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Questions Asked on November 17, 2012

13y-x=7 and 7-y/2=x are parallel, neither or perpendicular lines
1. 1 answer
2. asked by Stacey
3. 510 views
20+2x/5-x For what value of x is the rational expression below equal to zero?
1. 2 answers
2. asked by myra
3. 1,684 views
An investor invested a total of $500 in two mutual funds. One fund earned a 8% profit while the other earned a 4% profit. If the
1. 1 answer
2. asked by Samantha
3. 596 views
Two waves in one string are described by the wave functionsy1 = 2.90 cos (3.80x - 1.50t) y2 = 3.90 sin (4.80x - 2.10t) a) where
1. 1 answer
2. asked by Hau
3. 1,747 views
the question is3x to the negative fourth power plus 8 when x equals 2 please help
1. 2 answers
2. asked by kiki
3. 313 views
Use the table to calculate an approximate enthalpy or heat of reaction for the combustion of one mole of methane gas (CH4) to
1. 1 answer
2. asked by Anonymous
3. 896 views
the conversion of old factories for new uses retooling, urban renewal, or urban pioneering? urban renewal?
1. 2 answers
2. asked by Katt13unknownchika
3. 573 views
Three blocks are in contact with each otheron a frictionless horizontal surface. A 417 N horizontal force is applied to the
1. 0 answers
2. asked by alice
3. 1,089 views
he kind of economy that was created in Pittsburgh is calleda. post-industrial. c. post-modern. b. commodity-based. d.
1. 3 answers
2. asked by Katt13unknownchika
3. 743 views
A wave has a speed of 230 m/s and a frequency of 25 Hz. What is its wavelength?
1. 0 answers
2. asked by biq juciy
3. 442 views
Charlie and Peter are driving around a racetrack. Charlie drives at an average speed of 108 miles per hour. Peter drives at an
1. 1 answer
2. asked by Chris
3. 513 views
Three men and three women are waiting to be interviewed for jobs. If they are all selected in random order find the probability
1. 2 answers
2. asked by Katy
3. 6,010 views
Use the table to calculate an approximate enthalpy or heat of reaction for the combustion of one mole of methane gas (CH4) to
1. 1 answer
2. asked by Anonymous
3. 1,207 views
Initially 1.200 mol of an ideal gas in a container occupies a volume of 3.50 l at a pressure of 3.30 atm with an internal energy
1. 0 answers
2. asked by Erika
3. 578 views
A sample containing 4.8g of O2 gas has a volume of 15.0L. Pressure and temperature remain constant.What is the new volume if
1. 2 answers
2. asked by Boo Boo
3. 854 views
One problem encountered by developers of the space shuttle program is air pollution in the area surronding the launch site.
1. 0 answers
2. asked by Allen
3. 846 views
In an assembly line of a factory, which produces networking switching hubs, two robots are utilized. The first one (A) is able
1. 0 answers
2. asked by Marina
3. 431 views
A heat engine operates between two reservoirs at temperatures of 19.7oC and 294oC. What is the maximum efficiency possible for
1. 0 answers
2. asked by Erika
3. 615 views
A penny, a nickel and a dime and a quarter are tossed. What is the probability of obtaining at least three heads?
