Monday
July 28, 2014

Posts by jake


Total # Posts: 1,727

Science
The significance of specific base pairing in DNA is that A) it stabilizes the sugar molecule B) it provides a method for making exact copies of DNA C) it prevents errors in DNA replication D)protein copies can be be made directly from the DNA I'm pretty sure the answer is ...

Chemistry
0.88 g CO2

Chemistry
0.88 g CO2

world history
Which of the following statements is true of the Ice Age that began 150,000 years ago? A. Many humans enjoyed high levels of nutrition and long days of leisure. A is the answer

world history
men go hunting women gathering

science
what would the astronauts weight be on the lunar surface?

science
what would the astronauts mass be on the lunar surface?

science
how much less is the gravity on the lunar surface than on earth?

chemistry
in a exothermic reaction temperature changed from 30 to 43, reasons why I got those answers

Math 113
Verify tanxsin2x = 2-2cos^2x

Algebra
how do i solve this please help 5 < x – 2 < 11

math
39+42

English- Scarlet Letter
Hester thought there was three changes that need to be made before young women were able to take there stand next to men as equals. What are the three chnges she was referring to? Relate this philosophy to today's society. Use specific examples. Which of these three steps ...

Science (urgent)
I have 2 biology questions I really need help with, they are due tommorow and I don't know if I'm right. 1)As an energy carrier, ATP differs from NADPH in that: a)ATP carries less energy than NADPH. b)ATP transfers energy through redox reactions whereas NADPH uses phos...

COLLEGE
THANKS! :D I'm going to tell them I won't give up on my dreams but I hate it how they're always telling me to be a doctor or I'm going to have a bad career and won't live a good life

COLLEGE
My parents say I should be a doctor but I want to be what I want. They're forcing me to be one cause the rest of my family is. WHAT SHOULD I DO? D:

in-text citations
If I have an internet article, how would I do an MLA in-text citation of the article. There's no page number. Would I just put the author's last name only in parentheses? I've googled it, but I couldn't find anything,

Physics
Betty Bodycheck (mB = 55.1 kg, vB = 22.0 km/h in the positive x-direction) and Sally Slasher (mS = 41.2 kg, vS = 28.0 km/h in the positive y-direction) are both racing to get to a hockey puck. Immediately after the collision, Betty is heading in a direction that is 76.0° c...

Science (urgent)
K thank you very much and actually that's how the question was written which threw me off completely. (I think it stands for chemical reaction, it was random to see though). Thank you for your help though. I understand it much better now!

Science (urgent)
Hi I really need to know this I've asked a couple times but haven't gotten an answer yet. In the reaction X + Y ® Z, Z is the A) substrate. B) product. C) enzyme. D) carbon molecule.

Science
In the reaction X+Y (R) Z, Z is the A)Substrate B)Product C)Enzyme D)Carbon Molecule

calculus
A rocket is fired into the air, and its height in meters at any given time t can be calculated using the formula h(t) = 1600 + 4.9t^2. Find the maximum height of the rocket and the time at which it occurs.

Phycics
Determine the resultant at 21N east and 85N south

Science
Imagine you find a piece of wood on the beach. The next day, the wood is 100 meters farther north. How might it have moved? Your answer should refer to currents

math
john had 15 dollars more than half of what jack had. john had 86 dollars. how much did jack have?

Math/Statistics
STATISTICS PLEASE HELP!!!!! I am sorry this is jy second time posting, but I really need help. I have tried contacting my teacher and classmates with no luck. Please just steer me in the right direction!: Suppose cars arrive at Burger King's drive-through at the rate of 20...

Statistics
Suppose cars arrive at Burger King's drive-through at the rate of 20 cars every hour between 12:00 noon and 1:00 pm. A random sample of 40 one-hour periods between 12:00 noon and 1:00 pm is selected and has 22.1 as the sample mean number of cars arriving. (a) Why is the sa...

physics
i think this is a pre-calculus question

Calculus
If the tangent line to y = f(x) at (4, 3) passes through the point (0, 2), find f(4) and f'(4).

Calculus
If the tangent line to y = f(x) at (4, 3) passes through the point (0, 2), find f(4) and f'(4).

english
Oops I didn't mean to use that sentence i was just using it as guidance, anyways is the rest ok ?

english
hi can you please proof read this and make sure it sounds alright. thanks. Playboy of the Western World is a novel that invoked hostility from nationalist crowds in Dublin. Throughout the book there were several occasions where violent reactions could have occurred as well. Th...

English
Yep I have read it, I would say that's the most significant characteristic for violent reactions, I'm having trouble locating more in the book besides that. Thanks

English
In Playboy of the Western World by J.M. Synge what are some characteristics or moments that would invoke a violent reaction in todays culture?

ten commandmant
Sure, but chaos is total freedom

ten commandmant
I don't know what you mean. True freedom means a lack of rules and regulations. The Ten commandments restrict your freedoms by telling you the way you are supposed to live. The morality involved is up to your judgement, but their intention is to make you live by certain ru...

