Questions Asked on
May 7, 2011

physics
A 3.1kilogram gun initially at rest is free to move. When a 0.015kilogram bullet leaves the gun with a speed of 500. meters per second, what is the speed of the gun?
asked by ashley  HELP PLEASEE!!! 
finite math
The price of a new car is $16,000. Assume that an individual makes a down payment of 25% toward the purchase of the car and secures financing for the balance at the rate of 6%/year compounded monthly. (Round your answers to the nearest cent.) What monthly
asked by Amber 
Physics
a plane travels 5.0x10^2 m while being accelerated uniformly from rest at the rate of 5.0m/s^2. What final velocity does it attain?
asked by Danielle 
trigonometry grade 11
Brit and Tara are standing 13.5 m apart on a dock when they observe a sailboat moving parallel to the dock. When the boat is equidistant between both girls, the angle of elevation to the top of its 8.0 m mast is for both observers. Describe how you would
asked by anonymous 
Math
A die is rolled twice. What is the probability that the sum of the rolls is less than 4 given that one of the rolls is a 1? The answer is 3/11. Could someone tell me how to get this. Thanks?
asked by Ed 
finite math
Kane Manufacturing has a division that produces two models of hibachis, model A and model B. To produce each modelA hibachi requires 3 lb of cast iron and 6 min of labor. To produce each modelB hibachi requires 4 lb of cast iron and 3 min of labor. The
asked by Amber 
UCI Chemistry Webworks
SPARTAN: Using the bond lengths recorded in Table II determine bond order and the major resonance structures of the following: A. For CVOH, the CC bonds are longer than the bond lengths found in . (Use i, ii, iv, etc. for your answer) B. For CVOH, the CN
asked by Sarah 
Chemistry
Heart pacemakers are often powered by lithiumsilver chromate “button” batteries. The overall cell reaction is: 2Li(s) + Ag2CrO4(s) > Li2CrO4(s) + 2Ag(s) Lithium metal is the reactant at one of the electrodes of the battery. Is it the anode or
asked by Jay 
English
Had to correct sentences so the parallel ideas are expressed 1. Is it true that Superman could leap tall buildings, run faster than a locomotive, and those bullets would bounce off his skin? 2. To celebrate the canned pork product called Spam, we attended
asked by Amor 
math
Suppose the cost function associated with a product is C(x) = cx + F dollars and the revenue function is R(x) = sx, where c denotes the unit cost of production, s the unit selling price, F the fixed cost incurred by the firm, and x the level of production
asked by Dee 
physics
Two mirrors are placed at a 90° angle to each other. A light ray strikes one mirror 0.620 m from the intersection of the mirrors with an incident angle of 36.5°. The ray then travels a distance d before reflecting from the second mirror. (a) What is the
asked by bari 
Chemistry
Calculte the Percent Yield if 104grams of CH3CO2CH2CH3 is produced by reaction of 111grams of CH3CO2H according to : CH3CO2H + CH3CH2OH = CH3CO2CH2CH3 + H20
asked by Denise 
geography
i need two examples of how geography and climate affect where most people in east asia and southeast asia choose to live.
asked by Delneisha 
health
Describe the possible barriers to entry and exit for: (a) a physician wanting to establish a solo practice office in internal medicine, (b) a company offering a health club facility in the same building where employees work, and (c) a tertiary hospital
asked by Karol 
physics
A fisherman notices that his boat is moving up and down periodically without any horizontal motion, owing to waves on the surface of the water. It takes a time of 2.60 for the boat to travel from its highest point to its lowest, a total distance of 0.620 .
asked by laura 
physics
A shiny metallic Christmas ball ornament 5.10 cm in diameter is used as a mirror. What is the mirror's focal length? please answer in cm. thanks.
asked by erin 
health
Children's Hospital in Boston, Massachusetts, has long been considered an outstanding medical center specializing in the diagnosis and treatment of pediatric problems. This facility is linked academically to the Harvard University Medical School. Conduct a
asked by Anonymous 
physics
How high could one horse raise a 100N weight (10kg) in 1 second?
