Sunday
October 26, 2014

Posts by anonymous


Total # Posts: 73,197

Pre-Calc/Trig...
@reiny sorry for not replying last night i was tired and didn't realize anyone responded. for #1 i think it's false? #2 i think is false as well the answer will be 2 not 1. am i right?
October 13, 2014

Pre-Calc/Trig...
Stuck on these two questions, help me please. The graph of y=3x^2-4x+2 opens downwards. True or False? The graph of y=2x^2-4x+2 has a y-intercept of (0,1). True or False?
October 13, 2014

Math
What is 0.32 written as a fraction in simplest form/ A. 32/100 B. 8/25 C. 100/32 D. 16/25 Is the answer B? Thanks
October 13, 2014

Math
Divide. Write the answer in simplest form. 8 1/6 divided by 2 1/24. I got 4 5/6 is this right? If so what's the simplest form.
October 13, 2014

Calc: Related Rates
Jack and Jill are out walking around in a field. At noon, Jack is located 800 feet west of Jill. Jack walks east at the rate of 5 feet/sec. while Jill walks north at 4 feet/sec. How fast is the distance between them changing at 12:02 p.m.?
October 13, 2014

chemistry/toxicology/instrumental analysis
A standard curve was produced using absorbance values of prepared standards obtained by UV spectrophotometry. The standards were made using concentrated hydrochloric acid as opposed to the 1N HCl that the lab manual says should be used. Because of this my absorbance values are...
October 13, 2014

Ed. tech HELP!!!
Ok thank you I reread and I see your point
October 13, 2014

Ed. tech HELP!!!
Ok maybe A?
October 13, 2014

Ed. tech HELP!!!
Oh ok C?
October 13, 2014

Ed. tech HELP!!!
Adding transitions to slides in a presentation A. Offers effects when moving from one slide to the next. B. Adds animation to selected text and images. C. Adds a new slide to a presentation in Microsoft Powerpoint. D. Creates sound effects connected to an image. Is the answer ...
October 13, 2014

physic
A long jumper leaves the ground at an angle of 22.7◦ to the horizontal and at a speed of 9.47 m/s. How far does he jump? The acceleration due to gravity is 9.8 m/s2 . Answer in units of m
October 13, 2014

Math123
Question Part Points Submissions Used A stone is dropped into a lake, creating a circular ripple that travels outward at a speed of 40 cm/s. Find the rate at which the area within the circle is increasing after each of the following. (a) after 2 s cm2/s (b) after 5 s cm2/s (c...
October 13, 2014

Math000
The height (in meters) of a projectile shot vertically upward from a point 3 m above ground level with an initial velocity of 21.5 m/s is h = 3 + 21.5t − 4.9t2 after t seconds. (Round your answers to two decimal places.) (a) Find the velocity after 2 s and after 4 s. v(2...
October 13, 2014

Math889
Someone Help me with this
October 13, 2014

Math889
A particle moves according to a law of motion s = f(t), t ≥ 0, where t is measured in seconds and s in feet. f(t) = te−t/4 (a) Find the velocity at time t (in ft/s). v(t) = (b) What is the velocity after 1 s? (Round your answer to two decimal places.) v(1) = ft/s (...
October 13, 2014

Ed. tech
I didn't say it was for poweroint I just said a presentation
October 13, 2014

Ed. tech
When viewing a presentation, words on slides may appear to fly in and out or dissolve. What makes text in a presentation do this? A. The addition of text animations B. The addition of slide transitions C. The addition of Action buttons D. The addition of clip art Is the answer...
October 13, 2014

math
7x4-4 devided 2=26
October 13, 2014

chemistry
Are the characteristics or properties of the elements making up a compound different from the characteristics or properties of the compound? For example, are the properties of oxygen and hydrogen different from the properties of water? Explain.
October 13, 2014

Calc
2) A hot air balloon rising vertically is being tracked by an observer on the ground, located 60 meters from the take-off point. At a certain instant, the balloon is 30 meters above the ground and the angle of elevation (between the ground and the observer’s sight line) ...
October 13, 2014

accounting
Comparative Statements of Retained Earnings for Renn-Dever Corporation were reported as follows for the fiscal years ending December 31, 2011, 2012, and 2013.
October 13, 2014

