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October 22, 2016

# Search: chem/plz/check work studying for a final

Number of results: 51,780

chem/plz/check work studying for a final
23. A 32.3 L sample of a gas at 305oC and 1.20 atm is to be cooled at constant pressure until its volume becomes 28.4L. What will be the new gas temperature? Tf = Vf*Ti/Vi Tf =28.4L x (305+273)K / 32.3L = (28.4)(578)K / 32.3 = 16415.2/32.3 Tf = 508K I got this one wrong on a ...
December 16, 2010 by julia

chem/plz/check work studying for a final
what is the volume occupied by 16.0g ethane gas (C2H6) at 720 Torr and 18C? V=nRT/P conversion of mol: 16.0g C2H6 X 1mol C2H6/30.07g C2H6= .53mol C2H6 V= .53 mol(0.0821 L*atm/mol*K)(291)K / 720 Torr (1 atm/760Torr) V= 13.5 L
December 16, 2010 by julia

chem/plz/check work studying for a final
what is the volume occupied by 16.0g ethane gas (C2H6) at 720 Torr and 18C? V=nRT/P conversion of mol: 16.0g C2H6 X 1mol C2H6/30.07g C2H6= .53mol C2H6 V= .53 mol(0.0821 L*atm/mol*K)(291)K / 720 Torr (1 atm/760Torr) V= 13.5 L
December 16, 2010 by julia

chem/plz/check work studying for a final
A 20.5 lb cast iron boat anchor displaces 1.33 qt of water when submerged. What is the density of the cast iron, in g/cm3? 1L=1.057 qt 1kg=2.205lb 1lb=453.6g 20.5lb X 453.6g/ 1lb = 9298.9g 1.33qt X 1L/1.057qt = 1.26L 1.26L X 1000cm3/1L = 1260cm3 9298.9g/1260cm3 = 7.38g/cm3 **...
December 16, 2010 by julia

Final-Chemistry
I have finals coming up in a week and a half. I know I should have started studying earlier, but I just had an exam in my chem class and was focused on getting the information for that exam mastered before I started studying for the final. Now, I'm overwhelmed. I have no idea ...
November 30, 2009 by Katherine

Plz -- Chem Help
Posted by Rushi on Sunday, March 15, 2009 at 3:35pm. Question.. Nicotinic acid (niacin) is a monoprotic acid with the formula HC6H4NO2. A solution that is 0.012M in the nicotinic acid has a pH of 3.39 at 25C. what is the acid-ionization constant, Ka and pKa for this acid at ...
March 18, 2009 by A

Three moles of an ideal monatomic gas are at a temperature of 345 K. Then, 2531 J of heat are added to the gas, and 1101 J of work are done on it. What is the final temperature of the gas? delta U= 3/2nR(T final -T initial) (2531J - 1101J) = 3/2(3.0mol)(8.31)(T final - 345K) ...
April 15, 2007 by Mary

SS HELP PLZ ASAP
1) The science that studies population distribution and change is called _________(1 point) A. demography B. geography C. economy D. sociology 2) Canada is bigger than the united states, but only has _______ as many people.(1 point) A.one-half B.one-fourth C.one-eighth D.one-...
November 2, 2015 by regan

DR BOB help plz ?
Methyl violet is an indicator that changes color over a range from PH = 0 to PH= 1.6. What is K(a) of methyl violet? ----------------------------------- i tried 10^-0.8 = 0.16 but thts not right .. can u plz chk ... Feedback Very close. Check the rounding and number of ...
March 1, 2009 by julian

chem- plz check my work
2. Given the following equation, C2H5OH(l) + 3 O2(g)---> 2 CO2(g) + 3 H2O(l) How many liter of CO2 are expected in the combustion of 12.0 grams of ethanol? My work: 12.0g C2H5OH X 1 mol C2H5OH/46.08g C2H5OH X 2 mol CO2/1 molC2H5OH X 22.4L CO2/1 mol CO2 = 11.7 L CO2 all i ...
December 8, 2010 by hannah

