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2012
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Questions Asked on November 9, 2012

A sample of a radioactive substance decayed to 94.5% of its original amount after a year. (Round your answers to two decimal
1. 2 answers
2. asked by kela
3. 20,931 views
What is the first thing you need to do to add 1/9 + 5/6 ?
1. 53 answers
2. asked by Bell
3. 8,812 views
find the function that is finally graphed after the following transformations are applied to the graph of y=sqrt x in the order
1. 2 answers
2. asked by ladybug
3. 6,453 views
The flame in a torch used to cut metal is produced by burning acetylene(C2H2) in pure oxygen. Assuming the combustion of 1 mole
1. 1 answer
2. asked by Brittany
3. 4,808 views
The radius of a sphere is increasing at a rate of 2 mm/s. How fast is the volume increasing when the diameter is 80 mm?mm^3/s
1. 2 answers
2. asked by kela
3. 4,657 views
For which of the following aqueous salts will electrolysis produce hydrogen gas and oxygen gas? Answered the hint in Mastering
1. 4 answers
2. asked by Mike
3. 4,652 views
1. Which of the following events caused immigrants to migrate north after the civil war?-the passage of the homestead act******
1. 4 answers
2. asked by Jessica
3. 4,288 views
Use a linear approximation (or differentials) to estimate the given number.e0.01
1. 2 answers
2. asked by kela
3. 4,260 views
Answer the following function.f(x)=2x^2-x-1 A. Is the point (-2,9) on the graph of f? B. If x equals 2, what is fx? What
1. 1 answer
2. asked by ladybug
3. 4,124 views
Consider the following reaction:2H2 (g) + O2 (g)  2H2O (l) ΔH = -572 kJ a. How much heat is evolved for the production of
1. 1 answer
2. asked by Anonymous
3. 3,981 views
Eric eats 1/6 of an apple pie and Jack eats 1/4 of the apple pie. How much of the pie has been eaten?
1. 33 answers
2. asked by Bell
3. 3,861 views
1. The Americans formed a republic, a government in which citizens rule througha. elected representatives.*** b. monarchies. c.
1. 26 answers
2. asked by Jman
3. 3,710 views
If Joyce reads 1/6 of her book on Monday, 2 over 5 of her book on Tuesday, and 1/3 of her book on Wednesday, what part of her
1. 15 answers
2. asked by Bell
3. 3,665 views
what elements follow the octet rule?
1. 3 answers
2. asked by Ann
3. 3,574 views
If Nell works 3/4 of an hour on Monday and 6/10 of an hour on Tuesday, how much time will she work altogether?
1. 14 answers
2. asked by Bell
3. 3,495 views
A metallic sphere initially has a net charge of +4.0 nC. A negatively-charged rod initially has a net chargeof –6.0 nC. When
1. 1 answer
2. asked by Ella
3. 3,326 views
To make a sandwich, Steve uses 1/8 lb of ham and 1/5 lb of cheese. How much more cheese than ham does he use?
1. 11 answers
2. asked by Bell
3. 3,137 views
Gina uses a magnifying glass to look at bugs. A caterpillar that is 2 inches long appears 4.5 inches long through the glass.
1. 15 answers
2. asked by HOLAMOM
3. 3,121 views
If I could have some help on this question I'd appreciate it.I think the answer is B.Which problem would most likely result if
1. 10 answers
2. asked by Bob
3. 2,590 views
Gaseous iodine pentafluoride, IF5, can be prepared by the reaction of solid iodine andgaseous fluorine: • I2 (s) + 5F2 (g) →
1. 2 answers
2. asked by byke
3. 2,550 views
Hey I have the write the sentences in passiv. But I do not really be good in passiv... can anybody check and may axplain what
1. 8 answers
2. asked by Minnie
3. 2,384 views
What are the atomic number and the atomic mass of theelement formed when 84 218Po emits a beta particle? What are they if the
1. 2 answers
2. asked by Sue L
3. 2,351 views
I have 1 thousand, 12 tens, 2 hundreds, and 2 ones. What number am I?
1. 4 answers
2. asked by lee
3. 2,330 views
Give the number of unpaired electrons present in a ground-state atom of Tl.I got 5, which isn't right. ndicate which species in
1. 1 answer
2. asked by Anonymous
3. 2,266 views
Yolanda completed 14/25 of her math problems before her break and 1/5 of her math problems after her break. What fraction of her
1. 13 answers
2. asked by Bell
3. 2,229 views
What is pH of 0.1M solution of NH4Br, if the pKb of NH3 is 4.74?
