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December 20, 2014

Posts by Brooke


Total # Posts: 549

Stats
How many different simple random sample of size 8 can be obtained from a population whose size os 42?
March 28, 2011

grade nine polynomials
(3/4) (1/-2) + (5/6) (-1/3)
March 27, 2011

grade 9 polynomials
7r +21s - 4r +18s 7r-4r =21s+18s 3r+39 Does this sound correct.
March 27, 2011

grade 9 polynomials
7 (r+3s) - 2(2r -9s) I am having a hard time solving can anyone please help
March 27, 2011

chemistry
What is the percent by mass of NaHCO3 in a solution containing 60 g of NaHCO3 dissolved in 500 mL of H2O
March 23, 2011

computer science
Create a method called countZeros, which takes an integer array as an input parameter and returns the number of zero entries in the array
March 21, 2011

How Children learn
1-20??
March 11, 2011

Teacher Aide
What are the answers??? And please let me know if you actually passed this exam.
March 11, 2011

Teacher Aide
Im doing Child devolopment and human behavior... and i want and need help! I have a headache! 1-20
March 11, 2011

Physics 102 (College)
256
February 27, 2011

Physics 102 (College)
5
February 27, 2011

math
somebody help with this question
February 27, 2011

math
ms.pritchard wrote the following inequality on the board 5.6 with the sign greater on equal to then negative fourteen what should be the solution set for the inequality
February 27, 2011

ap chem
what is the entire equation because you should be able to set it up as kc=(concentrations of products)/(concentrations of reactants). Also the balanced chemical equation will tell you to what power the concentration is raised to.
February 13, 2011

Physics
3.84m/s^2
January 31, 2011

algebra
is it (x - 2x)^2 ?
January 27, 2011

algebra
decide whether each trinomial is a perfect square. if so, factor it. x^2 - 4x + 4 how do i solve this?? i don't understand the method..
January 27, 2011

algebra
ok, thank you
January 27, 2011

algebra
write each square as a trinomial: (-11t^2 - 2)^2 (22t^4 + 44 + 4) <- is this answer correct?
January 27, 2011

Chemistry
How much energy, in calories, will be required to evaporate 125.0 mL of ethanol at its boiling point? Given: Density 0.818 g/mL Boiling Point 78.5 C Heat of Vaporization 210 cal/g Any help is appreciated!
January 19, 2011

Chemistry
what number should be placed in the blank to balance the equation C 3 H 8 + 50 2 --> 3 CO 2 ___ H 2 O I have been working on this Q for four hours and it is driving me CRAZY please HELP i hate chemistry or anything with numbers in it as a matter of fact.
January 12, 2011

language infinitives
it is used as a noun,an adjective,and also and adverb.
December 11, 2010

Calculus
assuming that you wish to have $19000 in 7 years and that the account earns 6% compounded continuously. Round your answer to the nearest cent. Answer:
December 1, 2010

Calculus
Company QRS generated a net profit between 1992 and 1997 at a rate approximated by 20 t + 264.5 million dollars per year, where t is the time in years since 1992. Find the value, in 1992, of QRS's net profit over the 5-year period from 1992 to 1997. Assume that the ...
December 1, 2010

Calculus
Redo problem 8 in section 6.3 of your textbook (page 288) assuming that the parents need $105000 in 9 years for college expenses, and that the bank account earns 9.25% compounded continuously. Round your answers to the nearest cent. (You may need to compute your answers to 4 ...
December 1, 2010

Algebra: Simple Interest
(5000 - x).12 + x(.10) = 568 (5000).12 - (x).12 + x(.10) = 568 600 - .12x + .1x = 568 subtract 600 from both sides -.12x + .1x = -32 -.02x = -32 divide both sides by -.02 x = 1600 3400 at 12% and 1600 at 10%
November 22, 2010

Physics
A 50-kg block is at rest on a 15 degree slope. A force of 250 N is acting on the block up the slope parallel to it. If the block does not slide up the slope, what is the minimum value of the coefficient of static friction between the block and the slope?
November 22, 2010

accounting
(cost - salvage)/life = annual depreciation (1000 = 50)/5 = 190 Book value - # years depreciated x annual depreciation = book value 1000 - 2(190) = 620
November 22, 2010

Algebra
Similar are proportional. 12 is to a as 3c is to c cross product 12c = 3ac divide both sides by 3c and a = 4
November 22, 2010

math
whats 5 to the seventh power and whats 5 to the third power
November 14, 2010

math
Mrs.rushford began to hike at an elevation of negative 40 feet. her elevation decreased by 90 feet in one hour what was Ms.rushford elevation after 1 hour
November 14, 2010

Math
Ferroza can buy a 24 ounce bag of ferret food for 1.19 or she can buy a 36 ounce bag for 2.89. which is the better deal?
October 19, 2010

math
(3 3/4) + (2 1/4) = 6
October 19, 2010

Math
How do you find the area of a semicircle
October 18, 2010

math
a tree casts a 12 f shadow at the same time a 10ft flagpol case a 20ft shadow how tall is the tree
October 17, 2010

