Sunday
May 1, 2016

Posts by aaron

Total # Posts: 478

Biology
Do you expect that somatic cell gene therapy and germ-line gene therapy for the same disease will be equally difficult?
April 28, 2016

maths
409 726 IN STANDARD EXPANDED NOTATION
April 18, 2016

math
The mean of 14 numbers is 50. Removing one of the numbers causes the mean to decrease to 43. What number was removed?
March 23, 2016

math
For a popular Broadway musical, the theater box office sold 356 tickets at $80 apiece, 275 tickets at $60 apiece, and 369 tickets at $45 apiece. How much money did the box office take in? A. $16,605 B. $44,980 C. $61,585 D. $16,500
March 8, 2016

Chemistry
An interference filter is to be constructed for isolation of the nitrobenzene absorption band at 1537 cm-1. (a) If it is to be based on first-order interference, what should be the thickness of the dielectric layer (refractive index of 1.34)? (b) What other wavelengths would ...
February 27, 2016

chemistry
For the reaction N2(g) + 3H2(g) 2NH3(g), what will happen if more ammonia gas is added?
February 3, 2016

Math
Yipee, thanks!
January 7, 2016

Math
Can someone help me complete this table? a - 5, 6, 7, 8, 9 b - 3.8, 4.6, 5.4, _, _ So, do you add 0.8 each time? I think the next two numbers are 6.2 and 7.0.
January 7, 2016

math
Can someone help me complete this table? a - 5, 6, 7, 8, 9 b - 3.8, 4.6, 5.4, _, _ I don't have any answers. I'm sorry. Is there a rule?
January 7, 2016

physics
a side view of a car tire before it is mounted on a wheel. Model it as having two sidewalls of uniform thickness 0.695 cm and a tread wall of uniform thickness 2.50 cm and width 23.2 cm. Assume the rubber has a uniform density 1.10 103 kg/m3. Find its moment of inertia about ...
December 22, 2015

Chemistry
How many g of CaCl2 are required to prepare 0.250 L of a 0.200 M solution?
December 13, 2015

Social Studies
Hey "Anon" you did a great job and yes you did answer correctly! ~Aaron Stern
December 12, 2015

Math
Samantha wants to find the height of a pine tree in her yard. She measures the height of the mailbox at 3 feet and its shadow at 4.8 feet. Then she measures the shadow of the tree at 56 feet. How tall is the tree?
November 19, 2015

Math fractions
A rectangle picture frame is made of wood stripes that are 3/4 inches wide the outside edge of the frame is 8 1/4 inches long and 6 3/4 inches wide can a rectangle picture that is 7 inches long and 5 1/2 inches wide fit inside the frame?
November 19, 2015

physics
A cat is chasing a mouse. The mouse runs in a straight line at a speed of 2.2 m/s. If the cat leaps off the floor at a 29° angle and a speed of 4.0 m/s, at what distance behind the mouse should the cat leap in order to land on the poor mouse?
November 4, 2015

Chemistry
Someone please help me, they're just practice questions but I need some help Hydrogen peroxide, H O , is used to disinfect contact lenses. What volume of O , in mL, of O (g) at 36°C and 741 mmHg can be liberated from 50.0 mL of an aqueous solution containing 3.00% H O ...
October 23, 2015

Chemistry
Now, my problem with this question is the break-down, I don't know where to start. Calculate the volume of H (g), measured at 21.9°C and 769 Torr required to react with 36.3 L CO(g), also measured at 21.9°C and 769 Torr. Assume the gases react as follows. 3CO(g) + ...
October 23, 2015

Algebra 2
Brandon is a retard for being in Statistics.... its 10*8C2*13
October 21, 2015

algebra 2
so in elimination you always add first, then subtract the for the next equation? thank you, Aaron
September 30, 2015

algebra 2
3x+y+z=14 -x+2y-3z=-9 5x-y+5z=30 linear equations solve by elimination
September 30, 2015

math
What are the important variables in the problem below? A test is worth 50 points. Multiple-choice questions are worth 1 point, and short-answer questions are worth 3 points. If the test has 20 questions, how many multiple-choice questions are there?
September 28, 2015

science
Describe how you would find the mass of 250mL of water
September 22, 2015