1. 1 answer
2. asked by Henry
3. 2,163 views
The normal freezing point of cyclohexane is 6.55 C. When 0.458 g of benzophenone is dissolved in 15.0 g of cyclohexane, the
1. 1 answer
2. asked by Ania
3. 2,075 views
**I JUST NEED THE STEPS ON HOW TO SOLVE THE PROBLEMS**An object experiences an acceleration of 6.8m/s^2. As a result, it
1. 4 answers
2. asked by Elyssa
3. 1,958 views
The ends of a light string are tied to two hooks A and B in a ceiling which are 100 cm apart horizontally so that the length
1. 1 answer
2. asked by Tiffany
3. 1,864 views
A common inhabitant of human intestines is the bacterium Escherichia coli. A cell of this bacterium in a nutrient-broth medium
1. 1 answer
2. asked by kela
3. 1,781 views
Locate the absolute extrema of the function on the closed interval:y= 4/x+tan(pix/8), [1,2]
1. 1 answer
2. asked by Olivia
3. 1,710 views
A large fake cookie sliding on a horizontal surface is attached to one end of a horizontal spring with spring constant k = 375
1. 1 answer
2. asked by KRISTEL
3. 1,575 views
A 1.30-L sample of argon gas is at 1.02 atm and 21.5 degrees Celsius. a. what mass of argon is in the container. b. If the
1. 1 answer
2. asked by Dee
3. 1,498 views
Everett is reading a book for his language arts class. He read 1/3 of the book on Saturday, 3/8 of the book on Sunday and 1/4 of
1. 5 answers
2. asked by Jerald
3. 1,492 views
Find the linearization L(x) of the function at a.f(x) = x3/4, a = 81
1. 1 answer
2. asked by kela
3. 1,447 views
A 1.00kg piece of aluminum at 90.0c in placed in 4.00 liters (4.00kg) of water at 25.0c. What is the final temperature(Tf)
1. 2 answers
2. asked by Dave
3. 1,441 views
An athlete whose mass is 94.0 is performing weight-lifting exercises. Starting from the rest position, he lifts, with constant
1. 1 answer
2. asked by Anonymous
3. 1,420 views
Given a scale factor of , find the coordinates for the dilation of the triangle with vertices at (0, 0), (0, 2) and (4, 0).
1. 3 answers
2. asked by HOLAMOM
3. 1,405 views
The distance between Earth andthe Moon is 3.84 * 108 m. Show that the round-trip time for the light is 2.56 s Thanks in advance
1. 1 answer
2. asked by Shawn=Help please
3. 1,352 views
Which of the following situations can be best modeled using a continuous distribution?a) Number of heads in 10 flips of coin. b)
1. 1 answer
2. asked by Trasie
3. 1,345 views
A street light is mounted at the top of a 15-ft-tall pole. A man 6 ft tall walks away from the pole with a speed of 7 ft/s along
1. 1 answer
2. asked by kela
3. 1,326 views
a nutritional chart on the side of a box of a cereal state that there are 84 calories in a 3/4 cup serving. how man calories re
1. 1 answer
2. asked by peggy
3. 1,317 views
A ski jumper starts from rest 44.0 m above the ground on a frictionless track, and flies off the track at an angle of 45.0°
1. 1 answer
2. asked by physics help!!
3. 1,307 views
A boat is pulled into a dock by a rope attached to the bow of the boat and passing through a pulley on the dock that is 1 m
1. 0 answers
2. asked by kela
3. 1,299 views
Mr. Smith is purchasing a $190000 house. The down payment is 20% of the price of the house.He is given the choice of two
1. 0 answers
2. asked by Amber
3. 1,290 views
Water is being filled into a water tank at 22 liters/second. The base of the tank has dimensions w = 1 meter and L = 2 meter .
