Sunday

April 20, 2014

April 20, 2014

Number of results: 5,380

**Trigonometry**

2X^3(4 - 3X) -5X(X - 2). 2X^3*4 + 2X^3(-3X) -SX*X -5X*(-2) = 8X^3 - 6X^4 -5X^2 + 10X = Arrange exponents in decreasing order: -6X^4 + 8X^3 -5X^2 + 10X.
*Sunday, December 26, 2010 at 5:55pm by Henry*

**Math**

John has 4 math books, 6 biology books,, and 8 statistics books to arrange on a shelf. In how many ways can he arrange the books so that books on the same subject are grouped together?
*Sunday, April 7, 2013 at 5:24pm by Reet*

**Calculus**

Hmmm. Since this is pre-cal, are you allowed to use derivatives? Assuming yes, then we have 32. f' = 2x-4 f' <0 for x<2 so f is decreasing on (-oo,2) f' > 0 for x>2, so f is increasing on (2,+oo) f' = 0 at x=2, so f is not increasing or decreasing there. 33. f' = x...
*Saturday, September 17, 2011 at 9:02pm by Steve*

**Chemistry**

We did a flame test today to see what substances produce what colors when burned. Can you please explain... Why each of the different elements have a different atomic emission spectrum? Would the flame tests be useful for detecting individual elements present in a mixture of ...
*Tuesday, September 17, 2013 at 8:52pm by Sarah*

**chemistry**

Which of the following changes will decrease the total amount of gaseous solute able to be dissolved in a liter of liquid water? increasing temperature increasing pressure decreasing surface area decreasing temperature
*Sunday, May 15, 2011 at 7:48pm by chris*

**Chemistry**

Which of the following changes will decrease the total amount of gaseous solute able to be dissolved in a liter of liquid water? A) increasing temperature B) increasing pressure C) decreasing surface area D) decreasing temperature
*Thursday, June 9, 2011 at 1:50pm by Brya*

**chemistry**

Which of the following changes will decrease the total amount of gaseous solute able to be dissolved in a liter of liquid water? increasing temperature increasing pressure decreasing surface area decreasing temperature
*Thursday, September 1, 2011 at 8:03pm by kara*

**chemistry**

Which of the following changes will decrease the total amount of gaseous solute able to be dissolved in a liter of liquid water? increasing temperature increasing pressure decreasing surface area decreasing temperature
*Thursday, September 1, 2011 at 8:04pm by kara*

**biology**

I have some questions that relate to table 2.1 which lists the chemical elements that occur naturally in the human body. Similar percentages of these elements are found in most living organisms. a. In what abiotic (non-life) chemical forms are these elements often found in ...
*Thursday, September 10, 2009 at 3:48pm by muffy*

**chemistry**

For the equilibrium system below, which of the following would result in an increase in the concentration of CO(g)? 2H2(g) + CO(g) CH3OH(g) + 92 kJ a) decreasing temperature b) adding some CH3OH c) both b and d d) decreasing the volume of the container e) both a and b
*Wednesday, August 3, 2011 at 5:37pm by tt*

**Calculus**

The diameter of the sphere is decreasing at 0.2 cm/min. This means that its radius is decreasing by 0.1 cm/min. The formul
*Thursday, September 24, 2009 at 7:54pm by Christiaan*

**calculus**

is the function f(x)=x^2 increasing on decreasing at x = -1. can anyone please check my reasoning: the value of the derivative of the function at x=-1 is -2, so that means the slope of the tangent line to the graph at that is a negative value so the function is decreasing at x...
*Monday, June 29, 2009 at 11:49pm by jeff*

**algebra**

You have a parabola opening upwards, so the function is decreasing to the left of the vertex and increasing to the right of the vertex. the x of the vertex = -b/(2a) = 2/2 = 1 so decreasing for x < 1 increasing for x>1
*Sunday, April 28, 2013 at 9:49am by Reiny*

**O.CHEM -> PLEASE CHECK!!**

Arrange the compounds in the order of increasing boiling point ***(LOWEST first): 1) H3C-O-CH3 2) H2O 3) CH3CH2OH 4) CH3CH2SH I think the order should be: #1, 4, 3, 2 Arrange the following in order of increasing rate of reactivity with conc.HBr ***(LEAST first). a) ...
*Wednesday, March 12, 2008 at 9:48pm by K*

