Tuesday
October 21, 2014

Posts by lindy


Total # Posts: 53

Trig
Mr.Steve can you help the Algebra questions that were asked. My class happen to be doing the same thing.
October 1, 2014

Trig/math
Can someone help me?
October 1, 2014

Trig
Two planes take off at the same time from an airport. The first plane is flying at 240 miles per hour on a bearing of S 45.0° E. The second plane is flying in the direction S 45.0°W at 290 miles per hour. What is the bearing of the second plane from the first after 5 ...
October 1, 2014

Math
Find three consecutive number of which the sum is 85
June 26, 2014

language arts
2. Read the following paragraph "That thrilled me, and scared me. The great world seemed to swing wide like the gates of the Fair, and I didn’t even have a plan. I hadn’t even put up my hair yet. It seemed to me it was time for that, time to jerk that big bow ...
May 20, 2014

US HIST
Explain, in a paragraph of your own words, what you consider to be the “#1 Cost of the American Civil War.”Choices: (Social, Economic, or Political)
May 14, 2014

math
For questions 1–4, find the slope of the following graphs. 1.    (1 point)        2  –2  – 2.    (1 point)      1  –1 – 3.    (1 point)  ...
May 2, 2014

chemistry
help balance HNO2+HNO3
December 3, 2013

math
jeremy spends 1/4 of his pocket money each week on books.he saves 2/3 of what is left over.if he saves $5 each week,how much weekly pocket money does he receive
April 13, 2013

math
a bottle is 1/4 full of cordial,if 500 ml of cordial is added to it, the bottle is 2/3 full.how many ml does the bottle hold when full
April 13, 2013

math
24874divided by 17 ,which digits should one change in the first number to increase the answer by 100
April 13, 2013

math
24874divided by 17 ,which digits should one change in the first number to increase the answer by 100
April 13, 2013

math
what is the total surface (in square units) of an open-topped box with dimensions L*W*H =9*7*6
April 13, 2013

math
pqrst is a regular hexagon. v is the intersection of pt and su.how big is angle tvs?
April 13, 2013

Calculus
The height (in feet) at time t (in seconds) of a small weight oscillating at the end of a spring is given below. h(t) = 0.2 cos(2t) (a) Calculate the weight's average velocity over the time intervals [1, 2] and [5, 7].
January 26, 2013

math
three sevenths divided by six thirteenths = ?
December 24, 2012

math
sorry,i am still not undrstand
December 9, 2012

math
we decided on a new logo for our brand of shirts.It was to be 3 stripes. How many different logos we make, if we used 3 colors
December 9, 2012

math
sorry, I 'm still not understand
December 9, 2012

math
could u please explain how u work it out,thanks
December 9, 2012

math
how many 2 digit numbers can be written so that the second digit is greater than the digit before it ?
December 5, 2012

math
find the missing number; 8 1 4 5 7 # ;81 4 25 36 ?
December 2, 2012

math
a box contains more than 25 but fewer than 40 balls.When the balls are counted by 3 there is 1 left over.When the balls are counted by 5 there are 2 left over.How many balls are in the box?
December 2, 2012

Life orientation
Describe the life styele cancer and explain factors that contribute to the cancer
April 29, 2012

World history
What was the economy of Syria like before the current revolution? Do you know any good website for it? Please help me!
April 24, 2011

Chemistry lab
I did a copper cycle lab and my final weight of the copper is less than what i started with. Where did the lost copper go?
April 24, 2011

Algebra---Variation
It is a variation problem. I know what the answer is and how to get to the answer I just don't know how I got it. From measurements on many rivers, geographers find that the length of a river that drains a particular "basin" of land is approximately proportional ...
April 23, 2011

science
what quantity of heat must be absorbed to convert 86.1 g of liquid to a vapor at its boiling point, -24.09 c? the heat of vaporization of ch3cl is 21.40
April 23, 2011

world history
sorry it was logged in as my brother's name. Thanks again!
April 23, 2011

world history
Do you know how much it was in France approximately? Do you think there is a source that can help me? :(
April 23, 2011

world history
Can you compare Syria's education level of population with the France's back in the days before the french revolution?
April 23, 2011