Math
For each object, its surface area, and some dimensions are given. Calculate the dimension indicated by the variable to the nearest tenth of a unit. a) right cone SA=7012mm^2 GIVEN=diameter of 48mm b) right square pyramid SA=65.5m^2 GIVEN=length of 3.5m
October 13, 2014

physics
With friction turned on, set the initial velocity of the box to 1.75 m/s, the coefficient of friction to 0.60, and the mass to 1.5 kg. Assume the acceleration due to gravity has a magnitude of 9.8 m/s2.
October 13, 2014

Ed Tech
i think its c
October 13, 2014

SS
Thank you so much for all the help!
October 13, 2014

SS
"A naturally formed feature on the surface of the earth."
October 13, 2014

SS
Are deciduous and coniferous forests landforms?
October 13, 2014

Ed Tech
When you make a timeline, you put in important points about the chosen subject, which, in this case, is Fredrick Douglass.
October 13, 2014

Earth science
Im sure of all of them except the last one.
October 13, 2014

Earth science
Can you please correct me if I am wrong or let me know what you think Thanks Y-A 1. Trees keep water in a watershed from accumulating silt before it empties into river. (i got true) 2. Permeable means capable of absorbing water. (i got false) 3. Old rivers are characterized by...
October 13, 2014

SS
What is an example of a deciduous forest in the US?
October 13, 2014

SS
Is it appropriate to use cities being below and above sea level as landforms? I know cities are not landforms, but sea level is a natural feature, which is why I ask.
October 13, 2014

us history
The Northwest Territory included all or part of the following states except A. Indiana B. Illinois C. Kentucky D. Michigan E. Minnesota F. Missouri G. Ohio H. Wisconsin all expect missouri and kentucky right?
October 13, 2014

SS
Can a glacier and desert be contrasting landforms?
October 13, 2014

us history
Despite the outcome of the American Revolution, Britain still held a fort on American soil at A. New York B. Philadelphia C. Juneau D. Saint Augustine E. Santa Fe F. Seattle G. Detroit I'm not sure between Philadelphia or New York because I think that the British had about...
October 13, 2014

us history
True or False The first US president brought a tone of informality and simplicity to the office. this is false right?
October 13, 2014

Physics
While moving in, a new homeowner is pushing a box across the floor at a constant velocity. The coefficient of kinetic friction between the box and the floor is 0.27. The pushing force is directed downward at an angle θ below the horizontal. When θ is greater than a ...
October 13, 2014

SS
No
October 13, 2014

SS
Can cities be considered landforms?
October 13, 2014

SS
Can a prairie be considered a landform?
October 13, 2014

SS
Can an island and a lake be contrasting landforms?
October 13, 2014

chem
if the precipitation of BaSO4 is incomplete due to improper heating and time what will happen to the percent error of sulfate?
October 13, 2014

math
a rectangular vegetable bed 10m long and 6m wide is edged on four sides with 2m wide border. find the area of the border
October 13, 2014

Chem
what mass of NaCl is contained in 24.88g of a 15% by mass solution of NaCl in water?
October 13, 2014

CHEM
calculate the molality of a solution formed by dissolving 27.8g of LiI in 500mL of water
October 12, 2014

Finc 322
Problem 7-17 Nonconstant Dividends [LO 1] Apocalyptica Corporation is expected to pay the following dividends over the next four years: $5.10, $16.10, $21.10, and $2.90. Afterwards, the company pledges to maintain a constant 5.25 percent growth rate in dividends, forever. ...
October 12, 2014

statistics
The Office of Student Services at a large western state university maintains information on the study habits of its full-time students. Their studies indicate that the mean amount of time undergraduate students study per week is 20 hours. The hours studied follows the normal ...
October 12, 2014

statistics
11. All probabilities can be expressed as decimal values ranging from 0 to 1.00.
October 12, 2014

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

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