1. 1 answer
2. asked by Sara Beth
3. 1,186 views
Therese Felser manages a grocery warehouse which encourages volume shopping on the part of its customers. Therese has discovered
1. 0 answers
2. asked by Andrew
3. 386 views
A sample containing 4.8 g of O2 gas has a volume of 15.0L. Pressure and temperature remain constant.What is the volume after
1. 1 answer
2. asked by Boo Boo
3. 574 views
Write each ratio as a fraction in simplest form.5baseballs to 25softballs 1/5? 4tulips to 9daffodils 4/9? 2days out of 8days
1. 5 answers
2. asked by Jerald
3. 524 views
Cross-cultural data find that when racial gaps exist in other cultures, it is the _____________________ groups that typically
1. 1 answer
2. asked by allee
3. 909 views
A block of mass m = 3.6 kg, moving on a frictionless surface with a speed vi=9.3m/s makes a perfectly elastic collision with a
1. 1 answer
2. asked by terry
3. 2,117 views
According to Gardner,a)a single general ability underlies all of our abilities to adapt to our environment. b)intelligence is a
1. 5 answers
2. asked by allee
3. 950 views
Terry often gets lost when driving places. It seems he just can't understand maps and often confuses north with south. Terry is
1. 7 answers
2. asked by allee
3. 1,668 views
Point P is on the rim of a wheel of radius 2.0 m. At time t = 0, the wheel is at rest, and P is on the x axis. The wheel
1. 3 answers
2. asked by terry
3. 2,321 views
To drive a typical car at 40 mph on a level road for one hour requires about 3.2 × 10^7 J of energy. Suppose one tried to store
1. 1 answer
2. asked by terry
3. 1,042 views
A 50 kg uniform ladder, 5.0 m long, is placed against a smooth wall at a height of h = 3.7 m. The base of the ladder rests on a
1. 0 answers
2. asked by jenn
3. 1,282 views
A force in the +y direction applied at the point x=2.3m,y=1.4m gives rise to a torque of 39n*m about the origin. Find the
1. 0 answers
2. asked by jenn
3. 1,214 views
Write each rate as a unit rate14 hours in 2 weeks 7 hours in 1 week? 36 pieces of candy for 6 children 6pieces of candy for 1
1. 5 answers
2. asked by Jerald
3. 2,170 views
The maximum possible efficiency of a heat engine which exhaust its heat at a temperature of 46.0o is 39.0 percent. What is the
1. 0 answers
2. asked by Erika
3. 1,167 views
1.Identify the part, whole, and percent in the following statement: Find 15% of 750. (1 point) part = 750, whole = n, percent =
1. 33 answers
2. asked by Delilah
3. 6,636 views
Three men were walking down a street talking when they met a fourth man. If the fourth man knew that two of the men always lied
1. 1 answer
2. asked by Sara Beth
3. 1,257 views
parking in a student lot costs $1 for the first half hour and $1.25 for each hour there after. a partial hour is charged the
1. 1 answer
2. asked by Anonymous
3. 498 views
If the multiplier is 4, a $10 billion increase in autonomous investment will cause a
1. 0 answers
2. asked by donald
3. 1,040 views
Unpolarized light passes through six successive Polaroid sheets each of whose axis makes a 59 degree angle with the previous
1. 2 answers
2. asked by Lauren
3. 3,886 views
Find the ratio of bananas to oranges. WRite the ratio as a fraction in simplest form. Then explain its meaning.1/3? 1 banana to
1. 3 answers
2. asked by Jerald
3. 2,306 views
Charlie and Peter are driving around a racetrack. Charlie drives at an average speed of 108 miles per hour. Peter drives at an
1. 1 answer
2. asked by Chris
3. 1,053 views
An archaeologist has set up a dig at a newly discovered site. She and her team start excavating an area that is 36 feet by 24
1. 2 answers
2. asked by Chris
3. 438 views
A 5-kg box is released on a 30 degree incline and accelerates down the incline at 2.79 m/s^2. To the nearest tenth of a Newton,
1. 1 answer
2. asked by Danielle
3. 658 views
A piece of copper metal is initially at 100 C. It is dropped into a coffee cup calorimeter containing 50.0 g of water at a
1. 2 answers
2. asked by Natalie
3. 1,256 views
Therese Felser manages a grocery warehouse which encourages volume shopping on the part of its customers. Therese has discovered
1. 1 answer
2. asked by Andrew
3. 433 views
A piece of copper metal is initially at 100 C. It is dropped into a coffee cup calorimeter containing 50.0 g of water at a
1. 1 answer
2. asked by Natalie
3. 2,208 views
Estimate the 4th ionization energy of beryllium (Be). Express your answer in Joules (J/atom).
1. 2 answers
2. asked by hi
3. 539 views
A common laboratory reaction is the neutralization of an acid with a base. When 50.0 mL of the .500 M HCl at 25 C is assed to 50
1. 4 answers
2. asked by Jan
3. 2,962 views
It takes 3.38 J of work to stretch a Hooke’s-lawspring 5.63 cm from its unstressed length. How much the extra work is required
1. 1 answer
2. asked by jason
3. 3,139 views
I don't know the formula to figure this out.Charlie and Peter are driving around a racetrack. Charlie drives at an average speed
1. 1 answer
2. asked by Chris
3. 592 views
A recording camera is located 2500 feet from the launch pad for recording a rocket launch. As the rocket lifts off, the angle of
1. 3 answers
2. asked by BA
3. 576 views
The value of Keq for the equilibriumH2 (g) + I2 (g) ↔ 2 HI (g) is 794 at 25 °C. What is the value of Keq for the equilibrium
1. 2 answers
2. asked by Josh G.
