October 7, 2015

Posts by andrea

Total # Posts: 738

Chemistry- acids and bases
Given the following neutralization raction: HCO3^- + OH^- <=> CO2[over]3^- + H2O a. label the conjugate acid-base pairs in this system b. is the forward or reverse reaction favored? Explain. Write net ionic equations that represent the following ractions: a. the ...
May 16, 2007

Okay, so apparently ASA and FeCl3 form a violet complex and FeCl3 forms with phenol groups to make purple. Looking at the structures of ASA and salicylic acid, only salicylic acid has the phenol group. The thing is, salicylic acid is supposed to be an impurity in the ...
April 29, 2007

culteral diversity
The creation of minority group status for Mexican Americans reflected the dynamics of
April 19, 2007

graph y=4
April 10, 2007

Calculus, antiderivatives
A student accelerates from rest at a rate of 3 miles/min^2. How far will the car have traveled at the moment it reaches a velocity of 65 miles/60 min? a(t) = 3 miles/min^2 so v(t) = 3t + k miles/min but when t=0, v=0 so k=0 then v(t)=3t d(t) = 3/2 t^2 + c but when t=0 d, the ...
April 5, 2007

Whilwind, breeze: Downpour is to ?? The answer starts with scr,spr,str,and thr Sprinkle? Spray? Stream? You could try the on-line Rogets Thesaurus, type thesaurus into google. rain, mist, drizzle
April 3, 2007

World History
What are some modern examples of cultural blending in art? Consider music, literature, painting etc.. I can't find any info for this topic and I have to write a 1 page report. Possibly one of these artists would make a good topic: Frieda Kahlo
March 25, 2007

algebra PLZ HELP!!!
y= 9/11x-17 9x-10y=179 You need to use parentheses to tell us what the problem is. Is equation 1, y = 9/(11x-17) or is it y = (9/11)x - 17? y= 9/11x-17 9x-10y=179 Rewrite them as 11 y - 9 x = -187 and -10 y + 9x = 179 Add the last two and you get y = -8 Substitute in any ...
February 23, 2007

I am putting < for the square root abbreviation. I don't know how to use it on my comp. 3<99-2<44-6<11=? For Further Reading On a graphing calculator, the carrot symbol is used to show exponents. that’s what I used here. Solve your exponents first: 3^99, ...
February 22, 2007

I am putting < for the square root abbreviation. I don't know how to use it on my comp. 3<99-2<44-6<11=? On a graphing calculator, the carrot symbol is used to show exponents. that’s what I used here. Solve your exponents first: 3^99, then 2^44, then 6^11 ...
February 22, 2007

PLEASE!!!! HELP!!!! ME!!!!
solve the system using substitution {x+2y=11 {3x+2y=13 i just told u this one
February 22, 2007

HELP!!!!!!!! please!!!!!
solve the system using substitution {x+2y=11 {3x+2y=13 i just told you how to do the other one; it's the same exact method. solve for x and y. you get: x=-2y+11 and y=(-1/2x)+(11/2). then plug them both back into the original equation (either one, it doesn't matter); ...
February 22, 2007

i really, really, really need help
what coordinate point is the solution to the system? {3x+2y=8 {x-y=1 (2,1) please don't think i just made that up, it's correct. you have to use substitution, when you do solve for x and y, you get: x= y+1 and y=x-1, plug in y for 3x+2y=8 and you get: y=1, then plug in...
February 22, 2007

algebra 1
what coordinate point is the solution to the system? {3x+2y=8 {x-y=1 y=x-1 so 3x+2(x-1)=8 3x+2x-2=8 5x-2=8 5x=10 - - 5 5 x=2 Then 2-y=1 -2 -2 -y=-1 y=1 Well, to cut the crap the answer is (2,1)
February 22, 2007

egypt mummification
um guys i just wanna know what the plugged eye sockets with
February 8, 2007

What is boil soil :: goat?
January 16, 2007

Maths test
A store gives a staff discount of one fifth. How much would a member of staff pay for: a) a camera with a retail price of £215? just do 215 divided by 1/5 (0.20) and you'll have the amount in "pounds" (i think that's what that sign stands for)....if you...
December 5, 2006

Inter. Algebra
square root sign 2x+3 - square root sign x-2 =2 In my head, I worked it as x=3. I did that because only sqr roots that are rational integers can be subtracted to give a whole number. Now, analytic method. I have no idea, I dont see a simple method in ordinary algebra. how do ...
December 2, 2006

