# Math grd12

4,660 results, page 27-
## Math

On a 20 question math test, your teacher gives you five points for every correct answer and takes away one point for each incorrect answer. If you score 70 on the test, how many did you get correct?

*asked by Brian on June 19, 2016* -
## arithmetic

I do not understand my math problem. The problem is below. A recipe for a loaf of bread calls for 3/4 cup of oatmeal. How much oatmeal do you need if you make half the recipe?

*asked by Jared on December 9, 2009* -
## calculus help please

dy/dx = 2y^2 Integrating...y=2/3 y^3 + C put 1,-1 into the equation, and solve for C. Then find the y for x=2 if y= a^uhttp://math2.org/math/integrals/tableof.htm see exponential functions. dy/dx=2y^2 and if y=-1 when x=1, then when x=2, y=? how do i get x

*asked by bobpursley on December 10, 2006* -
## Math

I'm doing math through correspondence so material is not explained very well. I would appreciate if someone could explain this to me. This lesson is review of set theory and first degree equations. Indicate whether each of the following statements is true

*asked by Alicia on March 24, 2011* -
## Integrated science

An insect inside a bus flies from the back toward the front of the bus at 3m/h. The bus is moving in a stright line at 40m/h. What is the speed of the insect? Show you work. I was woundering if someone could help me find the math for this problem? But I

*asked by John on September 23, 2007* -
## Grade 12 Data Management math

I'm doing math through correspondence so material is not explained very well. I would appreciate if someone could explain this to me. This lesson is review of set theory and first degree equations. Indicate whether each of the following statements is true

*asked by Alicia on March 24, 2011* -
## To Reiny

I just watched the video you posted the other day. Wow!!! That's scary! It's far worse than Tom Lehrer's 1960s "New Math." http://www.youtube.com/watch?v=SXx2VVSWDMo&feature=related http://members.aol.com/quentncree/lehrer/newmath.htm

*asked by Ms. Sue on October 13, 2008* -
## Social

The agricultural revolution made us stop chasing our food because we started farming and it gave us free time. Now our free time helped us think of what we will do tomorrow. So which came after and so on. your choices: math,science, and literature trade

*asked by T.M.L. on April 28, 2009* -
## Calc

The sun is shining and a spherical snowball of volume 210 ft3 is melting at a rate of 14 cubic feet per hour. As it melts, it remains spherical. At what rate is the radius changing after 3 hours? I posted this question before and when i went back and did

*asked by Bubba on February 14, 2011* -
## Social emergency

The agricultural revolution made us stop chasing our food because we started farming and it gave us free time. Now our free time helped us think of what we will do tomorrow. So which came after and so on. your choices: math,science, and literature trade

*asked by T.M.L. on April 29, 2009* -
## algebra

can anyone please help me set this problem up, I can do the math but I have tried for hours... Air fare club offers membership at $300.00, at least 50 people must join.For every member over 50 their fare will be reduced by $2 for every member. Due to space

*asked by dino on October 22, 2012* -
## Algebra

This is not math related, but I will be gracious for your help. Solve the following alphabet puzzles. Examples: 26= L. in the A. Answer: 26=letters in the alphabet 54= C. in a D (with J). Answer: 54= cards in a deck( with the jokers$ 140=M N of C in a T

*asked by Anonymous on September 6, 2012* -
## math

you have 3 hours to do your homework. you spend 45 min on math. you want to divide the time remaining equally along 4 subjects. write and solve the inequality to find the # of minutes you can spend on each subject. I know the answer is 33.75 but can you

*asked by hunter on February 20, 2011* -
## Math

Two figures are similar with a similarity ratio of 4 and one side of the figure is 3 cm long. Find the lenght of the side of the similar figure. I don't really know if I have to try to do it like an equation or if there's a formula for this. Sorry if

*asked by Marta on September 21, 2016* -
## statistics

A math professor notices that scores from a recent exam are normally distributed with a mean of 64 and a standard deviation of 5. Answer the following questions using integer values. What score do 75% of the students exam scores fall below? And, how was

*asked by Dora on February 14, 2012* -
## AP Physics 1

This isnt exactly a hw question... but for anyone who knows: Im considering to take AP Physics next year as a challenge. I'm going to be taking pre-calc next year ( i already took my algebras) and im not too great in math but im good at memorizing and

*asked by gallant on April 2, 2017* -
## math

I have a question on my math that my teacher cant help me with because this one is for try it. Can you help me see if it is right?: It says: 12 . Wich is equal to 30 hundreths? A)3 thousandths B)3tenths C)3 tens D)3thousands I think the answer is B but, it

*asked by nicole on May 7, 2015* -
## Algebra

I used an online math site, to explain quadratic equations. But the thing is, they said that (-4)^2 is 16, but my calculator said -16. Why is that? And also, how does the square root of 40 break down into the square root of 4 and the square root of ten?

