Questions Asked on
May 8, 2011

Chemistry
write the balanced equation for the ionization of the weak base pyridine, C5H5N, in water
asked by Kristin 
maths
Which angle between 0° and 360° has the same cosine as the angle 58°? give your answer as an integer. how do i do this please?
asked by susan 
physics
A 15.0kilogram mass is moving at 7.50 meters per second on a horizontal, frictionless surface. What is the total work that must be done on the mass to increase its speed to 11.5 meters per second?
asked by ashley  HELP PLEASEE!!! 
College Chemistry
H2C=C=CH2 molecule is linear, what are they hybridization states of the carbon atoms? draw diagrams to show sigma and pi bonds.
asked by George 
physics
A child, starting from rest at the top of a playground slide, reaches a speed of 7.0 meters per second at the bottom of the slide. What is the vertical height of the slide? [Neglect friction.]
asked by ashley  HELP PLEASEE!!! 
physics  really dnt get this at all
A small electric motor is used to lift a 0.50kilogram mass at constant speed. If the mass is lifted a vertical distance of 1.5 meters in 5.0 seconds, the average power developed by the motor is
asked by ashley  HELP PLEASEE!!! 
maths
What is the gradient of a line that has an angle of inclination of 75°? Enter the answer, rounded to 4 significant figures in the box below. the answer should be a number. ???
asked by elizabeth 
chemistry
SiH3 planar or pyramidal geometric shape?
asked by George 
Chemistry
what is the sp hybrid orbitals for carbon molecules in CH3C=CCH2OH?
asked by Kimmy 
physics
What total mass must be converted into energy to produce a gamma photon with an energy of 1.03 × 10^–13 joule
asked by ashley  HELP PLEASEE!!! 
College Chemistry
Which of the following ions possess a dipole moment: ClF2+, ClF2, IF2+, or IF4?
asked by Anita 
Physics
A student throws a baseball at a large gong 73 m away and hears the sound of the gong 1.7744 s later. The speed of sound in air is 330 m/s. What was the average speed of the base ball on its way to the gong? (For simplicity, assume its trajectory to be a
asked by Leslie 
Inorganic Chemistry
Which of the following ions possess a dipole moment: ClF2+, ClF2, IF2+, or IF4? Please Help! :)
asked by Anita 
trig
use a half angle formula to find the exact value of cos 75 degree
asked by lan 
Business Calc
Hercules Films is deciding on the price of the video release of its film Bride of the Son of Frankenstein. Marketing estimates that at a price of p dollars, it can sell q = 240,000 − 15,000p copies, but each copy costs $4 to make. What price will give
asked by Angela 
Algebra II
The bear population increases at a rate of 2% per year. There are 1573 bear this year. Write a function that models the bear population. How many bears will there be in 20 years?
asked by Anonymous 
Grammar
Calipers were set and verified at 5 mm. Question: what are all the verbs in the sentence?
asked by Leslie 
College Chem
Calculate the enthalpy of reaction from the standard enthalpies of formation of the reactant and product molecules. 2C2H6+7O2>4CO2+6H20 I am using the back of my book for the standard enthalpies of formation, but cannot seem to find the HoF for C2H6?
asked by Betsie 
Grammar
Another possible diagnosis included pulmonary embolus. Verb/Verbs Answer: diagnosis
asked by Leslie 
Physics
The velocity of the transverse waves produced by an earthquake is 5.08 km/s, while that of the longitudinal waves is 8.3312 km/s. A seismograph records the arrival of the transverse waves 55.9 s after that of the longitudinal waves. How far away was the
asked by Laura 
Grammar
A Superblade was used at the 2 o'clock position and the anterior chamber was entered. Identify the Verb/Verbs Answer: was was entered
asked by Leslie 
physics
A mass 5kg is whirled in a horizontal circle @ 1 end of a string 50cm long,the other end being fixed. If the string when hanging vertically will just support a load of 200kg mass without breaking,find the maximum whirling speed in revolution per second and
asked by Fate 
Math
What is the probability oi rolling a total of 7 in two rolls of a standard die if you get an even number of the first roll? Could someone please help me? Thanks
asked by Ed 
chemistry
How many grams of magnesium oxide are produced when 40 grams of oxygen react with magnesium
asked by jordan 
maths
The mass of a particular substance is known to grow exponentially at a rate of 0.5% per hour. Its initial mass was 25 grams and, after t hours, it weighed 31 grams. The equation modelling this growth is 25×1.005 t = 31. Use the method of taking logs to
asked by Grace 
physics
An actress wears a blue dress. How could you use spotlights to make the dress appear black? I think you could use black spots. Is this right? Thank you.
