Posts by Amanda
Total # Posts: 2,621

Biochem
We will need 0.5L extraction buffer with 25 mM HEPES, 1 mM EDTA, and 1 mM DTT. Please calculate how many grams of each solute are needed. (HEPES 238.3; EDTA 292.2; DTT 154.2) 
small engane
FIGURE A9—This photo should be used to answer Question 15. 15. Two small engine technicians are disassembling the engine shown in Figure A9. After observing the engine components, both technicians say that this engine has a splashtype lubrication system. Technician A ... 
Physics
Identical point charges of +2.9 µC are fixed to three of the four corners of a square. What is the magnitude of the negative point charge that must be fixed to the fourth corner, so that the charge at the diagonally opposite corner experiences a net force of zero? 
Physics
A hydrogen atom has a diameter of about 10.1 nm. Express this diameter in meters. 
Introduction to Physical Science
thank you getting the hang of this 
Introduction to Physical Science
How do you calculate the wavelength of the radio waves that are produced is 561 m, when electrons on a radio broadcasting tower are forced to oscillate up and down an antenna 535,000 times each second. 
economics
the south african government is not providing enough welfare or subsidies to poor and underpriviledge? 
Algebra 1Math
There's a table that says Company A charges $0.36 plus 0.03. And Company B charges $0.06 per minute. The question Im having problems with are: How long is a call that costs the same amount no matter which company is used? Be sure to show your thinking? 
vocabulary
___________definitions are subject to individual interpretation. 
algebra for business
As an entrepreneur, there are going to be many decisions that you need to make, such as the price to charge your customers for your goods and services. You have just graduated from college and recently opened a specialty pizza restaurant. Based on surveys conducted in your ... 
geometry
A cross country race course on flat ground has runners heading from point A for 3.5 km on a bearing of 047degT to point B. From point B they turn and run for 2.8 km on a bearing of 342degT to point C. They then run back to point A. Determine the Distance from C back to A. 
Statistics
If 1000 raffle tickets were sold for a TV prize that is worth $275 and a ticket number is drawn to determine the winner, what is the expected value of the raffle? 
Trigonometry
solve for all possible x in [0,2pi): (cscx+2)(cscx√(2))=0 
Math
P(7<x<9) when mu=7 
Math
If P(F)=0.3, P(E or F) =.65 and P(E and F)=.15, find P(E) 
Applied Geometry maths
How would I find out how far away from the base of the tower she was when she made her first measurement of 15deg20' 
Geometry
40. Find the surface area of a conical grain storage tank that has a height of 42 meters and a diameter of 20 meters. Round the answer to the nearest square meter. (1 point) 3,028 m2 3,971 m2 1,357 m2 1,671 m2 
math
.72222 
Writing help!
1.In the bitter cold, (he, him) and Dad struggled to save the orange crop. My answer:he 2. (Her and me, She and I) have joined the Shutter and Lens. My answer:she and I 3. Phil showed Danny and (I, me) his butterfly collection. My answer:me 4. Bert warned Hank and (I, me) ... 
Writting
Imagine that you are an agent who is interested in publishing new authors. Choose any book you like and present the book to a publisher in New York. You want to be the person responsible for putting the book on the shelf. You should convince the publisher that the book is well... 
Economics
Explain the difference in prices for each of the following pairs of goods in terms of the laws of supply and demand: (a) natural diamonds and zircons (humanmade diamonds), (b) a loaf of bread baked today compared with dayold bread, (c) roses in January and roses in June. ... 
Writting
Persuasive Writing Assignment: Imagine that you are an agent who is interested in publishing new authors. Choose any book you like and present the book to a publisher in New York. You want to be the person responsible for putting the book on the shelf. You should convince the ... 
L.o
Human or environmental problem under substance abuse. The impacts 
Algebra
x14/x1=42x/x1 
math
oh yeah it says to simplify but I have no clue at all as to how to do this it is a complex number problem I think does anyone know how to do this?(im the one that posted the question) 
math
10i(5+8i) 
math
im not really sure but maybe itslike a month because the way I put it in my calculator Is 1200/0.07=17142.85714 but im not good at math so idk. I tried at least 
science
what may happen to an ecosystem if nonliving factors change or if one more populations are removed from or added to the ecosystem? 