*asked by Rachelle on November 12, 2008* -
## math

I need someone to help explain how this math problem works. I am not sure how to convert this fraction below to arrive at 100.8 degress. 7/25 .360 degrees=100.8 degrees How did this answer of 100.8 degrees come about in this equation?

*asked by Dave on February 23, 2011* -
## Trig

I was doing this problem sin^-1 (4/5) if I'm not mistaking most teachers would say that .927295218 radians is wrong is just an estimation and therefore is wrong so I'm justified in putting this on my paper instead right ( ln( (4i +3)/5)/i ) right? She

*asked by Kate on July 23, 2010* -
## math

not sure if this had to do with math but my professor gave us this last hw assignment that i don't understand at all. It has to do with the grade scaling he does. 4x Exams = 37450 HW = 9362 Final = 16385 Lab = 23407 Recitation = 7022 Total Points = 93626

*asked by Anonymous on July 5, 2012* -
## Estimating sums and differnces of fractions

Hello! My 10 year old daughter is having trouble understanding these preparation questions from her math teacher. I know the answer but I don't know how to explain it to her.. I'm sorry if that doesn't make any sense. When I was in 5th grade they taught us

*asked by Mrs. Trisha on December 10, 2014* -
## ELA

Which sentence uses an infinitive as an adverb? A) My favorite board game to play is stored in the basement. B) Nicole wants to learn the art of rhetoric before next year. C) Dave's favorite thing to do is to walk his dog every evening. D) We met after

*asked by Hi on December 4, 2017* -
## MATH

Suppose 10,000 is invested at 6 percent.how much additional money must be invested at 8 percent to produce a yield on the entire amount invested of 7.2 percent. ( Please show each and every steps of this math with the rough works) THANK YOU SO MUCH.

*asked by HELP NEED HELPs!!!! on October 21, 2013* -
## math

John's account of 98.50 has been delinquent for 3 months. After 90 days office charges a 2% service charge, compounded monthly that is added to future bills. What would be the amount owed after 9 months? My math is 98.50 x 0.02 = 1.97 1.97 x 12 months =

*asked by JOHNSON on May 9, 2010* -
## Math

I need some help please. I don't understand the math that we are doing. Please explains to me in detail how to do radical expressions and like how to simplify them and stuff. I don't get it and it would be much appreciated. here is one of the problems.

*asked by MissyQ on January 7, 2009* -
## English

A: Seho, what are you doing? B: Hi, Inho. I'm doing my math homework. A: Hurry up! We have to play soccer in the playground. B: We have a soccer match on Thursday. Today is Wednesday. A: No, it's Thursday today. Come here quickly. B: Sorry. I'll be there.

*asked by rfvv on September 3, 2012* -
## Math

I have a question for math that I attempted to, I would like to make sure it was right by asking you guys. Here it is 45) Jerry was making lemonade from frozen concentrate. The directions say to empty one can of the concentrate into a one gallon container

*asked by Anonymous on February 8, 2016* -
## How conceps develops

As a math teacher, Mrs. Wright has high expectations for all of her students. However, she also provides a lot of support for all of her students. Mrs. Wright is employing which of the following Principles of School Mathematics? A. Technology B. Learning

*asked by Daniea on January 15, 2015* -
## english

Im deciding my courses for fall semester please advice if basic math and anatomy&psysiology with religion is too much of workload, my other choice would be a&p,basic english and religion.What do you think. note.. I know whatever is chosen is hard work,i

*asked by %%%Rena%%% on July 22, 2012* -
## Algebra

I have just one math problem that I need a little help with. Please give me the answer, and walk me through it, too, to help me understand it. Thanks! The price of a ring is decreased by 40% and the resulting price is increased by 50%. The final price is

*asked by Celina on November 6, 2008* -
## Math

Please explain how to figure out the following 7th grade math problem: If a rubber ball bounces exactly 1/2 the height from which it is dropped; and it is dropped from the top of a building that is 64 meters tall, how high will the ball bounce on its

*asked by Jaleel on October 30, 2007* -
## Statistics

One of my classmates ask this question and it wasn't answered so now I am asking it and of course we are all struggling with no strong Math background Case 6.4 Maternal Serum Screening Test for Down syndrome Please keep in mind that I do not have a Math