asked by ganga 
statistics
The weight of a small Starbucks coffee is a random variable with a mean of 360 g and a standard deviation of 9 g. Use Excel to find the weight corresponding to each percentile of weight. a. 10th percentile b. 32nd percentile c. 75th percentile d. 90th
asked by maribel 
Physics
If 0.045 kg of ice at 0 C is added to 0.390 kg of water at 34 C in a 0.150 kg aluminum calorimeter cup, what is the final temperature of the water? T = degree C
asked by Anonymous 
Finite Math
A bank deposit paying simple interest at the rate of 8% per year grew to a sum of $1200 in 10 months. Find the principal. (Round your answer to the nearest cent.)
asked by Dee 
Physic
A 89.0 kg person stands on one leg and 90% of the weight is supported by the upper leg connecting the knee and hip jointthe femur. Assuming the femur is 0.640 m long and has a radius of 1.90 cm, by how much is the bone compressed?
asked by Bret 
health
RetinA is a topical ointment originally developed for the treatment of severe cases of acne and related skin disorders. An observed side benefit resulting from use of this product is its beneficial effect on aging skin. If the manufacturer of this product
asked by Tesa 
physics
Need help on which formulas I use to solve problems? A coil of wire with 200 circular turns of radius 3.00 cm is in a uniform magnetic field along the axis of the coil. The coil has R = 40.0 ohms. At what rate, in teslas per second, must the magnetic field
asked by physicsclass 
physics
You look into a shaving mirror and the upright image of your face is 40.0 cm away from you. The image has a magnification of 1.50. (a) How far away are you from the mirror? (b) What is the radius of curvature? all answers should be in cm. thanks.
asked by rene 
physics
A mirror creates an image of magnification −1/3. (a) Is the image upright or inverted? (b) If the object is 7.75 cm tall, what is the height of the image? State your answer with the correct sign. answer to part B should be in cm. thanks.
asked by jess 
finite math
As online attacks persist, spending on information security software continues to rise. The table gives the forecast for the worldwide sales (in billions of dollars) of information security software through 2007 (t = 0 corresponds to 2002): Year, t 0 1 2 3
asked by Amber 
Physics
An aluminum spoon at 84 C is placed in a Styrofoam cup containing 0.180 kg of water at 12 C. If the final equilibrium temperature is 21 C and no heat is lost to the cup itself or the environment, what is the mass of the aluminum spoon?
asked by Amy 
Chemistry
For the following balanced equation: 2 Ag+ (aq) + Cu(s) Cu2+ (aq) + 2 Ag(s) Which letter corresponds to the correct cell notation at standard state conditions? A. 2Ag+(aq) Cu2+(aq) 2Ag(s) Cu(s) B. Cu(s) Cu2+(aq) Ag+(aq) Ag(s) C. Ag+(aq) Cu2+(aq) Cu(s)
asked by Jessie 
Physics Question
Here is a demonstration Pascal used to show the importance of a fluid's pressure on the fluid's depth : An oak barrel with a lid of area 0.17 m^2 is filled with water. Along, thin tube of crosssectional area 4.7×10−5 m^2 is inserted into a hole at the
asked by Catherine 
Chemistry
Choose the two halfreactions from a table of standard reduction potentials that most closely approximate the reaction that occur within the battery. What is the standard voltage generated by a cell operating with these halfreactions? 2Li(s) + Ag2CrO4(s)
asked by Jay 
UCI Chemistry Webworks
For the following balanced equation: 2 Ag+ (aq) + Cu(s) Cu2+ (aq) + 2 Ag(s) Which letter corresponds to the correct cell notation at standard state conditions? A. 2Ag+(aq)  Cu2+(aq)  2Ag(s)  Cu(s) B. Cu(s) Cu2+(aq)  Ag+(aq)  Ag(s) C. Ag+(aq) 
asked by Tom 
Physic
If 0.045 kg of ice at 0 C is added to 0.390 kg of water at 34 C in a 0.150 kg aluminum calorimeter cup, what is the final temperature of the water? If the final equilibrium temperature is 21 C and no heat is lost to the cup itself or the environment, what
asked by Anonymous 
life orientation
what are the human and social factors that cause illhealth, sickness, truama, accidents, crisis and disasters within the context of contemporary social or environmental issues in south africa
asked by anonymous 
Chem
For the following electrochemical cell: Fe(s) Fe2+(aq) MnO4–(aq) Mn2+(aq) Pt(s) Which letter corresponds to the correct balanced chemical equation in an acidic solution? A. Fe(s) + 8H+(aq) + MnO4–(aq)Mn2+(aq) + 4H2O(l) + Fe2+(aq) B. 5Fe(s) + 16H+(aq) +
asked by Anonymous 
latin
how do you say break camp in latin
asked by Anonymous 
Chemistry
If 135 g of ice at 0.0°C is added to 2.96 L of water at 85°C, what is the final temperature of the mixture?
