Thursday
October 23, 2014

Posts by anonymous


Total # Posts: 72,997

Algebra 2
we are solving for h
October 12, 2014

Algebra 2
Please can you explain this problem to me. v = 1/3 π r^2 h Thank you in advance for your help
October 12, 2014

Algebra
The velocity of a ball thrown in the air is 72ft Per second. The height of the ball after t seconds Is represented by the equation H = 72ft t - 62t^2. Describe the dependent variable, the domain and range. Honestly I have to say I am lost 72 x 72ft - 256 = ? Not sure if I am ...
October 12, 2014

Chemistry
I did them before you told me, and when I read your steps I understand it is wrong. I will try again. I really thank you so much !! :)
October 12, 2014

Algebra
H(t) = 72ft t - 16t^2 How would I go about to solve 72 - 16^2 = 72 - 256 = 184
October 12, 2014

chemistry
You mix 50.0 ml of 2.0 M HCl and 50.0 ml of 2.0M NaOH. The temperature of the resulting solution increases from 22.5 degrees celcius to 32.3 degrees celcius. What is the q of the calorimeter
October 12, 2014

English
The dog suddenly turned friendly. Action or linking verb?
October 12, 2014

government
how did the new jersey and Virginia plan lead to the great compromise
October 12, 2014

physics
. What is the resultant momentum of a system of two particles with these masses and velocities: 3.75 kg moving north at 5.6 m/s and 4.2 kg moving northwest at 2.3 m/s?
October 12, 2014

statistics
For the data, 9 5 10 7 9 10 11 8 12 7 6 9
October 12, 2014

Chemistry
A precipitate forms when solutions of sodium carbonate and calcium nitrate are combined. Write the net ionic equation for this reaction. Please help
October 12, 2014

Chemistry
My lab had done protein crystallography with lysozyme. Two solutions were used to prepare the crystallization: lysosome solution and the precipitate solution. 1) There was a distinct amount of starting material in a well. what would that do to the size of the crystals if the ...
October 11, 2014

Algebra
Look at what you wrote: 3x <= x <= 1000 Does that make sense? How about 0 <= 3x <= 1000 0 <= x <= 333.3 or, in terms of whole presents, 0 <= x <= 333 and of course the range is thus 0 <= f(x) <= 1000
October 11, 2014

Algebra
Hector’s service club is raising money by wrapping presents in the mall. The function f(x) = 3x describes the amount of money, in dollars, the club will earn for wrapping x presents. They only have enough wrapping paper to wrap 1000 presents. Describe the domain and range...
October 11, 2014

math

October 11, 2014

CHemistry
write the balanced net ionic equation that shows the formation of Fe(OH)3 in the reaction of iron (III) nitrate with sodium hydroxide. Please help
October 11, 2014

Algebra 2
g(x) = f(x/(3/2)) = f(2/3 x) = |4/3 x| - 3
October 11, 2014

Algebra 2 (Reiny)
same way you do any function. If the result is g(x), then g(x) = 1/4 * f(x) = (|2x|-3)/4 = |x/2| - 3/4
October 11, 2014

Chemistry
Write the balanced molecular equation for the reaction between lithium phosphate and calcium nitrate.
October 11, 2014

statistics
A computer is used to randomly select a number between 1 and 2000. Event A is selecting 460.
October 11, 2014

Business Law
With authority, Ganeesh contracts to buy Sam’s farm for Belinda. Because he believes that Sam will raise the price if he finds out that he is representing Belinda, Ganeesh does not tell Sam he is representing anyone. On the day of the closing, neither Ganeesh nor Belinda ...
October 11, 2014

calculus
Damon did one of these for you a while ago. Can you not use the same logic at least to get started here?
October 11, 2014

physics
The figure shows a girl and a boy each exerting a force to move a crate horizontally a distance of 13 m at a constant speed. The girl’s applied force is 75 N [22° below the horizontal]. The tension in the rope pulled by the boy is 75 N [32° above the horizontal].
October 11, 2014

research paper
OK so i my research project is "you will write a persuasive essay on a current and controversial event is science. the topic should inform us and then present your viewpoint on the topic - one of the paragraphs should be a rebuttal to a counterargument(you are stating ...
October 11, 2014

research paper
:) ok
October 11, 2014

research paper
how long does it have to be?
October 11, 2014

research paper
so for my abstract should i do it about human or overall?
October 11, 2014

research paper
so my topic is cloning ethical that doesn't necessarily mean it has to be humans right it could also be cloning of animals, etc
October 11, 2014

research paper
ok i'll keep you updated on my research then
October 11, 2014

research paper
s my outline for my research paper is this * abstract * introduction: includes the research question, general overview of your paper *scientific and historical perspective of your topic * two or three differing opinions relating to the topic *conclusion giving your opinion
October 11, 2014