*asked by Belinda on February 7, 2011* -
## math

4 numbers are placed in a bag. two are removed and total 2.4. The numbers are returned to the bag and the process is repeated 4 more times. The totals are 2.4 2.5 2.6 2.7 and 2.8. What are the 4 numbers in the bag? please let me know how you arrived at the

*asked by Harold on January 26, 2010* -
## geometry

I need help with my math.. Can someone please help.. In the coordinate plane point X lies on line segment MN. The coordinates for MN are (-1,3) and (7,10). If the ratio of the length of MX to the length of XN is 2:5, what is the y-coordinate of point X?

*asked by jamie on November 8, 2016* -
## Math

I need to figure out how to make graphs on a computer for a math project. Any help? I need to make histograms, back to back boxplots, and back to back stemplots.

*asked by Kelsie on September 30, 2012* -
## Maths

3x + 1 < -2 subtract one from each side, then divide both sides by three. first you need to look at each side of what ever your looking at and subtract 1 from each number then divide the numbers by 3 I have trouble with math all the time. so I was

*asked by Jess on November 9, 2006* -
## 3rd math

okay Math genius! Help me out here. I am a number greater than 99 and less than 1,000. Two of my digits that aren't next to each other are the same. My tens digit could not be greater and it is 1 more than my hundreds digit. What number am I?

*asked by Allison on September 6, 2012* -
## Math

I need help solving the problem below. Chris answered 19 out of 25 questions correctly on a math test. What percent of the questions did she answer correctly? Is the answer 76% 19/25= 0.76

*asked by Rachel on April 13, 2016* -
## chemistry

how many moles of hydroxide ions are there in 82.35 mL of a 2.164M Sr(OH)2 solution? i understand how to do the math for problems like these, but i don't know how to find the moles of just hydroxide ions.

*asked by lyne on March 15, 2009* -
## math

if there are 19 boys and 24 girls in the math class. 10 boys and 15 girls are freshman. if you randomly choose a student, what is the probability that it will be a girl or freshman?

*asked by jenn on November 1, 2016* -
## math

In a math contest of 20 problems, 5 points were given for each correct answer. If Janelle answered all 20 problems and scored 72 points how many correct answers did he have?

*asked by evelyn on June 22, 2016* -
## SATs

I am taking the SATs soon and i feel like i have a lot of reasources, but i don't have enough time to study all of it, how do i condense? What is the most important i think my best section would be math, then writing, then reading.. (i don't think sending

*asked by Lynn on October 5, 2008* -
## AED

How do classroom management issues differ, depending on the subject matter? For instance, how can you manage an English lang. arts or social studies classroom differently than you can a mathematics or science classroom? Math and science you can do

*asked by troyer0269 on November 30, 2008* -
## Math

A man selling fruit has only three weights. But with them he can weigh any whole number of kilograms (from 1 kg to 13 kg) inclusive on his balance. What weights does he have? Responses math - Kalyan, Friday, September 5, 2008 at 4:38am The man had 1kg, 3kg

*asked by Stephanie on September 5, 2008* -
## Algebra

I am preparing for a quiz and received a small guide (mini guide) over the weekend. So I have all the answers to the questions but I want to learn how to solve this specific problem: 2^(5/2)- 2^(3/2) and the answer is 2^(3/2). To clarify the numbers in the

*asked by Paul on January 8, 2012* -
## math

Decide if it's permuatation or combination . 1-how many teams of 4 horses be made if there were 9 horses in total ? 2-mike has nice baseball trophies to arrange on the shelf . How many different ways can be arranged ? 3-in a math class , there are 24

*asked by jane on September 18, 2012* -
## math

Robert's acct p $98.50 has been delinquent for three months. Office procedures charge a 2% service charge after 90 days componded monthly and is added to future bills. What will be the amount owed after nine months? I did $98.50 x 2% = $1.97 $1.97 x

*asked by LASTDAYS on May 13, 2010* -
## math

Decide if it's permuatation or combination . 1-how many teams of 4 horses be made if there were 9 horses in total ? 2-mike has nice baseball trophies to arrange on the shelf . How many different ways can be arranged ? 3-in a math class , there are 24

*asked by jane on September 18, 2012* -
## trigonometry

Find the distance using the appropriate arch length. A television tower 520m high subtends an angle of 2deg30'. How far away is the tower? some people that helped me alot were Reiny, Damon, bobpursley, and drwls..so i just wanna say thnks to you guys...are