Chemistry
How much hydrogen and oxygen must react to produce 65.00 grams of water? 2H + O2 -> 2H2O
October 13, 2010

math
what is the relationship between sin of thata and cos of thata at every ten degrees?
October 4, 2010

physics
A man is pulling on a rope with a force of 65 N directed at an angle of 26◦ to the horizontal. What is the x-component of this force? Answer in units of N.
September 13, 2010

social studies
What is another name for the peninsula nicknamed The Northern Neck?
September 8, 2010

Law and ethics in allied health
Licensing laws allow states to
August 28, 2010

Geometry
Which is the hypotenuse-leg theorem? A. If the hypotenuse and one leg of a right triangle are similar to the corresponding parts of another right triangle, then the triangles are congruent. B. If the hypotenuse is congruent to the corresponding part of another right triangle, ...
June 30, 2010

9th grade ENG
in her room at the prow of the house where light breaks and the windows are tossed with linden. my daughter is writing a story i pause in the stairwell , hearing from her shut door a commotion of typewriter- keys like a chain hauled over a gunwale. young as she is, the stuff ...
June 10, 2010

algebra
is the average of 27 - x, x - 8, and 3x + 11 is y, what is the average of 2y and 2y/3?
June 7, 2010

Science
I have to compare and contrast the difference between a service current and a wave.
June 6, 2010

5th grade
I am doing a history project on ancient rome was wondering if anyone knows where I can Ancient Rome natural resouces and how they were used. I don't know if I'm looking it up right all I seem to find is that they planted olives. Thanks
May 29, 2010

statistics
The question is: A data set consists of a set of numerical values. Which, if any, of the following statements could be correct? a. there is no mode b. there are two modes c. there are three modes I answered a. there is no mode.
May 4, 2010

statistics
a data set consists of a set of numerical values. which of the following is correct? a. there is no mode b. there are 2 modes c. there are 3 modes I answered a there is no mode is this correct?
May 4, 2010

statistics
indicate whether the given statement could apply to a data set consisting of 1,000 values that are all different. a. the 29th percentile is greater than the 30th percentile. b. the median is greater than the quartile c. the third quartile is greater than the first quartile d. ...
May 4, 2010

Chemistry
What is the molal concentration of an aqueous calcium chloride solution that freezes at -2.43 degrees Celsius?
April 30, 2010

chemistry
Why can you smell a cake baking in the kitchen when you are in your bedroom?
April 28, 2010

literature
The major theme of "life Without Principle" is
April 28, 2010

literature
What does Seattle say about integrating white and Native American cultures?
April 28, 2010

statistics
In a gallup poll of 1,038 adults, 540 said that second hand smoke is very harmful. What is the percentage of adults who said second hand smoke is very harmful? Is the answer 52%
April 27, 2010

statistics
the first class in a relative frequency table 50-59 and the corresponding relative frequency is 0.2. What does the 0.2 value indicate?
April 27, 2010

literature
When does the Narrative of Sojourner Truth take place
April 21, 2010

chemistry
If you start with 1.00 g NaCl and an excess of the other reactants, how many grams of Cl2 will be produced?
April 14, 2010

trig
fridge temp equation: T(x)=3sin(pi/10x)+36 What are the high and low temps that will occur in the fridge after its been chilled to 36 degrees? How many mins between these temps? What is the period length?
April 13, 2010

spanish
i have to write a sentence using tocar. is this correct a mis padres les toca arreglar la sala.
April 4, 2010

math
how to do ratio in simplest from example 5km to 5m
April 4, 2010

3rd grade book report
So what I'm a third grader I have gotten straight a my hole life what about u:)
March 1, 2010

spanish
what does this say in english: Que usa la abuela?
February 17, 2010

english
afle-feicrlk what is this football phrase unscrambled?
February 7, 2010

english
what is this football phrase unscrambled iocfnf cernro?
February 7, 2010

English
Football phrases: Can someone help me please? sdnieo ikkc, iocfnf cernro, afle-feirlk, awrd aypl, and udrnao. Can someone help me unscramble these words they are football phrases
February 7, 2010

Math
i think the answer is $480
February 7, 2010

English
Football phrases: can you help me unscramble these? sdnieo ikkc, iocfnf cernro cernro, afle-dne, adwr aypl, and nde udrnao
February 7, 2010

Biology
Name three characteristics of mitochondria and chloroplasts that support the endosymbiotic hypothesis of eukaryotic evolution?
February 3, 2010

Biology
Explain how early RNA molecules might have been able to respond to natural selection?
February 3, 2010

Biology
Why was the discovery of microspheres and coacervates an important contribution to the understanding of how life might have originated on Earth?
February 3, 2010