**statistics**

In finding the median, you first need to arrange the scores in order of their value. 3 4 4 4 4 4 4 5 5 5 6 6 6 7 8 In simple terms, the median is still 5, but unless you arrange the scores in order of value, the answer might be different. I hope this helps a little more. ...
*Friday, December 14, 2007 at 8:44pm by PsyDAG*

**math**

Are you just looking for text examples? 2 elements {moons of mars} which are {phobos, diemos} 1 element {radio amateurs with the call sign JY1} {The late King Hussein of Jordan} 0 elements {female astronauts who have walked on the moon} infinite number of elements {number of ...
*Friday, June 11, 2010 at 8:43am by Dr Russ*

**Art**

Do you mean you need to choose a painting? A painting that includes design elements and visual elements? You'll need to explain more about what you think the difference between those elements is. Please also type with correct punctuation and capitalization to help us ...
*Saturday, November 7, 2009 at 3:29pm by Writeacher*

**Calculus**

Given f(x)=sin(x)-2cos(x) on the interval [0,2pi]. Determine where the function is concave up and concave down, and increasing and decreasing. I have found that the answer for decreasing is (2.68,5.82). All answers are to be in interval notation like that one.
*Tuesday, June 22, 2010 at 11:46pm by Shane*

**chemistry**

what is the difference between elements in a group and elements in a period on the periodic table Elements in the same group have similar chemical properties. Element in the same period have properties that change periodically across the table. Check out if the elements of the...
*Tuesday, November 7, 2006 at 7:05pm by tk*

**maths**

The numbers 1,2,…,17 are divided into 5 disjoint sets. One set has 5 elements, one set has 4 elements, two sets have 3 elements and the last set contains the 2 remaining elements. Two players each choose a number from 1 to 17 at random. The probability they choose numbers from...
*Friday, February 8, 2013 at 12:53am by Anonymous33*

**mathematics**

The numbers 1,2,…,17 are divided into 5 disjoint sets. One set has 5 elements, one set has 4 elements, two sets have 3 elements and the last set contains the 2 remaining elements. Two players each choose a number from 1 to 17 at random. The probability they choose numbers from...
*Wednesday, February 6, 2013 at 11:40am by Anonymous1*

**calculus**

Consider the exponential function . Which of the following best describes the the graph of g? a. Concave up and increasing b. Concave up and decreasing c. Concave down and increasing d. Concave down and decreasing The rules are +constant, concave up, - constant concave down. ...
*Tuesday, September 5, 2006 at 7:08pm by Joshua*

**Math**

theres a question on my homework packet. Here it is: -The Data contains 7 elements. -all the elements are greater than 6 but less than 24. -the mode of the set is 18 -the range and the mean are 15 -the meadian is 16 -The set cobtains exactley 3 odd numbers -when ordered from ...
*Wednesday, July 16, 2008 at 11:10pm by Veronica*

**Calculus**

Find the intervals on which the given function is increasing and decreasing. y=-x^2-2x y'=-2x-2 critical point x=-1 Increasing [-infinity,-1) Decreasing (-1,infinity] is this the correct way of writting this wiht the brackets
*Monday, September 24, 2012 at 4:04pm by kieran*

**calculus**

f(x)= −x2lnx find the critical points , increasing & decreasing interval and concavity.Please just show me the steps on how to get the increasing and decreasing interval and critical pts . Thanks :)
*Wednesday, November 16, 2011 at 3:21am by mikki*

**Maths - Sets**

There is 1 empty set the combinations of 5 elements taken zero at a time is C(5,0) = 5!/(0!)(5!) = 1 the element a alone is a subset of M so is the element e, and i etc so that is 5 more in fact the number of combinations of 5 elements taken 1 at a time is C(5,1) = 5!/(1!)(4...
*Sunday, May 4, 2008 at 8:23am by Damon*

**Math**

-with I adjacent to N treat "IN" as a single element, so you now have to arrange 6 different elements, which is 6! but it could be IN or NI, so the number of arrangements is 2(6!) = 1440 - alternating vowels and consonants Since you have 3 vowels and 4 consonants, you must ...
*Thursday, June 14, 2012 at 1:02am by Reiny*