*asked by y912f on January 16, 2009* -
## Financial management

If you deposit money today into an account that pays 6.5 percent interest, how long will it take for you to double your money? You can get a pretty good estimate by using the Rule of 72. Divvied 72 by 6.5 to obtain your answer. The formula depends on when

*asked by T on July 3, 2007* -
## algebra honors

I was placed into algebra honors instead of advanced math.. I am in 7th grade.. I have to maintain an 80% for the entire year or go to virtual school all summer.. My question is: Is there a special technique, formula, or very useful site that might help me

*asked by Jarrad on October 5, 2010* -
## MATH LOGIC AGAIN

Hi can some one go back to my Math logic problem and possibly give me one more example? thanx :) I found a paper you may want your library to get for you: http://cat.inist.fr/?aModele=afficheN&cpsidt=13604737 It is probably in the local college library. I

*asked by steph on December 3, 2006* -
## maths

f(x)=x^3+px^2+qx+6 this formula can also be written in "factorised form" that is, f(x)=a(x+b)(x+c)(x+d) can someone please teach me how to change a funtion into it's factorised form? thanks the following link has some nice step-by-steps illustrations and

*asked by Emma on May 18, 2007* -
## math

I need ideas for a grade three math project. A collection of 1000 items that can be fixed to a sheet of bristol board. All and any ideas would be appreciated How about uncooked elbow macaroni? You could even use food coloring to dye them to represent

*asked by Sheila on January 15, 2007* -
## MAth Im stuck on question can anyone help me ?

Im stuck on this question can anyone help me ? I thought it was b but that's wrong Which situation can be modeled by tossing a coin 3 times A)choosing which one of sixteen teams will win a tournament? B)picking one of six math teacher, C)decide which

*asked by Mikah on March 27, 2011* -
## chemistry

suppose that a large volume of 3% hydrogen peroxide decomposes to produce 12mL of oxygen gas in 100 s at 298 K. Estimate how much oxygen gas would be produced by and identical solution in 100s at 308 K hi can you please help me set up this problem, then I

*asked by Chloe on August 6, 2015* -
## Science

Hey....I need help with my homework. I'm in 9th grade, high school. Its pyhsical science about Atomic Math.. Heres the question: Multiply the atomic number of hydrogen by the number of electrons in mercury, which has an atomic number of 80.

*asked by Sammi on December 6, 2007* -
## math work sheet

I do not get my math !!!!!!! I mean when it says like a number equals blank percent of a number 13 equals % of 16 what do i do

*asked by Anonymous on January 27, 2013* -
## Math

There are 8 more girls in the math club. The club has a total of 44. How many are girls and how many are boys?

*asked by Candi on August 16, 2011* -
## math

Land growing continuous grain corn as a cash crop loses soil at a rate of 14.0 metric tonnes ha-1 yr-1. This is a fertile soil, which has an organic matter content of 3.8% and nitrogen content of 0.35% (both by mass). a)Calculate how long it will take to

*asked by Ramya on November 12, 2009* -
## 6th grade math

on a farm there is 18 pigs and chickens (all together). There are 52 legs, how many pigs and how many chickens are there? Show how you got your answer. i know there are 10 chickens and 8 pigs, but i did that through trial and error, can you help me figure

*asked by m-cook on August 17, 2009* -
## Math Repost for Mecca

Math - mecca, Wednesday, October 24, 2007 at 9:20pm Lauren has collected 150 nickels and dimes. She has 70 more nickels than dimes. How many nickels and how many dimes

*asked by Ms. Sue on October 24, 2007* -
## math

please check my answers 1.which is smallest 5/8,3/4,9/16,7/8 =9/16 2.subtract 6 3/10-4 11/15=1 17/30 3.estimate 6 1/8* 7 4/5=48 4.lcm of 20,32=160 jon spent 1/3 of his study time doing math and 2/7 preparing for history exam. what fraction of his study

*asked by p on September 18, 2009* -
## math

Posted by mota on Saturday, March 1, 2008 at 3:34am. THE MASS OF THE SUN IS ABOUT 10^27 METRIC TONS , OR 10^30 KILOGRAMS . HOW MANY KILOGRAMS ARE IN ONE METRIC TON ? ----------------------------- math - drwls 1000. ----------------------------- explain

*asked by mota on March 2, 2008* -
## Math

How do you solve a double sided variable? I am not sure what you are asking. Even so, since this is not my area of expertise, I searched Google under the key words "'double sided variable' math" to get this possible source:

*asked by Sammi on September 26, 2006* -
## 4th grade math

I too am trying to help my son with his math homework. Problem is: at a Pokemon Tournament there are 6 players. Each player counted his cards at the beginning: These are the landmarks for the group: Minimum: 8, Maximum: 16, Moes: 13, Median: 14. Lisrt the

*asked by Kay on October 18, 2011* -
## ecology

I am not very good in science, and math. However, I do very well in english, writing, puncuation, and grammar. Here is my question. Do you believe humans can harvest forest resources in an enviromentally friendly way? Or, should national forest be left in

*asked by Kate on June 6, 2009* -
## Aaron

Is 2041 rounded to the nearest hundred 2000 or 2100? http://www.math.com/school/subject1/lessons/S1U1L3GL.html Read about rounding off whole numbers. Ask yourself this: Is 2041 closer to 2000 or 2100? Same answer.

*asked by Math Question on February 14, 2007* -
## Calculus AB

From a height of 10 meters in the third floor of an apparent that building, the angle of depression of two cars moving on the same lane and in the same lane and in the same direction measure 29.5 degrees and 38.2 degrees. How far are the two cars from each

*asked by Michael on July 30, 2016* -
## Math

Jade used mental math to multiply 7(52) . She used the following steps: First step: 7(50 + 2) Second step: 7(50) + 7(2) What property does this represent? A Associative Property B Additive Inverse Property C Commutative Property D Distributive Property***

*asked by ILTHSM_ on November 9, 2018* -
## Chid Care

Your bugjet allows you to purchase only one math software packages for your children ages 5-8. Which one of the following packages would probaly be best for this age group? A.ages 4-7 B.ages 6-9 C. ages 7-9 D. ages 6 and up. I chose the letter B and that

*asked by Cynthia on February 5, 2009* -
## pre calc

A math teacher uses four algebra books, two geometry books, and three pre-calculus books for reference. In how many ways can the teacher arrange the books on the shelf if books coiver the same subject matter are kept together?

*asked by Katie on September 25, 2011* -
## math help

could some one please explain to me reciprocal how to find the reciprocal my math home work says find the reciprocal of (-1/8)(13/2)(4) reciprocal you change over so is the -1/8 -8/1 or would it be 8/1 13/2 would be 2/13 4 would be 4/1 then 1/4 then i

*asked by larry on February 2, 2007* -
## math

Good 1 Steve so I sux at math but your here :) Heres another: X = [students playing football], Y = [students playing baseball], and Z = [students playing rugby]. Draw a Venn diagram of Z – (X U Y), and write a sentence describing what the set represents:

*asked by Sha on April 13, 2014* -
## making dot arrays

what are the numbers calleed that we cant use in 2 - row arrays I'm curious to know what class is making dot-arrays? If you can give some kind of answer I'll try google searches to find and answer. It's becoming apparent to me that the term array is being

*asked by kris on August 31, 2006* -
## math

Hi I am looking for a certain number line for a test you guys should have a place in search so we all can show you if you have it then this web site will be poppen well i had a math qestion to it goes like this i had 55 apples and i got 100 more then i

*asked by Anonymous on March 25, 2010* -
## statistics

solve this math statistic problem: an insurance company insures a person's antique coin collection worth $20,000 for an annual premium of $300. If the company figures that the probability of the collection being stolen is 0.002, what will be the company's

*asked by Anonymous on March 24, 2013* -
## language arts

sentence corrections Every one of the students I spoke to said they liked their math class. If a person loses their jacket, they can check the lost and found. Each of the boys likes to go out for ice cream after they win a game. My mom gave my sister and I

*asked by caroline on December 20, 2009* -
## Algebra II

A math book said that the answer to (1 + 1/n) to the nth power was 2.5 when n=1. It seems like the wrong answer to me and that the answer should be 2. Please let me know if I am right or explain if I am wrong.

*asked by Liz on April 17, 2010* -
## Stats

A Math test has a mean of 51 and standard deviation of 5.0. Find the corresponding z scores for: I. a test score of 64 II. a test score of 47

*asked by Jennifer on October 15, 2011* -
## Geometry

If you go to Eden a math tuition you will have the diagram for this question but if you do not there will be ... LET ME JUST GET TO THE QUESTION Question: what is the measure of MQ in the diagram shown?

*asked by Jamie on January 25, 2013* -
## math

Alexandra correctly answered 90% of the questions on a math test. If she missed 4 questions, how many questions were on the test?