Chemistry
In a copper cycle lab, where could have the lost copper might have went? Let's say I did a copper cycle lab and my final weight of the copper is less than what i started with. Where did it go?
April 23, 2011

chemistry
Wait but I tried out the question but I kept getting the wrong answer... So if [mass Hg x specific heat liquid Hg x (Tfinal-Tinitial) ] + (mass Hg x heat fusion) (27.2 * 0.1410 * -61.8) + (27.2 * 11.4) and I got the answer as -598 but the answer is wrong. What am I doing wrong?
April 23, 2011

chemistry
Ahh sorry it was a mistake. Sorry :(
April 23, 2011

chemistry
The freezing point of mercury is -38.8°C, is the only metal that is liquid at room temperature. What quantity of heat energy, in joules, must be released by mercury if 2.00 mL of mercury is cooled from 23.0°C to -38.8°C and then frozen to a solid? (The density of ...
April 23, 2011

Chemistry
My mistake :( Sorry.
April 23, 2011

Chemistry
The freezing point of mercury is -38.8°C, is the only metal that is liquid at room temperature. What quantity of heat energy, in joules, must be released by mercury if 2.00 mL of mercury is cooled from 23.0°C to -38.8°C and then frozen to a solid? (The density of ...
April 23, 2011

Chemistry
Oh never mind I got it. Thank you for your help!
April 22, 2011

Chemistry
But how would you get the mass if the question says 2.00ml and density is 13.6g/cm^3? How do you convert ml to cm^3?
April 22, 2011

Chemistry
The freezing point of mercury is -38.8°C, is the only metal that is liquid at room temperature. What quantity of heat energy, in joules, must be released by mercury if 2.00 mL of mercury is cooled from 23.0°C to -38.8°C and then frozen to a solid? (The density of ...
April 22, 2011

Chemistry
A 237 g piece of molybdenum, initially at 100.0°C, is dropped into 244 g of water at 10.0°C. When the system comes to thermal equilibrium, the temperature is 15.3°C. What is the specific heat capacity of molybdenum?
April 22, 2011

chemistry
calculate the concentration of ions present after the reaction between 13.50mL of 2.00M BaCl2 and 2.50mL of 6.00M H2SO4 i just wanted to check my answers [Ba^2+]=1.69M [SO4^2-]=o.938M [H^+]=0 [Cl^-]=1.50M if they are wrong please explain
February 26, 2011

chemistry
how wold you prepare 2.00L of 1.00M HCl solution using 6.00 M HCl? i already found the volume of 6.00M HCl needed to be .333L. i am confused about how to actually prepare the solution. do i used a volumetric flask or any other glassware?
February 26, 2011

chemistry
the grams of Ba(OH)2 that reacted was 11.99g. but isn't this still of the impure Ba(OH)2 sample? how do i find out the mass of pure Ba(OH)2? thanks for you're help so far
February 26, 2011

calculus
the side of squyare,s, is increasing at a rate of k unites per second. find the rate at which the area of the square is increasing
November 29, 2010

Algebra - word problem
A red ball and a green ball are simultaneously tossed into the air. The red ball is given an initial velocity of 96 feet per second, and its height, t seconds after it is tossed is (-16t^2 + 96t) feet. The green ball is given an initial velocity of 80 feet per second, and its ...
November 30, 2009

algebra
2c-d=-2 d=-4c+20
January 12, 2009

statistics
I meant REASONABLE, sorry. Thanks!
May 29, 2008

statistics
population mean=42.6 standard deviation=12 n=16 M=34.4. Is this mean a reasonable outcome for a sample of n=16, or is this sample mean very different from what would usually be expected? I obtained a z -score of -2.73. Thus, that would make the sample mean a reasonless outcome...
May 29, 2008

Statistics
*librarians intial claim
May 2, 2008

Statistics
Thanks. Would that mean the initial claim was too high?
May 2, 2008

Statistics
The head librarian claims that books have been checked out an average of seven times in the last year. You suspect she has exaggerated the checkout rate and that the mean number of checkouts per book per year is, in fact, less than seven. Using the computerized card catalog, ...
May 2, 2008

statistics
It is known that 60% of people do not respond to mailed questionnaires. In a sample of 20 questionnaires mailed, what is the probability that more than 12 people will respond?
May 2, 2008

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