Math
Solve. 10/(3x) + 4/3 = (7 + x)/2x A) x = 1/3 B) x = 17/5x C) x = 1/5 D) x = 1/6 help?? 
math
a football team gained 12 yards on one play, lost 40 yards on another and gained 34 yards on the last play of the first half. they had already gained 345 yards during the half. what was the total yardage gain for the first half? 
History
According to King, how did the Vietnam War affect U.S. policy at home? Please I really need Help i'm taking a test! 
algerbra
solve the equation step by step list each step along with the property you used during that step 5*1*11*4 
math
what is a verbal rule in math? 
Math
me to 
Life science, business,maths literacy
if you can change maths lit 2pure you can becm social workr 
Life science, business and maths literacy
my name is amanda and am doing grade 12 at school am doing business,life sciences,geography and maths lit so what i want to know is the career that is suitable for these subjects 
Math
THANKS!! CONNEXUSS STUDENTS UNITEE 
Chemistry
What mass of sodium oxide is produced from 4.23 grams of sodium and 20 liters of oxygen gas? 
Chemistry
How would you know how to do this problem without knowing Slater's rule? we've yet been taught that rule so I'm not sure how else I would figure it out. 
7th Grade Social Studies
THIS QUESTION HS BEEN GOING FOR 3 YEARS LOL THANKS GUYS FOR THE ANSWERS 
7th Grade Social Studies
mudda answer for u is right i swear i just took the test and got 100% 
science
Do your own work please 
science
can you describe the process of cellular respiration.include the words:sugar,energy,carbon dioxide,and water 
math
and what would 0.1875 be as a fraction? 
math
can someone tell me what would 0.0625 be as a fraction? 
Chemisry
Why wouldn't it be KBr? Why are the twos added? How come its not just K + Br ==> KBr since their charges cancel out? Help! 
AP chemistry
1). In a titration 20 mL of 0.100 M of HCl is added to 50.0 mL of 0.150 M of ammonia. A). What is the pH of NH3? B). What is the pH of the resulting solution? HELP :( 
Algebra
So its geometric sequence. 
Algebra
His answer is totally wrong. each term is is being multiplied by 2. 
4th grade math
there are 12 inches in a foot so 14x12=168 
socials please check
i believe 5 
Chemistry
D the Keq expression of the 2nd one is = to (1/the first Keq expression)^(1/2) so take the answer of the first Keq, 5.4x10^13 and put it in that equation (1/(5.4x10^13))^(1/2)=1.36x10^7=1.4x10^7 
Chemistry
hydronium is [OH] ions, so you looking for the Ph that is most basic, which is your highest number 12.6 
Socials please check my answers
that's correct 
math
1.0425^12? if so the answer is 1.6478 
12Chemistry
useing them maybe.. but i don't think they would bond them.. there specialty is teeth.. i only know about pharmacy because that's my intended major next year 
12Chemistry
pharmacy, compounding not retail 
Math
greater because theoretical would be 40 of 80 since there are 2 choice (heads or tails) 
math
# of pennies/# of all coins 12+6+4+8=30 12/30=2/5 
math ALG 2!
i've answered like 10 of these for you... you should be able to figure out how this works by the past problems if you really don't understand the process 
math ALG 2!
38900 
math ALG 2!
x10^6? if so.. 4,250,000 
math ALG 2!
scientific notation helps make very large or very small numbers easier. for very large numbers you move the decimal place as many spaces to the left to leave you with one # on the left. you then take the # of spaces you moved and times it by 10^that number. You do the same for... 
math ALG 2!
2.1x10^7 
math ALG 2!
7.4*10^6 
math ALG 2!
2.3*10^7 you move the decimal place over till you have a number between 1 and 10 you then times it by 10^ number of spaces you moved over 
Math
5b+9m=150.5 9b+5m=175.7 if you add them you have one equation. 14b+14m=326.2 14(b+m)=326.2 b+m=23.3 b=23.3m sub. this back into one the original equations 9(23.3m)+5m=175.5 209.79m+5m=175.5 4m=34.2 m=8.55 Plug that into the other equation 5b+9(8.55)=150.5 5b+76.95=150.5 ... 
chem
sorry read it wrong, doing this now in chem 
chem
PH=log(ka)+log(base/acid) 4.8=log(1.8*10^8)+log(x/.15) 4.8=7.7447+log(x/.15) 2.9447=log(x/.15) .001135=x/.15 x=1.875*10^4 
AlgebraB2
1. what graph? 3. 2x24 is 4 units below 2x2 4. wich func.? 