*asked by warda on December 11, 2015* -
## Math(College Algebra)

I'm having trouble how to set up this math problem: Rebecca Herst received a year-end bonus of $17,000 from her company and invested the money in an account paying 6.5%. How much additional money should she deposit in an account paying 5% so that the

*asked by Gillian on September 15, 2010* -
## math

can somebody help me with this math problem? I don't understand what i'm supposed to do, so a few links to tutorials or an explanation would be really helpful! "sam recorded how many pounds he gained each month for four months and recorded the results as

*asked by min yoonghy on January 7, 2018* -
## JAVA

How to enhance the Bank Account class by including free checking and saving accounts, withdraw methods and deducting monthly charge using Math.max(actual tranaction count, free tranaction count) in the computation.

*asked by Yassah on February 9, 2011* -
## Math Help

This is a substitution equation. Would that change the steps that you did? Y=3x+1 Y=5x-3 Answer says x=-2 and y=7 Please explain steps. Thanks math help - MathMate, Monday, April 23, 2012 at 10:25pm Y=3x+1 ...(1) Y=5x-3 ...(2) By comparison of (1) and (2),

*asked by TO: Mathmate on April 23, 2012* -
## pre-calculus

h(t)=15t + 1200 is a function that models the motion of a mountain climber. h(t) is his height above sea level at time t in minutes. 1a) the coefficient on t is 15. what does it tell you about the motion of the mountain climber? 1b) what does it tell you

*asked by d on August 27, 2015* -
## Pre-Algebra

The lunch special at Jimmy John’s costs $5.60. The math club has $50.40 in its treasury. How many lunch specials can the club buy? Write and solve an inequality. Show your work. i know that regularly you would just divide 50.40 by 5.60 but to display it

*asked by Woltia on December 14, 2018* -
## MATH PLEASE HELP

Anna mixes the letters S, E, L, E, C, T, E and D thoroughly, without looking, Mary draws one letter. Expressed as a fraction, decimal, and percentage, what is the probability that E will not be the letter mary selects A 3/8 0.375 37.5% B 8/5 1.6 16% C 5/8

*asked by DUD on June 8, 2017* -
## Math

Can someone check my answers for a couple questions in my test I can't get help because my dad isnt here and my mom can't do math. 3.Write the ratio as a percent In the seventh Grade class, 19/25 students voted in favor of having a class picnic. A.76% --

*asked by COW on January 11, 2018* -
## Algebra 1

how do i graph x + y = 1 put y on one side y=-x+1 im doing an online test and its asking me to find the equation that matches the graph. But im not sure how to figure it out. well the graph should have a negative slope with 1 as y-intercept look for a

*asked by Joel on March 20, 2007* -
## Math

You and a friend both take a math examination. You score a 98 out of 100 points and your friend scores 96 out of 100 points. Who scored better? Explain

*asked by klk on September 14, 2010* -
## Math

There a re 30 students in a math class. Twelve belong to the computer club, and eight belong to the photography club. Three belong to both clubs. How many belong to neither?

*asked by MathLuv on May 3, 2011* -
## Math

Jeremy got scores of 93,82,91, and 88 on his first four math test. What score must he get on the fifth test to have an average test grade of 90 for the five test ? Can someone explain step by step. Please

*asked by Jazmin on April 11, 2013* -
## math

my math homework tells me to find the area of a circle using it's circumference. the circumference given was 6π yd. (6 pi yard). can someone explain to me how to find the area?

*asked by kara on September 7, 2011* -
## Science help

Electricity is all about the electrons, never protons. Why not? Thanks for ure help. Electrons are free to move. Protons are much more massive, and are never free. do you know anything about math, bobpursley?

*asked by Ella on November 20, 2006* -
## math

Angela scored in the 90th percentile of her class math test. If 27 students scored the same as or lower than she did, how many students are in the class?

*asked by Katie on December 5, 2013* -
## Math - Help! ASAP

8. a) Estimate 51% of 162. First, we can multiply. So, 162 x 51% = 82.62. We round it, which will be 83. b) Use mental math to calculate 51% of 162. If we round 51%, it is close to 50%. So, in that case, 50% of 162 is 81. Did I do this right? Please help

*asked by Willy on January 18, 2016* -
## math

Suppose that we strike a bargain, and we agree that in this chapter, for every problem you do right, I will pay you $.86 and that for every problem you do wron, I will fine you $.47. After 28 problems, you have a nice sum of $9.45 in your pocket (and I am

*asked by Kelai on February 6, 2007*