asked by teena 
finite math
Carlos invested $6,000 in a money market mutual fund that pays interest on a daily basis. The balance in his account at the end of 8 mo (245 days) was $6,230.23. Find the effective rate at which Carlos's account earned interest over this period (assume a
asked by Amber 
biology
14 points Save A photosynthesis experiment uses Chlorella to track the route taken by 14C in photosynthesis. The 14C is provided from CO2 and no new sources of CO2 are available. After the experiment the scientist extracts all of the starch produced and
asked by jack 
Physic
In a dramatic lecture demonstration, a physics professor blows hard across the top of a copper penny that is at rest on a level desk. By doing this at the right speed, he can get the penny to accelerate vertically, into the airstream, and then deflect it
asked by Chao 
Geometry
How do you find the ratio if the areas of 2 similar triangles in which the ratio of a pair of corresponding sides is 4:1
asked by Jen 
English
I forgot to add the following sentences. Thank you very much. 1) When we approached his mother, she went away and set on a bench on her own. 2) Her husband suffers from depression (??) and she doesn't want to talk to anyone, not even with her son. 3) Can
asked by Henry1 
health
A primary care medical group has a list of patients who had once used the group on a regular basis as their primary source of care. However, in scanning their records, these patients had not been in for an appointment in the past 2 years. The senior
asked by Liberty 
Physic
The simple pendulum in a tall clock is 0.30 m long. What is the period of this pendulum? T = s What is the frequency of this pendulum? f = Hz
asked by Anonymous 
physics
You and a friend are playing a game of squirtgun tag in a maze. Suddenly you see your friend's image in a small planar mirror. You take a shot over the barrier in front of you and find that your friend is just at the end of the 7.0 m range of your squirt
asked by cate 
Physical science
how can i calculate the number of: 1.molecules in 30g water.2.atoms in 50 dm^3 nitrogen gas.3.nucleons in 10 cm^3 flourine gas?
asked by sandy 
Chemistry
Determine the # of moles of Al2S3 that can be prepared by the reaction of 0.400 moles of Aluminum with 0.700 moles of Sulfur, and Also find the # of moles of reactant in excess
asked by Denise 
Physics
If it takes a particle in SHM 0.20 s to travel from the equilibrium position to the maximum displacement (amplitude), what is the period of oscillation?
asked by Amy 
Chemistry
Choose the two halfreactions from a table of standard reduction potentials that most closely approximate the reaction that occur within the battery (Pacemaker). What is the standard voltage generated by a cell operating with these halfreactions? (i got
asked by Jay 
business
what advantage might a socialist system have in responding o the needs of people struck by emergency situation like the earthquake that occured in haiti in january 2010
asked by sharron 
Chemistry
Use the Ideal Gas Law to determine the volume of CO2 produced at 25oC 1.5 atm of pressure from the combustion of 35 grams of C6H10.
asked by Bimpe 
math
In order to determine the amount of liquid a spherical tank will hold, would you need to use volume or surface area?
asked by Stacey 
maths
a sum of money doubles in 20 years on simple interest. it will triple at the same rate in ?
asked by arshi 
trig
express the trig. ratios sinA,secA n tanA in terms of cotA.
asked by Anonymous 
Physics
A student reading his physics book on a lake dock notices that the distance between two incoming wave crests is about 0.65 m, and he then measures the time of arrival between the crests to be 1.8 s. What is the approximate speed of the waves?