Trigonometry
By the double-angle formula for sine: sin(2x) = 2sin(x)cos(x). So: 4sin(x)cos(x) = 2sin(2x). The equation now becomes: 4sin(x)cos(x) = 1 ==> 2sin(2x) = 1 ==> sin(2x) = 1/2. This solves to get: 2x = π/6 ± 2πk and 2x = 5π/6 ± 2πk, where k ...
October 11, 2014

chemistry
with abstarct, introduction, counterargument, rebutall, conclusion,etc
October 11, 2014

chemistry
how to do a research paper
October 11, 2014

Physics
a car enters a 300m radius flat curve on a rainy day when the coefficient of static friction is between its tires and the road is .600. What is the maximum speed a car can travel around a curve without sliding.
October 11, 2014

science!!
1) Which of the following correctly states the relationship between hippos and whales? (1 point) A) Whales evolved from hippos. B) Hippos evolved from whales.*** C) Hippos and whales do not share a common ancestor. D) Hippos and whales evolved from a common ancestor. 2) fossil...
October 11, 2014

Physics
A ball is tied to the end of a cable of negligible mass. The ball is spun in a circle with a radius 2.00 m making 0.700 revolutions per second. What is the centripetal acceleration of the ball?
October 11, 2014

Physics
An object dropped from a window of a tall building hits the ground in 14.1 s. If its acceleration is 10 m/s^2, the height of the window above the ground is (you may neglect air resistance):
October 11, 2014

Physics
An object has three component velocities: 5mi/hr toward the east, 12mi/hr toward the south, and 8mi/hr toward the northwest. Find the resultant velocity of the object. For resultant velocity, I got 6mi/hr I don't understand how to find the direction angle and direction (ex...
October 10, 2014

Physics
A 60.0 kg person rides in elevator while standing on a scale. The elevator has an acceleration 2.00 m/s^2 upward. What is the reading on the scale?
October 10, 2014

Health
Has anyone here watched the movie "The Ultimate Gift"?
October 10, 2014

math
There were 60 pumpkins in a pumpkin patch but it was difficult for farmer Joe to find a perfect pumpkin.
October 10, 2014

Science
What is the probabilty of two tall peas plants, heterzygous for the tall ellele, producing a short pea plant.? A. 75% B. 50% C. 25% D. 0% Is the answer c?
October 10, 2014

Vocabulary check!
avuncular: like an uncle patrimony: a family inheritance matriarchal: to register as a student at a college or a university patronymic: name derived from a paternal ancestor
October 10, 2014

Chemistry
Imagine that you have a 7.00L gas tank and a 4.00L gas tank. You need to fill one tank with oxygen and the other with acetylene to use in conjunction with your welding torch. If you fill the larger tank with oxygen to a pressure of 145atm , to what pressure should you fill the...
October 10, 2014

Science
What does the notation TT mean to geneticists? A. Two dominant alleles B. Heterozygous C. At least one dominant allele D. One dominant and one recessive allele Is the answer A?
October 10, 2014

Math
So the answer is B?
October 10, 2014

Math
What is the product of (5.1*10^3)*3.2*10^3)? (Please express your answer in scientific notation.) A. 16.32*10^6 B. 1.632*10^7 C. 16.32*10^9 D.1.632*10^10 Is the answer B?
October 10, 2014

Physics
the site won't allow me to post the figure.
October 10, 2014

Physics
can you solve it with figure 1.3?
October 10, 2014

Physics
Find the magnitude and direction of the resultant R of the three vectors shown in figure 1.3. The vectors have the following magnitudes: A=5.0, B=7.9, and C=8.0. Express the direction of the vector sum by specifying the angle it makes with the positive x-axis, with the ...
October 10, 2014

Pre algebra
when a skydiver jumps from an airplane, the distance of d in feet the diver falls in t seconds before opening the parachute is given by the formula d=16t^2 (the formula asumes that there is no air resistance) find the time it takes a skydiver to fall 1,296ft before openening ...
October 10, 2014