Technology
no they will need Microsoft powerpoint software to view the slides you have made
September 21, 2015

chemistry HELP!!
Reaction Rate = -(1/2) [d(H2O2)/dt] = [d(O2)/ dt] Using 25 mL of a 0.2 M hydrogen peroxide solution, the following results are obtained from the equation above: 8.62 mL of gas is collected in 120 seconds. (Assume 760 Torr = 1 atm) Room temperature is 25 degrees C and the vapor...
September 21, 2015

Social Studies
Just somebody from Washington State passing by
September 15, 2015

Math
On December 10, 2014, Jennings, Inc. paid out total dividends of $450,000 (this was the only dividend payment made during the year). If Jennings reported Retained earnings of $2,186,000 for 2013 and Retained earnings of $2,380,000 for 2014, what was Jennings reported net ...
September 9, 2015

algebra
An executive drove from home at an average speed of 45 mph to an airport where a helicopter was waiting. The executive boarded the helicopter and flew to the corporate offices at an average speed of 120 mph. The entire distance was 250 miles; the entire trip took three hours. ...
September 9, 2015

Computer
Katie typed a paper using Microsoft Word. Microsoft Word is a type of software.
August 27, 2015

Math
A bag held 3 red marbles, 1 blue marble, and 4 yellow marbles. Lee drew a red marble and did not replace it. What is the probability of drawing a yellow marble next? A. 1/4 B. 1/3 C. 1/2 D. 4/7
May 19, 2015

Technology in the classroom
Microsoft Office
May 7, 2015

algebra
A package is dropped from a helicopter at 1600 feet. The height of the package can be modeled by: h = -16t squared + 1600 , where h is the height of the package in feet and t is the time in seconds. How long will it take for the package to hit the ground?
April 13, 2015

math
x: -2,-1, 0, 1, 2 ------------------- y: 9, 4,-1,-6,-11 find the function rule. please??
March 30, 2015

Science for ms. Sue
hey im here to help and uh Like bob said as you get closer the high voltage will jump as you have a short distance it will decrease so the answer is. B
March 2, 2015

physics
A 100kg shot putter is putting a shot 4kg. Just before he releases the shot, he is in the air (feet are off the ground). At this instant, the only force he exerts against the shot is an 800N horizontal force directed forward. a-what is his horizontal acceleration at this ...
March 1, 2015

physics
Grant accelerates a 1kg ball 5.0m/s2 horizontally. The vertical acceleration of the ball is zero. The force of gravity is the only external force acting on the ball other than the forces Grant exerts on it. a-How large is the horizontal force grant exerts on the ball at this ...
March 1, 2015

Physics
I don't understand how you got that solution. Could someone please elaborate? PLEASE
February 21, 2015

physics
A block of wood with a mass of 1300g is sitting on a horizontal tabletop. The coefficient of kinetic friction between the block and table is µk=0.74.A rifle bullet with a mass of 39g is fired horizontally into the block at a sped of 290m/s and stops inside the block. a-...
February 19, 2015

Science
This is pathetic okay fine all help you BUBBLES 1. A is the north pole and B is the south pole 2. the paper clips are within the magnetic field of the magnet 3. the two exposed sides of the magnets have similar poles 4. true
February 19, 2015

PHYSICS
A variable length air column (closed on one end) is placed just below a vibrating wire of mass 5.00g, which is fixed at both ends. The length of the air column is gradually increased from zero until the first position of resonance (first harmonic) is observed at 34 cm. The ...
February 11, 2015

Chemistry
A 76.00-pound flask of mercury costs $132.00. The density of mercury is 13.534 g/cm3. a) Find the price of one cubic inch of mercury by calculating the following intermediate values.
January 28, 2015

Algebra 2
Let f(x)-5x+3 and g(x)=6x-2 find the f x g and it's domain
January 14, 2015

chemistry
what quantity of ice would be melted by 2.80 x 10^3 calorie of heat.
January 11, 2015

College Algebra
Tiffany purchased a $10,000, 13-week Treasury bill that's paying 2.25%. What is the effective rate on this T-bill?
January 8, 2015