1. 1 answer
2. asked by kchik
3. 1,249 views
Use Green's Theorem to evaluateF · dr. C (Check the orientation of the curve before applying the theorem.) F(x, y) = y cos x
1. 1 answer
2. asked by Becky
3. 1,246 views
Calculate the final temperature of a mixture of 200.0g of ice initially at -16.5 Celsius and 406.0g of water initially at 84.5
1. 3 answers
2. asked by Brittany
3. 1,235 views
What is the percent by mass of hydrogen in C3H8?A. 8.0% B. 18.2% C. 80.0% D. 81.8% I say B
1. 2 answers
2. asked by shana
3. 1,233 views
A 65.0 kg ice skater moving to the right with a velocity of 2.47 m/s throws a 0.18 kg snowball to the right with a velocity of
1. 1 answer
2. asked by Dakota
3. 1,231 views
the pendulum of a grandfather clock is 1.3m long. Determine the length of the arc through which the pendulum moves if it moves
1. 1 answer
2. asked by aj
3. 1,143 views
what website should i go on to find out about Columbus
1. 5 answers
2. asked by anabelle
3. 1,100 views
Simplify: 3-10+9.7 Simplify: 2+3.10 divided by 5.3-9 Simplify: 16-10 divided by 5+13
1. 3 answers
2. asked by monica
3. 1,099 views
help me solve this equation by substitution.y^2− 4x^2 = 7 9y^2+16x^2 = 323
1. 1 answer
2. asked by Tom
3. 1,097 views
what role does intrapersonal and interpersonal play in criminal justice?
1. 1 answer
2. asked by takeya
3. 1,092 views
What are the implications (problems) of these differences in time to a manager in London, Ontario who might need to coordinate a
1. 1 answer
2. asked by Jake E.
3. 1,079 views
Central asiaComplete the following: Describe what influence the former invaders of this region brought into the regions culture.
1. 2 answers
2. asked by tony
3. 1,078 views
Please write the balanced chemical equation for reaction the following chemical reactionozone gas, O3, reacts with
1. 1 answer
2. asked by Amanda
3. 1,073 views
Shelly and Marcom are selling popcorn for their music club. Each of them received a case of popcorn to sell. Shelly has sold 7/8
1. 8 answers
2. asked by Jerald
3. 1,069 views
True or False The indefinie pronouns all,any, more, most, and some are alwas singular in meaning
1. 7 answers
2. asked by Jackie
3. 1,055 views
A 2.7 kg ball strikes a wall with a velocity of 7.8 m/s to the left. The ball bounces off with a velocity of 6.6 m/s to the
1. 1 answer
2. asked by Brandon
3. 1,048 views
Potassium ferricyanide has an extinction coefficient of 1020 1/M*cm at 420 nm. The absorbance of a sample of unknown
1. 1 answer
2. asked by Jay
3. 1,036 views
An appositive is a noun that is placed after another noun in order to tell more about it and it's usually set off with commas.
1. 1 answer
2. asked by monica
3. 1,035 views
A rotating uniform-density disk of radius 0.7 m is mounted in the vertical plane. The axle is held up by supports that are not
1. 0 answers
2. asked by Udit
3. 1,023 views
A gyroscope with rotational inertia 6.4 10-3 kg·m2 is precessing in a horizontal plane at 0.46 rad/s under the influence of a
1. 3 answers
2. asked by Jake
3. 1,021 views
Chester and Kelsey were given a box of candy to sell. Each box of candy had 24 individual packages inside. Chester sold 1/4 of
1. 5 answers
2. asked by Jerald
3. 1,019 views
I need help with this lab.Write the equation for the decomposition of the hydrate, CuSO4*XH2O. Mass of crucible and hydrate:
1. 3 answers
2. asked by Nancy
3. 1,017 views
3/7 of the muffins in the bakery were carrot muffins. The number of blueberry muffins was twice the number of multi grain
1. 1 answer
2. asked by Anonymous
3. 1,005 views
Suppose a distant world with surface gravity of 7.12 m/s2 has an atmospheric pressure of 7.48 104 Pa at the surface.(a) What
1. 0 answers
2. asked by AMY
3. 994 views
deteermine algebracially whether the given function is even,odd, or neither.f(x)= -3x-/9/
1. 2 answers
2. asked by ladybug
3. 988 views
Jenna has $1500 in a savings account. She adds $30 to her account each month. Luis has $2400 in his savings account. He
1. 1 answer
2. asked by sahar
3. 987 views
An umbrella with a diameter of 1 m turns 22 rev every 44 seconds. If it's 1.5 m from the ground, calculate the time it takes for
1. 1 answer
2. asked by Leslie
3. 964 views
A box slides downwards at a constant velocity on an inclined surface that has a coefficient of friction uK = .58 The angle of
1. 3 answers
2. asked by dee
3. 944 views
A freshly brewed cup of coffee has temperature 95°C in a 20°C room. When its temperature is 68°C, it is cooling at a rate of
1. 0 answers
2. asked by kela
3. 939 views
Think about what it might have been like to coordinate a meeting sixty-five years ago, before computers and conference calling.
1. 1 answer
2. asked by Jake E.
