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November 17, 2012
13y-x=7 and 7-y/2=x are parallel, neither or perpendicular lines
2 answers
asked by
Stacey
497 views
20+2x/5-x For what value of x is the rational expression below equal to zero?
4 answers
asked by
myra
1,666 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
2 answers
asked by
Samantha
584 views
Two waves in one string are described by the wave functions
y1 = 2.90 cos (3.80x - 1.50t) y2 = 3.90 sin (4.80x - 2.10t) a) where
3 answers
asked by
Hau
1,733 views
the question is
3x to the negative fourth power plus 8 when x equals 2 please help
3 answers
asked by
kiki
299 views
Use the table to calculate an approximate enthalpy or heat of reaction for the combustion of one mole of methane gas (CH4) to
2 answers
asked by
Anonymous
881 views
the conversion of old factories for new uses retooling, urban renewal, or urban pioneering? urban renewal?
3 answers
asked by
Katt13unknownchika
560 views
Three blocks are in contact with each other
on a frictionless horizontal surface. A 417 N horizontal force is applied to the
1 answer
asked by
alice
1,080 views
he kind of economy that was created in Pittsburgh is called
a. post-industrial. c. post-modern. b. commodity-based. d.
4 answers
asked by
Katt13unknownchika
732 views
A wave has a speed of 230 m/s and a frequency of 25 Hz. What is its wavelength?
1 answer
asked by
biq juciy
433 views
Charlie and Peter are driving around a racetrack. Charlie drives at an average speed of 108 miles per hour. Peter drives at an
2 answers
asked by
Chris
504 views
Three men and three women are waiting to be interviewed for jobs. If they are all selected in random order find the probability
5 answers
asked by
Katy
5,993 views
Use the table to calculate an approximate enthalpy or heat of reaction for the combustion of one mole of methane gas (CH4) to
2 answers
asked by
Anonymous
1,193 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
2 answers
asked by
Erika
568 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
3 answers
asked by
Boo Boo
840 views
One problem encountered by developers of the space shuttle program is air pollution in the area surronding the launch site.
1 answer
asked by
Allen
836 views
In an assembly line of a factory, which produces networking switching hubs, two robots are utilized. The first one (A) is able
1 answer
asked by
Marina
420 views
A heat engine operates between two reservoirs at temperatures of 19.7oC and 294oC. What is the maximum efficiency possible for
2 answers
asked by
Erika
605 views
A penny, a nickel and a dime and a quarter are tossed. What is the probability of obtaining at least three heads?
2 answers
asked by
Sara Beth
1,176 views
Therese Felser manages a grocery warehouse which encourages volume shopping on the part of its customers. Therese has discovered
1 answer
asked by
Andrew
376 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
2 answers
asked by
Boo Boo
564 views
Write each ratio as a fraction in simplest form.
5baseballs to 25softballs 1/5? 4tulips to 9daffodils 4/9? 2days out of 8days
6 answers
asked by
Jerald
509 views
Cross-cultural data find that when racial gaps exist in other cultures, it is the _____________________ groups that typically
2 answers
asked by
allee
897 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
3 answers
asked by
terry
2,099 views
According to Gardner,
a)a single general ability underlies all of our abilities to adapt to our environment. b)intelligence is a
6 answers
asked by
allee
932 views
Terry often gets lost when driving places. It seems he just can't understand maps and often confuses north with south. Terry is
7 answers
asked by
allee
1,643 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
5 answers
asked by
terry
2,298 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
3 answers
asked by
terry
1,024 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 answer
asked by
jenn
1,271 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 answer
asked by
jenn
1,198 views
Write each rate as a unit rate
14 hours in 2 weeks 7 hours in 1 week? 36 pieces of candy for 6 children 6pieces of candy for 1
6 answers
asked by
Jerald
2,150 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 answer
asked by
Erika
1,157 views
1.
Identify the part, whole, and percent in the following statement: Find 15% of 750. (1 point) part = 750, whole = n, percent =
33 answers
asked by
Delilah
6,577 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
2 answers
asked by
Sara Beth
1,250 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 answer
asked by
Anonymous
490 views
If the multiplier is 4, a $10 billion increase in autonomous investment will cause a
1 answer
asked by
donald
1,032 views
Unpolarized light passes through six successive Polaroid sheets each of whose axis makes a 59 degree angle with the previous
5 answers
asked by
Lauren
3,867 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
4 answers
asked by
Jerald
2,286 views
Charlie and Peter are driving around a racetrack. Charlie drives at an average speed of 108 miles per hour. Peter drives at an
2 answers
asked by
Chris
1,042 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
3 answers
asked by
Chris
424 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,
2 answers
asked by
Danielle
650 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
3 answers
asked by
Natalie
1,245 views
Therese Felser manages a grocery warehouse which encourages volume shopping on the part of its customers. Therese has discovered
3 answers
asked by
Andrew
422 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
3 answers
asked by
Natalie
2,196 views
Estimate the 4th ionization energy of beryllium (Be). Express your answer in Joules (J/atom).
3 answers
asked by
hi
530 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
5 answers
asked by
Jan
2,938 views
It takes 3.38 J of work to stretch a Hooke’s-law
spring 5.63 cm from its unstressed length. How much the extra work is required
4 answers
asked by
jason
3,086 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
2 answers
asked by
Chris
581 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
4 answers
asked by
BA
558 views
The value of Keq for the equilibrium
H2 (g) + I2 (g) ↔ 2 HI (g) is 794 at 25 °C. What is the value of Keq for the equilibrium
4 answers
asked by
Josh G.