asked by Josh 
Physic
The spout heights in the container in the figure are 15 cm, 30 cm, 45 cm, and 60 cm. The water level is maintained at a 68 cm height by an outside supply. What is the speed of the water out of the 15 cm high hole? What is the speed of the water out of the
asked by Bret 
life orientation
what are the human and social factors that cause illhealth, sickness, truama, accidents, crisis and disasters within the context of contemporary social or environmental issues in south africa
asked by anonymous 
Help in Understanding
Posted by Anonymous on Friday, May 6, 2011 at 8:45pm. How did the conflict occur? Was it just because of the land? I'm having some trouble understanding. Please explain to me. About the Red River Colony  Ms. Sue, Friday, May 6, 2011 at 9:18pm The conflict
asked by Emma 
trig
A tree casts a shadow 50 yards long when the angle of the sun (measured from the horizon) is 30 degree. How tall is the tree in feet? (A) 150p3 (B) 50p3 (C) 150 (D) 75p3 (E) None of the above.
asked by minh 
Physics
Lead pellets of total mass 0.46 kg are heated to 107 C and then placed in a wellinsulated aluminum cup of mass 0.15 kg that contains 0.52 kg of water initially at 13.8 C. What is the equilibrium temperature of the mixture?
asked by Anonymous 
chemistry
If 39.2 of 0.177 is required to neutralize completely 22.0 solution, what is the molarity of the acid?
asked by Ivy 
Math
If sinx= 5/13, and x is a positive acute angle, find sin (x + 3pi/2)
asked by Ju 
science  biology
A photosynthesis experiment uses Chlorella to track the route taken by 14C in photosynthesis. The 14C is provided from CO2 and no new sources of CO2 are available. After the experiment the scientist extracts all of the starch produced and analyses the
asked by jack 
Physic
A husband buys a heliumfilled anniversary balloon for his wife. The balloon has a volume of 4.4 L in the warm store at 74 F. When he takes it outside, where the temperature is 55 F, he finds it has shrunk. By how much has the volume decreased?
asked by Anonymous 
Physic
A 3.8 kg object is supported by an aluminum wire of length 1.9 m and diameter 2.2 mm. How much will the wire stretch?
asked by Catherine 
childcare
The observation that children with down syndrome may alternate between periods of gain and functioning and periods of little or no advance is the? A functioning difference hypothesis. B variance hypothesis C.variance observation d.slowing and stablility
asked by madeline 
Chemistry
What is the halfcell reactions in a hydrogen fuel cell, and calculate the standard voltage at 25°C H2(g)+ O2(g)>2H2O(l)
asked by Jay 
trig
A triangle T has vertices P, Q and R. The length of the edge between P and Q is 10, and the angles at P and Q are 60degree and 45degree respectively. What is the radian measure of the angle at R? (A) 5pi/24 (B) 5/24 (C) 5pi/12 (D) 5/12 (E) None of the
asked by minh 
Math 116
in 1991 the life expectancy of males in certain county was 68.6 years in 1996 it was 70.9 years let t represent the life expectancy in year t and let t represent the number of years since 1991
asked by Jessie 
math
A sales tax of 6% of the cost of a car is added to the purchase price of $29,500. What is the total cost of the car, including sales tax
asked by Tevya 
Asande s.s L.o
discuss the signs and symptoms,describe the consequences,provide realistic and appropriate ways to combat problem,conclusion [an explanation of the importance of marking heathy/decision/ choices to avoid the consequences you have describe above ]
asked by Siyabonga 
Chemistry
What is the [H+] of a 0.1 M malonic acid with a Ka of 10^9 solution? I thought it was just (Ka x Ca)^(0.5), but that doesn't get me a pH of 5.
asked by Ed 
english
I am trying to do a outline but cant find the topic or thesis in (This question expresses a commonly held (by women) negative stereotype about guys of the male gender, which is that they cannot find things around the house, especially things in the
asked by regina 
Chemistry
Explain with values and reactions from standard reduction potentials tables why neither gold (I) nor gold (III) not to mention the base metal itself, tarnishes (that is can be oxidized by exposure to air)
asked by Jay 
Psychology
1. You are conducting research on sex differences in emails. Your hypothesis is that men use more declarative statements and women use more questions. Answer each of the following questions. • What might be the advantages of using the archival method?