asked by abster 
trig
Find a numerical value of one trigonometric function of x if secxcotx=4 A.cscx=1/4 b.secx=4 c.secx=1/4 d.cscx=4
asked by lan 
grammar
The patient is alert and oriented and has normal mental status exam. Question: List verb/verbs I know there are two  Answer: is Answer: mental
asked by Leslie 
busieness
questions 2) List the facts that have the most bearing on the decision. 4)Explain what each affected person would want you to do about the issue. 5)List three alternative actions and identify the best and worst case scenario for each alternative, anyone
asked by frank 
Math
S surveyor standing 2277 ft from the base of a building measured a 31 degrees angle to the topmost point. To the nearest ft, how tall is the building?
asked by Khloe 
Grammar
Sentence: The patient had anorexia, though he denied any nausea or vomiting. Verb/Verbs denied ? had (looked it up & said was a verb) Thanks
asked by Leslie 
chem
which of these are strong electrolytes, weak electrolytes and non electrolytes. H2SO4 FeCl2 HClO AgCl I put AgCl as a non H2So4 and HCl as strong FeCl2 as weak but the computer told me my answer is wrong Can some one help please?
asked by william 
Physic
A flywheel rotates with an angular speed of 26 rev/s. As it is brought to rest with a constant acceleration, it turns 55 rev. What is the magnitude of the angular acceleration? How much time does it take to stop?
asked by Maria 
biology
Would you like to help me answers some of my questions in Biology? 1/ Darwin concluded that the most well adapted individuals in a population will leave the most offspring for future generations. This can be considered a measure of an individual's.. a/
asked by jenni 
grammar
Sensory was intact to light touch, proprioception, and pinprick. Question: preposition one for sure is there more? answer: to Question: Conjunctions answer: and Thank You
asked by Leslie 
Chem
Use the following reactions to arrange the elements A, B, C, and D in order of their redox activity, from greatest to least. 2 A + B2+ > 2 A+ + B B + D2+> B2+ + D A+ + C >No reaction 2 C + B2+ > 2 C+ + B Can someone explain? thanks
asked by Rebekah 
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
Find the exact values of the other trig functions of theta given sec theta=7 and sin theta is less than 0.
asked by Nick 
maths
In the year 2000 there were 350 mobile phones users living in the small town of Phoneville. Since 2000 the number of residents using mobile phones has increased by 25% each year, that is, each year the number of mobile phones increases by a factor of 1.25
asked by Stephanie 
Physic
A race car makes two and a half laps around a circular track in 4.5 min. What is the car's average angular speed?
asked by Anonymous 
english
Our two souls therefore, which are one, Though I must go, endure not yet A breach, but an expansion, Like gold to airy thinness beat. If they be two, they are two so [25] As stiff twin compasses are two ; Thy soul, the fix'd foot, makes no show To move,
asked by Alliana 
Education
Writing process teaching strategies used with first language learners are: a. the same for first and second language writers b. effective for second language learners with some modifications c. effective for first language learners only d. effective for
asked by rj 
College Stats
Is .09 less than .05?
asked by Carol 
Physics
A hoop starts from rest at a height 3.0 m above the base of an inclined plane and rolls down under the influence of gravity. What is the linear speed of the hoop's center of mass just as the hoop leaves the incline and rolls onto a horizontal surface?
asked by Anonymous 
stats
use technology to find the Pvalue for a two tailed test with n=28 and a test statistic t=2.032 Pvalue =???? Help please! i don't understand this
asked by ben 
geometry
A triangle has sides 12 ft, 14 ft, and 20 feet. The smallest side of another similar triangle measures 8 ft. What is the perimeter of the smaller triangle.
