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2012
April

Questions Asked on April 22, 2012

the population of Canadian city is modeled by P(t)= 12t^2 + 800t + 40,00, where t is the time in years. when t=0, the year is
1. 2 answers
2. asked by kennisha
3. 8,640 views
an athlete executing a long jump leaves the ground at a 28 degree angle and lands 7.6 m away.part a )what was the takeoff speed
1. 1 answer
2. asked by emilia
3. 8,122 views
Extreme-sports enthusiasts have been known to jump off the top of El Capitan, a sheer granite cliff of height 910m in Yosemite
1. 4 answers
2. asked by JOEY
3. 7,842 views
Concrete can be purchased by the cubic yard. How much will it cost to pour a slab 11feet by 11feet by 3inches for a patio if
1. 8 answers
2. asked by lilman
3. 7,543 views
Janet jumps off a high diving platform with a horizontal velocity of 1.73 m/s and lands in the water 1.8 s later.How high is the
1. 2 answers
2. asked by Joe
3. 5,441 views
can you please help me with this oneAt serve, a tennis player aims to hit the ball horizontally. part a)What minimum speed is
1. 5 answers
2. asked by emily
3. 5,254 views
Find sin x/2, cos x/2, and tan x/2 from the given information. (show work please) thank you!!!cos x = − 4/5, 180° < x < 270°
1. 1 answer
2. asked by John
3. 4,204 views
When violet light of wavelength 415 nm falls on a single slit, it creates a central diffraction peak that is 8.80 cm wide on a
1. 7 answers
2. asked by ####Nadine####
3. 4,033 views
At serve, a tennis player aims to hit the ball horizontally.part a)What minimum speed is required for the ball to clear the
1. 2 answers
2. asked by clarissa
3. 3,930 views
a steel ball weighing 128 lb is suspended from a spring, whereupon the spring is stretched 2 ft from its natural length. the
1. 2 answers
2. asked by anisah
3. 2,289 views
find the product by using distributive property 241*107
1. 6 answers
2. asked by Anonymous
3. 2,231 views
a bakery makes both cakes and cookies. each batch of cakes reqire 2 hours in the oven and 3 hours in the decorating room. each
1. 1 answer
2. asked by Gracy
3. 2,137 views
The vector v has a magnitude of 89.7 feet and a direction of12(degree sign)48'. find the magnitude of its vertical component a:
1. 3 answers
2. asked by Some1 Help Me Plz
3. 1,957 views
How much heat is required to warm 229 g of ice from -45.3°C to 0.0°C, melt the ice, warm the water from 0.0°C to 100.0°C,
1. 1 answer
2. asked by Skrillex
3. 1,896 views
A circular pool with a diameter of 32 feet is surrounded by a wood deck of uniform width.If the area of the deck is 68π square
1. 2 answers
2. asked by punk480
3. 1,841 views
find an ordered pair to represent vector u in u = (3/4)w-2v if vector w = <-2/3,4> and vector v = <3/8,-2>How do i do this?
1. 2 answers
2. asked by Tabby
3. 1,803 views
Put parentheses around the prepositional phrases. Identify the subject, verb, and any complements (direct object, indirect
1. 2 answers
2. asked by Monica
3. 1,783 views
How does carbon dioxide emissions from factories, cars and trucks effect global warming?How does methane released from landfills
1. 11 answers
2. asked by Henry
3. 1,638 views
A project has an expected duration of 34 weeks with a critical path variance of 6. Suppose the project network is given and the
1. 1 answer
2. asked by kathy
3. 1,627 views
The angular speed of a larger pulley wheel (radius=15cm) is 50 rev./min. Find the angular speed of the smaller wheel
1. 2 answers
2. asked by Mary
3. 1,616 views
I am still getting the wrong answrs, can you please do me a favor and for each part list the formulas and steps i need to do in
1. 4 answers
2. asked by Clarissa
3. 1,608 views
tanx= -12/5 x in quadrant 2find; sin2x= cos2x= tan2x=
1. 1 answer
2. asked by Adam
3. 1,573 views
If a buffer solution is 0.190 M in a weak acid (Ka = 5.8 x 10^-5) and 0.550 M in its conjugate base, what is the pH?What if it
1. 2 answers
2. asked by Katherine
3. 1,504 views
A parallel plate capacitor has area of 2cm^2 and a plate separation of 1mm. Find capacitance.