Chem -plz check work
so i've worked on this some more, now I am asking if someone will plz check my work 2 half cells in a galvanic cell consist of one iron Fe(s) electorde in a solution of iron (II) sulphate FeSO4(aq)and a silver Ag(s) electrode in a silver nitrate solution, a)state the oxidation...
June 3, 2008 by Sarah H

Three moles of an ideal monatomic gas are at a temperature of 345 K. Then, 2531 J of heat are added to the gas, and 1101 J of work are done on it. What is the final temperature of the gas? delta U= 3/2nR(T final -T initial) (2531J - 1101J) = 3/2(3.0mol)(8.31)(T final - 345K) ...
April 16, 2007 by Mary

Statistics
A survey among freshmen at a certain university revealed that the number of hours spent studying the week before final exams was normally distributed with mean 25 and standard deviation 15. A sample of 36 students was selected. What is the probability that the average time ...
June 20, 2013 by Anonymous

Three moles of an ideal monatomic gas are at a temperature of 345 K. Then, 2531 J of heat are added to the gas, and 1101 J of work are done on it. What is the final temperature of the gas? delta U= 3/2nR(T final -T initial) (2531J - 1101J) = 3/2(3.0mol)(8.31)(T final - 345K) ...
April 15, 2007 by Mary

Three moles of an ideal monatomic gas are at a temperature of 345 K. Then, 2531 J of heat are added to the gas, and 1101 J of work are done on it. What is the final temperature of the gas? delta U= 3/2nR(T final -T initial) (2531J - 1101J) = 3/2(3.0mol)(8.31)(T final - 345K) ...
April 15, 2007 by Mary

Maths-equation
(x+y)+(y+z)=5(x+y)(y+z) (x+z)+(y+z)=7(x+z)(y+z) (x+y)+(x+z)=6(z+x)(x+y) plz can at least see the working and learn am studying maths on my own sir steve told me that x=5/24 y=7/24 z=1/24 but i don,t know how he got my paper is almst finish with that work
April 14, 2016 by philip!!!

chem/some1 check my work plz.
2NH3(g)+3CuO(s)=N2(g)+3Cu(s)+3H2O(g) if 18.1grams of ammonia reacts with 90.4 grams of copper(II) oxide, which is the limitting reagent?? what is the theorectical yield of nitrogen gasd? if 8.52 g of N2 are formed, what is the % yield of nitrogn gas?? please check if is ...
November 16, 2010 by julia

Chem -plz check work
suppose that 2.00 mL of 0.01 mol/L sodium sulphide is used to test a 50.0 mL sample of water containing 0.0005 mol/L mercury nitrate ions. What mass of precipate is formed? Na2 = Hg(NO3)2 --->2NaNO3 + HgS My Work: nNa2S=0.002*0.01 =0.0002 mol nHg(NO3)2=0.05*0.0005 =0....
May 28, 2008 by Lori

chem
stilll didn't get it .. .. can u plz explain in detail ... how did u get the answer.. plz plz plz plz plzp l zp thnks Bond enthalpy is the energy required to break a mole of a certain type of bond. O=O = 495 kj/mol S-F = 327 kj/mol S=O = 523 kj/mol Use average bond enthalpies ...
November 12, 2008 by DR BOOBB Plz HELP

Statistics
A survey among freshman at a certain university revealed that the number of hours spent studying the week before final exams was normally distributed with mean 25 and standard deviation 15. A sample of 36 students was selected. What is the probability that the average time ...
October 6, 2015 by Tommy

Question: Calculate the frequency of the AA, Aa, and aa genotypes after one generation if the initial population consists of 0.2 AA, 0.6 Aa, and 0.2 aa. What I have done is: P = (0.2)+(0.5)(0.6)= 0.50 q = 1-p = 1 - 0.50 = 0.50 Can someone check my answer plz.
December 6, 2006 by Josh

Question: Calculate the frequency of the AA, Aa, and aa genotypes after one generation if the initial population consists of 0.2 AA, 0.6 Aa, and 0.2 aa. What I have done is: P = (0.2)+(0.5)(0.6)= 0.50 q = 1-p = 1 - 0.50 = 0.50 Can someone check my answer plz.
December 7, 2006 by Josh

