz
if the ----- is showing, the sling is not safe for use.
November 6, 2013

Math
26-17+15
November 5, 2013

Mythology
Where did the box with Perseus and Danae float to?
October 27, 2013

Mythology
According to some stories, Daedalus had a talented nephew who was pushed off a tower. Minerva/Athena caught him and changed him into a Perdix. What kind of bird is a Perdix?
October 27, 2013

Science
Thanks.
October 27, 2013

Science
I don't know I think B.
October 27, 2013

Science
So what is the answer?
October 27, 2013

Science
Ribosome: protein synthesis: mitochondria: What comes next? a. cell support b. energy release (don't think so) c. nutrient storage (don't think so) d. protein transport
October 27, 2013

Science
What plant cell organelle contains its own DNA and ribosomes?
October 27, 2013

Biology
What happens when a substance dissolves in the watery solution outside of a cell and equilibrium is disrupted. a. Water from the cell will move into the solution b. water from the solution will move into the cell c. the pores in the cell membrane will become clogged with the ...
October 24, 2013

History
Thanks for all your help Ms. Sue!
October 21, 2013

History
What are the midway islands, Ms. Sue?
October 21, 2013

History
Also, I have another question: During World War I what is a place that has strategic value in the middle of the Pacific Ocean? a. Hawaii b. Midway Islands
October 21, 2013

History
Ms.Sue I am wondering if you know where the Titanic left in Great Britain?
October 21, 2013

History
Well, I asked in class today and the teacher said the questions were right. So, I was thinking that the titanic was sailing between the US and England. I think the 3 countries that make up the triple entente are france, russia, and great britain
October 21, 2013

History
The Titanic was a ship that sailed between which 2 countries? a.Britain b.United States c.England What 3 countries make up the triple entente? a.France b.Russia c.Great Britain d.England Each word can only be used once for each question.
October 21, 2013

History
What 3 slogans used by the government to try to get people to conserve? What law makes it a crime to help the enemy during war? What law makes it a crime to criticize the government during wartime?
October 18, 2013

quantum physics
doing 8b
October 18, 2013

quantum physics
ya, this time
October 18, 2013

quantum physics
got my error 8d ƒÆ= 0 and ϕ = 2bt check and tell me if i am right? 8a ƒÆ = pi/3 and ϕ = 0
October 18, 2013

quantum physics
sorry for that @ss01 your phi is wrong that i am for sure it cannot be 0
October 18, 2013

quantum physics
D Į = 2Bt phi = pi/2 C - pi/3; 2*B*t do you need explanation ?
October 18, 2013

vocabulary
Shortly before the Russian Revolution, an eccentric man namen Rasputin became (1)
October 17, 2013

Biology
What role do vesicles play in processing the proteins in the Golgi Apparatus? a. They create the proteins.(No) b. They modify the proteins. (No) c. They store the proteins. (Maybe) d.They transport the proteins. (Maybe)
October 15, 2013

Biology
What role do vesicles play in processing the proteins in the Golgi Apparatus? a. They create the proteins.(No) b. They modify the proteins. (No) c. They store the proteins. (Maybe) d.They transport the proteins. (Maybe)
October 15, 2013

Geometry
Write an equation of the line that pass through point P and is perpendicular to the line with the given equation. P(3,5); y=4
October 14, 2013

Geometry
The actual question is : Write an equation of the line that pass through point P and is perpendicular to the line with the given equation. P(3,5); y=4
October 14, 2013

Geometry
Sorry, I meant to say perpendicular instead of parallel.
October 14, 2013

Geometry
Write an equation of the line that pass through point P and is parallel to the line with the given equation. P(3,5); y=4
October 14, 2013

Quantum Physics
seems you are doing a nice deal out here
October 12, 2013

Quantum Physics
jason what happened?
October 12, 2013

math
32
October 9, 2013

physics
A police car, whose siren has a natural frequency of 620Hz, moves away from a wall and towards a stationary observer at a speed of 30km/h. What is the beat frequency perceived by the observer? If the observer stands between the car and the wall, what beat frequency does he ...
October 9, 2013

Physics
The coefficient of static friction between the 2.90 kg crate and the 35.0° incline of Figure P4.41 is 0.260. What minimum force F must be applied to the crate perpendicular to the incline to prevent the crate from sliding down the incline?
October 7, 2013

italian
se mangi troppi zuccheri puoi avere mal di denti.
October 6, 2013

geography (ms. sue)
why might workers be unwilling to take jobs in siberia?
October 5, 2013

physics
Car a with a mass of 1250kg is travelling at 30m/s to the east. Car b is a truck with a mass of 2000kg, travelling to the west at 25m/s. Assume these two vehicles experienc an inelastic collision but do not stick together and car a goes off 10m/s to the west what will be the ...
October 3, 2013