**chemistry**

1) Arrange the metal-metal ion reactions (aluminum, copper, nickel), M^n+ + ne^- --> M^0, in a column, in order of decreasing ability as oxidizing agents... What I put was : Al^+3 + 3e^- --->Al Ni^+2 + 2e^- --->Ni Cu^+2 + 2e^- --->Cu 2) Also, explain your reasoning...
*Wednesday, March 11, 2009 at 3:24pm by danny*

**Math**

It seems to me there are 10 ways to pick subsets of 1 element; 10!/(8! 2!)= 45 subsets with 2 elements; 10!/(7!3!) = 120 with three elements and 10!/(6!4!) = 210 subsets with four elements The total is 385.
*Thursday, February 19, 2009 at 6:28pm by drwls*

**math**

a spherical hailstone is losing mass by melting uniformly over its surface as it falls. At a certain time, its radius is 2 cm and its volume is decreasing at the rate of o.1 cm^3/s. How fast is the radius decreasing at the time?
*Monday, March 25, 2013 at 2:02am by Cathy*

**chemistry**

http://jersey.uoregon.edu/vlab/elements/Elements.html
*Monday, November 9, 2009 at 8:08pm by bobpursley*

**Math**

The first three elements of a number sequence are 1, 2, 3. ( As you can see, the middle number is one less than the product of its neighbors. This is true for the rest of the elements of this sequence. Now add the elements of the sequence up to a certain element. Could this ...
*Sunday, October 4, 2009 at 6:46pm by Diana*

**Geometry**

I cannot interpret the symbol between the sets in the answers. However, by looking at the answers, I suppose it is the symbol ⊂ which means "is a proper subset of". If A⊂B, A is a proper subset of B, means that all elements of A are also elements of B, and such that A&...
*Thursday, May 26, 2011 at 4:17pm by MathMate*

**Pre Calculus 12**

There are 3! ways to arrange the subjects For each such arrangement, there are 5! * 3! * 4! ways to arrange the books. That would be 3!3!4!5! = 103680 No idea how 360 is the answer. ------------------------------- C(3,1)+C(3,2)+C(3,3) = 3+3+1 No idea how 12 is the answer. The ...
*Friday, January 18, 2013 at 1:30am by Steve*

**Translation exam (from French into English)**

Thank you very much again :)) "bringing about elements = bringing up elements (?)" The original version says "apporter des éléments", is it "bringing up elements"? "as the person grows old. = perfectly correct, but being "old" perhaps "older" seems kinder? :)" Sure, but the ...
*Wednesday, January 14, 2009 at 8:14am by green_heart*

**calculus**

Hi: You are correct. The test criteria are, 1) The terms a_n are of decreasing sequence; clearly 1/(3n+1) is decreasing on [1, inf]. 2) Limit(n->inf)[a_n] = 0. Both criteria having been met, we conclude convergence. Regards, Rich B.
*Thursday, February 28, 2008 at 10:55pm by rich*

**CHEM**

Z wasn't correct. Element Z has a larger radius than elements X and Y. Because the outer electrons of element Z are not attracted as tightly to the nucleus as the outer electrons of elements X and Y, we can expect element Z to have a lower first ionization energy than elements...
*Tuesday, November 13, 2007 at 2:03am by K*

**math**

Assume that the set S has 14 elements. How many subsets of S have at most 4 elements?
*Wednesday, September 15, 2010 at 10:33pm by Laura*

**Finite MAth**

Assume that the set S has 7 elements. How many subsets of S have at most 3 elements
*Thursday, January 26, 2012 at 7:57pm by Bryan*

**science**

The current through all elements of a circuit is the same IF there are no elements in parallel.
*Saturday, August 3, 2013 at 1:02pm by Henry *

**Which compound is made up of three elements?**

Do you know how to count the elements in a chemical formula?
*Thursday, March 13, 2014 at 1:54pm by Steve*

**Science-Elements**

The formula tells you the elements in a compound, and how much of each element.
*Monday, March 29, 2010 at 9:08pm by bobpursley*

