Saturday

July 2, 2016
Total # Posts: 2,271

**Bio**

How would I know when to use a mathematical model. How would I know when to use a conceptual model, computer model, and physical? Studying for a quiz :)
*September 21, 2015*

**Math**

From January 1, 2000 to December 31, 2004, First Bank paid 5% interest, compounded monthly. On January 1, 2005, they lowered their rate to 3% interest, compounded monthly. I deposited $100 at the end of each month beginning in January, 2000. How much did I have in my account ...
*September 21, 2015*

**Math**

Will someone explain how to do this Simplify the expression -10-7(n-3) I understand these, just not this one
*September 20, 2015*

**Math**

Will someone please explain to me how to simplify -10n - 6 + n - 5 And -6(n-9)
*September 20, 2015*

**chemistry**

atmospheric temperature changes the state of these things, but i do not know to what? diamond, mercury, oxygen, clay, neon, and cooking oil?
*September 18, 2015*

**trigonometry**

π/10 = (0.95, 0.31) 3π/10 = (3/5, 4/5) 20° = (28/30, 10/30) are these correct? tan 70° = 28/10 csc 21π/10 = 1/0.31 sec 17π/10 = 5/3
*September 18, 2015*

**circle trigonometry**

sin θ=2/3 and θ correspond to a point in quadrant 2. cos θ=
*September 18, 2015*

**precalc (check answer)**

l(x)=3-x^2 l(x)=7 x=-2 am i correct?
*September 17, 2015*

**algebra**

i need help with a problem, if not fully explained then i might need help with another problem. I was given the formula for the volume of a sphere i, but i still dont know what to do. if you could explain to me thatll be great. Tanks The radius of a spherical balloon is 1/2 ...
*September 17, 2015*

**science!**

i want you to review the (3)descriptions and the (4)questions and correct my answers of this worksheet called Scientific Method Bikini Bottom Experiments. tank you tutors for reviewing the descriptions and questions and correcting my answers. The Bikini Bottom gang loves ...
*September 15, 2015*

**algebra**

tank you tutor reiny
*September 15, 2015*

**algebra**

please check the following answers and review the questions. tank you 1. 2/3 * negative 6 * 5 my answer: -100 2. a landscaper installs 12 sections of trellis. each section of trellis is 3/4 yard long. how many yards of trellis are installed altogether? my answer: 9 yards of ...
*September 15, 2015*

**Math**

When the tap is turned on, a sink will fill at a uniform rate in 60 seconds. If the plug is removed, the sink will empty at a uniform rate in 80 seconds. How long will it take to fill the empty sink with the tap on and plug removed?
*September 13, 2015*

**science!**

tank you bobpursley, but i changed the problem to: To relate amount of ethylene to the maturity of the fruits and the control group to: No control group, but each of these fruits should have been given marurity stage with no ethylene
*September 9, 2015*

**science!**

i have 6 questions, each with an answer. i would appreciate if you review the questions check my answers. tank you very much tutors. variables and graphing assessment practice Ethylene is a plant hormone that causes the fruit to mature. The data below concerns the amount of ...
*September 9, 2015*

**math**

tank you very much ms. sue for checking my work ! much appreciated
*September 9, 2015*

**math**

i have 5 questions about adding rational numbers and want you to check my answers. tank you for reviewing my questions tutors 1. -3/2 - 7/4 + 1/8 my answer: -.3375 2. Alex borrowed $12.50 from his friend Danilo. He paid him back $8.75. How much does he still owe? my answer: ...
*September 9, 2015*

**physical fitness (not homework)**

tank you two lover yup and damon, i don't like medicine butt tanks for that suggestion. i like drinking ice cold water so i will take that ! its very possible that i'm overdoing it since i had to do all of them each for 1 minute, and i tried my very best.
*September 9, 2015*

**physical fitness (not homework)**

how do i alleviate the pain in my stomach after doing curl ups, crunches, and planking ? tank you
*September 9, 2015*