Physics
The braking distance of a car is 29m. If the speed of the car is increased by 45%, what is the car's new braking distance? Assume the acceleration of the car is constant and independent of its initial speed

geometry
Lines AB and CD are parallel. If the measure of Y equals 56°, what is the measure of Z?

math
.5

English (Urgent)
Hi I'm writing an essay about No-No Boy. Does the following sentence sound alright, if not how do I make it sound better. I need help soon please! Two significant problems in this novel for him is overcoming self blame along with dealing with culturally assimilating himsel...

English
Hi I'm writing an essay about No-No Boy. Does the following sentence sound alright, if not how do I make it sound better. Two significant problems in this novel for him is overcoming self blame along with dealing with culturally assimilating himself to America.

English
Hi, I have to write a 2 page paper about the book No-No Boy, rather than give a plot summary the teacher wants us to discuss important themes. What are some possible topics I could write about and how do I not make the paper turn into a plot summary? Thanks.

social studies
number 2 is vladimir

pre algebra pizzazz
2x+3y=6

math
I Don't know, it was our teacher who typed the questions.

math
Given the formula X=x to the power of 2 + y to the power of 2 can you find X if x=9,y=negative 4,z=1/2?

Calc
Find the constant of proportionality for the following situation: "y is jointly proportional to x and z and inversely proportional to w." w=2, x=5, y=4, and z=9 So i think the equation is y=xz/w But what is the constant of proportionalit supposed to mean?

Math
A person can have 1 of 4 blood types: A, B, AB, or O. A Student determined that the probability that a randomly selected person has blood type O. What is wrong with his reasoning?

Microeconomics
yes

science
How many hydrogen atoms are in a molecule of C8H10N4O2? wouldnt it just be 10?

Science
How many hydrogen atoms are in a molecule of C8H10N4O2? wouldnt it just be 10?

math
One day we decided to drive from Town A to Town D. In order to get there we had to drive through Town B and then Town C. It is 10 miles farther from Town A to Town B than it is from Town B to C. IT is 10 miles farther from Town B to Town C than it is from Town C to Town D. It ...

English
Oh alright, should I ask someone specific or just keep checking back?

English
Alright thank you. I was wondering does the title of the book have to be underlined or in quotes and is the following a good way to start my essay? America is in the Heart is a classic autobiography that truly exhibits the struggle of immigrants that ventured to the United Sta...

English
Hi, I have to write a short reaction paper (2 pages) about the book America is in the Hearth by Carlos Bulosan. I have to discuss an important theme and provide examples. I was thinking about comparing his life in the Philippines and his life in America. Even though he had hig...

chem (science)
Which of the following pairs of elements are likely to form ionic compounds: A) helium and oxygen B) magnesium and chlorine C) chlorine and bromine D) potassium and sulfur E) sodium and potassium F) nitrogen and oxygen I believe the answer is d and f Would appreciate a verific...

science
Which of the following pairs of elements are likely to form ionic compounds: A) helium and oxygen B) magnesium and chlorine C) chlorine and bromine D) potassium and sulfur E) sodium and potassium F) nitrogen and oxygen I believe the answer is d and f

algebra
For all positive integers x, let x▲ be defined to be (x-1)(x+1). Which of the following is equal to 6▲ - 5▲ ? Does this mean I'm supposed to multiply the 6 and the 5 to (x^2-1) and subtract them from each other?

chemistry
A freshman studying medicine at an Ivy League College is a part of his class crew team and exercises regularly. After a particularly strenuous exercise session, he experiences severe cramps in his thighs and pain in his biceps. Explain the chemical process that occurred in hi...

chem
A block of metal has a width of 3.2cm, a length of 17.1cm, and height of 3.6 cm. Its mass is 1.3 kg. Calculate the density of the metal.

chem
The speed of light is 3.00 times 10^8~m/s. How fast is this in miles per hour (miles/h)? Use the conversion 1{mile} = 1610{m}.

chem
The speed of light is \rm 3.00\times 10^8~m/s. How fast is this in miles per hour (\rm miles/h)? Use the conversion 1 \;{\rm mile} = 1610\; {\rm m}.

PreCal
Alison, Could would you tell me if the problem listed below is correct: (4+5i)(4-5i)= 16+-i

PreCal
Write the expression (7 – 7i) + (–8 – 2i) in the form a + bi

literature
a villnelle is?