asked by Shauntae 
Physics
A satellite is placed between the Earth and the Moon, along a straight line that connects their centers of mass. The satellite has an orbital period around the Earth that is the same as that of the Moon, 27.3 days. How far away from the Earth should this
asked by Roberto 
trig
Determine the value of cos(theta) given that cos(pi âˆ’ theta) = .2 (A) p.96 (B) .2 (C) âˆ’.2 (D) âˆ’p.96 (E) None of the above.
asked by minh 
Physics
A satellite is placed between the Earth and the Moon, along a straight line that connects their centers of mass. The satellite has an orbital period around the Earth that is the same as that of the Moon, 27.3 days. How far away from the Earth should this
asked by Roberto 
Principals of Management
Fernando, a manager in a retail store, is changing the work schedule of his longterm employees for the holiday season. He is using the same basic schedule as he did last year. Fernando should expect that his employees will be: I think the answer is D but
asked by Melisa 
Physic
A husband buys a heliumfilled anniversary balloon for his wife. The balloon has a volume of 4.4 L in the warm store at 74 F. When he takes it outside, where the temperature is 55 F, he finds it has shrunk. By how much has the volume decreased?
asked by Anonymous 
Algebra
on three consecutive passes , a football team gains 7 yards,losses 21 yards and gains 12 yard ,what number represents the total net yardage?
asked by sam 
hum/130
List at least two effects that organized religion has had on society. Give examples from past and/or present world events that illustrate your effects/points.
asked by karma 
Algebra
the length of a rectangle is fixed at 10 cm. What widths will make the perimeter greater thatn 74 cm?
asked by sam 
Algebra
In 1993, the life expectancy of males in a certain country was 71.5 years. In 1998, it was 73.6 years. Let E represent the life expectancy in year t and let t represent the number.
asked by Micheal 
math
:Explain why a prime number must be deficient.
asked by Stacey 
Grammar
Is the capital word used right in this sentence, if not how can i use it with the same meaning of the sentence His song was SKEPTICAL because it was so good Thank you!
asked by Hannah 
maths
solve the inequality 25x/7
asked by khadooj 
healthcare
What are the benefits and risks of advertising and marketing health care products and services to potential health care consumers? i need at least 2.
asked by bobbi 
life orientation
what are the human and social factors that cause illhealth,sickness, truama, accidents and disasters in south africa
asked by anonymous 
Physics
Lead pellets of total mass 0.46 kg are heated to 107 C and then placed in a wellinsulated aluminum cup of mass 0.15 kg that contains 0.52 kg of water initially at 13.8 C. What is the equilibrium temperature of the mixture?
asked by Ryan 
algebra
Given the function f(x) = −2x + 4, find x if f(x) = 20
asked by josh 
Chem
For the following electrochemical cell: Fe(s) Fe2+(aq) MnO4–(aq) Mn2+(aq) Pt(s) Which letter corresponds to the correct balanced chemical equation in an acidic solution? A. Fe(s) + 8H+(aq) + MnO4–(aq)Mn2+(aq) + 4H2O(l) + Fe2+(aq) B. 5Fe(s) + 16H+(aq) +
asked by Anonymous 
english
where is the thesis sentence in This question expresses a commonly held(by women)negative sterotype about guys of the male gender, which is they cannot find things around thehouse, especially things in the kitchen.
asked by regina 
Math
A coach is collecting a fee from each player on her soccer team. She collects the same amount of money from each player. The amount of money she collected over four days from some of the players is shown in the table below. Soccer Fees Collected Day Number
asked by Frances 
Math
Day Number of Players Amount Collected Monday: 4 $ 88 Tuesday: 7 $154 Wednesday: 6 $132 Thursday: 3 $ 66 Friday: 2 ???? A.On Friday, the coach will collect fees from 2 more players. What is the total amount of money the coach will collect from the 2
asked by Frances 
english
(I need to complete an out line with a introduction and a thesis sentence or statement but I can find what I am looking for here is the article) This question expresses a commonly held (by women) negative stereotype about guys of the male gender, which is
asked by regina 
physics project
how to develop a Rube Goldberg machine that will (1) raising a flag on a pole and (2) squeeze a minimum of a 1 cm length of toothpaste on a toothbrush.