1. 1 answer
2. asked by Anonymous
3. 1,474 views
If a projectile is fired straight upward from the ground with an inital speed of 96 feet per second, then its height (h) in feet
1. 1 answer
2. asked by Ralph
3. 1,463 views
write MN as the sum of unit vectors for M(-3/4, 5, 2/3) and N(6, -9, 3/5).Someone help me please?
1. 2 answers
2. asked by Tabby
3. 1,427 views
You are working as an assistant to the dean of institutional research at your university. She wants to survey members of the
1. 1 answer
2. asked by Julie Ann
3. 1,406 views
Denise poured milk into a glass shaped like a right circular cylinder with a radius of 2 inches. When she added chocolate syrup
1. 3 answers
2. asked by Slacker
3. 1,390 views
Title of the worksheet - What is the structure and function of our skeletal system?B. Identify three bones that protect internal
1. 3 answers
2. asked by Laruen
3. 1,350 views
A chemist wants to be a supercook and wants to create 8%(m/v) acetic acud solution to be "extra strength" vinegar. if pure
1. 1 answer
2. asked by Kate
3. 1,343 views
Effects of global warming due to methane gases from land fills and animals?Effects of global warming due to carbon dioxide from
1. 1 answer
2. asked by Henry
3. 1,326 views
Every morning, I drive to work; as I get closer I can hear the cadence calling of all the basic training units on Fort Benning,
1. 3 answers
2. asked by NICK Exemplification Essy
3. 1,285 views
Yes, it's correct. Thank you very much.I urgently need you to check this paragraph. 1) Here below you can find the list of the
1. 1 answer
2. asked by Mike1
3. 1,266 views
If you filled up three balloons with equal volumes of hydrogen, argon, and carbon dioxide gas all at the same temperature and
1. 1 answer
2. asked by akboyer31
3. 1,261 views
use the binomial theorem to expand the binomial(x+5)^5 I have tried it like 4 times but i cannot get it right
1. 1 answer
2. asked by ashley
3. 1,232 views
ms. sue i have to write two paragraphs one in which i just say what type writer i be and the other one be explaining what type
1. 3 answers
2. asked by Mohammad
3. 1,232 views
Five ways in which you critically discuss how life style\behaviour disease impact on the teenager?
1. 3 answers
2. asked by vuledzani matsobane
3. 1,207 views
A scuba diver has an air tank with a volume of 0.010 m^3. The air in the tank is initially at a pressure of 1.0x10^7 Pa. Assume
1. 0 answers
2. asked by Amy
3. 1,181 views
An electron enters the region of a uniform electric field, with v1=3*10^6 m/s and E=200N/C. The horizontal length of the plates
1. 1 answer
2. asked by Tsoanelo
3. 1,170 views
What are the enthalpy, entropy, and free energy for the hydrogenation of ethene (C2H4) to ethane (C2H6) at 25 degrees. Is this a
1. 1 answer
2. asked by anonymous
3. 1,153 views
A passenger in a moving car and a passerby standing at the road side see each other as moving in the opposite direction. Which
1. 1 answer
2. asked by eze1111
3. 1,152 views
ABCD is a quadrilateral in which AB parallel DC and AD=BC.prove that (1)angle A + angle C =180 degree = angle B + angle D
1. 0 answers
2. asked by majumder
3. 1,140 views
A 1.55 kg mass attached to a spring oscillates with a period of 0.375 s and an amplitude of 16.5 cm.Find the total mechanical
1. 0 answers
2. asked by Alex
3. 1,107 views
What does a negative E cell indicate about a redox reaction?What does is indicate about the reverse reaction?
1. 1 answer
2. asked by anonymous
3. 1,105 views
Cancer Describe life style disease \ behaviour and explain 5 factors that contribute to the disease
1. 2 answers
2. asked by vuledzani
3. 1,096 views
Which techniques would you use if you were trying to detect the presence of a protein?Which techniques would you use to detect
1. 0 answers
2. asked by endo
3. 1,090 views
meg has 20 pet stickers to go on a page1/4of them are dog stickers 1/2of them are cat stickers the rest are rabbit stickers how
1. 1 answer
2. asked by jack
3. 1,078 views
A ball of mass 0.2kg falls from a height of 45m. On striking the ground it rebounds in 0.1s with two-thirds of the velocity with
1. 2 answers
2. asked by Moriam
3. 1,066 views
The value of a $20,000 car decreases every, t. The equation below model this situation.20,000(1-0.04t) = 13,000 How many years
1. 0 answers
2. asked by Jane
3. 1,047 views
A 2.11 cm high insect is 1.31 m from a 125 mm focal-length lens. Where is the image?Distance of the image is ? How high is it?
