nic
Most popular questions and responses by nic
calculus
please help. Compute Δy and dy for x = 4 and dx = Δx = 0.2. (Round the answers to three decimal places.) y = 4x  x2....im lost to were to start solving for delta y
asked on February 26, 2011 
College algebra
Allison drove home at 58 mph, but her brother Austin, who left at the same time, could drive at only 40 mph. When Allison arrived, Austin still had 108 miles to go. How far did Allison drive?
asked on September 13, 2013 
PHYSICS!!
Comet Halley returns every 74 years. Find the average distance of the comet from the sun. How do i do this??
asked on January 16, 2008 
chemistry
How many moles of O2 are needed to react with 2.90 moles C2H2
asked on October 16, 2010 
calculus
Choice 1: Payments of $ 2600 now, $3000 a year from now, and $3450 two years from now. Choice 2: Three yearly payments of $ 3000 starting now. Interest is compounded continuously. (a) If the interest rate on savings were 4.76 %,which would you prefer? (b)
asked on September 16, 2010 
physics
A person with a density of 980 kg/m3 floats in seawater of density 1025 kg/m3. What fraction of the person is submerged?
asked on November 26, 2012 
physics
A 33 N force acting at 90° and a 44 N force at 60° are applied concurrently at a point P. What is the magnitude and direction of the resultant force?
asked on November 18, 2010 
maths
kathleen spent 5/8 of her money and had 15e left how much had she at the start
asked on November 27, 2012 
History
Please Help Quick Which statement does not accurately describe the Black Death that struck Europe in the fourteenth century? A. The effects of the plague stopped all advancements in science and medicine for the next two centuries. B. Most people in Europe
asked on June 6, 2019 
Physics
Two forces, 395 N at 11◦ and 344 N at 34◦ are applied to a car in an effort to accelerate it. (3049 kg is the car) What is the magnitude of the resultant of these two forces? Answer in units of N.
asked on November 18, 2018 
Chemistry
The halflife of Th232 is 1.4E10. Find the number of disintegrations per hour emitted by 1 mol of Th232.
asked on April 10, 2014 
calculus
please help i am lost at what is dy/dx and what is dy/dt. A trough is 10ft long and its ends have the shape of isosceles triangles that are 3 ft across at the top and have a height of 1ft. If the trough is being filled with water at a rate of 12ft^3/min,
asked on February 25, 2011 
algebra
I need to write an equation for the following: Denise's cell phone plan is $29.95 per month plus $.10 per minute for each minute over 300 minutes of call time. Denise's cell phone bill is $99.95. For how many minutes was she billed?
asked on October 21, 2010 
physics
A 70 kg man holding a 0 . 857 kg ball stands on a frozen pond next to a wall. He throws the ball at the wall with a speed of 11 . 9 m / s (relative to the ground) and then catches the ball after it rebounds from the wall. How fast is he moving after he
asked on May 7, 2014 
algebra
what is the equation of a hyperbola with one vertex at (6,5) and the equation of asymptotes are 5x6y30 and 5x+6y30?
asked on November 7, 2010 
Algebra
A tank contains 1200 litres . A tap is turned on and 40 litres of water escape each minute. How much water has escaped in 12 minutes.
asked on August 27, 2014 
Math 10th grade
five marbles in a jar are green. the odds against choosing a green marble are "4:1" how many marbles are in the jar
asked on March 11, 2010 
Practical English
What is the simple predicate of the following sentence? The Saturn rocket made travel to the moon possible. {A. Made} B. Moon C. Possible {D. Travel} is it A or D?
asked on December 3, 2014 
Chemistry
The halflife of 232Th is 1.4 * 10^10. Find the number of disintegrations per hour emitted by 1 mil of 232Th in 1 min.
asked on April 10, 2014 
Statistics
suppose the correla tion between SAT Verbal scores and Math scores is .57 and that these scares are normally distributed. IF a student's Verbal score places her at the 90th percentile, at what percentile would you expect her Math scores to be?
asked on December 20, 2011 
physics
A mass m = 0.225 kg on a frictionless table is attached to a hanging mass M = 0.330 kg by a cord through a hole in the table (see the figure). Find the speed with which m must move in order for M to stay at rest if r = 27 cm.