3. 938 views
What is the wavelength of a 600Hz sound wave ( assume the speed of sound is 340 m/s )?
1. 1 answer
2. asked by Anonymous
3. 924 views
Consider the reaction:CO(g) + H2O (g) <---> CO2(g)+H2(g) which of the following initial composition will NOT achieve equlibrium?
1. 2 answers
2. asked by Ania
3. 917 views
I need help solving this set of equations by substitution.xy=2 3x − y + 5 = 0 I originally used (3x+5=y) and came up with
1. 1 answer
2. asked by Jim
3. 911 views
A 14.7 kg crate is pulled up a rough inclinewith an initial speed of 1.5 m/s. The pulling force is 124.0 N parallel to the
1. 1 answer
2. asked by Anonymous
3. 906 views
51.34 g of water at 81.5 oC is added to a calorimeter that contains 52.13 g of water at 40.7 oC. If the final temperature of the
1. 1 answer
2. asked by Brittany
3. 902 views
Pentane is a small liquid hydrocarbon, between propane and gasoline in size C5H12. The density of pentane is 0.626g/ml and its
1. 0 answers
2. asked by Brittany
3. 876 views
Write y^2 + 8x = 0 in polar form.
1. 1 answer
2. asked by G
3. 862 views
Tanya is baking a birthday cake for her mom. The recipe calls for 3/8 stick of butter for the cake and another 1/4 stick of
1. 1 answer
2. asked by Jerald
3. 860 views
What is one mole of H2O composed of?A. 2 hydrogen atoms and 1 oxygen atom B. 2 × (6.02 × 1023) hydrogen atoms and 6.02 ×1023
1. 1 answer
2. asked by shana
3. 859 views
Missy divided her scrapbook page into sections to be decorated Each section she decorated was either 1/6 or 1/2 of the page The
1. 6 answers
2. asked by Jerald
3. 857 views
A ball of mass m makes a head-on elastic collison with a second ball (at rest) and rebounds in the opposite direction with a
1. 3 answers
2. asked by Henry
3. 857 views
How have technological advances impacted a manager’s ability to span time zones when doing business?
1. 0 answers
2. asked by Jake E.
3. 857 views
rene gave each of six people 1/10 of a veggie pizza. rene has 2/5 of the pizza left. explain how this is true
1. 1 answer
2. asked by joe
3. 829 views
A force of 25 N accelerates a body by 5 m/s2. What is the mass of the body?
1. 2 answers
2. asked by Bryan
3. 824 views
1 2Mg + o2 --> 2Mgo2 MgCo3 --> MgO + Co2 3 Co2 + Ca(OH)2 --> CaCo3 + h2O 4 Zn + 2HCl --> ZnCl2 + H2 5 2H2 + O2 ---> 2H2O 2 KI +
1. 0 answers
2. asked by peter
3. 823 views
i am a three digit decimal whose digit in the tenths place is 4 times the digit in the hundredths place and 4 more than the
1. 2 answers
2. asked by Tiffany
3. 820 views
Given a scale factor of 2, find the coordinates for the dilation of the line segment with endpoints (–1, 2) and (3, –3)
1. 1 answer
2. asked by HOLAMOM
3. 805 views
Answer the following function.f(x)=2x^2-x-1 A. Is the point (-2,9) on the graph of f? B. If x equals 2, what is fx? What
1. 1 answer
2. asked by ladybug
3. 799 views
The Federalist Papers are most important because they _____.
1. 1 answer
2. asked by Anonymous
3. 798 views
1. What did you observe for the carrying capacity of each species?
1. 1 answer
2. asked by Anonymous
3. 794 views
A 0.72 kg rock is projected from the edge of the top of a building with an initial velocity of 11 m/s at an angle 51◦ above
1. 0 answers
2. asked by cristie
3. 790 views
A charge of +Q and a charge of +2Q are separated by a distance r. The electric force of +2Q on +Q has a magnitude of F and is
1. 1 answer
2. asked by Matt
3. 787 views
It is given that a differentiable function f(x)=4x^3+kx^2-36x-15 (k is a constant) is decreasing on -3/2<x<2 and increasing on
1. 1 answer
2. asked by Anonymous
3. 785 views
aunt consuelo is consuelo melendez,doctor of dental surgery.
1. 1 answer
2. asked by monica
3. 781 views
4. Which is NOT a true statement?a. Not all fats are bad for you. b. Fats can increase your risk for heart disease. c. Saturated
1. 3 answers
2. asked by Jman
3. 775 views

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