asked by Mary 
enhancing children's selfesteem
16. The best "measure" that a person has achieved high selfesteem is a. a record of strong academic performance b. confidence in a social situation c. self sufficiency d. strong family relationships 10. When setting guidelines or rules for children and
asked by Beth 
Grammar
He suffered an injury to kis knee, and this is causing him pain and discomfort. Identify Verb/Verbs Answer: is pain discomfort Thanks Sue
asked by Leslie 
Math
If a pizza with a diameter of 12 inches costs $10.99 , based on area, how much should a 15 inch pizza cost?
asked by Angie 
physicsbuoyancy
Use Archimedes' law of buoyancy.  to calculate what fraction of the volume of an iceberg floating in the ocean is above the water level. how many 20kg penguins can be supported by a 1000 cubic meter iceberg that is on the verge of being completely
asked by jen 
Health, Safety, and Nutrition
good dental hygiene for young children is most dependent on: a) regular checkups every 6 months b) use of toothpaste containing fluoride c) proper tooth brushing technique d) elimination of sugars from the diet
asked by Anonymous 
Enhancing childrens selfesteem
6. Most often, who is the most important influence on childrens selfreferent thought? a. Friends b. Teachers c. Themselves d. Family 6. Most often during adolescense, a child is least likely to approach which of the following for support of his or her
asked by Shilo 
pre algebra
Tell weather a triangle with side lengths of 10,24,26 could be 45 45 90 degrees or 30 60 90 degrees. Explain.
asked by Jenny 
life orientation
substance abuse that cause ill health ,accident,crises and disaster in south africa 5 ways in which the human problem impacts on the environment
asked by poelo 
enhancing children's self esteem
5. Of the following who is the most important influence on childrens referent thought? a. Friends b. Teachers c. Themselves d. Family 6. Most often during adolescense, a child is least likely to approach which of the following for support of his or her
asked by Miranda 
Physics
For a scene in a movie, a stunt driver drives a 1.50x10^3 kg SUV with a length of 4.35 m around a circular curve with a radius of curvature of 0.333 km. The vehicle is to be driven off the edge of a gully 10.0 m wide, and land on the other side 2.96 m
asked by Catherine 
Physic
The gravitational forces of the Earth and the Moon are attractive, so there must be a point on a line joining their centers where the gravitational forces on an object cancel. How far is this distance from the Earth's center?
asked by Anonymous 
Phy.
A proton of mass m moving with a speed of 2.5×106 m/s undergoes a headon elastic collision with an alpha particle of mass 4m, which is initially at rest. What is the speed of the proton after the collision?
asked by Brian 
Chemistry (Titration Curves)
Which of the following Acid+Base titration combinations would have a buffering region in their plot? 1)Strong Acid+Strong base (HCl+NaOH) 2)Weak acid and strong base (Acetic+NaOH) 3)Strong Acid and weak base (HCl+NH3) 4)Weak Acid and weak base (Acetic+NH3)
asked by Anonymous 
Physiology
How might the following affect blood volume (increase or decrease) (note: refer to physiology of kidney): High protein concentration in blood plasma Secretion of ADH Reninangiotensinaldosterone ANF (atrial natriuretic factor)
asked by ivy 
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 Maria 
Education
Which of the following statements best describes the instructional level achieved in an Informal Reading Inventory a. the student is unable to read a text b. the student can read a text without much assistance c. the student can read a text with assistance
asked by rj 
English
Could you please let me know which alternatives are best? I really need to know which ones I should use, especially in question 6. Thank you. 1) Next summer I'm going on holiday from 7 July to 27 July. We are going to spend two weeks on Malta. 2) My famiy
asked by Henry1 
Chemistry
What is the pH, pOH [OH] and [H+] for 0.000535 M hydrosulfuric acid?
asked by Chris 
Physic
Just an instant before reaching the very bottom of a semicircular section of a roller coaster ride, the automatic emergency brake inadvertently goes on. Assume the car has a total mass of 850 kg, the radius of that section of the track is 53.0 m, and the
asked by Jason 
calculus
Quadratic function written in standard form where a, b, and c are constants such that a is not zero. f(x)= ax^2+bx+c Using calculus find the vertex of the parabola formed by this quadratic function. Determine under what conditions this vertex is a maximum
asked by Janet 
SAT
For the SAT online course, when I was going o buy it, they asked for shipping information, so I'm confused... are they going to send me a book on the online course where afterwards I can use the online course...?