Calc
f(x)=2ln(x^2+3)x Domain [3,5] how do i find the absolute maximum value of this? 
Algebra
Angel 4 was c 39 48 57 not b 
math mrs sue please help
Find the property of the real numbers which will complete the argument below: 1. Zero is not a positive number. 2. Choose x as the smallest number. 3. The ________ property tells us that _________. 4. Therefore, between x and 0 there will be a third number, smaller than x. 5. ... 
Algebra 1
Find the property of the real numbers which will complete the argument below: 1. Zero is not a positive number. 2. Choose x as the smallest number. 3. The ________ property tells us that _________. 4. Therefore, between x and 0 there will be a third number, smaller than x. 5. ... 
english
Dirty idea nerve 
eng1511
Need points so I can write an argumative essay 
eng1511
The sure solution of unemployment is a better quality of education 
ENG1511
Where is the passage cos u were suppose to copy n paste it 
Math
ln24  ln6 
PreAlgebra
1. D clustering 2.a postive 3.d none of these 4.b linear 100% pass ! Hope this help! 
ENG1511
I wanna write 2 but have no clue where to start 
World History
History and Geography Activity 12 what page is this on? 
College Algebra
Write the equation of the circle in standard form. Find the center, radius, intercepts, and graph the circle. x^2+y^2+16x18y+145=25 
English
Thanks for you your help. 
English
choices...curtail,devastate,digress,incentive,incorporate,indispensable,intermittent,rigor,squander,succumb here is the sentences: 1,2:Duane feels he ____(e)d too many years in inactivity, so now he welcomes the _______s of an exercise program. 3,4. The company decided to ... 
English
I don't know what I think that is why I am asking for help ! 
English
Here is my choices...curtail,devastate,digress,inceantive,incorporate,indispensable,intermittent,rigor,squander,succumb here is the sentences: 1,2:Duane feels he ____(e)d too many years in inactivity,so now he welcomes the _______s of an exercise program. 3,4.The company ... 
english
Willie is a ________ on our school. Not only does he start fights with opposing players on the basketball court, but he also _______s after he's benched. as if he's prode of causing such turmoils. In fact,although he's a great player, the coach is pondering kicking... 
English
The little girl was so___ after her illness that her parents carfully____(e)d fattening meals that were sure to arouse her appetite. Willie is a ________ on our school. Not only does he start fights with opposing players on the basketball court, but he also _______s after he&#... 
english
After the bully struck him, Jules wanted to________ by throwing a rock, but he had______s about doing anything so dangerous. 
english
What is the adjective in the sentence "The red truck was parked behind the garage"? A. red B. truck C. behind D. parked 
math
6x=36 
PHYSICS HELP!!
3.) Draw a free body diagram of a boat being pulled at an accelerated rated by a truck down a highway. 
PHYSICS HELP!!
#2.) Draw a free body diagram for the following situation: a.) A 0.15 kg running shoe is pushed to the right, with a constant velocity, across a wet concrete floor with an applied force of 3.5 N. b.) Calculate the normal force exerted by the concrete onto the running shoe. 
PHYSICS !!!HELP
#1.) If the force of gravity on a human is 539 N determine the mass of the human. 
Math
An airplane is flying due west at a velocity of 100 m/s. The wind is blowing out of the south at 5 m/s. What is the magnitude of airplane's resultant velocity? 
Physics
During the second stage of a rocket launch the rockets upward velocity increases from 980 m/s with an average acceleration of 33 m/s (upward). How long did the acceleration last? 
Physics
A boat which travels 100 km (N), then 40 km (N), and finally 80 km (S). The entire trip takes 6.5 hours. A.) Calculate the total displacement of the boat B.) calculate the velocity of the boat 
Physics
In the human body, blood travels faster in the largest blood vessel, the aorta than in any other blood vessel. Given an average speed of 30 cm/s, how long would it take the blood to travel 5 cm? 
Physics
Classify the following measurements as scalar of vector quantities. A.) 15 s B.) 4.2 m ( up) C.) 100 km/h (S) D.) 2.8 kg