asked by ganga 
Discrete Math
"The cube of every real number x is greater than or equal to x, and we can see that since 2^3=8>=2." ? Is this a correct argument?
asked by yengiang 
Finite Math
A {r,u,v,y} B {r,v,w,x} C {r,u,w,z} t and s are on the outsides. find (A intersect B) intersect Cc (A union B union C)c
asked by Dee 
trig
2. A circle has a radius of 10 centimeters. Find the length, in centimeters, of the arc intercepted by a central angle of 100 degree. (A) 50pi/9 (B) 100pi/9 (C) 500pi/9 (D) 18pi/5 (E) None of the above.
asked by minh 
English
I need to find a good site containing colloquial expressions used in everyday conversations (example, at the phone, at meals etc). I'd also like you to check these sentences, please. 1) Can you use the word “class party” where(to which?) you invite all
asked by Henry1 
Social Science
What are the three stages of crisis for stalking victims?
asked by Lula 
trig
A triangle T has vertices P, Q and R. The length of the edge between P and Q is 10, and the angles at P and Q are 60degree and 45degree respectively. What is the area of T? (A) 50p3/(1 +p3) (B) 10p3/(1 +p3) (C) 50/(3 + 3p3) (D) 10/(3 + 3p3)(E) None of the
asked by minh 
algebra
what does the formula D=(bc) represent
asked by marcus 
Algebra
collect like terms 14a+6b4a9b= 10a3b is this right?
asked by sam 
Medical Billing and Coding
Can anyone please help me with the research paper in compairing three different electronic medical records. If any one can bref me on this that would be great. I have done all the research my problem is I can't find the things that need to be addressed.
asked by Shannon 
Physic
A student reading his physics book on a lake dock notices that the distance between two incoming wave crests is about 0.65 m, and he then measures the time of arrival between the crests to be 1.8 s. What is the approximate speed of the waves?
asked by Amy 
math
: Do you feel that mathematicians make to much of the mathematics and nature connection? Why?
asked by Stacey 
Math  doing something wrong somewhere
Hi, I'm sure I'm doing something wrong here, I'm coming up with an exorbant amount of rainfall for ONE ROOF in a school. Somehow I don't think that in a droughtprone area it is feasable to expect the following to be true. I am unsure where I'm going wrong
asked by URGENT help plz plz plz plz 
math
how 2 write 7th may 2011 in 5letters without using numberss
asked by ana 
chemistry
what is the molar mass of a gas if 26.0L of the gas has a mass of 43.6g at 1.10 atm and 10.0 C?
asked by dee 
sociology
What types of situations or examples that can result in the elimination of functionalist theory when considering the social institution of the family?
asked by Sharon 
Finite Math
A {r,u,v,y} B {r,v,w,x} C {r,u,w,z} t and s are on the outsides. (a) (A B) Cc (b) (A B C)c
asked by Dee 
computers
What are the principal tools and technologies for accessing database information to improve business performance and decision making?
asked by Anonymous 
algebra
1. You are planning to spend no more than $10,000 and no less than $8,000 on your landscaping project. a. Write an inequality that demonstrates how much money you will are willing to spend on the project. b. For the first phase of the project, imagine you
asked by Girlee 
Grammar
Does this sentence make sense, if not how do you write it correctly Never give up to your dreams? Thank you!
asked by Hannah 
general knowledge
How do u write 7 th may 2011 in 5 letters without using numbers??
asked by Anonymous 
Psychology
I watched an episode of NOVA this week called "Secrets of The Wild Child" and I have a question, even though I'm watching the show on YouTube. 1) In what specific ways did Genie's early deprivation effect her development and socialization?
asked by Alex L. 