asked by Amy~ 
FRENCH
1.Quand tu voyages, estce que tu achetes beaucoup de cartes postales? Quand je voyage, je n'achete beaucoup de cartes postales. 1. Astu passe une journee dans une ferme? Si oui, ou> Non, je ne passe une journee dans une ferme. 3. Estce que tu aimes
asked by Sydney 
Life orientations
Name two institutions/community organisations that are involved in supporting or giving redress teenage pregnancy.Explain how these organizations are involved in providing a safe and healthy environment
asked by Kenosi 
Physics Ques.
In nuclear reactors, subatomic particles called neutrons are slowed down by allowing them to collide with the atoms of a moderator material, such as carbon atoms, which are 12 times as massive as neutrons. If the neutron has an initial speed of 1.0×107
asked by Brian 
Chemistry
HC2H3O2 + CH3(CH2)4OH (H2SO4)=?
asked by Sandy 
Chemistry
Which of these is more efficient on a large/small scale (power generation) and why? burning hydrogen to generate heat to drive turbines to produce electricity or directly producing electricity in a fuel cell reaction Can hydrogen be piped into homes,
asked by Alicia 
maths
The chance of getting a particular disease sometime during your lifetime is estimated at 1 in 20. Smoking increases the risk of developing the disease during your lifetime by 20%. How many people out of a group of 1000 smokers would you expect to get the
asked by Beth 
math
use technology to find the Pvalue for a two tailed test with n=28 and a test statistic t=2.032 Pvalue =???? Help please! i don't understand this
asked by jessica 
trig
if sec theta=5/4 and 180degree < theta< 270degree, find tan theta a.3/5 b 4/5 c.3/4 d.3/5
asked by minh 
physics
You are in a dark room with a single incandescent 60W bulb in the center of the ceiling. You hold a book directly beneath the bulb and begin lowering it toward the floor. As the book is lowered, what happens to the size of the umbra? I believe it stays the
asked by abster 
Physics
A 180 kg object is taken to a height of 350 km above the Earth's surface. The object's mass of height is 180 kg. What is the object's weight at this height?
asked by Katie 
environment
Ways in which the human or environment problem impacts on the community
asked by pearl 
chemistry
A 250cm^ solution is prepared by dissolvin 8.0g of sodium hydroxide in distilled water.calculate the concentration of this solution
asked by lesedi 
math  8th grade
I have a table to complete.Given that points A and B belong to a circle with centre O; If the area of the sector bounded by central angle AOB is 14.13cm squared and the measure of central angle AOB=45cm squared. What is the radius of the disk(cm)and what
asked by Br 
Chemistry
Besides creating less pollution, what is another reason hydrogen based fuel for cars would be a a better alternative than the fuel we use today?
asked by Keren 
Chemistry
What if sodium iodide, sodium iodate, and sulfuric acid were mixed with a small amount of 1,2 dichloroethane? With hexane?
asked by Hillary 
Science
how do i balance this equation? Ca + O2 > CaO can you also explain to me how you got the answer?
asked by Rebecca 
physics
A man jogs along at 1.2 m/s. His dog, playing 36 m behind him, waits for 5 s, then takes off after him at 3.1 m/s. How far apart are they when the dog starts after his master? Answer in units of m. If the man continues jogging, how long will the dog have
asked by Laura 
Algebra
i need help to SOLVE THE EQUATION FOR X. 8b+2x=6x4a
asked by Anonymous 
science
currents move to the deep ocean because of differences in what?
asked by Anonymous 
English
I left out the following sentences. Thank you very much. It is really urgent!! 1) Where are you going to have a holiday next summer? 2) I'm going to stay there for (is for necessary in writing?) two weeks with my family. 3) I'm going to visit many cities
asked by Henry1 
english
what is a possessive pronoun that could replace these words 1.Martha Katz's (before a noun) 1.Martha Katz's ( not before a Noun)
asked by ephrem 
physics
Zircon is sometimes used to make fake diamonds. What is its index of refraction if the speed of light in zircon is 1.6 x 10^8 m/s. Please show all work Thank you.