asked on February 24, 2011 
Chemistry
What is the difference between a commercial NiCd battery and a galvanic cell system of NiCd with nickel chloride concentration of 0.05M and cadmium nitrate concentration od 0.01M
asked on September 19, 2018 
algebra
an investor invested a total of $2100 in two mutal funds. one fund earned a 9% profit while the other earned a 7% profit.if the total profit was $161 how much was invested in each fund
asked on January 13, 2013 
BIBLE HELP ASAP
Hi, I have been stuck on the following question for a couple of hours now and need help. "Describe at least 3 ways that God has demonstrated His love to you personally. Answer in complete sentences." The problem is that i have NO idea how "God has
asked on December 7, 2015 
physics
A skier leaves the starting gate at the top of a ski ramp with an initial speed of 4.00 m/s (Figure 641). The starting position is 120 m higher than the end of the ramp, which is 3.00 m above the snow. Find the final speed of the skier if he lands 145 m
asked on October 31, 2014 
CHEM EQB
How many ml of 0.2M NaH2PO4 should b added to 40 mL of 0.1M Na3PO4 to make the buffer pH 7.2. Ka1:1.1 x 10^2 Ka2:7.5 x 10^8 Ka3:4.8 x 10^13
asked on November 6, 2012 
physics
In a lab experiment, a 1.5kg cart traveling at 4.3 m/s in the +x direction collides with a 2.5kg cart traveling at 2.7 m/s in the x direction. After the collision, you find that the 2.5kg cart is traveling at 1.9 m/s in the +x direction. How fast and
asked on March 8, 2011 
math
what is the equation of a hyperbola with one vertex at (6,5) and the equation of asymptotes are 5x6y30 and 5x+6y30?
asked on November 7, 2010 
math
i need to solve this equation by completing the square: x^214x+1=0 i don't' know how to do this, nor do i know what complete the square means. please help.
asked on November 4, 2008 
Math
When a cue ball strikes another ball, what is the largest possible angle the struck ball can be deflected from the line along which the cue ball was travelling?
asked on July 22, 2014 
geometry
what is the perimeter of a pool 7ft wide 10ft long 4ft high? Is it 34ft squared?
asked on February 26, 2013 
7th grade math
6(2r4)
asked on September 4, 2012 
MATH PLEASE HELP
Given: Let f: X > Y be a function. Then we have an associated function f^(1): P(Y) > P(X), where f^(1) (B)⊂X is the inverse image of B⊂Y. Question: Show that f^(1) is onetoone if and only if f is onto. [Notes: ⊂ represents subspace, I just
asked on November 3, 2011 
Math: Intro to Proofs
Given: Let f: X > Y be a function. Then we have an associated function f^(1): P(Y) > P(X), where f^(1) (B)⊂X is the inverse image of B⊂Y. Question: Show that f^(1) is onetoone if and only if f is onto. [Notes: ⊂ represents subspace, I just
asked on November 3, 2011 
calculus
Jill likes to play Blackjack. She heard about a winning strategy to ensure she does not lose. The strategy is: choose a starting amount to bet, and then double your bet if you lose. Keep doubling your bet until you win. When you win a hand, go back to the
asked on November 30, 2010 
math
what is the equation of a hyperbola with one vertex at (6,5) and the equation of asymptotes are 5x6y30 and 5x+6y30?
asked on November 7, 2010 
biology
dont even know where to start You prepared a 10fold dilution of a culture out to 109. You initially estimated there were between 3 x 108 cells/ml and 5 x 109 cells/ml in the original cell suspension. Which tube dilutions would you plate to ensure you
asked on October 27, 2014 
biology
You carried out a 10fold dilution series. You started with tube 0 which contained an overnight culture of E. coli. You estimated the original culture contained 6 x 108 cell/ml using McFarland nephlemeter standards. You plated 0.1 ml volumes of a number of
asked on October 27, 2014 
MATH
There are 8 boys, 12middle schoolers and 8 girls. what is the ratio of girls to boys?16/12=4:3 divide both sides by 4
asked on May 21, 2014 
math
The grade of a road is 6%. What is its angle of elevation?