Biology
Why do some scientist think that areas protected from the atmosphere might have favored the production of organic compounds on early life?
February 3, 2010

Biology
Explain how the half-life of a radioactive isotope affects the usefulness of that isotpe in dating specific types of rock?
February 3, 2010

Algebra
The sum of two mumbers is 21, and their difference is 7. What are the numbers?
January 28, 2010

algebra
Jims Brakes charges $25 for parts and $55 per hour to fix the brakes on a car. Myrons Auto charges $40 for parts and $30 per hour to do the same job. What length of job in hours would have the same cost on both shapes?
January 28, 2010

Algebra
Jim's Brakes charges $25 for parts and $55 per hour to fix the brakes on a car. Myron's Auto charges $40 for parts and $30 per hour to do the same job. What length of job in hours would have the same cost on both shops?
January 28, 2010

Algebra
Solve y=1/4x-1 if the domian is (-4, -2, 0, 2, 4) Please help me answer thank you for in advanced!
January 28, 2010

Algebra
How would you solve this problem: Slove y=1/4-1 if the domain is(-4,-2,0,2,4) Could someone please explain to me how to do this? Thank You in advance for your help!
January 27, 2010

Biology
9) A molecule shaped like a spiral staircase is typical of A. deoxyribonucleic acid. And I think number 14 is C but im not for sure.
January 26, 2010

Algebra
Tickets to a movie cost $7.25 for adults and $5.50 for students. A group of friends purchased 8 tickets for $52.75. How many adult tickets and student tickets were purchased?
January 26, 2010

algebra
The length of Sally's garden is 4 meters greater than 3 times the width. The perimeter of her garden is 72 meters. What are the dimensions of Sallly's garden?
January 26, 2010

English
What is an example of a personification?
January 26, 2010

english
What is an example of a metaphore?
January 26, 2010

english
Can some one give me an example of a metaphore? And explain what a metaphore is. Also can someone give me an example of a personification? PLEASE? thatnk you in advanced for your help!!!
January 26, 2010

english
Is this sentence a personification? Buddy enters many contests but knows that his cousin's friendship is his real fortune.
January 26, 2010

spanish
what does Cuando es la fiesta de Arturo mean? and how do you answer it in a complete sentence.
January 25, 2010

biology
__________________ charcters show many degrees of variation because they result from the additive effects of several ____________. Many human conditions are complex because they are influenced both by ___________ and by ___________. If two genes cross oveer 35 percent of the ...
January 24, 2010

algebra
Four pears and two apples cost $1.96. Three apples and three pears cost $2.10. Find the cost of 1 apple and 1 pear.
January 24, 2010

algebra
A 30ft. cable is cut into 2 pieces. One piece is twice as long as the other piece. Find th length of each piece of the cable.
January 24, 2010

algebra
The charge for admission into the concert is $2.75 for adults and $1.50 for childeren. If 589 people paid to get into the concert and $1151 was collected, find the number of adults and the number of childeren who paid for tickets.
January 24, 2010

algebra
If Kurt were 10 years old, he would be twise as old as his sister, and their combine ages would be 36. How old are Kurt and his sister?
January 24, 2010

algebra
a cable is cut into 2 pieces. One piece is twice as long as the other piece. Find the length of each piece of cable
January 24, 2010

Chemistry
magnesium powder reacts with steam to form magnesium hydroxide and hydrogen gas. What is the pecentage yield of 10.1g Mg reacts with an excess of water abnd 21.0g Mg 9g (OH)2 is recovered? If 24g Mg is used the percentage yield is 95% how many gramns of magnesium hydroxide ...
January 10, 2010

organic chemistry
Two students are running C-13 nmr, one student has pare-xylene and the other has meta-xylene. Explain how they will be able to distinguish the two spectra.
November 30, 2009

algebra
by multiplying/dividing by a negative number, you are distributing that negative to every part of the equation, making everything effected by the negative opposite. In order to make an inequality sign opposite, you must flip it. with equations you still must multiply/divide ...
November 30, 2009

Science
to live dont you need water to suvive because if you do not have water you could die of dehidration
November 17, 2009

spanish
after classes i like
November 12, 2009

Health
How do you think what you eat affects your body and the way you feel?
October 21, 2009

Spelling
Can anyone help I need to put the words complimentary,often and complementary into one sentence does anyone have any ideas. Please and Thanks
October 20, 2009

math
Write each ratio as a fraction in simplest form : 11 1/3 out of 50 2/3, 5 1/4 out of 20 3/4, 28 1/2 : 30 1/4
October 6, 2009

I dont understand
everytime I try to ask for hwlp my teacher goes and helps other st8dents when I am tryin to ask him for help on a problem. How do I solve the system of equation? x+y=1 2x-y=5
September 28, 2009

11th grade
can you please evaluate these expressions if x=5 y=3.5 and w= -3 1.|2x-15| 2.|-2y=8|-9 3.|w-x|-|10y-w|
September 24, 2009

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