asked by abster 
algebra 2
Is 1/2 sin 2x the same expression as sin x? Justify your answer.
asked by someone 
Physics
A 669 g sample of water at 83 degrees celsius is mixed with 486 g of water at 23 degrees celsius. What is the final temperature of the mixture? Assume no heat loss to the surroundings.
asked by Maria 
poem
How do the differences and/or similarities between speech and poetic form affect the experience "In Memoriam"
asked by Louis 
English
Could you please check these sentences on a school trip? Thank you very much. 1) Next summer I'm going on holiday from 7 July to 27 July (from "the" 7 to "the" 27 of July ?). We are going to spend two weeks on Malta. 2) My famiy and I are leaving on the
asked by Henry1 
science
what is the height of a rock wall that is casting a 10ft shadow if a 6 ft bird watcher is casting a 14 ft shawdow
asked by sophia 
Economics
In a period of inflation, does the exchange of goods and services speed up or slow down? Thanks
asked by David 
physics
a)Estimate how long it takes for the cold air to fall out when you open the door of your refrigerator. For simplicity, assume your fridge is a cube of height 1 meter, and that the cold air inside is 5% denser than the warm air outside. Imagine that you
asked by bobby 
trig
A right triangle has sides of length 5, 12 and 13. What is the sine of the angle opposite the hypotenuse? (A) 1 (B) 5/12 (C) 5/13 (D) 12/13 (E) None of the above.
asked by lan 
maths
A sample of 25users of a gym had their oxygen consumption measured for 30 minutes after arunning exercise.The sample mean and sample standard deviation of the oxygen consumption,in millilitres per kilogram of body weight per minute, were 24.1 and 18.7,
asked by olek 
chemistry
how can i know whether solution is acidic or not and then what type of acid?
asked by khin 
maths
The number of vehicles entering each of 15 junctions from a motorway during a 20minute period on a Sunday morning is given below. 7 26 30 26 19 22 12 30 8 28 8 15 26 32 4 1 Choose the option that gives the median number of vehicles entering a junction.
asked by olek 
pyscology
How does nuture effect adult develpoment?
asked by Talia 
AlgebraPlease help
We're working on geometric and athrimetic series and I really don't know where to start with this except that t sub 1 = 101 How would I find the sum of the multiples of 5 between 101 and 2001 help
asked by Anna 
Physics
Sorry for reposting this but I'm still confused with the last part... 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
asked by Catherine 
math
Convert to Fahreheit. ust the formula F=9/5*C+32 90degreeC = what degree F
asked by Anonymous 
math
Find the general solution using the method of undetermined coefficients. y'''  10y'' + 25y' = e^(x) cos x + e^(5x) + x.
asked by Shane 
physics
Does the resonance position change as the length of the tube changes, for example a longer tube?
asked by Jenny 
physics
suppose you apply 3 newtons of force to slide a box 2 meters in 6 seconds, how much work did you do?
asked by Anonymous 
trig
If csc(x) =1/sqrt7 then sec(x) equals (A)p7/7 (B) 6/7 (C)p6/p7 (D)p7 (E) None of the above.
asked by lan 
spelling
how do you spell tedeetawter? im probably butchering the spelling XD
asked by Jim 
medical coding
single braces are used in the tabular list to A. connect terms on both sides of the braces. B. include nonessential modifiers and alternative codes. C. indicate fifth digits required with a code. D. connect a series of terms on the left with one term on
asked by billy 
Maths SUPER URGENT
Hey What size down pipe would I need, and how many if my roof area equals 1224.78 metres squared and I have average rainfall of 173kl per year? Also how much plumbing would I need from my hypothetical tanks?