asked on February 20, 2014 
calculus
PLEASE HELP Find the first and second derivatives of the function. y = e^8ex. I keep getting y' = e^8ex * 8 and its wrong. how do you do this?
asked on February 6, 2011 
chemistry
what type of interaction is Mg2+, O2 What type of interaction is Na+, Cl What type of interaction is II What type of interaction is H2CO, and CO What type of interaction is SO2, C6 H14
asked on February 3, 2011 
architecture
can you give me some websites for architectural designs for a 2 bedrooms bungalow?
asked on November 7, 2010 
math
what is the equation of a hyperbola with one vertex at (6,5) and the equation of asymptotes are 5x6y30 and 5x+6y30?
asked on November 7, 2010 
science
what is the independen variable and the dependent variable for scientific method to how does air pressure in a tire save gas
asked on September 29, 2009 
Algebra 2
Solve by completing the square: x^2+9x+6=0
asked on November 4, 2008 
college
why did the united states annex the philippines
asked on September 27, 2008 
music
Hi, I am looking for an old english song, but I don't remember the song title, its a slow love song and the only thing i remember is that the singers are all male and there are more than one, some asian looking probably japanese and also caucasians. The
asked on April 26, 2008 
math
I need this by tomorrow morning I had $6 to pay for part of lunch. My friend had enough money to pay the other part or 3/5 of the bill. What is the total bill?
asked on November 26, 2007 
help
how do u cite the newspaper the couier journal http://owl.english.purdue.edu/owl/resource/557/08/ Here is a website that gives you specific instructions and examples for the resource you need to cite. In the future, it would help if you put the SUBJECT in
asked on February 11, 2007 
physics
During a neighborhood baseball game in a vacant lot, a particularly wild hit sends a 0.144kg baseball crashing through the pane of a secondfloor window in a nearby building. The ball strikes the glass at 14.9 m / s, shatters the glass as it passes
asked on November 4, 2014 
physics
'Point charges of 0.26 ìC and 0.79 ìC are placed 0.25 m apart.At what point along the line between them is the electric field zero?'
asked on September 12, 2014 
medical terminology
1. Dr. Hannah places a stethoscope to a sevenyearold child’s chest. The lungs reveal basilar rales. Which method is Dr. Hannah using to perform the physical examination? A. Auscultation C. Percussion B. Palpation D. Visualization 2. Cardiology is the
asked on March 11, 2011 
physics
The velocity of a 2.5 kg block sliding down a frictionless inclined plane is found to be 1.58 m/s. 1.40 s later, it has a velocity of 7.32 m/s. What is the angle of the plane with respect to the horizontal (in degrees)?
asked on February 24, 2011 
calculus
Please help. i am confused on how to do this one. I keep getting arcsin(square root cos9x) but it is wrong. The probem is F(x)= arcsin(sqtsin(9x))
asked on February 11, 2011 
calculus
please help! Find an equation of the tangent line to the curve at the point (1, 1). y = 5x3  6x. y=? ...............i keep getting y=x+2 and its wrong. can someone please help?
asked on January 25, 2011 
Algebra
A stock market analyst was investigating the trends of two independent stocks and was surprised to see that both stocks were at the same unit value after a 12 month period. He knew that both stocks had started at the same value but had undergone different
asked on August 27, 2014 
Algebra
A new tollway is built. For the first month there is no toll to use the road and each day 4800 cars use it. After the first month it is estimated that for each dollar increase in the toll, 800 fewer cars will use the tollway. At what price do you think the
asked on August 27, 2014 
physics
a strong 100 kg man pushes down hard on the left piston. What happenes to the 10 kg mass on the right? The answer is the moves down, lifting the left piston despite the strong man. BUT WHY?
asked on June 15, 2014 
calculus
find the derivative of e^8e^x *8e^x
asked on February 7, 2011 
economics
what are the theories of david mcclelland?
asked on November 13, 2010 
alabama state
America's continued demographic trend toward urbanization would eventually result in the majority of the population living in cities, which finally did occur by the time of which U.S. Census reporting period?
asked on September 8, 2008 
sose
why did the people who lived in the colonies prior to 1901 feel that they needed to join together to make one country?
asked on May 6, 2008 
Algebra
I'm having a problem solving the following example. The teacher wants it in this format. 1st the Verbal Model, 2nd the Labels 3rd Algebraic Model 4th Solve and finally 5th part: Answer Question. Example: You are working on a scouting badge. You need 60
asked on October 11, 2007

mathe
2
posted on March 5, 2019 
6th grd. MATH QUIZ HELP!!!!