Geometry
Yes a is equal to b. Thanks for your help!
October 2, 2013

Geometry
But is 5a equal to 5b?
October 2, 2013

Geometry
Substitution Property of Equality: If a=20, then 5a= _____. The substitution rule states that If a=b then a can be substituted for b in any equation or expression. So I think that 5a=5b but the number answer is 100. Am I correct?
October 2, 2013

chemistry
Nope, just working in a study group. Each person asking a question. Thanks for the help. I thought about doing something like that but I was writing them with the noble gas first and that was making it difficult to see the pattern.
September 30, 2013

chemistry
Sort these elements into isoelectronic groups. Into three different boxes/sections. Elements: F- O2- Al3+ S2- Ti4+ K+ He Li+ B3+
September 30, 2013

chemistry
it says "how many joules of energy would be required to heat 29.8 grams of carbon from 25.5 C to 79.3 C. (s= .71 Joules / grams times carbon) & the formula is Q= M x C x delta T .
September 30, 2013

chemistry
it says "how many joules of energy would be required to heat 29.8 grams of carbon from 25.5 C to 79.3 C. (s= .71 Joules / grams times carbon) & the formula is Q= M x C x delta T .
September 30, 2013

chemistry
1138.3004?
September 30, 2013

chemistry
Yeah. What did you get?
September 30, 2013

chemistry
So the answer would be 1233.5 joules?
September 30, 2013

chemistry
How?
September 30, 2013

chemistry
it says "how many joules of energy would be required to heat 29.8 grams of carbon from 25.5 C to 79.3 C. (s= .71 Joules / grams times carbon) & the formula is Q= M x C x delta T .
September 30, 2013

Biology
Glucose + Fructose=__________________. I am thinking it is sucrose or table sugar but I am not sure.
September 29, 2013

Math
In a certain Library, there are r bookcases with s shelves in each book case. If a total of b books is to be distributed among the shelves, What is the number of books per shelf? a) b/rs b) rb/s c) rsb d) r/s-b e) b/s-r
September 21, 2013

math
what is 1/3 of 1/2?
September 17, 2013

Lincoln middle
What does it mean when # are in () for instance (12)(3)=
September 3, 2013

pol 125 - American National Government
what extent the war on terror justifies the President's indefinite detention of "enemy combatants" without the possibility of the minimal judicial review protected by habeas corpus?
August 4, 2013

calculus
Solve the DE by using the Laplace transform: x''+x=cos(3t), x(0)=x'(0)=0
July 27, 2013

physics
A board that is 20 cm wide, 5 cm thick, and 3 m long has a density of 350 kg/m^3. The board is floating partially submerged in water do density 100 kg/m^3. What fraction of the volume of the board is floating above water?;
July 13, 2013

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=-i-4j+2k,b=3i+2j-2k,c=2i-3j+k,Calculate a-(b-c) (a)-6(b)6(d)9(d)-9 (Q3)The resultant of vectors A...
July 12, 2013

Math
(2/25 +13/25) - (2/5 - 14/15)
July 8, 2013

(pls help) algebra
4x+y-32=1, 6x-y-4z=7, 10x+2y-6z=5 pls show me how to solve for x,y,z. Ans:xx=1.5,y=-2,z=1
July 8, 2013

(pls help) Trig
point P and Q are respectively 24m north and 7m east of point R. What is bearing of Q and P to the nearest whole degree.(a)52(b)164(c)134(d)159
July 7, 2013

statistics
6. According to the records of Enersource, an electric company serving the Mississauga area, the mean electricity consumption for all households during winter is 1650 kilowatt-hours per month. Assume that the monthly electricity consumption during winter by all households in ...
June 23, 2013

statistics
The pucks used by the National Hockey League for ice hockey must weigh between 5.5 and 6.0 ounces. Suppose the weights of pucks produced at a factory are normally distributed with a mean of 5.75 ounces and a standard deviation of 0.11 ounce. What percentage of the pucks ...
June 23, 2013

statistics
Page 1 of 2 4. Despite all efforts by the quality control department, the fabric made at Benton Corporation always contains a few defects. A certain type of fabric made at this corporation contains an average of .5 defects per 500 yards. Using the Poisson formula, find the ...
June 23, 2013

statistics
3. Magnetic resonance imaging (MRI) is a process that produces internal body images using a strong magnetic field. Some patients become claustrophobic and require sedation because they are required to lie within a small, enclosed space during the MRI test. Suppose 29% of all ...
June 23, 2013

statistics
2. Bender electronics buys keyboards for its computers from another company. The keyboards are received in shipments of 100 boxes, each box containing 20 keyboards. The quality control department at Bender Electronics first randomly selects one box from each shipment and then ...
June 23, 2013

