Archives
2012
March

Questions Asked on March 24, 2012

cosx/sinxcotx=1
1. 3 answers
2. asked by olivia
3. 517 views
cosx/secx+sinx/cscx=sec^2x-tan^2x
1. 5 answers
2. asked by olivia
3. 721 views
measurdment
1. 2 answers
2. asked by Anonymous
3. 237 views
sin^2x/cosx=sec^2x-1
1. 1 answer
2. asked by Lynn
3. 408 views
1. what is the function of the menstrualcycle? 2. Trace the path of a sperm from the male body? 3. Examine the two small lungs
1. 1 answer
2. asked by Guru
3. 518 views
If you need 3 pounds of fertilizer for 100 square feet of soil, how much do you need for 4 sq.ft.; 6 sq.ft.; 8 sq.ft.?
1. 1 answer
2. asked by Claire
3. 392 views
I can not copy and paste to the board.
1. 7 answers
2. asked by Damon
3. 827 views
which young adult is long-term identitity foreclosure or diffusionA. college graduate who switches majors B.An aspiring chef who
1. 0 answers
2. asked by sarah
3. 435 views
Dean associates certain activities,roles,and traits as being typical for either males or females.His associtions conform to
1. 0 answers
2. asked by sarah
3. 1,192 views
what is the number pattern 17-23-?-18-20-25-21-9-15-16?
1. 2 answers
2. asked by Anonymous
3. 369 views
A child loses his balloon, which rises slowly into the sky. If the balloon is 13 cm in diameter when the child loses it, what is
1. 1 answer
2. asked by sara
3. 490 views
A 12 kg object is at the top of a 41 degree inclined ramp. It is released and it reaches the bottom of the 85 m ramp in 2.3
1. 1 answer
2. asked by G
3. 447 views
5. The success of the blizkrieg depended mainly on superiority ina. nuclear weapons b. naval power c. defense strategy d. mobile
1. 8 answers
2. asked by mysterychicken
3. 1,222 views
Evaluate the expression without using a calculator(show work please)?(sin pi/4 cos pi/6 - sin pi/6 cos pi/4) the answer is
1. 0 answers
2. asked by John
3. 990 views
Young Saul, a budding mctaemhtiaian and printer, is making himself a fake ID. He needs it to say heâ€™s 21. The problem is
1. 1 answer
2. asked by GWPeAYsBnmh
3. 709 views
A hot-air balloon is floating above a straight road. To estimate their height above the ground, the balloonists simultaneously
1. 3 answers
2. asked by John
3. 9,048 views
How would I write 150,783 in words?Is it one hundred fifty thousand seven hundred and eighty three???
1. 2 answers
2. asked by Kim Breed
3. 627 views
If f(x)= {-5x+5x^2 -1<x<0{sin(cx) 0<=x<=2ð To check if f(x) is differentiable at 0, we need to evaluate lim Q(h) when h->0^-.
1. 0 answers
2. asked by Anonymous
3. 365 views
I need to calculate the voltage through the resistor and the voltage through the inductor of an RL series circuit for different
1. 1 answer
2. asked by Heather
3. 690 views
Walt Whitman -- AmericaCentre of equal daughters, equal sons, All, all alike endear'd, grown, ungrown, young or old, Strong,
1. 1 answer
2. asked by Amy
3. 1,217 views
How many moles of nitrogen are needed to produce 1.52 moles of nitrogen (ll) oxide ?N2 + O2 > FeCL3 + 3H20
1. 1 answer
2. asked by jake
3. 885 views
please help, thanksSimplify (9^x . 3^4x)^2
1. 1 answer
2. asked by calculus
3. 275 views
At 298 K, 1.35 mol BrCl(g) is introduced into a 12.0 L vessel, and equilibrium is established in the reaction.BrCl(g)-->0.5Br2(g
1. 3 answers
2. asked by ian
3. 873 views
solve the system2x-3y-z=-8 x-y--z=-2 -4x+3y+z=6
1. 1 answer
2. asked by martha
3. 425 views
A 3.00- flask is filled with gaseous ammonia, . The gas pressure measured at 28.0 is 2.35 . Assuming ideal gas behavior, how
1. 1 answer
2. asked by chris
3. 462 views
A 3.00- flask is filled with gaseous ammonia, . The gas pressure measured at 28.0 is 2.35 . Assuming ideal gas behavior, how
1. 0 answers
2. asked by chris
3. 538 views
Find the area of a triangle with sides of length 5 and 8 and included angle 74°. (Round your answer to one decimal place.)
