Monday
April 21, 2014

Posts by Cheryl


Total # Posts: 290

math
what is the difference between a solution set and a replacement set

algebra
whats five times a number squared?

Math
I need a good explination to understand why a positive number minus a negative number equals a positive or in other words you add it. ex 10-(-5)= 15

Math
Thanks

Math
Please explain why a positive number minus a negative number equals positive and you add it together??? Makes no sense at all. ex 10-(-3)=13

Math
Area of a painting. A rectangular painting with a width of x centimeters has an area of x2 + 50x square centimeters. Find a binomial that represents the length.

Math
I need help with this problem. Factoring with Two Variables h^2  9hs + 9s^2

physics
how high must a 2 kg basketball be thrown so that the top of its arc, it has a potential energy of 160J?

math
The perimeter of a rectangular backyard is 6x + 6 yards. If the width is x yards, find a binomial that represents the length.

math
Multiply 3x^8y^5 * 6y^5 * 2x Simplify your answer as much as possible.

math
282

math
A total of tickets were sold for the school play. The number of student tickets sold was two times the number of adult tickets sold . How many adult tickets were sold?

English
How do i write a thesis statement about greed for the novel The Lion, The Witch and The Wardrobe?

calculus
Is this a correct answer, I'm trying to integrate the marginal revenue function to get the function for total revenue. R'(x)=(30/(2x +1)^2)+30 =R(x)=(-15/2x+1)+30x

calculus
I am stump on how to break this down for I can use the chain rule to get the integral of this equation. (-30/(2x+1)^2)=30

algebra
suppose that the height of an object shot straight up is given by h=544t -16t^2. h= feet and t= seconds Find the maximum height and the time at which the object hits the ground

chemistry
The reaction of zinc and chlorine requires 0.00624 mol of Zn and 0.0125 mol of Cl to react exactly to form zinc chloride. What is the mole ratio of Zn to Cl? What is the empirical formula of zinc chloride?

Accounting
Proprietorship, partnership or corporation, Why would an entrepreneur want to choose one over the other?

Calculus
The answer given by Reiny is not correct. Let the central angle be theta. The area of the sector is proportional to the ratio of the central angle to the angle which goes the whole way around the clockwhich is theta/2pi. If we multiply the formula for the area of a circle by t...

programing
1. CheckPoint: Interfaces and Communication Messages Understanding object-oriented methodologies is often difficult. You already understand that object-oriented analysis and design emulates the way human beings tend to think and conceptualize problems in the everyday world. Wi...

college algebra
Please help in solving this problem using the method of substitution -2/3x + Y= 2 2x -3y =6 thanks for your time.

Chemistry
When combining Ca(OH)2 with Na2CO3 it entraps SO2 out of a gas stream from kiln emissions where ore is processed into nodules. When there is not enough Na2CO3 in this combination, will it not allow the solids to form out and settle?

health
The postoperative death rates are calculated by patients who have expired in what period of time?

PHYSICS
sorry I thought that it said four sheets

PHYSICS
65.6

chemisty
Use the mole ratio of CuO produced per mole of malachite to write a balanced equation for the malachite decomposition reaction. Assume that CO2 is also a product of the decomposition.

Geography
If you are trying to write an essay I strongly suggest that you don't copy the answers from a book. I see that is what you did up there, I'm homeschooled and even in regular school they will get you for that, put it into your own words. It's not hard. Just trying t...

anatomy/physiology.
which term means blood in the chest? a. hemothorax b. aerothorax c. pneumothorax d. gastrothorax

Anatomy.Physiology
Where are keratinized cells found in the body? a. Sweat and sebaceous glands b. hair and nails (my guess) c. capillaries and nerve fibers d. the subcutaneous layer of the skin

Anatomy/Physiology
Structurally, what is the difference between the dermis and epidermis? A. The epidermis is thicker. B. The dermis contains more types of tissue. C. The dermis is mostly of dead skin cells. D. The epidermis consists of mostly adipose cells. I'm thinking b or c.

behavior modification
ellen was referred to the clinic shortly after her fake miscarriage who was employed as an admin assist. with mr johnson whom she had an affair with for 2 years and mr johnson was unwilling to divorce his wife because of his children. what issues do you think are important to ...

desoto
When the cell is not dividing dna is uncoiled into what

SICENCE
50.0 G SILVER SPOON AT 20.0 C PLACED IN A CUP OF COFFEE AT 90.0C

Social Studies
Canadas geography is noteworthy because the country has what?

critical thinking
What if a person whom you did not know made a prejudicial rhetorical statement towards you?

music
Many composers of the Impressionist era wrote harmonies consisting of chords that moved in _______ motion. A. reverse B. indirect C. parallel D. convex 4. Who was the virtuoso violinist that had a profound influence on Franz Liszt? A. Giuseppe Verdi B. Franz Schubert C. Giaco...

music
Richard Wagner's major work is a four-opera cycle called A. Carmen. B. The Barber of Seville. C. The Ring of the Nibelung. D. Siegfried.

romantic era of music
Richard Wagner's major work is a four-opera cycle called

4th grade
1548

medical coding and billing
I am also doing this project and I must say, I'm freaking out a bit. I haven't been in school since 1978, so I am hesitant to submit my paper. Would anyone who has already completed it be willing to critique it before I submit it? I would greatly appreciate it and it w...

social studies
What was the moving of Africans to the New World colonies to be used as slaves?