Thanks @Master. I checked all of them, and I got 2 wrong and I fixed them.
posted on May 4, 2018 
Life orientation
dsfsf
posted on February 17, 2018 
american gov
she only asked what excerpt. calm down.
posted on December 14, 2017 
Government
DAA is the correct answers.
posted on November 9, 2017 
Algebra 2
Each individual letter of the word Massachusetts is placed on a piece of paper, and all 13 pieces of paper are placed in a hat. If one letter is selected at random from the hat, find the probability that a consonant is selected.
posted on November 4, 2017 
Algebra
It's 1.D 2.B 3.C 4.D
posted on October 20, 2017 
Astronomy
7.2 x 10E6 cm
posted on October 11, 2017 
Math
54
posted on September 12, 2017 
Government
Monica is correct
posted on September 1, 2017 
biochemistry
Nunya is correct. Also, the question that they didn't mention (#6) is A.
posted on August 17, 2017 
Pre Algebra
So confused ;;;;
posted on May 2, 2017 
P.E. help please
Yes, you and 1 are correct.
posted on April 12, 2017 
geography
OMG THANK YOU
posted on March 28, 2017 
math
Not for connection academy
posted on March 3, 2017 
math
Actually my bad im stupid I meant to say that its 12 questions in all. the 12th one being the essay. Gray is correct for anyone's quiz I described above. Every single one. For everyone else i'm unsure. But just to recap grays answers; 1.) B 2.) C 3.) A
posted on March 2, 2017 
math
So wait, I'm on Lesson 5 (Polygons and Angles), Unit 4 (Geometry). This entire post is a mess and I don't think anyone could ever understand any of this. I'll tell you what guys. If any of you are at Lesson 5 (Polygons and Angles), Unit 4 (Geometry) with
posted on March 2, 2017 
Social Studies
Actually, number 3 is not entirely correct. It's A and B. Not B and C. Number two, is B. The rest you got correct.
posted on January 24, 2017 
government
A is incorrect. I believe it should be C, but you were on the right track though. I think House members serve 2 year terms...
posted on January 23, 2017 
MATH NEED HELP ASAP!!!!!
I believe it's A. J=10H j+6=4(H+6) Hope this is correct and it helps anyone.
posted on January 20, 2017 
science
It is B, It will move to the right.
posted on January 18, 2017 
Computers
HI is correct.
posted on December 13, 2016 
socialstdies
The answer to the first one is definitely C. Then 4 should be D.
posted on November 8, 2016 
SS
No, the answer is C.
posted on October 3, 2016 
help please:)
Which of these most helps in information retention?
posted on July 29, 2015 
Practical English
Im leaning towards D...
posted on December 3, 2014 
Finance
23
posted on October 26, 2014 
chemistry
2Na + S > Na2S 20g Na x (1 mole Na)/(23g Na) = 0.87 mol Na 0.87 mole Na x (1 mol Na2S)/(2 mol Na) x (55.1g Na2S)/(1 mol Na2S) =23.97g Na2S
posted on October 6, 2014 
statistics
$12,533.65
posted on September 16, 2014 
World Geography
idk
posted on August 11, 2014 
nervous system
yea wat is it
posted on July 23, 2014 
Health
wrong
posted on July 23, 2014 
ECON
did you possibly find the answer to this? im stuck on it aswell :)
posted on April 19, 2013 
math
Good solution, Steve, but w+b+f=6+7+4=17. worms (w)  6 bugs (b)  7 butterflies (f) 4 critters: w+b+f=22 points: 6w+7b+4f=119 (the only way to get an odd number is if b is odd) points from having one of each of the critters: w+b+f > 6+7+4=17 so, using
posted on September 10, 2012 
7th grade math
I plan to...thanks again!
posted on September 4, 2012 
7th grade math
That's the same answer my daughter got on her test & the same one I came up with when going over her missed problems...I just wanted another person's input. Thank you!
posted on September 4, 2012