1. 0 answers
2. asked by ####Nadine####
3. 1,046 views
The balloon contains 0.30 {\rm mol} of helium starts at a pressure of 115 {\rm kPa} and rises to an altitude where the pressure
1. 1 answer
2. asked by George
3. 1,033 views
gov. increases expenditures by $100 billon and marginal propensity to consume is 0.50 by how much will equilibrium gdp charge
1. 0 answers
2. asked by dixie
3. 1,031 views
Five ways in which the human or environmental problem impacts on the community
1. 1 answer
2. asked by kidibone
3. 1,026 views
The interatomic spacing in a crystal of table salt is 0.281 nm. This crystal is being studied in a neutron diffraction
1. 1 answer
2. asked by Matt
3. 1,021 views
The function h(t)=-16t^2+100t+300 gives the height in feet of a projectile fired from the top of a building in t seconds.A) When
1. 1 answer
2. asked by Ralph
3. 1,001 views
Radio waves are electromagnetic waves that travel at a speed of 3.00 108 m/s, the speed of light. An AM radio station has an
1. 2 answers
2. asked by Alex
3. 996 views
You helped me with this question earlier today, the answer you got was incorrect, i tried looking through your calculations but
1. 3 answers
2. asked by JOEY
3. 979 views
a compound is made up of iron and oxygen, only. the ratio of iron ions to oxide ions is 2:3 in this compound. the iupac name for
1. 2 answers
2. asked by Glenn
3. 974 views
find the equation of the circle having center on 3x+y=6 and tangent to both axes
1. 1 answer
2. asked by nyl
3. 957 views
determine the x-intercept of the quadratic functionf(x)= 2x^2+ x-15
1. 1 answer
2. asked by kathy
3. 931 views
can someone tell me how to calculate class width.suppose the number of classes and class widh being 5 and 12 respectively.form a
1. 0 answers
2. asked by PALLAVI
3. 904 views
How do I find a percentile if I only have the mean and sd? ie...what IQ score is associated with the 65th percentile?-mean is
1. 1 answer
2. asked by joey
3. 902 views
find the exact value of the given expression. Thank you!tan(1/2cos^-1(9/10)
1. 2 answers
2. asked by Kim
3. 895 views
Calculate the enthalpy of the reaction2B2H6 + 6O2=2B2O3 +6H2O given the following pertinent information: A. B2O3(s) + 2H2) )g) =
1. 0 answers
2. asked by B
3. 890 views
Identify 1 environmental factor or human factor that cause ill healthy within your community withn south africa.in 10-15 lines
1. 12 answers
2. asked by Zandile
3. 885 views
At serve, a tennis player aims to hit the ball horizontally.part a)What minimum speed is required for the ball to clear the
1. 1 answer
2. asked by Clarrissa
3. 885 views
(a) Explain what is meant by a weak acid.Methanoic acid (HCO2H) has a numerical value of Ka(T) at 298K of 1.60 × 10-4 (b) Write
1. 2 answers
2. asked by Henry
3. 879 views
Given the increase in government expenditures and the marginal propensity to consume, how would you find the change in
1. 0 answers
2. asked by Hannah
3. 875 views
N2(g) + 3 F2(g) → 2 NF3(g) ΔH° = –264 kJ/mol ΔS° = –278 J/(mol∙K)a. calculate the maximum amount of non-PΔV work
1. 1 answer
2. asked by chamy
3. 875 views
What is the angular speed in radians per second of the hour hand of a clock? If the hand is 5cm long, how fast is the tip moving
1. 1 answer
2. asked by Sonya
3. 875 views
Make an Maplet that does the simple calculator funtions as addition, subtraction, multiplication, division, factorial, sin(),
1. 0 answers
2. asked by david
3. 872 views
assume the volume of an idol is 1.0L, if it were solid gold, what mass would the idol have? is playing catch with the idol
1. 3 answers
2. asked by akboyer31
3. 868 views
The ion product Of D2O is 1.35x 10^-15 at 25 degrees C. For a solution to be acidic the PDF must be what?
1. 1 answer
2. asked by court
3. 865 views
Joseph always throws change into a can and takes it out every two weeks. This time it is all nickels and dimes. There are six
1. 2 answers
2. asked by aj
3. 858 views
Ms. Sue I'm REALLY having trouble with those question in my science homework.b. A man has a blood clot in his Femoral artery.