Physics
An airplane whose speed is 150km/hr climbs from a runway at an angle of 20° above the horizontal. What is its altitude two minutes after takeoff? How many kilometers does it travel in a horizontal direction during this two minute period? My work: 150cos(20) = 140.9 150sin(...
October 10, 2014

chem 12
Consider: C(12)H(22)O(11)(s)-->(11)H(2O)(g)+(12)C(s) The rate of decomposition of C12H22O11 is 0.75 mol/min. What mass of C is produced in 10 seconds?
October 10, 2014

Petit High School
I don't know which career to choose and I already chosen the subject at school so I'm asking which career optoins
October 10, 2014

physics
A helicopter, starting from rest, accelerates straight up from the roof of a hospital. The lifting force does work in raising the helicopter. An 740-kg helicopter rises from rest to a speed of 7.6 m/s in a time of 3.1 s. During this time it climbs to a height of 8.6 m. What is...
October 10, 2014

physics
A basketball player makes a jump shot. The 0.610-kg ball is released at a height of 1.90 m above the floor with a speed of 7.08 m/s. The ball goes through the net 3.04 m above the floor at a speed of 4.29 m/s. What is the work done on the ball by air resistance, a ...
October 10, 2014

physics
A pendulum consists of a small object hanging from the ceiling at the end of a string of negligible mass. The string has a length of 0.80 m. With the string hanging vertically, the object is given an initial velocity of 2.6 m/s parallel to the ground and swings upward on a ...
October 10, 2014

Health
What are some effects of cyberbullying on the bully?
October 10, 2014

Biology
How is homeostasis seen in cells?
October 10, 2014

chemistry
9
October 10, 2014

Monatomic ion Oxygen
No clue how to explain this. Just don't understand it: Which formation of the monatomic ion of oxygen is the most energetically favorable? A) O2- B) O2+ C) O4+ D) O- E)O6+
October 10, 2014

physics
find the change in momentum of a car weighing 1500kg when its speed increases from 36km/h to 72km/h uniformly
October 10, 2014

math
Chester builds and collects models of boats and planes. He has 22 models altogether. Chester has 8 more planes than he does boats. How many of each kind of model does he have?
October 10, 2014

physics
a car accelerates uniformly from rest to 29 m/s in 12s along a level of road. ignoring friction, determine the average power (hp) required to accelerate the car if the weight of the car is 1.2 x 10^4 N. I need help setting up
October 9, 2014

physics
a vertical spring whose spring constant is 850 n/m stands on a table and is compressed 0.400m. what speed can it give to a .300kg ball when released?
October 9, 2014

Math
With 20 pirates and 1000 pieces of gold: Captain Jack gets 113 gold coins (151 if you count the 38 everyone in the crew gets) First Mate gets 66 gold coins (104 if you count the 38 coins everyone in the crew gets) The Crew gets 38 gold coins each The PBA gets 7 gold coins. ...
October 9, 2014

language art
Thanks Mr. Anonymous
October 9, 2014

language art
Is digging a present participle? My answer yes . Am I correct?
October 9, 2014

algebra
how do u solve x^3+2x^2-6x-6=(x-2)(x+3)(x+k)
October 9, 2014

Chemistry
What are the parts of a calorimeter used in chemistry?
October 9, 2014

Math
Which is greater? 7.08*10^15 or 7.65*10^14 or 7.65*10^4 A. 7.08*10^15 B. 7.65*10^14 C. They are equal D. 7.65*10^4 D?
October 9, 2014

Math
According to the 2010 census, the population of Nebraska was 1.8*10^6 people. Which state had a smaller population? A. Califoria: 3.7*10^7 B. Rhode Island: 1.1*10^6 C. Texas: 2.5*10^7 D. Missouri: 6*10^6 B?
October 9, 2014

Math
Which of the following is less than 6.5*10^-5? A. 1.4*10^.3 B. 2.5*10^-4 C. 7.8*10^-5 D. 4.6*10^6 Is the answer A?
October 9, 2014

physics
The pulley system in Figure 6-25 is used to lift a crate of mass m = 41 kg. Note that a chain connects the upper pulley to the ceiling and a second chain connects the lower pulley to the crate. Assume that the masses of the chains, pulleys, and ropes are negligible.
October 9, 2014