**Science**

Sucrose and glucose contain the elements carbon, oxygen, and hydrogen. What kind of elements are these?
*Friday, March 14, 2008 at 9:36pm by Haley*

**Science**

Sucrose and glucose contain the elements carbon oxygen and hydrogen what kinds of elements are these?
*Friday, March 14, 2008 at 9:36pm by bob*

**Math**

How many different functions are there from a set with 10 elements to sets with the following numbers of elements? a) 2 b) 3 c) 4 d) 5
*Monday, April 27, 2009 at 9:27pm by Elle*

**Math**

How many different functions are there from a set with 10 elements to sets with the following numbers of elements? a) 2 b) 3 c) 4 d) 5
*Tuesday, April 28, 2009 at 10:28am by Elle*

**Math**

Find the number of elements in A1∪A2∪A3, supposing that there are 103 elements in A1, 992 elements in A2, 10011 elements in A3, in each of the following situations: (a) The sets are pairwise disjoint, that is, no pair has common elements, that is, the intersection ...
*Sunday, March 30, 2014 at 9:11pm by Connor*

**Chemistry**

1.Arrange the following oxides in the order of increasing basicity. -Al2O3 -B2O3 -CaO -Ga2O3 -In2O3 -RaO 2.Arrange the following oxides in the order of most basic to most acidic. -Al2O3 -Cl2O7 -Cs2O -N2O5 -Na2O -P2O5 -SO3
*Monday, April 23, 2007 at 12:27pm by Mark*

**Periodic Table of Elements**

Hydrogen is a gas. Look on your periodic table and note the color. The other gaseous elements will be in the same color. Bromine is a liquid. Look on your peridic table for the same color for other liquid elements. The ferromagnetic elements are 26, 27, and 28.
*Sunday, February 6, 2011 at 3:45pm by DrBob222*

**10th Grade Chem**

See if you can find one of the periodic table on the internet that shows pictures of the elements. If you do you will see that the vast majority of the elements are shiny metal solids. Those that are not shiny metal solids are the exceptions. There are only two elements (...
*Monday, January 16, 2012 at 11:57pm by Dr Russ*

**science-elements**

what is the answer to this equation on elements because i just dont get it. hydrogen + __________ = water+heat
*Monday, October 15, 2007 at 1:35pm by Priscilla*

**6th grade**

I can think of dozens or hundreds of elements in social studies. What does your book say these elements are?
*Monday, August 31, 2009 at 9:50pm by Ms. Sue*

**chemistry **

Fe2+ + MnO4- + Fe3+ + Mn2+ which of the elements is undergoing oxidation and which of the elements is the oxidizing agent?
*Monday, October 24, 2011 at 11:49pm by TROUBLED*

**geometry!!!!**

Let A be a subset of T={1,2,…,100} subject to the condition that if 2 distinct elements a and b are in A, then a+b is not in A. What is the maximum value of |A|, which is the number of elements in A?
*Monday, April 29, 2013 at 12:04pm by bravo*

**geometry!!!!**

Let A be a subset of T={1,2,…,100} subject to the condition that if 2 distinct elements a and b are in A, then a+b is not in A. What is the maximum value of |A|, which is the number of elements in A?
*Tuesday, April 30, 2013 at 2:40am by roronoa zoro*

**mathematics**

Let A be a subset of T={1,2,…,100} subject to the condition that if 2 distinct elements a and b are in A, then a+b is not in A. What is the maximum value of |A|, which is the number of elements in A?
*Tuesday, April 30, 2013 at 9:35am by Mathsfreak*

**Social Studies**

Which of the following contributed to Britain's Industrial Revolution? A. Large Labor force C. powerful monarchy B. Decreasing food supplies D. decreasing money supply. The textile industry met its last major challenge to full mechanization with the development of ? A. a ...
*Tuesday, May 14, 2013 at 1:46pm by Erin *

**physics**

how do scientist know that the chemical elements here on earth are the same as on the planets in space and not some different elements
*Wednesday, February 8, 2012 at 7:56pm by Kara*

**Chemistry Question (elements)**

Which of the elements listed are the highest in activity. Look at the periodic table. Is K fairly reactive?
*Thursday, March 29, 2012 at 6:24pm by DrBob222*