asked by Lina 
algebra
Find the roots of the equation. 4x to the second power plus 9=12x
asked by Loren 
calculus
Given the function h : x > 3x + c and h^1 : x > cx/m  1, where c and are constants, find the values of c and m
asked by Anonymous 
trig
How many solutions does the equation cos(x) + cos(−x) = 0 have if 0 < x < 2pi? (Radian measure is assumed for x.) (A) infinitely many (B) 1 (C) 2 (D) 3 (E) None of the above.
asked by dat 
Math
What is Schlafli notation? I seriously need to know how basic it is before tomorrow's test?
asked by Salim 
Question abt Conflict
One more question. Cause the conflict was about the land. Did problems take place because of the crops/growing seasons?
asked by Emma 
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 
math
use formula F= 9/5 * c+32 68 degrees C= ? degree F
asked by Anonymous 
social studies
In what ways are NIBRS similar to NCVS
asked by malik 
math
Hosni gave the following argument that (a+b)=a+b for all integers a and b. If the argument is correct, supply the missing reasons. If it is incorrect, explain why. (a+b)=(1)(a+b) =(1)a+(1)b =a+b (a+b)=(1)(a+b)=(1)a+(1)b=(a)+(b)=a+b
asked by Anonymous 
algebra
If there are 5280 feet per mile, how many inches are there in 3 miles?
asked by beth 
Miles Macdonnel
Who was Miles Macdonnel? He was first governor of Red River Colony and had a share in the HBC company. He bought land in the Red River Valley to provide a home for the Scots that were poor, and he didn't want to give any part of the land to the NWC. He
asked by Emma 
college math 201
i have 50 feet of fence and the house will be the fourth side. i want a rectangular fence as big as possible. what re the dimensions?
asked by don 
CHEMISTRY
0.560g of potassium hydroxide is added to 25.0 cm^3 of 1.00 mol dm^3 of hydrochloric acid.Find the limiting reagent & please show the working.THANKS IN ADVANCE.
asked by ALIYAH 
physics
what is the dimensinol formula for accleration amd volume?
asked by narayan 
english (opinion)
SO this guy is going through depression because the job that he does is no longer brings happiness to him any more. He is an activist. One day he sat and thought that if he actually does achieve his goal will he be happy? His answer was no. This made him
asked by Alliana 
algebra math
Use f(x)=0.5(x3)23to find A. f(5)
asked by Tirshana 
finance
insurance matrix, Insurance Matrix Type of Insurance Functions Example of Company Coverage Characteristics Auto Home Health Disability Life what do they mean by the functions
asked by Tracy 
Anthropology
How does the identification of cultural universals impact our understanding of what it means to be human. How does the search for Universals help us better understand human cultural behavior? What examples for out own culture can illustrate the ideas that
asked by shenikka Turner 
trig
In a right triangle the hypotenuse has length 10 and the the sum of the cotangents of all three angles of the triangle equals 2. What are the lengths of the other two sides of the triangle? (A) 5 and 5p3 (B) 5p2 and 5p2 (C) 1 and3 p11 (D) 4 and 2p21 (E)
asked by dat 
Biology
How would you perform a 5 x 10^3 dilution of any culture or chemical reagent?
asked by Page 
Physics
Sorry for reposting this but I'm still confused with the last part... 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
asked by Catherine 
physics
How does the presence of an atmosphere affect the length of day and night? I am thinking by the rising and setting of the moon and sun. Is this right? Thank You.
asked by abster 
chemistry
What physical changes take place within a solid as it melts?
asked by Amy 
Quick Question
Does an Accession number differ from an standard number??*
asked by Willy Wonka 
MATH 7th GRADE
Vicki measured the length of 8 leaves. The lengths were 10 cm, 12 cm, 15 cm, 15 cm, 19 cm, 11 cm, 18 cm, and 15 cm. What is the interquartile range of Vicki's data? answer choices are: a. 1 b. 3 c. 5 d. 6 I chose 5 and it says that 6 is the correct answer.
asked by MATH HELP PLEASE 
maths
The heights in centimetres of men in a sample selected at random may be modelled by a normal distribution with mean 180.5 and standard deviation 11.3. 1 Choose the option that is closest to the value above which 30% of the heights of men will lie. Options
asked by olek 
Chemistry
What is the molarity and normality of 100.3 grams of calcium hydroxide dissolved in 775 ml of water?