3. 4,469 views
Calculate the pH of a solution at 25.0 °C that contains 1.94 × 10-10 M hydronium ions.
1. 1 answer
2. asked by Josh G.
3. 755 views
29.64acres=-----hectares?
1. 1 answer
2. asked by doris
3. 285 views
A piece of copper metal is initially at 100 C. It is dropped into a coffee cup calorimeter containing 50.0 g of water at a
1. 2 answers
2. asked by Natalie
3. 1,351 views
A piece of copper metal is initially at 100 C. It is dropped into a coffee cup calorimeter containing 50.0 g of water at a
1. 1 answer
2. asked by Natalie
3. 827 views
An outfielder throws a 1.88 kg baseball at aspeed of 57 m/s and an initial angle of 10.2�. What is the kinetic energy of the
1. 1 answer
2. asked by jason
3. 543 views
A cubic centimeter is the same as 1 mL. If a humpback whale has more than 1 kL of blood, how many cubic centimeters of blood
1. 1 answer
2. asked by Mary
3. 763 views
What is magnesium oxide?a. Polyatomic ion b. Ionic compound containing polyatomic ion c. Monatomic ion d. Oxyanion Is the answer
1. 2 answers
2. asked by Anonymous
3. 608 views
NH4NO3(s) NH4+(aq) + NO3−(aq)In order to measure the enthalpy change for this reaction above, 1.07 g of NH4NO3 is dissolved in
1. 3 answers
2. asked by DeeDee
3. 4,324 views
For the function P(t)=765(1.02)^t, what value is t when P(t) exceeds 1000?My answer: t=14
1. 1 answer
2. asked by Anonymous
3. 367 views
A bullet with a mass of 7.11 g and a speedof 774 m/s penetrates a tree horizontally to a depth of 1.85 cm. Assume that a
1. 0 answers
2. asked by jason
3. 425 views
is increase of fish population due to acid rain?!?!?!?1 thanks ♥dino♥
1. 1 answer
2. asked by rawr... im a dinosaur.... rawr
3. 268 views
To help reduce air pollutions legislation had been passeda. stating that all vehicles made after 2015 must contain hybrid
1. 1 answer
2. asked by rawr... im a dinosaur.... rawr
3. 473 views
At a certain hospital, 40 patients have lung cancer, 30 patients smoke, and 25 havelung cancer and smoke. Suppose the hospital
1. 1 answer
2. asked by Sara Beth
3. 658 views
y=arctan(sqrt(9x^2-1))^2dy/dx=?
1. 1 answer
2. asked by Anonymous
3. 357 views
estimate the enthalpy change for each of the following reaction:a) H2C=O(g)+HCl(g .....> H3C-O-Cl(g) b)H2O2(g)+2CO(g).....>
1. 3 answers
2. asked by oluchi
3. 1,528 views
Find the equation of the line that passes through the points (2/3, -5/4)and (-3, -5/6). Write the answer in slope-intercept form
1. 2 answers
2. asked by daniel
3. 527 views
the width in cm of a rectangle is the same as the slope of the line 5x-6y=-14, and its length in cm is the same as the slope of
1. 1 answer
2. asked by daniel
3. 309 views
Calculate the pH of a solution at 25.0 °C that contains 1.94 × 10-10 M hydronium ions.
1. 1 answer
2. asked by JOHN
3. 6,310 views
Identify the regular or irregular verb:John has become or has became a rather good actor. I choose ( has become)
1. 1 answer
2. asked by ALLISON
3. 420 views
Vectors A and B are in the xy plane and their scalar product is 20.6 units.?If A makes a 27.8 angle with the x axis and has
1. 1 answer
2. asked by Emma
3. 947 views
If f(x)=6arcsin(x4), find f'(x).
1. 1 answer
2. asked by Anonymous
3. 325 views
the lenght of a rectangle is one meter more more than two-thirds of the width. Find the length, width and area of the rectangle
1. 1 answer
2. asked by justin
3. 444 views
A uniform rod of length L and mass m initially at rest is struck by a horizontal force F0 a distance x below the pivot O. The
1. 1 answer
2. asked by Jake
3. 758 views
(2/3-5/12)^2+(-5/6-2/3)^2
1. 1 answer
2. asked by justin
3. 535 views
What view of man is Golding presenting in the statement “the rules are the only thing we got?”