4,458 views
Calculate the pH of a solution at 25.0 °C that contains 1.94 × 10-10 M hydronium ions.
2 answers
asked by
Josh G.
743 views
29.64acres=-----hectares?
1 answer
asked by
doris
278 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
4 answers
asked by
Natalie
1,341 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
2 answers
asked by
Natalie
816 views
An outfielder throws a 1.88 kg baseball at a
speed of 57 m/s and an initial angle of 10.2�. What is the kinetic energy of the
2 answers
asked by
jason
534 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
3 answers
asked by
Mary
755 views
What is magnesium oxide?
a. Polyatomic ion b. Ionic compound containing polyatomic ion c. Monatomic ion d. Oxyanion Is the answer
3 answers
asked by
Anonymous
593 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
4 answers
asked by
DeeDee
4,297 views
For the function P(t)=765(1.02)^t, what value is t when P(t) exceeds 1000?
My answer: t=14
1 answer
asked by
Anonymous
357 views
A bullet with a mass of 7.11 g and a speed
of 774 m/s penetrates a tree horizontally to a depth of 1.85 cm. Assume that a
1 answer
asked by
jason
412 views
is increase of fish population due to acid rain?!?!?!?1 thanks ♥dino♥
1 answer
asked by
rawr... im a dinosaur.... rawr
260 views
To help reduce air pollutions legislation had been passed
a. stating that all vehicles made after 2015 must contain hybrid
1 answer
asked by
rawr... im a dinosaur.... rawr
464 views
At a certain hospital, 40 patients have lung cancer, 30 patients smoke, and 25 have
lung cancer and smoke. Suppose the hospital
2 answers
asked by
Sara Beth
627 views
y=arctan(sqrt(9x^2-1))^2
dy/dx=?
1 answer
asked by
Anonymous
349 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).....>
4 answers
asked by
oluchi
1,511 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
3 answers
asked by
daniel
515 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 answer
asked by
daniel
298 views
Calculate the pH of a solution at 25.0 °C that contains 1.94 × 10-10 M hydronium ions.
4 answers
asked by
JOHN
6,298 views
Identify the regular or irregular verb:John has become or has became a rather good actor. I choose ( has become)
1 answer
asked by
ALLISON
413 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
3 answers
asked by
Emma
935 views
If f(x)=6arcsin(x4), find f'(x).
1 answer
asked by
Anonymous
318 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 answer
asked by
justin
434 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
2 answers
asked by
Jake
750 views
(2/3-5/12)^2+(-5/6-2/3)^2
2 answers
asked by
justin
532 views
What view of man is Golding presenting in the statement “the rules are the only thing we got?”
1 answer
asked by
tlofhanu
280 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
2 answers
asked by
Sarah
1,028 views
How many grams of solute are in 2.l L of 3.7Moles of Al(NO3)3
1 answer
asked by
Anonymous
329 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
2 answers
asked by
fadsfads
822 views
y=1/4x+y
x=21.5+7y/8
1 answer
asked by
justin
304 views
The number of arrivals per period is distributed according to the poisson with the expected value of 0.75 unit per period. the
4 answers
asked by
FRED
1,281 views
lim e^x/sin(11 x)
x->0
1 answer
asked by
Anonymous
346 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
4 answers
asked by
Josh G.
4,456 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)
4 answers
asked by
Josh G.
8,588 views
y=x^logbase5(x)
1 answer
asked by
Anonymous
275 views
14.8cos(27.8)(29cos(x))+14.8sin(27.8)(29sin(x))=22
How do you solve for x?
1 answer
asked by
Emma
454 views
the coordinates of a particle(m/s) in a plane at a given time(t),is 2t,t squared,determine of motion
1 answer
asked by
oeme
319 views
How many grams of solute are required to prepare 500ml of 0.5M urea solution,CO(NH2)2?
2 answers
asked by
miah
910 views
The question I have is about chesapeake bay and massy bisects bay. It is basically to see if demographic and economic changes
1 answer
asked by
Janine
524 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 answer
asked by
David
456 views
3. Ohm’s law states that the current flowing in a circuit varies directly as the applied voltage and inversely as the
2 answers
asked by
David
949 views
A farmer is planting a crop straight line with three feet of distance between each plant. If planted 23, what is the distance
3 answers
asked by
Anonymous
1,098 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 answer
asked by
CHAI
808 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 answer
asked by
Ambika
349 views
Calculate the molarity of 38.5 mL of 1.80 M HNO3 diluted to 0.130 L with water
3 answers
asked by
Linda
696 views
For the emission spectrum of Be3+, calculate the lowest wavenumber νˉ (in inverse meters) of light produced by electron
4 answers
asked by
Anonymous
832 views
Length of rectanngle is 1 cm more than width. If length of rectangle is doubled the area is increased by 30cm2. find dimensions
2 answers
asked by
Dipti
1,058 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
5 answers
asked by
Nikki
5,995 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
2 answers
asked by
michaelangelo
579 views
(b) A stone is thrust upwards and reaches a height of s= (73.5t-4.9t2) metres at the
end of t seconds. Determine the highest
1 answer
asked by
Anonymous
389 views
Give the value of the 1st ionization energy of beryllium (Be). Express your answer in Joules (J/atom).
3 answers
asked by
hi
582 views
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