asked by Chris 
grammar
you make noise in every period , every day
asked by agastya 
maths
A psychological test was given to 92 teenage boys and 68 teenage girls. The test was used to assign a score to each teenager, measured on the ‘worry scale’–0(not worried) to 100 (very worried).A summary of the results is given in the table below.
asked by olek 
Current Events
Hey! Kayz, so regarding the stance 'that the US should remove political, social and economic support from dictatorships'. So far I'm thinking of adapting the sanctions on South Africa during apartheid for this. I'm also thinking of looking at current
asked by Tina 
Easy maths question
Hey How do I convert 1224.78m squared into mm squared?
asked by Tina 
English
I know that 'you' and 'I' are pronouns but are words like 'you're' and 'I'm still classed as perosnal pronouns? thanks
asked by Kaley 
maths
The distribution of the time taken to run 1000 metres by users of a treadmill in a sports centre has mean 7.2 minutes and standard deviation 2.045 minutes. 1 Choose the option that is closest to the probability that the mean time taken to run 1000 metres
asked by olek 
geometry
The length of each edge of a trianglar tent if 8 ft. ( 3 sides and a bottom) (a) Find the area of each face (b)Find the total surface area of the four faces
asked by Mary 
Geometry
I have 27.75 sq yds of fabric. What would the surface area of my triangular tent be? My teant has 3 sides and a bottom( a total of 4 faces)
asked by Mary 
GEOGRAPHY
I HAVE ALREADY SUBMIT MY QUESTION BUT NO ANSWER HAVEN'T CAME BACK
asked by Delneisha 
trig
A sine wave function f(x) = a sin(bx) has amplitude 10 and period 40. What are the values of a and b? (A) a = 10 and b = 20/pi ( B) a = 10 and b = 1/40 (C) a = 10 and b = pi/20 (D) a = 10 and b = 40 E) None of the above.
asked by dat 
chemistry
If you had 1L of water, how many grams of NaCl will youi need to mix to the water to lower the freezing point by 24 degrees C?
asked by Anonymous 
life orientation
5 ways in which the HIV/AIDS problem impacts on the community
asked by dolley mojapelo 
Algebra
How do you express the sum of 5y3/9 and 2y1/2
asked by beth 
Physic
Consider a 1.8 kg ball and a 5.2 kg ball in free fall. What is the net force acting on each? What is the acceleration of each?
asked by Anonymous 
physicsnuclear reactors
a) Let's assume a nuclear reactor was a completely isolated system, such that no matter particles can escape from it and the only thing that can get out is energy in the form of heat and radiation. If we weigh the whole reactor before switching it on, and
asked by anonymous 
engineering
How is bacteria used in genetic engineering?
asked by john 
trig
Determine the value of cos(theta) given that cos(pi − theta) = .2 (A)p.96 (B) .2 (C) −.2 (D) −sqrt.96 (E) None of the above.
asked by Phuong 
math
Using the readings in Ch. 2 of the text, identify and explain at least one realworld application of algebraic concepts for one of the following areas: business, health and wellness, science, geometry, sports, and environmental sustainability.
asked by Anonymous 
maths
The distribution of the time taken to run 1000 metres by users of a treadmill in a sports centre has mean 7.2 minutes and standard deviation 2.045 minutes. 1 Choose the option that is closest to the probability that the mean time taken to run 1000 metres
asked by olek 
World Literature
In the story Othello, I have to find an example of contrasting worlds. What exactly does contrasting worlds mean? Thank you!
asked by Mswayze 
math
the washing ton monument is 555ft tall. which is closest to its height? i know the answer is 180 but i do not know how to show work for it!!!HELP!!!
asked by Alyssa 
microbiology
What dilutions would have to me made (from a starting concentration of 5 x 10^8 cells per ml) to achieve a final concentration of 1 x 10^3 cells per ml?