Math
In a group of 500 students, 150 are studying physics, 220 are studying biology, and 100 are studying chemistry. At least 25 students are studying more than one of these sciences. What is the greatest possible number of these students that might NOT be studying any of these ...
July 20, 2016 by Anonymous

Studying for Calc
I have a quiz on derivatives coming up and I really want to do well, but i'm not sure how to go about studying calc. i have no trouble studying for other subjects, but i'm doing poorly in calc and i need to make some changes in my study habits. any suggestions? i usually work ...
October 7, 2008 by Elizabeth

Tips Plz
Can you plz tell me some studying tips for math. How can i study math? is not like the other subject that i can just read through and memorize it. Math is hard to study because i know know how to study math when i have a upcoming test. Plz give me tips on how to study math and...
December 16, 2014 by Laura ♥

TRIGONOMETRY
Can you please help me with this question on my study guide for my trig final? Thanks! I'd also appreciate if you can check out my other postings and check my work for some other study guide questions. I want to make sure I'm ready for my final. :) 4. Transform each polar ...
May 16, 2013 by Kate

TRIGONOMETRY
Can you please help me with this question on my study guide for my trig final? Thanks! I'd also appreciate if you can check out my other postings and check my work for some other study guide questions. I want to make sure I'm ready for my final. :) 3. The rectangular ...
May 16, 2013 by Kate

English
A team of explorers ___________ the ocean floor. A.were studying B.are studying C.have been studying D.has been studying I think it is D...?
March 3, 2013 by Cassie

Lingusitics
Hello everyone!! For these six sentences, I have to explain what determines whether the sentence is grammatical or not 1) Both the students were studying. 2) The students were both studying. 3) They were both studying. 4) *Both they were studying. 5) Both of you were studying...
March 26, 2011 by Bobby

chem -repost for bobpursley
i don't know how to solve this. looked through all my notes but i'm not sure what kind of formula i am to use or if i even need one! please help me to understand the theory behind this: "calculate the work need to make room for the products in the combustion of S8(s) to SO2(g...
April 17, 2011 by please, help me

Computers
1. Which of the following study tools would work well for studying Vocabulary? A. making an outline B. summarizing the textbook C. flash cards*** D. comparing notes to the test 2. Which of the following is helpful when studying for a test? A. hanging out with your friends ...
February 10, 2015 by Shimme

math ps. help
Time Spent Studying (in hours) The time spent studying, in hours, on a daily basis of 9 different students was used to create the box plot shown above. Which of the sets of times below matches the given box plot? Time Studying: 0, 0, 0.5, 0.5, 0.5, 0.5, 1, 2, 2.5 Time ...
January 22, 2014 by anthony awsome

LIVING ENVIRONMENT
the ability to grow in size is a characteristic of living organism .Although an icicle may grow in size over time,it is considered nonliving because there is 1)an incerase in matter ,but no increase in the number of icicle. 2)an interaction between the icicle and the ...
February 12, 2013 by tania sharmin

math
identify the value of x that makes each pair of the ratios equivalent x:4 and 45:20 A.8 B.9 C.10 plz plz plz plz help me!!!!!!!! PLZ!!!!!
November 2, 2015 by pankakes

math plz check ;-;
Choose the correct graph for the linear equation 2x - 3y = 12. a.y=-3x b.y=3x+4 c.-3y=x-4 d.y=-3x-4 plz check if my answer is correct. My answer is c ^^;
May 31, 2016 by leo

math miss.sue can u plz check me answers plz
which of the following appears to be an irrational number? A. 3.7272727272... B. the root of 64 C. -6/25 D. 0.73303330...
November 19, 2015 by emma

grammar check PLZ HELP ;-;
Which sentence contains an error in the use of end marks or commas? A.Miss K.C. Fairchild will lead the band in a Sousa march. B. Mom, what does B.C. mean? C.Dr. and Mrs. Majeck will attend the party on March,12,2007. D. Address inquiries to Ella Adams, 315 Elm St., St. ...
May 23, 2016 by Leo