Psychology
A child with mental retardation but not autism is more likely to display_______ than a child with autism. A.self injurious behavior b.Smiling and eye contact c.sterotyped motor behaviors d.selfstimulatory behaviors i chose c but could you help or any
asked by cassidy 
To Regina
Let me know when you have your 7 sentences. (http://www.jiskha.com/display.cgi?id=1304794255#1304794255.1304796072 )
asked by Writeacher 
Trigonometry
How would you find the both primary solutions to 3cos(2x) = 2.5
asked by Alex 
U.S. History
What started the first ever American Civil War?
asked by Kenny 
criminal jsutice
How can not knowing the proper terminology affect you as you conduct criminal justice research?
asked by patricia nava 
trig
Find the sum of all of the solutions to the equation cos(2x) âˆ’ sin2(x) âˆ’ 1 = 0 in theinterval 0 < x < 5 pi. (Use radian measure for x.) (A) 15pi (B) 0 (C) pi (D) 10pi (E) None of the above.
asked by minh 
math
the average normal temperature in Albany in may is about 59F what is this temperature in Celsius?
asked by marycela 
trig
The hypotenuse of a right triangle has length 8 and one of the other edges has length 3. What is the sine of the angle opposite the edge of length 3? (A) 3/p55 (B) 3/8 (C)p55/8 (D) 55/64 (E) None of the above.
asked by minh 
calculus
I have a caternary arch kiln. the inside base, is 4 feet. The apex of the inside parabolic arch is four feet. How many feet is the inside of the kiln?
asked by Marcus Davis 
trig
Find the numerical value of cos(60degree) + cot(30degree): (A) 1/2 (B) 3p3/2 (C) 12 +p3 (D) 52p3 (E) None of the above.
asked by minh 
Math
how many 3digit numbers can be formed using only the digits 1 to 7, if the number 2 must be included? (Repetitions are allowed) The books says 127. Could someone please explain this? Thanks
asked by Jim 
math
Why is number theory important in mathematics?
asked by Stacey 
Physic
A certain object with a surface temperature of 150 degree C is radiating heat at a rate of 200 J/s. To triple the object's rate of radiation energy, what should be its surface temperature in Celsius?
asked by Anonymous 
Physics
You have been sent in a small spacecraft to rendezvous with a space station that is in a low circular Earth orbit, say, with a radius of 6,720 km, approximately that of the orbit of the International Space Station. Due to mishandling of units by a
asked by Catherine 
Physic
If it takes a particle in SHM 0.20 s to travel from the equilibrium position to the maximum displacement (amplitude), what is the period of oscillation?
asked by Amy 
pre cal
what is the equation to make a heart out of a cardioid?
asked by meghan 
Government
which could a special district provide? A. School Administration B. Park Maintenance C. Police Protection D. All of the above
asked by Alicia 
Physics
The bars representing gravitational potential energy and mechanical energy will increase when you increase the angle. Why?
asked by Jerry Macfadden 
math
Should number theory be taught to grade school children?
asked by Stacey 
math
according to what rule are the numbers arrange 8971012202829?
asked by john 
math
Do you feel that nature influenced the development of geometry? How?
asked by Stacey 
Algebra
I am having problems with inequalities. How can I express this problem as one? Derek has $750 at the start of summer and spends $65 a week for expenses. How many weeks can he withdraw expenses and still have $250 at the end of summer.
asked by Aria 
Maths
Hi, I'm sure I'm doing something wrong here, I'm coming up with an exorbant amount of rainfall for ONE ROOF in a school. Somehow I don't think that in a droughtprone area it is feasable to expect the following to be true. I am unsure where I'm going wrong
asked by URGENT help plz plz plz plz 
Physics
Solar heating takes advantage of solar collectors such as the type shown in the figure . During daylight hours, the average intensity of solar radiation at the top of the atmosphere is about 1400 W/m^2. About 50% of this radiation reaches the Earth during
asked by Alice 
Math
what is the unpaid balance at the end of the 10th year on a 30 year loan on 250000 loan
asked by E 
algebra
b. For the first phase of the project, imagine you want to cover the backyard with decorative rock and plant some trees. You need 30 tons of rock to cover the area. If each ton costs $80 and each tree is $104, what is the maximum number of trees you can
asked by Laverne 
Science
What does that mean? Explain some ways you can decide if a chemical is an element or a compound. Use examples?
asked by Tasha