**science!**

okay so for number 20 i think: Lisa bought Rogooti to see if it effected the speed of hair growth. Lisa rubbed the Rogooti on Bart's hair every day with the same amount of Rogooti and compared Bart's hair's length to the length of his hair the day before. control ...
*September 8, 2015*

**science!**

this question is not a question but 20 questions. i appreciate if you review all my answers, but i wont provide an answer for the last question (most probably since i didn't finish answering it or typing it out since i only have an hour to do that). now, let's get ...
*September 8, 2015*

**calculus**

D(x)=x^2+2x C={(x,y)|y=4x-5} 1) D(C(x)) f(x)=1+3 sqrt of x+2 2) f(f(x))
*September 8, 2015*

**Precalc**

I mean h(D(x)). Sorry about that. That's how my teacher wrote it. would the answer be: 7^2+2(7) = 49+14 = 63?
*September 8, 2015*

**AP Statistics**

The severity of side effects experienced by patients while being treated with a particular medicine is under study. The severity is measured on the scale: none, mild, moderate, severe, very severe. a. Name the variable of interest. b. Identify the type of variable. I answered ...
*September 8, 2015*

**jiskha**

ah, tanks for the clarification reed ! i wanted answers from other tutors so i know when to post questions as well, butt thank you for telling me your time zone and time. much appreciated
*September 7, 2015*

**jiskha**

so im wondering, what time do the main tutors log off of jiskha ? like some main tutors, reiny, damon, steve, ms. sue, and writeacher. i don't see any tutors that are answering the 9 current questions, but i know that writeacher is still on because he/she already answered ...
*September 7, 2015*

**english (continued my rough draft)**

When I rush to do my homework I do get them done, but they most likely have errors which is why I hate waking up late and rushing to do my homework. Even now I still do my homework. Even now I still do this, having to wake up early and think it's no big deal then waking up...
*September 7, 2015*

**english**

oh i forgot to put in my original draft, which i also forgot to say it was a rough draft. my rough draft needs to have multiparagraph, insights, transitions, and that i wrote a narrative. rough draft: choices An incident from my circle map is when I chose to do homework later ...
*September 7, 2015*

**enlgish**

im sorry writeacher ! the paragraph above was posted before you posted that, i didn't rewrite, revise it, or have someone read it aloud. tank you very much for the link tutor writeacher and giving me advice! i will post more paragraphs !
*September 7, 2015*

**enlgish**

i think i fixed my revision with all those sentence fragments. I open and close my eyes for a few times and blink faster. I then immediately lift my head from the brown couch to turn it to the side and lift my body to look for the cable in my living room or a device that tells...
*September 7, 2015*

**enlgish**

#1 my assignment is to revise my entire personal narrative (beginning, middle and end) of my rough draft that i forgot to include and is on another question (sorry about that) #2 i have to revise my rough draft that i already written #3 can you give me more information on ...
*September 7, 2015*

**english**

oh shoooot i mean english, wow i already made a mistake
*September 7, 2015*

**enlgish**

not a question, just want you to check my revision of a draft with an action lead in. this is just the revision of the beginning, i may post more revisions of my draft for the middle and end, and will probably ask questions in the answer section. Revision For Beginning Opening...
*September 7, 2015*

**science!**

first go to my original question which has the data table with my name, anon, and the school subject as science! tanks. okay so i have a question and most likely will be posting more questions regarding of constructing a graph. my question is, x axis is where you put the ...
*September 7, 2015*

**algebra**

for #5 the ratio is 1.5/7.5 not 1.5/7. thank you very much reiny for reviewing my convoluted question, sorry i meant questions
*September 7, 2015*

**algebra**

i need you to check my answers for the following questions: use the table to answer problems 1 to 4. the table lists the commuting times for 5 people. write each ratio in the form a/b, and then as a decimal. tell whether each decimal is a terminating or a repeating decimal. ...
*September 7, 2015*

**science!**

i like my hypothesis, i don't need to prove it's right, right ?? i just chose sunlight because of the data table that shows that sunlight grew better than red light and green light. for temperature as a constant, do i write the temperature to spanish needle seeds ? ...
*September 7, 2015*