Math
Which of the following is greater than 4.3*10^9 A. 2.1*10^9 B. 3.2*10^9 C. 5.3*10^9 D. 7.4*10^8 Is the answer C? Thank you
October 9, 2014

Science
please im begging you.
October 9, 2014

Science
How does a mutation in the DNA affect the way proteins are made? A. A mutation in the DNA results in misshapen tRNA molecules that do not fit inside the ribosomes. B. A mutation in the DNA results in a change in the mRNA and, ultimately, to a different protein structure. C. A ...
October 9, 2014

Math
A box of chalk and 2 staplers cost $10. Three boxes of chalk and 2 staplers cost$18. Find the cost of 1 box of chalk and 1 stapler.
October 9, 2014

Algebra
PLease ,Please ,Please help me solve this problems #1 Since x = 3y-4, -3(3y-4)+4y = -3 now just solve for y and then x #2 Since x = 4+4y, -(4+4y) = 4y=-4 or something Again, solve for y, then x
October 9, 2014

Science
A person who has cystic fibrosis? A. Inherited two normal alleles from a parent. B. Inherited one mutated allele and one normal allele from each parent. C. Inherited two mutated alleles, one from each parent. D. Inherited two mutated alleles from a parent. Is the answer C? Thanks
October 9, 2014

Algebra
Business Computers English Foreign Languages Health Home Economics Math Music Physical Education Science Social Studies GRADE LEVELS Preschool Kindergarten Elementary School 1st Grade 2nd Grade 3rd Grade 4th Grade 5th Grade 6th Grade 7th Grade 8th Grade High School 9th Grade ...
October 9, 2014

Science
A mutation in a gene that controls mitosis in cells may cause? A. Cancer B. Cystic fibrosis C. Albinism D. Meiosis. Is the answer B? Thanks
October 9, 2014

Ms, Sue or anyone
Please help me I need help fast.
October 9, 2014

HELP!
HELP, please anyone.
October 9, 2014

Science
How does a mutation in the DNA affect the way proteins are made? A. A mutation in the DNA results in misshapen tRNA molecules that do not fit inside the ribosomes. B. A mutation in the DNA results in a change in the mRNA and, ultimately, to a different protein structure. C. A ...
October 9, 2014

Algebra
Graph the system below and write its solution. =3x+y−6 =y−1/2x-1
October 9, 2014

1st grade
Which of the following is a compound word? A. Together B. Sometime C. Yesterday D. None of the above
October 9, 2014

Algebra
Solve the compound inequality. >−2x3−11 or ≥+3x36 Write the solution in interval notation. If there is no solution, enter ∅ .
October 9, 2014

Algebra
Solve the compound inequality. <−16<−2x4−4 Graph the solution on the number line.
October 9, 2014

Algebra 2
The sets D and E are defined as follows. =D>z|z4 D={z|z74} E={z|z<=7} Write ∩DE and ∪DE using interval notation. If the set is empty, write ∅ .
October 9, 2014

Algebra
Solve the compound inequality. >−2x3−11 or ≥+3x36 Write the solution in interval notation. If there is no solution, enter ∅ .
October 9, 2014

ALGEBRA 2
Solve the compound inequality. <−16<−2x4−4 Graph the solution on the number line.
October 9, 2014

Algebra
Graph the system below and write its solution. =+3xy−6 =y−−12x1
October 9, 2014

Algebra 2
Ahmad will rent a car for a day. The rental company offers two pricing options: Option A and Option B. For each pricing option, cost (in dollars) depends on miles driven, as shown below. Costindollars Milesdriven OptionA OptionB (a) If Ahmad drives the rental car 150 miles, ...
October 9, 2014

Algebra 2
Thank you so much.
October 9, 2014

SS
That's why I asked, because the statistics show only 1% greater urbanization for the US over Canada.
October 9, 2014

SS
Does urbanization happen more in Canada or the US? The US, I think...
October 9, 2014

SS
What are some similarities between Canadian and American culture and economy?
October 9, 2014

Science
c?
October 9, 2014

Science
What is a genetic mutation? A. The process of decreasing chromosomes numbers to half of what the parent cell has B. The copying of DNA to form identical daughter cells C. A permanent change in an organisms genetic code D. a fusion of egg and sperm cell to produce a new ...
October 9, 2014

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