Math (quick check plz)
hi i rearranged these terms into y=mx+b can you plz check and see if they're right? 1. 2x+5y-16=0 2. 4x-3y-6=0 3. 3x+y+2=0 1. 5y=-2x+16 2.3y=-4x+6 3. y= -3x-2 tnx ^^ On the first two, you need to divide each side by the coefficent of y. On two, what happened to the negative ...
March 19, 2007 by gorden

Urgent Chem help plz
is answer +103 KJ.. plz chk Plz explain in detail.... i tried to search on internet but i am confused with co-efficents.. how to set up the equaiton .. plz help me ??? Bond enthalpy is the energy required to break a mole of a certain type of bond. O=O = 495 kj/mol S-F = 327 kj...
November 12, 2008 by Sarah

CHEM
At constant pressure, which of these systems do work on the surroundings? Check all that apply. 2A (g) + B(s) --> 3C(g) 2A (g) +2B (g) -->5C(g) A(g)+ B(g) --> C(g) A (s) +2B(g)--> C(g)
February 10, 2012 by Akle

Discrete Mathematics
A tutor website wants to see how time spent studying for its content exams affects the ultimate scores. It asked its finite math test takers how much time they spent studying for the exam and compared that data against the final scores out of 60 points. It came up with the ...
July 30, 2013 by Joy

Discrete Mathematics
3. A tutoring site wants to see how time spent studying for its content exams affects the ultimate scores. It asked its finite math test takers how much time they spent studying for the exam and compared that data against the final scores out of 60 points. It came up with the ...
July 30, 2013 by Joy

bio check plz plz plz
in human (2n=46) mitosis result 2 cell with 23 chromoses and meosis result in (n=23) 4 cell with 46 chromoses... is this statment true ? please help me ....
November 28, 2011 by hiba

I NEED HELP!!:(!!!! HELP ME PLZ!!
I GOT A FEW QUESTIONS SO what is a cell part that has the funcion of a gel-like material inside cells... and what releases energy into the cell.?? plz plz plz plz HELP!!!
October 20, 2009 by i really need help!!

chem/some1 check my work plz.
nitrogen gas contained in a cylinder with a volume of 5.0x10^2 mL @ a temp of 30C and pressure of 710 torr. The gas is then compresse to a volume of 25mL and the temp. is reaised to 820C. what is the new pressure of the nitrogen gas?? Pf=p1*v1*t1/Tf*Vf P=(700torr)(5.02x10^2mL...
November 16, 2010 by julia

math plz plz plz plz help plz .....thank you
mark bought a notebook for \$1.45 and some pencils that cost \$0.42 each if the total cost was 6.91,how many pencils did he buy A.12 B.13 C.14 D.15 is 14 the answer plz help thank you
November 23, 2015 by random rainbow

Chemistry chlorine plz help
A metal x forms two different chloride.if 12.g of chloride A and 16.3g of chloride B contain 7.1g and 10.7g of chlorine respectively,show that the figure agree with the laws of multiple proportions.write there formulea plz i need the work....no hint plz
January 12, 2016 by Daniel

chem 2
What is the concentration of the final solution if 1 liter of 6 M HCl is diluted to a final volume of 2 L?
November 22, 2012 by don

Science
I need to observe and identify variables and I'm in 6th grade!!! Help, this work is killing me....It's scenario 1-4 and I have Mr Jones plz help plz
August 31, 2012 by Destiny

math plz check ;-;
Order the following solids from least (1) to greatest (3) volumes. A rectangular pyramid whose base has an area of 60 in2 and whose height is 10 in. third A rectangular prism with a length of 6 in, a width of 5 in, and a height of 10 in. first A right cylinder with a diameter ...
May 31, 2016 by leo

physics
You do a certain amount of work on an object initially at rest, and all the work goes into increasing the objectfs speed. If you do work W, suppose the objectfs final speed is v. What will be the objectfs final speed if you do twice as much work? 1. 4 v 2. 2 v 3. Still v 4....
January 16, 2010 by Anonymous

physics
You do a certain amount of work on an object initially at rest, and all the work goes into increasing the object's speed. If you do work W, suppose the object's final speed is v. What will be the object's final speed if you do twice as much work? 1. 4 v 2. 2 v 3. Still v 4.v...
January 16, 2010 by Anonymous