1. 1 answer
2. asked by Kelvin
3. 1,299 views
i need help with this quetionWhat dose it mean work in a psitive and courteous manner and why is this important for
1. 1 answer
2. asked by lisa
3. 334 views
Find the values of the trigonometric functions of è from the information given.(sin è, cos è, csc è, sec è, cot è) tan è
1. 0 answers
2. asked by Kelvin
3. 541 views
what is the correct procedure to deal with resource shortage
1. 2 answers
2. asked by lisa
3. 337 views
Question #1The price of 7 citrons and 10 fragrant wood apples is 88 units. The price of 10 citrons and 7 fragrant wood apples is
1. 3 answers
2. asked by Jay
3. 6,379 views
Compound interest question:When Aaron invested $100 at 4.5% p.a. annually compounding, it amounted to $142.21. For how many
1. 1 answer
2. asked by CrissyXD
3. 454 views
A motorcyclist increases her speed along a straight road from 0 to 120 km/hr in 5 seconds. How much acceleration does she
1. 1 answer
2. asked by Anonymous
3. 371 views
a ball of mass 4kg is thrown vertically upwards with a velocity of 40m/s.Finda-maximum height b-height after 3 seconds c-time of
1. 1 answer
2. asked by heather
3. 724 views
2cos^2a*cos^2b+2sin^asin^b-1=cos2acos2b how to prove it
1. 2 answers
2. asked by A.L
3. 376 views
Two hooks A and B are fixed to a ceiling, where AB is 2.5 m. A small object of mass 3 kg is suspended from A and B by two light
1. 1 answer
2. asked by John
3. 1,031 views
A 53 mL sample of a solution of sulfuric acidis neutralized by 37 mL of a 0.18 M sodium hydroxide solution. Calculate the
1. 1 answer
2. asked by Chemistry
3. 517 views
the heights of 1000 students in a college are normally distributed with a mean 5'10" and a SD of 2". Use 68% for the region from
1. 1 answer
2. asked by Jon
3. 420 views
What is the mass in kg of 20.0 L of diesel fuel? Assume the fuel has a density of 0.85 g/mL.
1. 1 answer
2. asked by Hannah
3. 1,029 views
A particular reactant decomposes with a half-life of 103 s when its initial concentration is 0.397 M. The same reactant
1. 0 answers
2. asked by katie
3. 487 views
Which is the closest to the speed of sound in air?A. 7miles per hour B. 70miles per hour C. 700miles per hour D. 7000miles per
1. 1 answer
2. asked by Derrick
3. 1,134 views
Give specific examples of at least two (2) production and two (2) consumption habits humans have related to material resources.
1. 5 answers
2. asked by Amanda
3. 447 views
For a particular mass of gas, the volume (Vcm^3) and pressure (Pcm) of mecury (Hg) are related by P=kV^n, where k and n are
1. 0 answers
2. asked by José
3. 417 views
For a particular mass of gas, the volume (Vcm^3) and pressure (Pcm) of mecury (Hg) are related by P=kV^n, where k and n are
1. 0 answers
2. asked by José
3. 384 views
Help with doing a powerpoint presentation with show the Four Functions or management with Ethics
1. 1 answer
2. asked by Lori
3. 470 views
Write the chemical formula for the simplest heptane isomer and give its name, b) give the names of two heptane isomers with
1. 1 answer
2. asked by Hannah
3. 627 views
Verify only working with one side:cos^2x + tan^2x cos^2x = 1
1. 2 answers
2. asked by Britney
3. 366 views
If you have 21 questions and you miss 2 whats your score? How do you find out?
1. 3 answers
2. asked by Josh
3. 406 views
There are are 20% more girls than boys in the senior class.What percentage of the seniors are girls?