1. 12 answers
2. asked by Laruen
3. 845 views
Find the charge on the capacitor in an LRC series at t = 0.02 sec when L = 0.05 h, R = 2Ohm, C = 0.01 farad. The initial
1. 1 answer
2. asked by Chuck
3. 844 views
A 13 foot ladder is resting against the wall. The bottom is initially 10 feet away from the wall and is being pushed towards the
1. 0 answers
2. asked by Sam
3. 822 views
a steel ball weighing 128 lb is suspended from a spring, whereupon the spring is stretched 2 ft from its natural length. the
1. 1 answer
2. asked by anisah
3. 803 views
A particle has a de Broglie wavelength of 3.30 10-10 m. Then its kinetic energy quadruples. What is the particle's new de
1. 1 answer
2. asked by jason
3. 798 views
Calculate the pH at the equivalence point in titrating 0.110 M solution of sodium hydrogen chromate (NaHCrO4) with 8.0×10−2 M
1. 2 answers
2. asked by Kaitlyn Smith
3. 788 views
Why the scope of social studie education is flexible?
1. 2 answers
2. asked by Hayatuddeen Adamu sani
3. 787 views
A chemist wants to be a supercook and wants to create 8%(m/v) acetic acud solution to be "extra strength" vinegar. if pure
1. 2 answers
2. asked by Kate
3. 780 views
(tan^2x-9)(2cosx+1)=0 Find one period4cos^2x-4cosx+1=0 find all angles and name 8 angles 7sin^2x-22sinx+3=0 find all angles and
1. 7 answers
2. asked by Adam
3. 770 views
I have this reading assignment for Family and Consumer Science. She gave us this packet for notes and to read to answer
1. 2 answers
2. asked by Laruen
3. 769 views
Hexagon A is a regular hexagon. The total length of all the sides of the hexagon is 24 inches. Hexagon A is dilated about its
1. 2 answers
2. asked by jessica
3. 766 views
********* Sorry I post too much question but these are the questions I'm having trouble with, the other questions on my science
1. 1 answer
2. asked by Laruen
3. 763 views
In 10-15 lines critically discuss 5 ways of water pollution what impacts does it have to the community
1. 4 answers
2. asked by Zandile
3. 753 views
When violet light of wavelength 415 nm falls on a single slit, it creates a central diffraction peak that is 8.80 cm wide on a
1. 1 answer
2. asked by ####Nadine####
3. 746 views
HF + NaOH =NaF + H2OWhat will be the pH of a solution produced when 40 mL of 0.25 M HF is titrated with 80 mL of 0.125M NaOH? Ka
1. 2 answers
2. asked by Kristen
3. 734 views
A mass,m of water at 100degree celcius is added to another mass of water ,m at a temperature,t. The reslting temperature of the
1. 0 answers
2. asked by n s k
3. 733 views
In 2006, the population of the country was 32.3 million. This represented an increase in population of 6.5% since 2001. What was
1. 1 answer
2. asked by Anonymous
3. 729 views
I have to write a argment Paper and it is based on Native Americans traditional culture.I don't know it this is a good thesis:
1. 2 answers
2. asked by La
3. 727 views
tanx= -12/5 x in Q 2.find sin2x= cos2x= tan2x=
1. 1 answer
2. asked by Sam
3. 708 views
Enough of a monoprotic acid is dissolved in water to produce a 0.0195 M solution. The pH of the resulting solution is 6.24.
1. 2 answers
2. asked by chem1
3. 704 views
Hydrogen peroxide can be produced in the lab by reacting barium peroxide with hydrochloric acid. another product of the reaction
1. 1 answer
2. asked by akboyer31
3. 689 views
A 2.11 cm high insect is 1.31 m from a -125 mm focal-length lens. Where is the image?Distance of the image is ? How high is it?
1. 3 answers
2. asked by ####Nadine####
3. 674 views
At were the social studies education was introduced?
1. 1 answer
2. asked by Hayatuddeen Adamu sani
3. 671 views
Unit 5 Individual ProjectDeliverable Length: 4-5 body pages, 1 PERT chart, 1 Gantt chart Details: Using your current work
1. 0 answers
2. asked by d
3. 670 views
Use the half-angle formulas to find the exact values. Cosine 165 degrees, Sine 157 degrees 30' and tan pi/8
1. 0 answers
2. asked by Neicey
3. 668 views
An athlete executing a long jump leaves the ground at a 28.0 angle and lands 7.60m away.part a)What was the takeoff speed? part
1. 1 answer
2. asked by emily
3. 656 views

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