Statistics/probability
Of 120 students, 60 are studying French, 50 are studying Latin and 20 are studying French and Latin. Find the probability that a student is: (a) studying French or Latin and (b) studying neither.
March 19, 2009 by Carline

Physics ~Work Kinetic Energy~
1.)A ball (m 0.5 kg) starts from rest and has 300 J(joule) of work applied to it. a) what is the initial kinetic energy of the ball? b) what is the final kinetic of the ball? c) what is the final velocity of the ball? 2.)A boy is doing chin-up. If the boy does 450 N of work to...
January 30, 2013 by Isis

math plz help ;-;
What is the equation of the line containing the two points (-4, 8) and (1, -7)? a.y=-3x b.y=3x+4 c.-3y=x-4 d.y=-3x-4 plz check if my answer is correct. My answer is c ^^;
May 31, 2016 by leo

social studies? i think idk
what new ideas came from the automobile? plz help plz plz plz ASAP
December 5, 2015 by Geena

Math ....urgent help
i just don't get this elimination method ..... plz help me plz.....teach me how to keep the x and y in a parallel line. and which number to multiply.....plz help -5x-4y=-11 10x=-6-y help me plz......
January 7, 2009 by vero

SS plz help me plzzzzzzz
What are the two major forces that reshape earth? Describe how itworks. plz plz plz help me there are no answer choices hope u can still help
November 18, 2015 by #AriannaGirl :)

Chem
Find and show work the final pH when 35mL of 0.200 mol/l sulfuric acid are titrated with 18mL of 0.030 mol/L sodium hydroxide?
May 26, 2010 by S.S

chem
a 9.6L sample of hydrogen gas (H2) @ 88 degrees C is cooled until its final vol was 3.4L. If ther are no pressure changes what is the final temp?
April 25, 2011 by ALEX5

Calculus
Can someone check my work on this problem? I'm studying for the AP test and I would really appreciate any help. Let f(x) = the definite integral from [-2,(x^2-3x)] of e^(t^2) dt At what value of x is f(x) a minimum? a. For no value of x b. 1/2 c. 3/2 d. 2 e. 3 The answer I got...
April 28, 2015 by ashley

Chemistry
What is the molarity of a phosphoric acid solution if 32.3 mL of the phosphoric acid solution is titrated to the final equivalence point with 20.6 mL of 0.581 M sodium hydroxide acid solution? H3PO4 + 3NaOH ==> Na3PO4 + 3H2O mols NaOH = 0.0206L*0.581 M= ?? mols H3PO4 = 1/3...
February 11, 2007 by Question

SS PLZ HELP ME ASAP
What are the two major forces that shape and reshape earth? Describe how each one works. plz plz plz help me there are no answer choices hope u can still help
November 18, 2015 by #AriannaGirl :)

chem homework help
can you check my work? Give the conjugate acid for each of the following bases. A. CN- = HCN B. SeO4^2- = HSeO4- C. HCO3- = H2CO
April 25, 2010 by Anna

sequence help!!!!! plz steve,reiny,damon,bob...anyone!!!!
find the expression in terms of n of the nth term of following squences 5,13,32,69,129,221....help plz show it work
March 16, 2016 by emmanuel

physics
You do a certain amount of work on an object initially at rest, and all the work goes into increasing the object's speed. If you do work W, suppose the object's final speed is v. What will be the object's final speed if you do twice as much work? 1. 4 v 2. 2 v 3. Still v 4.v/(...
January 16, 2010 by Anonymous

biology
a boy inherits genes for tallness,but his growth is limited as a result of poor nitrition. this is an example of 1)an inherited disorder. 2)environmental influence on gene expression . 3)expression of a hidden trait 4)a characterstic controlled by more than one pair of genes. ...
February 8, 2013 by tania sharmin

Math check
2[3(8-2 2)-6] my answer is 204 and btw it's not 22 it 2 power of 2 . Plz check it