**Statistics**

number of subsets of 6 elements = 2^6 = 64 which includes the nullset (plain pizza) and all elements ("the works")
*Saturday, February 1, 2014 at 9:34pm by Reiny*

**Math problem - eh?**

The calculation is correct, but the meaning is in error. A square with perimeter 160 is 40x40. A second problem is that you cannot arrange 20 equal squares into a square, since 20 is not a perfect square. How will you arrange them? A rectangle that is 4x5 will have sides ...
*Wednesday, February 29, 2012 at 10:21pm by Steve*

**math**

A 'UNION' B means list all those elements that you find in either A or B, not repeating any elements, so A U B = {3, 6, 15, 100}
*Friday, June 5, 2009 at 1:24am by Reiny*

**Science-Elements**

what stimulated the rapid discovry of new elements during the 1700s? I really dont know the answer to this question. I don't get it.
*Monday, March 29, 2010 at 8:29pm by Sara*

**math**

for a set of three elements find the number of different subsets of 2 elements.use row 3 of pascals triangle
*Tuesday, March 15, 2011 at 5:21pm by jasmine*

**Chemistry**

Do elements with higher masses always have lower average velocity than those elements with a low mass? Thanks
*Tuesday, March 12, 2013 at 3:32pm by Shadow*

**CHEMISTRY**

thank you so is AL2O3 3 elements Ca(HCO3)2 4 elements
*Wednesday, November 2, 2011 at 11:57am by chloe*

**Calculus**

I'm Sort of not understanding how to find symmetry, periodicity. The xintercept and yintercept, you plug 0 into the y to find the y intercept? then 0 into x for the xvalue? or vice versa? Increasing and decreasing are the derivative = to 0, if its negative its decreasing and ...
*Saturday, October 20, 2012 at 3:28pm by Anonymous*

**computer science(Algorithm)**

To make sure we are on the same wavelength, to me it is implicit that 1. the matrix entries are numeric 2. the insertion will preserve the given order horizontally and vertically, 3. location of non existent elements are unpredictable, and 4. The insertion of an element in a ...
*Thursday, October 21, 2010 at 9:05am by MathMate*

**calc**

If f(x) = xe^-x then at x=0 is f increasing, decreasing, relative max, relative min or that f' doesn't exist? I'm not sure, but I think it's decreasing, relative max or doesn't exist but I really have no idea. Thanks for your help!
*Tuesday, January 24, 2012 at 6:27pm by jules*

**algebra**

Arrange the polynomial in decreasing power of r: 18r^2 + 12ry - 3xr - 2xy =18r² + (12y-3x)r -2xy Do a mental long division, The first term is: 18r²/(6r) = 3r The last term is: -2xy/(-x) = 2y Therefore the answer is 3r+2y. Check: (6r-x)(3r+2y) =18r² + (12y-3x)r -...
*Sunday, May 30, 2010 at 5:45pm by MathMate*

**Pysichal Therapy Aide**

A PTA CAN ASK A SW TO HELP WITH ALL OF THE FOLLOWING EXCEPT: A. TO ASSES THE PATIENT'S HOME ENVIRONMENT AND INSTRUCT THE PATIENT AT DISCHARGE FROM THE HOSPITAL B. TO ARRANGE FOR HOME HEALTH SERVICES AT THE PATIENT DISCHARGED FROM THE HOSPITAL C. TO ARRANGE FOR MEALS-ON-WHEELS ...
*Thursday, February 10, 2011 at 8:10pm by Shannon*

**CellBiology**

Enhancers and promoters are ______. In contrast, the heterodimer "TFIIA and TFIIB" are examples of __________. a. trans-acting elements, cis-acting factors b. cis-acting elements, trans-acting factors c. cis-activating factors, trans-acting elements d. trans-activating factors...
*Monday, July 31, 2006 at 8:08pm by Josh*

**Biochem**

Enhancers and promoters are ______. In contrast, the heterodimer "TFIIA and TFIIB" are examples of __________. a. trans-acting elements, cis-acting factors b. cis-acting elements, trans-acting factors c. cis-activating factors, trans-acting elements d. trans-activating factors...
*Tuesday, August 1, 2006 at 11:12am by Sarah*