**science!**

i want you to check my answers for the questions and i might need help on constructing the graph that i need to do for problem 7. variables and graphing assessment practice some students wanted to investigate the effect of light on the growth of spanish needle seeds (bidens ...
*September 7, 2015*

**Chemistry**

What relationship exists between the electron structure of a Group A ion and the electron structure of the nearest noble gas? Why do boron, carbon and silicon not form simple ions? How do they satisfy their electron requirements?
*September 7, 2015*

**calculus**

what is the range for the function j(x)=5+sqrt of 2-x
*September 5, 2015*

**writing**

Sorry, I meant Im thinking C not D
*September 3, 2015*

**writing**

Jack was told the overall content of his paper was weak. What does this mean? A. The tone of his paper was not original B. He had too many grammatical errors. C. The overall ideas in his essay were not fully developed. D. The flow of his essay was inconsistent. Im thinking D?
*September 3, 2015*

**reading**

In order to change information from useless facts into information you can absorb and retain, you should do which of the following? A. Ask questions B. Draw conclusions C. Anticipate information to come D. All of the above Im thinking A or D?
*September 2, 2015*

**social studies (history day project)**

Before I introduce my assignment and what I need to do, I tried my best copying off from the instructions given and it's long, obviously. (and I may have some errors but please excuse those) I have another page of directions, but it will be short. Oh and we need to do this...
*August 31, 2015*

**algebra**

complete the table to answer 1-4. i don't put a table here because i can't and it's time consuming, so i made up word problems for the table. 1. for the abc company, you own 5 shares and lost $2 on monday, gained $5 on tuesday, and lost $1 on wednesday. did your ...
*August 30, 2015*

**SCIENCE!**

that's why i said i will be posting the answers in an hour, butt i didn't get a chance to. sorry about that psydag. thanks for the help. please check the following (and add statements if needed): a. which statement(s) contain conclusions? i think the ninth statement. b...
*August 29, 2015*

**SCIENCE!**

the second worksheet of SCIENCE! for today performing an experiment read the following statements and then answer the questions. 1. a scientist wants to find out why sea water freezes at a lower temperature than fresh water. 2. the scientist goes to the library and reads a ...
*August 29, 2015*

**SCIENCE!**

okay, sorry for the wai, these are my answers, so please check the following: a. in which statement is a prediction made? my answer: the seventh statement b. which statement states a problem? my answer: the fifth statement c. in which statement is an experiment described? my ...
*August 29, 2015*

**SCIENCE!**

last worksheet for SCIENCE! for today analyzing elements of a scientific method read the following statements and then answer the questions. 1. you and your friend are walking along a each in maine on january 15, at 8:00 am. 2. you notice a thermometer on a nearby building ...
*August 29, 2015*

**SCIENCE!**

nevermind, i got the answer for #6, tank you very much !
*August 29, 2015*

**SCIENCE!**

so for #6, what was the mistake ? and tank you for informing me on finding the density, damon !
*August 29, 2015*

**SCIENCE!**

tank you very much and if i have more questions that arise, please answer damon ? tanks !!!!!
*August 29, 2015*

**SCIENCE!**

i was not taught in my science class any of this, probably a review over 6th grade science, because i learned these in 6th grade.(im in 7th grade now) identifying Errors read the following paragraph and then answer the questions. andrew arrived at school and went directly to ...
*August 29, 2015*

**Dear Jiskha**

it's okay sammy
*August 29, 2015*

**algebra**

tank you very much ms. sue !!
*August 28, 2015*

**algebra**

by finding $5 on the sidewalk, is that the change in the amount of money mrs. armor had? just $5 ??
*August 28, 2015*

**algebra**

write an expression to represent each situation. then find the value of each expression to solve the problem. 1. on saturday, mrs. armor bought 7 pairs of socks for $3 each, and a sweater for her dog of $12. then she found a $5 bill on the sidewalk. over the course of saturday...
*August 28, 2015*