Statistics
1. Let x be the number of heads obtained in two tosses of a coin. The following table lists the probability distribution of x. x 0 1 2 P(x) .25 .50 .25 Calculate the mean and standard deviation of x. Give a brief interpretation of the value of the mean.
June 23, 2013

physics PLEASE HELP!
what are three possible thicknesses that a soap film should be to transmit yellow light ? (Lambda=590nm)
June 15, 2013

Statistics
4. An environmental agency will randomly select 4 houses from a block containing 25 houses for a radon check. a) How many total selections are possible? b) How many permutations are possible?
June 11, 2013

Statistics
3. The following table gives a two-way classification of all basketball players at a university who began their college careers between 2004 and 2008, based on gender and whether or nor they graduated. Graduated Did Not Graduate Male 126 55 Female 133 32 a) P(female or did not...
June 11, 2013

Statistics
. Two thousand randomly selected adults were asked whether or not they have ever shopped on the internet. The following table gives a two-way classification of the responses obtained. Have shopped Have never shopped Male 500 700 Female 300 500 Suppose one adult is selected at ...
June 11, 2013

Statistics
1. The mean monthly mortgage paid by all home owners in a town is $2365 with a standard deviation of $340. a) Using Chebyshev’s theorem, find at least what percentage of all home owners in this town pay a monthly mortgage of (i) $1685 to $3045 & (ii) $1345 to $3385 b) ...
June 11, 2013

Accounting
A = 500000 b = 40
June 7, 2013

fundamentals
Calculate the total constant force needed to accelerate a vehicle with mass 1400kg and tractive resistance of 320N from 19km/h to 95km/h over a distance of 0.8km on a horizontal plane.show working?
June 5, 2013

fundamentals
A playground has its highest point 2.2m above the lowest point, and the slide is 4.9m long. If the average resistance to motion is one-fifth of the weight of the child(mass 40kg), find the speed at which the child reaches the bottom show working?
June 5, 2013

9/11
What was your response to the 9/11 attacks when you first found out about it? I need to interview some people and get their answers to this question.
June 4, 2013

Phyics Toughest question on earth
Dude Can`t Understand Please Help
June 4, 2013

physics
why does it take a longer time for a kilogram of water than a kilogram of copper to reach the same temperature?
May 29, 2013

Physics
Two forces act on a 55-kg object. One force has the magnitude 65 N directed 59 clockwise from the positive x-axis, and the other has a magnitude ofm35 N at 32 clockwise from the positive y axis. What is the magnitude of acceleration?
May 29, 2013

Ethics
HIPAA, GLB, and COPPA laws can help ensure people's privacy. What is their ethical justification? Is there gray area in these laws? How do some businesses try to find their way around these laws
May 24, 2013

math
If 1/cos - cos=a^3 and 1/sin - sin=b^3 Show that tan=a/b
May 19, 2013

ethics
ok well I'm just confused about the whole idea of "human moral predicament" and meta-ethical... I get that Nietzsche and Wittgenstein both have ways of showing what is good and bad, and they both have there reasons. But again, when it comes to the human moral ...
May 15, 2013

ethics
Both Nietzche and Wittgenstein raise the issue of the morality of morality. In other words, they ask "Why should someone be good?" Describe the different ways in which Wittgenstein and Nietzsche understand the human moral predicament i.e. the challenge of asserting ...
May 15, 2013

CHEMISTRY
how would a chemistry student make a 600 mL of 1.5 M solution of NaBr?
May 9, 2013

CHEMISTRY
how would a chemistry student make a 600 mL of 1.5 M solution of NaBr?
May 9, 2013

Math
What is the barbell method
May 7, 2013

VBS 2010
Write a Web program to calculate the discount rate and interest rate for a bond. If a bond is purchased for n dollars and sold one year later for m dollars, then the discount rate is m-2/m and the interest rate is m-n/n, where each is expressed as a percent.
May 5, 2013

Chemistry
Thank you !!
May 1, 2013

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