Math
what is the prime factorization of 54

Science Biology
Explain how the roles different parts of a plany have in converting light evergy into chemical energy. I need it broken down into easier terminology.

Science
I need information on plants. "Explain the roles different parts of a plant have in converting light energy into chemical energy." I need to teach this to a special education child in as simple terms as is possible. Can you tell me some sites I can look at to find in...

algebra
Suppose the number of new homes built ,H, in a city over a period of time , t, is graphed on a retangular coordinate system where time is on a horizontal axis. Suppose that the number of new homes built can be modeled by an exponential funtion, H=p*a^t where p is the number of...

algebra
Suppose the number of new homes built ,H, in a city over a period of time , t, is graphed on a retangular coordinate system where time is on a horizontal axis. Suppose that the number of new homes built can be modeled by an exponential funtion, H=p*a^t where p is the number of...

International Business
Does Western Union standardize products or adapt them for different markets

International Business
What resources does an International Internet retailer need other than merely a storefront on the Internet? Does it require fewer physical, financial, and human resources than a traditional retailer, or just as many? Explain.

Math
I need help writing a googal as a power of 10

HHS 265
Assignment: Community Foundations Paper Resources: Chapter 13 (pp. 174-79) in Financial Management for Human Service Administrators Due Date: Day 7 (post to your Individual Forum) Identify a community foundation in your area. Write a 700 to 1,050 word paper describing the orga...

Hum 130
Thank you.

Hum 130
Is indigenous religion still practiced in Japen today?

english
Canceled or cancelled? with one L or two L's?

French
Is this how you say to spend more time? Passer plus de temps?

Literature (short story)
Omg Thank you just took the test got 100!!!

English
Hello I need to check my grammer, nouns, verbs, ect. Reflection Paper The book as well as the CD has been enjoyable for me. I have used both within my classes. Students had to listen to the beats and the rhythm of the music being played. Once they heard it they were to stop it...

physics
65.6

science
27

College Algebra
Maximize the objective function C = 4x + 5y with the constraints x + y 5, x + 2y 6, x 0, y 0. Your constraints don't make sense. They need to be equations. Are you leaving out "=" signs? If x=0 and y=0, there no variables and you can't maximize C

social studies
Characterize the united states culture according to the five categories of value orientation theory:man-nature,activity, time,human nature, relational. What is your view on Us culture. I am reading a book about the US cultures. I just wanted to hear or read someone else views....

business and finance
The cost of producing a number of items x is given by C=mx+b, inwhich b is the fixed cost and m is the variable cost (the cost of producing one more item). (a) If the fixed cost is $40 and the variable cost is $10, write the cost equation. Could someone help me please with thi...

business and finance
The revenue for a sanwich shop is directly proportional to its advertising budget. When the owner spent $2000 a month on advertising,the revenue was $120,000. If the revenue is now $180,000, how much is the owner spending on advertising? Please Help!! Set up a proportion. $2,0...

algebra1
M varies directly with n; m=144 when n=8. What is the constant of variation k? I don't know what this mean. Could you help me out in solving this/ A statement such as "M varies directly with n" can be changed to the equation M=kn, where k is a constant. since you...

Religion
In the role of religion in the U.S, how does it compares to Egypt's religion, and how is they different? Thank you for using the Jiskha Homework Help Forum. Here is some help on religion in Egypt: http://en.wikipedia.org/wiki/Religion_in_Egypt Egypt has a state religion, I...

algebra1
two consecutive integers such that the sum of 3 times the frist integer and 6 times second integer is 24. Expalin the variables that you used. If I could get help in solving this ASAP, I wiould really appreicate it? Let the two consecutive integers be x and x =1. The verbal st...

math
In your opinion, how is the order operation used to solve equation. exponets, groups, multiplication, division, addition, subtraction. This allowes you to get the same result every time..... I hope this helps :) I searched Google under the key words "math operation order&...

math
The cost of a long-distance telephone call is $.36 for the first minute and $.21 for each additional minute or portion thereof. Write an inequality representing the number of minutes a person could talk without exceeding $3. cost= .36 + .21(m-1) then put the cost less than or ...

math
Ted must have an average of 70 or more in his summer course to obtain a grade of C. His first three test grades were 75, 63,and 68. Write an inequality representing the score that Ted must get on the last test to get a C grade. Let X be the grade on the next test. The average ...