**SCIENCE!**

tank you very much drbob222 !
*August 28, 2015*

**SCIENCE!**

more on hypotheses hypotheses help explain puzzling situations or events. hypotheses answer "how", "what, and "why" questions. explain each of the following situations with a hypothesis: 1. you hang a bird feeder, fill it with food, but no birds come ...
*August 28, 2015*

**algebra**

tank you very much steve, but i still don't understand because i wasn't taught of this in my class since we were just reviewing. so, i don't know how you did number 9 and thanks for that conversion hehe and i have a question for #9, so from 6 yards to 15 yards deep...
*August 27, 2015*

**algebra**

simplify. 3 - 2(4 - 7) ÷ 9 i dont know what to do after i subtract 4 and 7 which is -3 then multiply 2 which is -6 then i don't know what to do afterwards, i know pemdas so -6 divided by 9 cannot be so please help on that. the integers from -3 to +3 can be used in ...
*August 27, 2015*

**algebra**

oh shoot i wasn't thinking of that even if it said simplify, tank you very much steve
*August 27, 2015*

**algebra**

Simplify. 3 - 2(4 - 7) ÷ 9 i dont know what ta dooooo after i subtract 4 and 7 which is -3 then multiply 2 which is -6 then i don't know what to do afterwards, i know pemdas so -6 divided by 9 cannot be so please help on that. the integers from -3 to +3 can be used ...
*August 27, 2015*

**Ms. Sue please**

Please don't get mad, but I have no where else to turn to. This doesn't deal with school at all.. My eyes have gotten worse. I have to wait for my new glasses with a new prescription lens. What's your opinion? Do you think it Will help at all wearing my current ...
*August 25, 2015*

**Calc**

Describe the given set with a single equation or with a pair of equations. The set of points in space that lie 2 units from the point (0,0,1) and, at the same time, 2 units from the point (0,0,-1). I wrote distance equations for both set them equal to each other and got z=0. ...
*August 25, 2015*

**English (3rd grade)**

Thank you very much, Writeacher !
*August 25, 2015*

**English (3rd grade)**

Where can I read Berries, Berries, Berries ? Wasn't given the author from 3rd grader and her school is August Ahrens Elementary School. The book has a bear on the front cover and the bear is looking for berries for Spring. I have already searched the book on google and I ...
*August 25, 2015*

**Science**

For the string telephone, doesn't controlled variable mean the variable or variables that aren't changed ? So wouldn't that be stating that the string telephone is the one that isn't being changed, like to a different model ? tanks for the other controlled ...
*August 23, 2015*

**Science**

There can be several controlled variables. If an experiment is to be useful, only one variable at a time can be manipulated intentionally. All other variables must be controlled throughout all parts of the experiment. If more than one variable is altered, the results of an ...
*August 23, 2015*

**Algebra**

Sorry for late reply, I got $75 when I divided. I need to find the difference between what they paid for each uniform, which is $75, and what they got for return which is $40, so do I still need the variable ? tanks very much Ms. Sue
*August 23, 2015*

**Algebra**

Solve. Show your work. A high school athletic department bought 40 soccer uniforms at a cost of $3,000. After soccer season, they returned some of the uniforms but only received $40 per uniform. What was the difference between what they paid for each uniform and what they got ...
*August 23, 2015*

**Mathematics**

ok. thanks for the help.
*August 21, 2015*

**Mathematics**

that's the thing. they don't list any pairs.
*August 21, 2015*

**Mathematics**

the sum of all digits in each pair is 19 and the sum of the numbers in each pair is 100. I don't understand what the question is trying to ask? Is it to find that number, or?
*August 21, 2015*

**Science**

8 questions and 1 question in the end on my worksheet, but I have 8 questions on this site to ask so I don't have 9 questions
*August 20, 2015*

**Science**

I have 8 questions and 1 question in the end that I don't need help with. Identify possible variables in the following situations. What variables can affect the sprouting of a bean seed? I think (I didn't answer yet so I'll just go with what I think oh and these ...
*August 20, 2015*