Chem 1000
A Cylinder is filled with 1.20 mol of He(g) at 25 C under ambient pressure of 0.966 atm. The gas in the cylinder is then heated with 1.430 KJ of heat, and the piston is raised by the expanding gas under the constant ambient pressure. Calculate the following after expansion. a...
October 16, 2010 by J Velji

maths-word problem help
A and B can finish a piece of work in 12days and 18days respectively. A begin to the work and they work alternately one at a time for one day each.The whole work will be completed in? Help me plz show step thanks
May 6, 2016 by dam

math plz help!!!!!!!
which ratios form a proportion? A) 4/5 , 20/25 B) 8/12 , 18/24 C) 1/3 , 7/24 D) 2/5 , 6/16 which ratio forms a proportion with 9/15? A)3/6 B)2/3 C)12/30 D)6/10##### which proportion has cross products of 5 x 24 and 8 x 15? A)5/8=15/24 B)5/24=8/15 C)8/24=15/5#### D)15/8=5/24 ...
December 6, 2015 by awesomeguy123

Algebra
I am having issues with factoring. I am trying to check my work using a TI84 Plus calculator but I don't know how to plug in a problem to check its factoring. Can anyone help? for example 44y^3+55y^2-11xy how can I go about plugging that in to check my work?
March 27, 2014 by Christopher

Write an equation, in point-slope form, for the line that is perpendicular to y  10 = 3/2 (x  4) and that passes through the point (4, 2). My Answer: Formula for point-slope form; y  y = m(x  x) Insert y and x value; y  2 = m(x  4) If the slope for the original line is 3...
March 21, 2016 by Scarlet (Scar for short)

Which of the following is true about work? A. Work depends on time. B. Work helps retain the state of matter. C. The SI unit of work is the watt. D. Work can cause a change in the form of matter. I know it is not a or b so whats the answer
November 17, 2014 by Morgan

studying for chem 2
My professor really likes conceptual problems and that is what we will be tested on. How can I practice concept questions??
September 17, 2011 by Lauryn

Alg-Substitution (check plz)
k well i had to use substitution to find the point of intersection for these 2 equations x-y=10 3x+y=11 i chose to substitute y in the first equation my final answer was (-1/2 , 5) can someone clarify this, and if it's wrong, where'd i make a mistake? In the first equation, y...
February 22, 2007 by thomas

studying
I was wondering if anyone had some good studying tips. I have a big science test tomorrow and I need to learn the material very quickly. Write know I am saying the words out loud as I re-write them. My teacher always tells that studying IS NOT reading.
October 15, 2009 by 1234

homework college chem.
a sample of gas occupies a volume at 73. 1 mL. As it expands, it does 135.0 J of work on its surroundings at a constant pressure of 783 torr. what is the final volume of gas?
February 26, 2012 by danielle

sociology
hi people actually i need 2 do a project on sociology for 20 marks n i cant decide which on a topic ca u all plz help n v also need 2 have a survey or 30-40 interviews plz plz plz plz help its urgent It would really help us teachers if you would write in standard English so we...

Math
Can someone check my work? the problem is: x=2+3/y and I have to solve for y I get rid of the denominator y and multiply it with X...so it looks like xy=5 then just divide by x on both sides for a final answer of y=5/x
September 1, 2013 by George

english
Late into the night, Isabel is often studying. Is the complete predicate is often studying? Is the simple predicate studying?
September 15, 2009 by hunter

Plz someone Chem Urgent Help
The overall energy involved in the formation of CsCl from Cs(s) and Cl2 (g)is - 443 kj/mol. Given the following information: heat of sublimation for Cs is +76 kj/mol, bond dissociation energy for œ Cl2is +121 kj/mol, E(11) for Cs is +376 kj/mol, and E(a) for Cl2is 349 kj/...
January 16, 2009 by Samenia

math- study question for final
You are given a sample of 106 body temperatures having a mean of 98.2 F and a standard deviation of 0.62 F. You are asked to test the hypothesis that the population mean body temperature is 98.6 F using a 0.05 significance level. What value should you use for the test ...
September 17, 2016 by Danielle

science help now plz
a geneticist is studying a pedigree that shows the family history of a recessive genetic diease. which of the following pedigrees shows an impossible relationship.
February 11, 2016 by cassie

english
can u edit this and add a little more plz like 2-3 lines plz in easy words, it is from the book we are all welcome here by elizabeth berg: Historically the work is significant because it gives us an insight of the horrors of the civil war, which asserted the rights of the ...
January 11, 2010 by sana