1. 5 answers
2. asked by Shambhavi
3. 1,126 views
Seven students took a quiz. Four of these students received a score above 85 percent. Students who received at least an 85
1. 2 answers
2. asked by Anonymous
3. 949 views
Sin^2x-1=-cos^2x
1. 1 answer
2. asked by Britney
3. 504 views
If you have a tank containing 10,000L of water. what weight of CaSO4.H2O must be added to math the Ca+ concentration of 130ppm
1. 1 answer
2. asked by Jenn
3. 352 views
What is an AA curve?
1. 1 answer
2. asked by Nancy
3. 594 views
The data was obtained from car crash experiments. The table values are the chest deceleration data (g) for the dummy in the
1. 1 answer
2. asked by EXHAUSTED ON MATH
3. 670 views
2cos^2a*cos^2b+2sin^2asin^2b-1=cos2acos2b
1. 0 answers
2. asked by A.L
3. 394 views
Our eyes are sensitive to electromagnetic radiation with wavelengths from 400nm to 700nm. What is associated range of
1. 2 answers
2. asked by chi
3. 665 views
i'm having trouble with probability and the binomial thm, could i get a good website with problems
1. 0 answers
2. asked by joe
3. 463 views
A particular reactant decomposes with a half-life of 103 s when its initial concentration is 0.397 M. The same reactant
1. 0 answers
2. asked by katie
3. 1,062 views
A ball of circumference 71.5 cm and mass 640 g is forced to the bottom of a swimming pool and then released. After initially
1. 3 answers
2. asked by sara
3. 902 views
Jiskha is not the place to run a survey.Please use http://answers.yahoo.com or something similar for this purpose.
1. 0 answers
2. asked by Writeacher
3. 468 views
1) The approximate pH of a 3.0 X 10^-3 M solution of the strong acid H2SO4 is?I did pH= -log(3.0 X 10^-3) = 2.5 2)If HCLO2 is a
1. 2 answers
2. asked by Hannah
3. 586 views
A book is on top of a table. Earth's gravity exerts a constant force of 15N on the book. Why does the book not move as a result
1. 2 answers
2. asked by Josie
3. 628 views
The level of water in a clear, colorless glass is easily observed with the naked eye. The level of liquid helium in a clear
1. 0 answers
2. asked by chi
3. 784 views
A triangle where the base is a square: what is the volume using 8inches,10inches, and 4inches
1. 1 answer
2. asked by Shannon
3. 341 views
An object is traveling in a straight line in space.No forces are affecting it. What will happen to the object's motion?
1. 2 answers
2. asked by Josie
3. 1,572 views
For water n(red)= 2.332 and n(blue)=1.340. What are the underwater angles of refraction for the red and blue components of a
1. 0 answers
2. asked by chi
3. 455 views
solve for x givene^(2x)-2e^x+1=0
1. 0 answers
2. asked by musuma
3. 238 views
For a piece of glass n(red)= 1.635 and n(blue)= 1.689. The respective wavelengths are 680nm (red) and 430nm (blue). Find the
1. 0 answers
2. asked by chi
3. 528 views
The portion of a swimming pool that is below the full water line measures 12 feet by 30 feet by 6 feet deep. what is the volume
1. 2 answers
2. asked by Anonymous
3. 693 views
The following reaction is a single-step, bimolecular reaction:CH3Br + NaOH --> CH3OH + NaBr When the concentrations of CH3Br and
1. 0 answers
2. asked by katie
3. 1,021 views
A certain reaction has an activation energy of 74.38 kJ/mol. At what Kelvin temperature will the reaction proceed 7.00 times
1. 1 answer
2. asked by HELP PLEASE
3. 534 views
I read the story from behind the veil, but did not really understand could someone help me describe some aspects of its setting
1. 1 answer
2. asked by kevin
3. 1,033 views
A certain reaction has an activation energy of 74.38 kJ/mol. At what Kelvin temperature will the reaction proceed 7.00 times
1. 1 answer
2. asked by HELP PLEASE
3. 726 views
A mass of .27 kg is attached to a spring and is set into vibration with a period of .39s.what is the spring?