Inter. Algebra
Count Iblis how do you simplify 3square root sign with this underneath (3x squared y) to the third power? "3 square root sign" probably means "cube root", in which case [(3 x^2y)^3]^(1/3) = 3 x^2 y The cube root of any quantity x can be written x^(1/3)
December 2, 2006

Inter. Algebra
Count Iblis what is the answer to 2 square root sign 18x? The instructions say to simplify or reduce. 2*(18x)1/2= 2*(9*2)1/2= 2*3(2)1/2= 6*(2)1/2 If you can leave it in this form, the above is the way to end. If you are to continue to a final answer, then, finish by 6*1.414 =8...
December 2, 2006

Inter. Algebra
Another problem plz help Count Iblis. How do you solve 5/x+2 + 2x/x squared - 4= 3/x-2? 5/x+2 + 2x/x squared - 4= 3/x-2 You write the term: 2x/x squared as 2/x the equation becomes: 5/x+2 + 2/x - 4= 3/x-2 4/x = 0 This equation has no solutions. It is only satisfied in the ...
December 2, 2006

Inter. Algebra
Simplify 2i to the 5th power? (2i)^5 = 2^5 * i^4 * i = 32 (-1)^2 * i = 32 i
December 2, 2006

Inter. Algebra
what is the answer to 2i to the 5th power? i^2 = -1 --> i^4 = 1 ---> i^5 = i (2i)^5 = 32 i thanks for the info!
December 2, 2006

Inter. Algebra
can you simplify 12x squared y cubed?
December 2, 2006

Inter. Algebra
what is the answer to 2 square root of 18x? Do you mean 2*(18x)1/2? What does it equal. What are we to do with the problem? DrBob222, My problem states 2 square root sign & 18x underneth it. If you could help me with this problem I'd really appreciate it. It must be equal ...
December 2, 2006

Inter. Algebra
what is the answer to 12x squared y cubed /2xy squared +6xy * y squared +6y+9 /3y cubed +9y squared? You have not written an equation, only an algebraic function, with two variables. You need to add parentheses to clarify the order of operations. There is no "answer"...
December 2, 2006

Inter. Algebra
how do you foil 12x squared y cubed?
December 2, 2006

story board???
okay, so what exactly is a story board? I used to assign these. Here were the directions: 1. Divide a page into six sections (like the little frames in a cartoon series in the newspaper). Students usually had two rows or three sections. 2. Decide on the six main actions in a ...
November 21, 2006

World History
What was the reason for the downfall of the Han Dynasty and The Roman Empire? Was is partially invasion from barbarians? Han Dynasty: Roman Empire: http://www....
November 21, 2006

social studies
person whogives to a business or project hopeing to make a profit investor
November 13, 2006

Financial Management
Year Cash Flow(A) Cash Flow (B) 0 -307,206 -27,651 1 14,950 8,726 2 32,391 13,901 3 29,232 9,222 4 390,590 13,140 15% rate of return. what is the payback period for Period A and B.
November 5, 2006

I'm having some troubles with these. Thanks in advance. If a>0 find the minimum value. If a<0 find the maximum value. 1. y=-x²+2x+5 2. y=-2x²-3x+4 These are functions for parabolas, so f(x)=ax²+bx+c when a does not equal 0 In both your examples, the &...
October 31, 2006

the settlers of jamestown saved their colony by planting?
October 18, 2006

word unscramble
louvcarese (2 words) funceelni dearpilshe stiche gametannem thanimoreolans (2 words) ginlapnn
September 28, 2006

At a construction site, a brick fell and hit the ground at 24m/s a) from what height did the brick fall? b) how long was it falling? for a) i got 29.387m and for b) I got 2.448s I got a) by using v^2=v0^2 +2a(x-x0) for b) I used v=v0+at Did I do this problem correctly? If we ...
September 19, 2006

Can someone please help me with an algebra problem? -|4-8b|=12 I really get confused with the absolute value symbols and a negative sign outside of them. Don't worry about it; it does tend to be a bit confusing. I'll explain the difference between inside and outside ...
September 14, 2006

bay and penninsula
What is the difference between a bay and a penninsula? A bay is a body of water -- smaller than a sea or ocean or gulf -- that is not completely surrounded by land. San Francisco Bay is one good example. A peninsula is a land formation that is surrounded on all but one side by...
September 5, 2006

unscrambling word
June 14, 2005

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