1) A roller coaster (398 kg) moves from A (3.82 m above the ground) to B (29.4 m above the ground). Two non-conservative forces are present: friction does -1.82 x 104 J of work on the car, and a chain mechanism does +5.49 x 10^4 J of work to help the car up a long climb. What ...
June 3, 2012 by Hannah

Geometry i need hlp urgently plz plz plz
The lenght of a line segement is of 10units and the co-ordinate of one end point are (2,-3) if the abscissa of the other end is 10 find the ordinate of the other end?? Working plz plz
October 18, 2015 by Collins

Chem 100
If the initial volume is 150mL and the final volume is 1L, what is the final pressure?
March 1, 2012 by Jen

math
17.Given that 32 = 9, 26 = 64, 17 = 1 and 44 = 256. What is the value of 105? A)50 B)100 000 C)5000 D)5 plz explain how you get this answer i am studying the sample questions for the math olympics tommorow so i need to know what they will be like.
February 26, 2014 by help

Civics to Ms.Sue
Ms.Sue can you check my questions below I like when you check them and suggest what's best. I just need to finish this study guide so I can start studying on the right questions and not on the wrong ones.
April 3, 2015 by Sarah

P.E /.....
PLZ PLZ PLZ HELP. Trying to get over quiz Harvey has his heart set on making the state finals for his track team in the 100 yard dash. Although Harvey knows there are many factors to improving his time and becoming an elite sprinter, one skill is paramount to his success. ...
December 21, 2013 by Samantha

math help plz
You receive 80% on your first midterm while your friend receives 70%. Taking into consideration the fact that the first midterm is worth 14% of your overall mark, the difference (between receiving 70% and 80% on your midterm) this could make in your final mark is? How would I ...
September 19, 2010 by May

Algebra
Hello, can someone tell me if I got the following solve and check work correct? 1. solve and check 1/2x = 3 5/6 1/2x = 3 5/6 1/2x = 23/6 3x = 23/3 x = 23/3 And to check for it 1/2x = 3 5/6 1/2x = 23/6 46x = 6 x = 6/46 x = 3/23 2. Solve and check 3x + 2 / 2 = 7 3x + 2 / 2 = 7 ...
April 13, 2010 by Tamir

On Monday Roger spent 8 1/10 hours studying. On Tuesday he spent another 1 3/10 hours studying. What is the combined time he spent studying?
February 20, 2014 by Chyna

Sheila spent x hours studying on a Tuesday and 1/4 hour studying on Thursday. What was the total amount of time in hours Sheila spent studying if x = 2/4? Do I add 1/4 + 2/4?
November 23, 2014 by Nessa

ACT Math
Of the 60 students in a school, 24 are currently studying chemistry. Exactly 16 of the girls in the school are not currently studying chemistry. The number of girls in the school is 33. How many boys are currently studying chemistry? Correct answer is 17. How did they get that...
August 27, 2013 by Java

college algebra-plz help
a circle has the equation 3(x-5)^2_3y^2=12. Find the center and radius and graph the circle. find the intercepts, if any. plz show work
December 9, 2012 by James

eced
A correlatibas .82 was found betweenen number of hours studied and final exam scores. A.students who stuief less received a high exam scores. B.students who studied who studied received lower exam scores. C.studying caused studies to received higher exam scores. D.The amount ...
September 4, 2015 by Anonymous

chem/some1 check my work plz.
air bags actived when a severe impact causes a steel ball to compress a spring and electrically ignite a detonator cap. this causes NaN3 to decompose explosively according to the following reaction: 2NaN3(s)=2Na(s)+3N2(g) what mas of NaN3 must be reacted to inflate an air bag ...
November 16, 2010 by julia

English
Could you please check these sentences? Thank you very much. 1) Before he went to Celtic Camp, Johnny did some mock exams as a preparation (to prepare) for his A-level exams. 2) Kane suggests he should copy his essays from the net. Johnny refuses (to follow her advice) though ...
September 26, 2011 by Henry2

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