**Algebra**

Thanks again Steve!
*August 20, 2015*

**Algebra**

I have 2 problems and 1 problem to check on. Write a mathematical expression to represent each situation. Then find the value of the expression to solve the problem. #1 A football team loses 4 yards on each of three plays. Then they complete a pass for 9 yards. What is the ...
*August 20, 2015*

**Math**

Haha thanks you guys!
*August 19, 2015*

**Math**

I have 5 problems. Write a mathematical expression to represent each situation. Then find the value of the expression to solve the problem. 1. You play a game where you score -6 points on the first turn and on each of the next 3 turns. What is your score after those 4 turns? ...
*August 19, 2015*

**Math**

Susan wants to use blue, yellow, green, and pink paint to decorate her house. She needs 3 times as much blue paint as yellow paint and 1/2 as much yellow paint as green paint. She needs 3 1/4 gallons of pink paint, which is 3/4 of a gallon more than the green paint she needs. ...
*August 19, 2015*

**math, pls help ASAP**

what is 2/5 of 25
*August 15, 2015*

**math!!!!!!!!!!!!!**

thank you for responding! but I mean as a number, like, 1 or 5 or 8
*August 15, 2015*

**math!!!!!!!!!!!!!**

what is 2/5 as a regular number
*August 15, 2015*

**math pls help**

What is the product of 58 and 34?
*August 14, 2015*

**Math**

In a science competition with ten problems, a student gets 5 points for a correct answer and loses 2 points for an incorrect answer. If Alice answered every problem and her score was 29, how many correct answers did she have?
*August 12, 2015*

**Math**

How do you find an eighth of an inch on a ruler ?
*August 12, 2015*

**Geometry **

Given the rectangle ABCD has a total area of 72. E is in the midpoint of BC and F is the midpoint of DC. What is the area of the inscribed triangle AEF?
*August 12, 2015*

**math **

I have two questions: The temperature changed from 7ºF at 6 P.M. to -5ºF at midnight. What was the difference between the high and low temperatures? What was the average change in temperature per hour? The difference between the temperatures is 12ºF because 7...
*August 12, 2015*

**english**

Thanks !
*August 12, 2015*

**english**

Are the words wear, lay, worn, black, passing, wood, and step connotative words ? Thanks
*August 12, 2015*

**math or algebra**

I have two questions The temperature changed from 7ºF at 6 P.M. to -5ºF at midnight. What was the difference between the high and low temperatures? What was the average change in temperature per hour? The difference between the temperatures is 12 because 7 - (-5) = 7...
*August 12, 2015*

**Microeconomics**

Total Variable Cost = (Number of Workers x Worker’s Daily Wage) + Other Variable Costs Total Costs = Total Variable Costs + Total Fixed Costs Total Revenue = Price * Quantity Average Variable Cost = Total Variable Cost / Units of Output per Day Average Total Cost = (Total...
*August 8, 2015*

**science**

your dumb. learn this yourself!!
*August 4, 2015*

**math! VERY hard! **

You need 3 pounds of fruit for a fruit salad. You already have 3/4 pound apples and 1/3 pound grapes. Drag fruit to the box that you can buy so you will have exactly the right amount with no extra. the choices are: 1/2 2/3 1/8 3/4 5/8 you can use those more than once to get to...
*July 30, 2015*

**math**

thank you! <3
*July 30, 2015*

**math**

1/5 of your art-supply money goes for brushes. If you also spend 1/2 of your money on paint, what fraction of your money will you have left?
*July 30, 2015*

**math**

I WILL BE REPOSTING THE QUESTION WITH THE CORRECTED MISTAKES!!!!!!!!!!!!!!!!!!!!!
*July 30, 2015*

**math**

1/2 (:
*July 30, 2015*

**math**

One-fifth of your art-supply money goes for brushes. If you also spend 12 of your money on paint, what fraction of your money will you have left?
*July 30, 2015*