math
If the total bill at a restaurant, including a 15% tip, is $65.32, what was the cost of the meal alone? 1.15 X = $65.32 I am assuming that you can solve this equation for X (the cost of the meal alone). If you cannot, respond to this post with more questions. I hope this helps...

math
400 people found that 66 were left-handed. What percent of the 400 were left-handed? percent= 66/400 * 100

math
2x(x-2)=x+3 2x-2=x+3 What error has been made in solving this equation, and what could be done to aviod this error? The 2x was NOT multiplied by the contents of the parenthsis. Should have been 2x2 - 4x

math
850 douglas fir and ponderosa pine trees in a section of forest bought by a logging company. The company paid an average of $300 for each Douglas fir and $225 for each ponderosa pine. If the company paid $217,500 for the trees, how many of each kind did the compnay buy? Same c...

math
A bus leaves a station at 1 p.m, travling at an average rate of 44 mi/h. One hour later a second bus leaves the same station, travling east at a rate of 48 mi/h. At what time will the two buses be 274mi. apart? Set up two equations as I did in the two previous problems. Let us...

math
A bicyclist rode into the 5h. In returning, her speed was 5 mi/h faster and the trip took 4h. What was her speed each way? distance =rate*time The distance is the same. y = rate going z = rate returning Going: d = y*t = y*5 = 5y return: d = z*t = z*4 = 4z we know the return ra...

math
The length of a rectangular playing field is 5ft. less than twice its width. If the perimeter of the playing field is 230ft, find the lenght and width of the field. 2W+2L= perimeter = 230 L=2W-5 ============ Solve these simultaneous equations. Post your work if you need furthe...

math
how do I solve this problem 2x/2=(6-3y)/2? 2x/2=(6-3y)/2? I solved it for you in my initial answer. The 2 in the numerator cancels with the 2 in the denominator on th left side and x = (6-3y)/2 which is the solution of the initial equation you had for x in terms of y. You CAN...

mat
how do I solve this problem for x? 2x/2=6-3y You need to finish the post. What is the question? I solved it for x for you. answered above, also.

math
2x+3y=6 (solve for x) 2x+3y=6 Get unknown on one side and everything else on the other side. To do this we ned to move 3y. How to do that? Subtract 3y from both sides. 2x+3y-3y = 6-3y combine terms. 2x = 6-3y Now divide both sides by 2 2x/2 = (6-3y)/2 x=(6-3y)/2

math
The river rose 4 feet above flood stage last night. If a= the river’s height at flood stage, b= the river’s height now (the morning after), which equations below say the same thing as the statement? Explain your choices by translating the equations into English and c...

math
The Randolph’s used 12 more gal of fuel oil in October than in September and twice as much oil in November as in September. If they used 132 gal for 3 months, how much was used during each month? Let the usage in the three months be S, O and N. O = S + 12 N = 2S S+O+N = S...

math
Yuri has a board that is 98 in. long. He wishes to cut the board into two pieces so that one piece will be 10 in. longer than the other. What should the length of each be Let the shorter board's length be x. The other will be x+10. x + x + 10 = 98 2x = 88 Solve that for x ...

math
-4(2x-3)=-8x+5 Hi Cheryl! The first thing you have to do with this is multiply the -4 into the stuff in the parenthesis. -4*2x = -8x -4*-3 = +12 So the left side is -8x+12 = -8x +5 Now that I'm this far along, we see that there's no real answer to this. If we add -8x t...

Chemistry
I still don't get it

i really need help!! graphing
what do i put the viewing window as on my calculator if i have an equation of 2x^2+40000/x is x=0 an allowed value in the domain? So have to make allowances for x near zero. Check the problem: is x cited to have a particular domain? If not, then plot this in two parts x large ...

pre calc. help!!!!!!
i am building a rectangular swimming pool. the pool is to have a surface area of 1000 ft.^2. it also has a uniform walk way of 3 ft. surrinding it. X is the lengh of one side of the pool, and Y is te lengh of the other side. A.) express the area of the plot of land needed for ...

precalculus
A can with the ratio of the height of the radius is 4 to 1. a. express the volume of the can as a function of the radius, r. b. express the volume of the can as a function of the height, h. c. if you want the can to have a volume of 100cm cubed, what does the height have to eq...

Please help with English!!!
Which one of the following sentences does not contain a serious verb error? 1. They staying there now. 2. She want a promotion. 3. If I was younger, I'd pursue another line of work. 4. We had sang that hymn last week. Cheryl, if you read those out loud, you will quickly fi...

Finance/Accounting
I'm not sure how to work this oroblem. Can someone assist me. revenues of $230,000 and expenses, including income taxes, of $190,000. On December 31, 2005, Edgemont had assets of $350,000, liabilities of $80,000, and capital stock of $210,000. Edgemont paid a cash dividend...

Punctuation within Sentences—Parentheses
The police officer checked her rear-view mirror when she heard the screeching tires. (Someone had rear-ended her the night before).

brain teaser help-jenn
50=lashes with a wet noodle

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