asked by Chloe 
enhancing chilfrens self esteem
ThANK YOU MS SUE. It wa a great help thanks again. beth
asked by beth 
algebra
what is 7c9? im so confused, i need help :(
asked by vanessa 
english
Can someone please check my homework for me? · Write two paragraphs about how interest rates affect our purchasing decisions. · Identify the topic sentence in each by underlining it. · Post your paper as an attachment. Interest rates affect the buying
asked by icelocsgirl 
error bound
find the bound on the magnitude of the error if we approximate sqrt 2 using the taylor approximation of degree three for sqrt 1+x about x=0
asked by tony 
project physicis
Hi, I need example of momentum,conservation of momentum and impluse momentum in cricket. Thanks
asked by nick 
arithmetic
need a reinstatement A person hired a firm to build a CB radio tower. The firm charges $100 for labor for the first 10 feet. After that, the cost of the labor for each succeeding 10 feet is $25 more than the preceding 10 feet. That is, the next 10 feet
asked by ernest 
physics
Which of the following does not show a difference between the wave theory and particle theory of light; reflection, refraction, interference, diffraction, or polarization? Thank you.
asked by abster 
math
Find the exact value of the volume of a can of green beans with a diameter 8 centimeters and height of 12 centimeters. Include correct units with your solution. Use "pi" in place of the pi symbol.
asked by kozy 
trig
What is the cotangent of 0 degree? (A) 0 (B) 1 (C) 1/2 (D) −1 (E) None of the above.
asked by Phuong 
business
explain how the results in both quantitative and qualitative analysis are used to recommend moving forward and planning a project?
asked by Anonymous 
physics
what is the dimensinol formula for accleration amd volume?
asked by narayan 
trig
1stthe reason i keep change my name because some of my friends are using my computer by their own name to asked questions. we are having a hard time solving each trig problems 2nd if sin theta=0.6 and 90 degree
asked by minh 
Physics
Sorry for reposting this but I'm still confused with the last part... 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
asked by Catherine 
math
what is 11+17
asked by arman 
verb
how can i find a verb in sentence1) It will be helpful in the future if you plan ahead of time to do some financial planning for your college education
asked by lynnel 
trig
The tangent of an acute angle equals 1/2. What is the sine of the angle? (A) 1/p3 (B)p5/2 (C) 2/p5 (D) 1/p5 ( E) None of the above.
asked by dat 
medical coding
a physician provides an office consultation for a new patient. the history and examination levels are comprehensive and the medical decision making is of high complexity. what is the correct code for this situation? A.99254 B.99244 C.99255 D.99245
asked by billy 
MATH
Of what number is 12 the 25%?
asked by Anonymous 
Economic and management science
Growth employment and redistruction
asked by Thabo 
math
7(5x+8)=12(x+4) simply your answer
asked by Anonymous 
Education
Which of the following would you want to evaluate for a middle school student? a. background knowledge b. word recognition and vocabulary knowledge c. comprehension d. all of the above
asked by rj 
language
please help me to write a poem about friendshi, thanks
asked by reem 
MATH HELP HELP HELP HELP HELP
Does anyone know mathematical ciphers
asked by Dwayne 
social study
what made the hbc and nwc so imortant to this reion
asked by brad 
MATH
Lincoln received $55 on his birthday. If he deposits $22 into his bank account, what is the percentage of the total that Lincoln earned?
asked by Anonymous 
math
High Knob Mountain is 4044 ft. high.What is this distance in meters? a. 6470 m b. 102.8 m c. 1233 m d. 4000 m I did it like this: 1yard=3f,so 4044ft=1348yd. 1yd=0.914m,so it gives 1232.072m Maybe I did something wrong?but it does not match to any answer:(
asked by MaS 
math
7(3x+5)=11(x+9) simply
asked by Anonymous 
math
what is 1/8 + 5/6 + 2/3 reduced
asked by kaylee 
algebra
^ = to the power 1. 8^1/2*8^5/2 2.3^5/3(divided by) 3^2/3 **please show work
asked by SoccerStar 
Math
a + b represents any real number. ^412 sqrt(a+b)^412
asked by Whosthatgirl 
algebra
^ = to the power _________= divided by 3^5/3*3^0 _________ 3^2/3
asked by SoccerStar 
science
what is the chemical equation for sodium nitrate?
asked by ali 
english
does south african revolution value customs.
asked by thabz 
math
9 apples/ 14 students a ratio or a rate ?
asked by me