1. 1 answer
2. asked by Emily
3. 449 views
I need to calculate the voltage through the resistor and the voltage through the inductor of an RL series circuit for different
1. 1 answer
2. asked by Heather
3. 593 views
Find a geometric sequence in which the 6th term is 28 and 10th term is 448
1. 1 answer
2. asked by shadrack
3. 705 views
Prove: (cotx sinx)(secx-cosx)=sin^2(X)
1. 1 answer
2. asked by Blossom
3. 960 views
A 12 kg object is at the top of a 41 degree inclined ramp. It is released and it reaches the bottom of the 85 m ramp in 2.3
1. 1 answer
2. asked by Armaan
3. 413 views
1. Tai decided to join a group protest of his university’s policies because he felt it was the right thing to do, even though
1. 2 answers
2. asked by Lisa
3. 496 views
A 1-kg mass (the blue mass) is connected to a 9-kg mass (the green mass) by a massless rod 70 cm long, as shown in the figure. A
1. 0 answers
2. asked by deb
3. 555 views
a bag contains 5 blue, 4 red, 9 white, and 6 green marbles. if a marble is drawn at random and replaced 100 times, how many
1. 3 answers
2. asked by toan
3. 1,607 views
A grocery store buys 30 gallons of milk at a cost of $1.58 per gallon. The owner expects a 15% spoilage rate. To achieve a 20%
1. 1 answer
2. asked by Tina
3. 457 views
Find the density of a 4.2- kg solid cylinder that is 13 cm tall with a radius of 5.0 cm.
1. 3 answers
2. asked by jim
3. 449 views
A 19.3- gmass of gold in the form of a cube is 1.00 cmlong on each side (somewhat smaller than a sugar cube).What would be the
1. 0 answers
2. asked by jim
3. 788 views
If nonessential amino acids are missing from the diet, can essential amino acids be substituted in the protein?I would
1. 1 answer
2. asked by Tim
3. 881 views
The total amount of interest on a loan of $6,000 for 150 days is $210.50. Using the ordinary interest method, what is the rate
1. 0 answers
2. asked by Tina
3. 765 views
A $1,000 fave value bond has a remaining maturity of 10 years and a required return of 9%. The bond's coupon rate is 7.4%. What
1. 0 answers
2. asked by angek
3. 495 views
Laurie expects to make $100,000 in 2007. Her social security tax rate is 6.20% up to the wage base, Medicare is 1.45%. How much
1. 0 answers
2. asked by Tina
3. 378 views
What does it mean for a conformation to be more stage than another conformation in terms of the strain energy? Based on your
1. 0 answers
2. asked by cn
3. 501 views
Which of the cyclohexane conformation is more stable? (chair of boat)What factors cause the observed differences in strain
1. 0 answers
2. asked by cn
3. 431 views
Which of the trans-1,4-dimethylcyclohexane is more stable? ("di-axial" or the "di-equitorial")What factors cause the observed
1. 0 answers
2. asked by cn
3. 508 views
I am creating a document for my NHS, and I'm trying to use the § sign properly. Can you please tell me how to do so?
1. 4 answers
2. asked by Mel
3. 360 views
supposed the theoritical yield in a reaction is 68.8g, and the percent yield is 66.0%, what is the actual yield of product
1. 1 answer
2. asked by kims
3. 465 views
Which factor, self-interest or idealism, was more important in driving American foreign policy in the years 1895-1920?
1. 1 answer
2. asked by Sarah
3. 685 views
Describe the political role of the poetry of the 1950s?can anyone give a few pointers on this, thanks!
1. 1 answer
2. asked by help
3. 955 views
Which of these statements is not true about the variance in a binomial distribution B(n, p)? __________A. For a fixed p, the
1. 1 answer
2. asked by Anonymous
3. 2,282 views
Prove (cscx+cotx)(cscx-cotx)=1
1. 0 answers
2. asked by Blossom
3. 728 views
9. What is the general term Freud used to describe the process whereby the mind protects itself against distress? (Points : 1)Co
1. 2 answers
2. asked by Lisa
3. 532 views
I have solved the following questions, let me know if they are correct, thanks.1. Simplify, and write in the base of 3: (9^x .
1. 0 answers
2. asked by help
3. 535 views
A man of mass 83.5 kg walks down the aisle of an airplane at a speed of 1.60 m/s in the forward direction while the plane moves
1. 0 answers
2. asked by Amber
3. 419 views

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