Math
Tiffany purchased a $10,000, 13-week Treasury bill that's paying 2.25%. What is the effective rate on this T-bill? A. 2.26% B. 2.2% C. 2.0% D. 2.7%
January 5, 2015

Math
Jill traveled to Canada and bought a new lamp for $460 Canadian dollars. In U.S. dollars (to the nearest cent) this is equivalent to
December 28, 2014

music
A. First
November 18, 2014

Chemistry
The question has been answered years ago but not how it is solved. I tried the combined gas law. Here is the question: A balloon originally had a volume of 4.39 L at 44 degrees celsius and a pressure of 729 torr. The balloon must be cooled ??? to reduce its volume to 3.78 L at...
October 30, 2014

algebra
Ms. Baldwin likes to eat cookies. She eats 3 cookies per day. After 5 days, there are 24 cookies left in the box. Write an equation represents the story in y=mx+b form
October 28, 2014

algebra
x-(15)=24 add 15 both side x=39
October 28, 2014

algebra
Ms. Baldwin likes to eat cookies. She eats 3 cookies per day. After 5 days, there are 24 cookies left in the box. Write an equation represents the story.
October 28, 2014

math
what is the expanded form for 408,032,009
October 20, 2014

English
So subject, verb direct object, and indirect object
October 8, 2014

English
Identify the sentence pattern used below. I e-mailed my English Teacher my essay. My answer is subject verb
October 8, 2014

Algebra
-z/3<= 6 My answer is z>= -18
October 4, 2014

Algebra
Thank you very much. We have been working with these and we learned that addition and subtraction the signs stay the same and change on multiplication and division
October 4, 2014

Algebra
-5y <= -15 My answer is y>=3
October 4, 2014

Algebra
thank you
October 4, 2014

Algebra
Everyone in my family uses this internet address so it's possible some else in the family used it. Thank you for your help.
October 4, 2014

Algebra
Ms. Sue, who is Sandy?
October 4, 2014

Algebra
How did that name get on my post? It is traveling at 30 ft per second and I used d=(110-30 ft) I formulated the start point at 2.3 seconds I'm just not sure of the duration or ending time.
October 4, 2014

Algebra
Start from 110 feet away, a person on a scooter rides towards a checkpoint and then passes it. At what times is the scooter 40 feet away from the checkpoint? My answer is 2.3 to 4.6 seconds
October 4, 2014

Algebra
Suppose U = 1,2,3,4,5,6,7,8 is the universal set and P = 1,3,5,7, What is P? My answer is 1,3,5,7
October 4, 2014

Algebra
If n is the set of natural numbers that are factors of 16, what is the set in roster form? My answer is 1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16
October 4, 2014

health
Veins carry blood ________ the heart A. Away from B. Towards C. Neither A or B D. Both A and B c
September 23, 2014

Chemistry
The formate ion, (CHO2-), is related to the acetate ion and forms ionic salts with many metal ions. Assume that 9.7416 g of M(CHO2)2 (where M represents the atomic symbol for a particular metal) are dissolved in water. When a solution of 0.200 M sodium sulfate is added, a ...
September 19, 2014

Chemistry
CHO2^- + KMnO4 > CO3^2- + MnO2 How are you supposed to balance the equations since there is no K in the products?
September 19, 2014

Chemistry
The formate ion, (CHO2-), is related to the acetate ion and forms ionic salts with many metal ions. Assume that 9.7416 g of M(CHO2)2 (where M represents the atomic symbol for a particular metal) are dissolved in water. When a solution of 0.200 M sodium sulfate is added, a ...
September 19, 2014

Geometry
is 2 correct for X?
September 1, 2014

Geometry
ok, I got X = 2
September 1, 2014

Geometry
Point J is between H and K on line segment HK. use th given information to write an equation in terms of x. Solve the equation. Then find HJ and JK. HJ=(x/4) JK= 3x - 4 KH = 22
September 1, 2014

Programming concepts
Develop a menu-driven program that inputs two numbers and, at the user’s option, finds their sum, difference, product, or quotient. top-down modular approach and pseudocode to design a suitable program to solve it. I am having so much trouble with this I got two zeros ...
August 1, 2014

math
selling price of computer is $75 less than 2 times wholesale price. selling price of a tv is $550, what equation is used to find wholesale price of tv
May 19, 2014