**science**

Mercury is a heavy metal. Using atomic models and the periodic table of elements, explain why it belongs to this category of elements
*Monday, October 10, 2011 at 12:54pm by Matt*

**Math!**

A spherical snowball is melting in such a way that its diameter is decreasing at rate of 0.4 cm/min. At what rate is the volume of the snowball decreasing when the diameter is 10 cm. (Note the answer is a positive number).
*Thursday, June 4, 2009 at 11:17pm by <3*

**math**

A spherical snowball is melting in such a way that its diameter is decreasing at rate of 0.2 cm/min. At what rate is the volume of the snowball decreasing when the diameter is 12 cm. (Note the answer is a positive number).
*Friday, August 27, 2010 at 8:36pm by jin*

**calc**

A spherical snowball is melting in such a way that its diameter is decreasing at rate of 0.4 cm/min. At what rate is the volume of the snowball decreasing when the diameter is 16 cm. (Note the answer is a positive number).
*Sunday, March 13, 2011 at 9:01pm by Anonymous*

**CAL**

(1 pt) A spherical snowball is melting in such a way that its diameter is decreasing at rate of 0.3 cm/min. At what rate is the volume of the snowball decreasing when the diameter is 8 cm. (Note the answer is a positive number).
*Sunday, July 10, 2011 at 4:25am by lan*

**related rates**

A spherical snowball is melting in such a way that its diameter is decreasing at rate of 0.4 cm/min. At what rate is the volume of the snowball decreasing when the diameter is 8 cm. (Note the answer is a positive number).
*Monday, October 24, 2011 at 10:06am by james*

**Calc**

A spherical snowball is melting in such a way that its diameter is decreasing at rate of 0.4 cm/min. At what rate is the volume of the snowball decreasing when the diameter is 10 cm. (The answer is a positive number).
*Thursday, October 28, 2010 at 11:36pm by Pierre*

**calculus**

A spherical snowball is melting in such a way that its diameter is decreasing at rate of 0.2 cm/min. At what rate is the volume of the snowball decreasing when the diameter is 8 cm. (Note the answer is a positive number).
*Monday, May 14, 2012 at 12:27am by remy*

**business communications**

What strategies may you use to incorporate effective visual elements into business presentations? When have you ever sat through a presentation that used visual elements ineffectively? What tips would you give that presenter, knowing what you you now know about effective use ...
*Monday, November 9, 2009 at 6:58pm by charlotte*

**Math(Help!!)**

What is the domain? Use a graphing utility to determine the intervals in which the function is increasing and decreasing and approximate any relative maximum or minimun values of the function. g(x) = 12 Ln x / x My answer was: Domain = (12,0) decreasing = (3,-2) and increasing...
*Monday, March 29, 2010 at 9:15pm by Mark*

**Math**

What is the domain? Use a graphing utility to determine the intervals in which the function is increasing and decreasing and approximate any relative maximum or minimun values of the function. g(x) = 12 Ln x / x My answer was: Domain = (12,0) decreasing = (3,-2) and increasing...
*Monday, March 29, 2010 at 10:06pm by Mark*

**Math (Calculus)**

A spherical snowball is melting in such a way that its diameter is decreasing at rate of 0.3 cm/min. At what rate is the volume of the snowball decreasing when the diameter is 10 cm. Can someone help & explain how to solve this question? Please.
*Thursday, November 29, 2012 at 11:28pm by Alex*

** Science**

Elements are composed of atoms of one kind only. The periodic table (at www.webelements.com gives a complete list of all of the elements. Elements combine to form compounds (that is, compounds are combinations of two or more elements). Mixtures can be separated by physical ...
*Thursday, October 16, 2008 at 10:29pm by DrBob222*

**Math**

A. {1,2,3}, {1,2,3,4} Do they have the same NUMBER of elements? No. So the two sets are not equivalent. If they are not equivalent, they cannot be equal. B. {1,2,3}, {1,2,A} Do they have the same NUMBER of elements? Yes, they both have 3 elements. So they are equivalent. Are ...
*Thursday, June 4, 2009 at 11:50am by MathMate*