Statistics - Probability
Yes you definitely do need 1-0.93. Psydag, you are correct!

college chemistry
thank DrBob!! Your the best!! :)

college chemistry
Why is iodine important to biological tissues such as the thyroid gland? Give a prediction for why iodine is added to the table salt supply. ** I have no idea! :(

Math
i dont know how to solve this, i'm so lost. determine the exact value of c cot( 4c- pie/4) + tan ( 2c + pie/4)= 0 please help me!!! THANK YIU

Chemistry / Elements
if fluoride is considered toxic, then why do they put it in tooth paste and municipal drinking water supplies?

calculus
actually, as i was taught that using 1/3 as a decimal should just be .3 too & i see what tonya did! haha .8x comes from the addition of .3x+.5x. simple addition...

american history
d is the answer

science
Sarah needs to replace part of the metal railing on her deck and wants the new railing to match the existing railing. However, she does not know what metal the railing is made from. Which is a property that she can use to identify the metal?

grammar
i am having a hard time figuring out the adverbs and adjectives in my paragraph, can anyone help me with this? A few years ago, I had filled out an application for a credit card from capital one. I was accetped and given a spending limit of 300 dollars. I maxed out that limit ...

Chemistry
how would I make 5.5 liters of a 2.5 molar HCl solution from a 10.5 molar HCl stock solution?

chemistry
I dont know

Greek
The Greek base which means to burn is Cla- Path- Sat- Cau(s)-

Calculus AB
That makes me feel so much better. It must have been an error on the teacher's part then. Thank you very much.

Calculus AB
The limit as x approaches infinity of (1+1/x)^x. I tried this twice and I got an answer of e both times, but the answer that my teacher read off in class was not e. Please help.

algebra
a cardboard box which has a volume of 60 cubic inches and has the dimensions of (x-1) (x-6) (x-2) what is the lenght, width and height of the box

For
What are the 3 base languages in Europe? I know there's Slavic, Romance which is Italian and French, but I can't remember the last one. Help!

Math
The moon has a surface area of approximately 14,650,000 mi squared. Estimate its radius to the nearest mile.

math
Simplify 5(y + 1)

chemistry
Identify the acid/conjugate base and base/conjugate acid pairs for the following reactions H2CO3(aq) + H2O(l) <===> H3O+(aq) + HCO3 -(aq) C5H5N(aq) + H2O(l) <===> C5H5NH+(aq) + OH-(aq

Chemistry
# Electron Pairs # Lone Pairs Electronic Geometry Molecular Geometry Lewis Structure Sketch of Shape I need to do the above things for SBr6 and BrCl5. If anybody can help that would be great!

algebra
Minimum Wage: The table shows minmum wage for three different years Year 1940 1968 1997 Wage ($) 0.25 1.60 5.15 (a) Make a scatterplot of the data in the viewing rectangle [1930, 2010, 10] by [0, 6, 1] (b) Find a quadratic function given by f(x) = a(x – h )^2 + k that mod...

Chemistry
Construct the data chart and the pH curve for the titration of 25 mL of 0.1 M CH3COOH with 0.1M NaOH. Add the titrant 1 mL at a time and calculate the pH after each addition

chemistry
balance the redox equations: IO3-(aq) -> I2(aq) and I-(aq) -> I2(aq) balance the redox equation: S2O3(-2) -> S4O2(2-) and I3- -> I-

Science
Both gases will have approximately the same density at these conditions. When the volume is held constant, raising the temperature will increase the density of both samples.

Calculus AB (AP)
Hi, I have a calculus test tomorrow and I understand how to complete all of the problems, but I am unsure behind the reasoning of taking two derivatives. Can someone please explain the following: 1. g(x)=e^(f(x)) g'(x)=e^(f(x))f'(x) 2. f(x)=Integral from 0 to 3x of the...

chemistry
ferric hydroxide is insoluble same with manganese hydroxide

chemistry
the reaction with ammonium hydroxide with the following metals: Fe3+ Mn2+

chemistry
what is the reaction with sodium hydroxide for the following metals: Al3+ Fe3+ Mn2+ Ni2+ Zn2+

Math
how would I make a tslly table for the number of students in th third, fourth, and fifth-grade classes: 26, 25, 27, 27, 26,28,27

math
please answer i need it by next class...

math
A line segment has an endpoint at (3,2). If the midpoint of the line segment is (6.-2), what are the coordinates of the point at the other end of the line segment?

Math
Can a golden rectangle have a shorter base than height? I'm not sure how to answer this can you please help :)

Chemistry
I can't figure out how to solve this problem: The Ka for hydroflouric acid is 4.5 *10^-4 at 298K. Calculate the amount of sold NaF that is required to prepare a 250. mL acidic buffer with pH = 2.75. The initial molarity of hydroflouric acid is .250M but you have only 75mL....

Chemistry
The Ka for hydroflouric acid is 4.5 *10^-4 at 298K. Calculate the amount of sold NaF that is required toprepare a 250. mL acidic buffer with pH = 2.75. The inital molarity of hydroflouric acid is .250M but you have only 75mL.

Speech Class
Thank you mam :)

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