Chemistry
calculate the pH of a solution after .054 moles of KOH is added to a 1.0L buffer solution of .25M HF (Ka=7.1 x 10^-4) and .10M KF
April 24, 2014

math
Benjamin is a professor at a college and wants to know how big classes at his school. To do this, he takes a random sample of 20 classes and counts how many students are in each one: 30, 45, 12, 15, 18, 35, 40, 100, 45, 54, 85, 90, 34, 54, 21, 22, 42, 13, 15, 19. What percent ...
April 8, 2014

science(check answers)
Are you serious this is the easy stuff Dont listen to Anonymous the correct answers are. 1.D 2.A 3.A 4.B And yes it is false
March 31, 2014

Chemistry
I don't really understand how to do this problem, or where to start exactly. Can someone explain to me where to start and how I can solve the problem in a step by step process? Thank you in advance! 1. An acetic acid / sodium acetate buffer solution is also 0.020 M AlCl3. ...
March 25, 2014

Math-Algebra 1
I have 2 questions. one is a rectangle that has an area of 34 square meters, the width is (x+4)m and the length is (x+11)m. The other problem is a triangle that has an area of 119 square ft. The legs are (x+3) ft and (x+6) ft. It has a right angle opposite the hippotenuse. ...
February 24, 2014

math(check answers)
all answers are right matt nice job
February 4, 2014

socialstudies(CHECK ANSWERS)
9. D
January 27, 2014

Algebra I
volume of a basketball is 448.9 cubic inches. with the formula V=4/3(pie)radius(cubed) for the volume of the ball, find the radius of the basketball
January 20, 2014

math
in some cars the rear seat folds down to add more space. Often this split is a 60:40 split. If the rear seat is 60 inches wide, how wide are the two parts?
January 1, 2014

science
A biologist studying a desert ecosystem observes that the population of a lizard species increases following a particularly hot, dry period that causes a snake population to decline. What could the biologist hypothesize about the roles of these two species? A.The lizard preys ...
December 13, 2013

science
I think the answer is D.
December 13, 2013

science
which of the following could be true of two different species that have a competitive relationship in the same ecosystem? A.one species preys on the other B.they relationship is mutually beneficial C.they share the same niche D.one species benefits, while the other is neither ...
December 13, 2013

science
A salamander is a keystone species in a forest ecosystem with high biodiversity. This species migrates from woodland areas to a local stream to reproduce. If a road is built that cuts off the woodland areas from the stream, what effect will this have on the forest ecosystem? A...
December 13, 2013

science
D?
December 13, 2013

science
About keystone species and renewable resource
December 13, 2013

science
What determines the carrying capacity of a particular population by an ecosystem? A.keystone species B.pioneer species C.limiting factors D.renewable resource
December 13, 2013

science
It has to be B then.
December 13, 2013

science
Is it D?
December 13, 2013

science
Is it a?
December 13, 2013

science
What is true? A.biodiversity provides additional that raise the carrying capacity of an ecosystem B.biodiversity increases an ecosystem's ability ti withstand changes C.biodiversity makes an ecosystem more difficult to destroy D.biodiversity provides additional sources of ...
December 13, 2013

science
What determines the carrying capacity of a particular population by an ecosystem? A.keystone species B.pioneer species C.limiting factors D.renewable resources
December 12, 2013

science
Is Damon right?
December 12, 2013

science
Which one? Help! local plants and animals are less apt to be endangered local species require less energy to grow reducing the purchase of distant species means they are saved from being used for food reducing drilling for oil to supply transport fuel reduces the impact on ...
December 12, 2013

science
why does buying food that is grown in your local area help prevent loss of biodiversity?
December 12, 2013

science
What is a form of pollution triggered by a formation of a gas and can have dramatic effects? fog pesticides acid rain oil spill
December 12, 2013

science
bicycle
December 12, 2013

science
Use of which of the following does not contribute carbon dioxide to the environment? refrigerator charcoal grill computer bicycle
December 12, 2013

science
The third one?
December 12, 2013

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