**Math(Please help)**

What is the domain? Use a graphing utility to determine the intervals in which the function is increasing and decreasing and approximate any relative maximum or minimun values of the function. g(x) = 12 Ln x / x My answer was: Domain = (12,0) decreasing = (3,-2) and ...
*Tuesday, March 30, 2010 at 12:30am by Mark*

**chem**

Here is what you should do. First, make a table containing the normal values. Remember: N can be 1, 2,......etc. whole numbers. l can be 0, 1, 2....N-1 ml can be -l to +l in whole increments. Ms can be +/- 1/2. Then count up period 1 = 1s2 = 2 elements. period 2 = 2s2 2p6 = 8 ...
*Thursday, December 6, 2007 at 6:11pm by DrBob222*

**math**

two equal sides of an isoscles triangle with fixed based 'a' are decreasing at the rate of 9cm/second how fast is the area of triangle decreasing when the two sides are equal to 'a'
*Monday, April 1, 2013 at 1:40pm by shweta*

**Math!**

diameter is decreasing at a rate of 0.4 cm/min ---> dd/dt = -.4 cm/min or dr/dt = -.2 cm/min V = (4/3)pi(r^3) dV/dt = 4pi(r^2)dr/dt so when d=10, r=5 and dV/dt = 4pi(25)(-.2) cm^3/min = -20pi cm^3/min The negative rate for dV/dt tells me that the volume is decreasing, so if...
*Thursday, June 4, 2009 at 11:17pm by Reiny*

**CHEM****

Decreasing atomic radius means, to me, that we list the lagest radius first and the smallest radius last. That is the way they are listed above which is what the problem asked for. I don't understand why decreasing atomic radius and decreasing atomic size are not the same, at ...
*Tuesday, November 13, 2007 at 8:04pm by DrBob222*

**Calculus**

A spherical snowball is melting in such a way that its diameter is decreasing at rate of 0.2 cm/min. At what rate is the volume of the snowball decreasing when the diameter is 16 cm.
*Thursday, September 24, 2009 at 7:54pm by Z32*

**math**

did you notice that if you divide the first equation by 2, and the second equation by 3, you end with the same equation 3x + 2y = 6 ?? So really you are given only one equation, which of course has an infinite number of solutions. now re-arrange 3x + 2y = 6 to 2y = -3x + 6 y...
*Thursday, September 3, 2009 at 10:47pm by Reiny*

**Science-Elements**

Hmmmm. In 1700, only 12 elements were known. In 1800, 24 were known. By 1900, 80 were known. Where do these questions come from? Certainly not history, in my opinion.
*Monday, March 29, 2010 at 8:29pm by bobpursley*

**math help please**

the human body is 65% oxygen 18% carbon 10% hygrogen the rest is other elements what % is composed of ther elements
*Tuesday, February 12, 2013 at 12:19am by rachel*

**Records Management**

I am having a hard time understanding how to arrange these numbers and I have to turn the assignment in tomorrow. Any help would be appreciated. 1. arrange the numbers in terminal digit order. 2. arrange the numbers in middle digit order. 3. arrange the numbers in consecutive ...
*Saturday, June 4, 2011 at 1:34am by Karen*

**Probability**

What you are asking is how many ways to arrange 3 different numbers. In general, if you have n items, there are n! ways to arrange them (permutations). 3! = 3*2*1 3 4 5 3 5 4 4 3 5 4 5 3 5 4 3 5 3 4 There are 3 ways to pick the first group That leaves only 2 ways to pick the ...
*Tuesday, January 17, 2012 at 12:59am by Steve*

**math**

the product number (the third digit) could be 1x1, 1x2, 1x3 , ... 1x9 ----> 9 of them e.g. 111, 122, 133, ... 199 each of the last 8 can be arranged in 3!/2! or 3 ways so far we have 1 + 24 or 25 such numbers could be 2x2, 2x3, 2x4, e.g. 224 236 248 arrange 224 in 3 ways ...
*Friday, July 27, 2012 at 5:27pm by Reiny*

**Elements and Compounds**

A formula contains numbers below the elements called__________________? The subscripts in chemical formulas tell us the _______________of particles that combine in a compound.
*Tuesday, December 14, 2010 at 5:05pm by Brandon*

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