1. 0 answers
2. asked by tlofhanu
3. 287 views
Consider a 58.4 g sample of H2O(g) at 125°C. What phase or phases are present when -162 kJ of energy is removed from this
1. 1 answer
2. asked by Sarah
3. 1,038 views
How many grams of solute are in 2.l L of 3.7Moles of Al(NO3)3
1. 1 answer
2. asked by Anonymous
3. 336 views
Suppose the coefficient of static friction between the road and the tires on a Formula One car is 0.7 during a Grand Prix auto
1. 1 answer
2. asked by fadsfads
3. 831 views
y=1/4x+yx=21.5+7y/8
1. 1 answer
2. asked by justin
3. 311 views
The number of arrivals per period is distributed according to the poisson with the expected value of 0.75 unit per period. the
1. 1 answer
2. asked by FRED
3. 1,298 views
lim e^x/sin(11 x)x->0
1. 1 answer
2. asked by Anonymous
3. 353 views
Calculate the percent ionization of nitrous acid in a solution that is 0.311 M in nitrous acid (HNO2) and 0.189 M in potassium
1. 2 answers
2. asked by Josh G.
3. 4,477 views
Given the following reaction at equilibrium, if Kc = 1.90 x 1019 at 25.0 °C, Kp = __________.H2 (g) + Br2 (g) ↔ 2 HBr (g)
1. 2 answers
2. asked by Josh G.
3. 8,606 views
y=x^logbase5(x)
1. 1 answer
2. asked by Anonymous
3. 283 views
14.8cos(27.8)(29cos(x))+14.8sin(27.8)(29sin(x))=22How do you solve for x?
1. 1 answer
2. asked by Emma
3. 465 views
the coordinates of a particle(m/s) in a plane at a given time(t),is 2t,t squared,determine of motion
1. 0 answers
2. asked by oeme
3. 328 views
How many grams of solute are required to prepare 500ml of 0.5M urea solution,CO(NH2)2?
1. 1 answer
2. asked by miah
3. 923 views
The question I have is about chesapeake bay and massy bisects bay. It is basically to see if demographic and economic changes
1. 1 answer
2. asked by Janine
3. 540 views
A chemist has 30%, 40 % and 80 % acid solutions. All three were to be mixed to make 4.00 x 102 L of 38% acid solution but a
1. 1 answer
2. asked by David
3. 467 views
3. Ohm’s law states that the current flowing in a circuit varies directly as the applied voltage and inversely as the
1. 1 answer
2. asked by David
3. 968 views
A farmer is planting a crop straight line with three feet of distance between each plant. If planted 23, what is the distance
1. 2 answers
2. asked by Anonymous
3. 1,113 views
Fig P9 shows a drawbridge being rasied by a cable EI. The structure is a loaded truss consisting of a pinned assembly of
1. 0 answers
2. asked by CHAI
3. 826 views
Find the depth in an ocean at which a bubble of air have one forth the volume as it have on the surface of osean
1. 0 answers
2. asked by Ambika
3. 357 views
Calculate the molarity of 38.5 mL of 1.80 M HNO3 diluted to 0.130 L with water
1. 1 answer
2. asked by Linda
3. 710 views
For the emission spectrum of Be3+, calculate the lowest wavenumber νˉ (in inverse meters) of light produced by electron
1. 3 answers
2. asked by Anonymous
3. 847 views
Length of rectanngle is 1 cm more than width. If length of rectangle is doubled the area is increased by 30cm2. find dimensions
1. 1 answer
2. asked by Dipti
3. 1,072 views
A 0.08425 g sample of gas occupies 10.0-mL at 292.5 K and 1.10 atm. Upon further analysis, the compound is found to be 13.068% C
1. 2 answers
2. asked by Nikki
3. 6,014 views
anton plan that he can throw at a dart board from a distance of 2 meters and hit the 5 centimeters wide bull's eye if he throw
1. 0 answers
2. asked by michaelangelo
3. 587 views
(b) A stone is thrust upwards and reaches a height of s= (73.5t-4.9t2) metres at theend of t seconds. Determine the highest
1. 1 answer
2. asked by Anonymous
3. 395 views
Give the value of the 1st ionization energy of beryllium (Be). Express your answer in Joules (J/atom).
1. 2 answers
2. asked by hi
3. 594 views

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