Sunday

April 26, 2015

April 26, 2015

**statistics**

2. The grades on a statistics midterm exam were normally distributed with a mean of 72 and a standard deviation of 8. a. What is the proportion of students received a B grade. b. What is the proportion of students that failed the exam? c. What is the grade of the 92nd ...
*Thursday, February 16, 2012 at 6:49am*

**emergency physics**

The 2nd harmonic of a string of length 40cm and linear mass density 1.11g.m has the same frequency as the 5th resonance mode of a closed pipe of length 1.4m. Find the tension in the string. use 340 for speed of sound
*Wednesday, February 15, 2012 at 9:07pm*

**Maths**

Dots are arranged to form pattern as show below: pattern 1 they are 2 pattern 2 they are 5 pattern 3 (a) how many dots are in the 4th, 5th, 11th, 200th patterns?
*Friday, February 10, 2012 at 4:50am*

**7th grade science**

What are mass extinctions?
*Sunday, January 29, 2012 at 6:08pm*

**Math**

Please help me with the following problem, I have submitted the answer: 88.2 and was told that it was incorrect. The word problem reads: If you do not consider air resistance, gravity causes a falling object to descend a distance of (9.8)t2 where t is the time in seconds. If a...
*Wednesday, January 25, 2012 at 11:02pm*

**math**

Please help me with the following problem, I have veiwed the answers to the other problems like this one and were told they were incorrect: If you do not consider air resistance, gravity causes a falling object to descend a distance of (9.8)t2 where t is the time in seconds. ...
*Wednesday, January 25, 2012 at 6:19pm*

**MATH**

I have no idea on how to get started. If you do not consider air resistance, gravity causes a falling object to descend a distance of (9.8)t2 where t is the time in seconds. If a 16 pound bowling ball is dropped from the tallest building in the world, how many meters does it ...
*Monday, January 23, 2012 at 10:32pm*

**MATH**

If you do not consider air resistance, gravity causes a falling object to descend a distance of (9.8)t2 where t is the time in seconds. If a 16 pound bowling ball is dropped from the tallest building in the world, how many meters does it fall during the 4th and 5th seconds ...
*Monday, January 23, 2012 at 7:42pm*

**6th grade math**

how to solve w/3=17
*Sunday, January 22, 2012 at 9:30pm*

**Math 5th**

4/7 of a group of children are boys. If there are 18 more boys than girls, how many children are there altogether?
*Friday, January 20, 2012 at 8:54pm*

**Math**

on the day Rachel was born, her grandparents deposited $ 500 into a savings account that earns 4.8%/a compounded monthly . They deposited the same amount on her 5th, 15th, and 10th birthdays. determine the balance in the account on Rachel's 18th birthday
*Wednesday, January 18, 2012 at 4:04pm*

**6th grade math**

1/4 * 1/2 =4D
*Monday, January 16, 2012 at 6:46pm*

** 5 th grade algebra**

5a-a-2a=18
*Saturday, January 14, 2012 at 10:17pm*

**4th grade math**

What are 3/7,1/9,and 2/3 all realated to?
*Thursday, January 12, 2012 at 8:39pm*

**spell**

What is a 12 letter word with the 5th letter being a C, the 7th being a E, and the 11th being a T?
*Wednesday, January 11, 2012 at 10:21pm*

**Question **

I'M CURIOS SO DON'T JUST JUDGE ME AND BE RUDE i'M REALLY CURIOUS AND i FORGOT TO ASKED THIS QUESTION. DO NOT JUDGE ME!!!! Do I start taking SAT's and ACT's in grade 10th or 11th/12th grade???? I'm really curious.
*Friday, December 30, 2011 at 12:29pm*

**Statistics**

2. You are given the following data. Number of Absences Final Grade 0 93 1 90 2 79 3 66 4 60 5 56 - Find the correlation coefficient for the data. - Find the equation for the regression line for the data, and predict the final grade of a student who misses 3.5 days. Show all ...
*Friday, December 30, 2011 at 12:31am*

**9th grade math**

simplify x^5-x^3+x^2-1-(x^3-1)(x+1)^2/(x^2-1)^2
*Wednesday, December 7, 2011 at 12:38pm*

**Math 4th grade**

Input 15 ? 30 10 9 3 1 Output 6 18 3 9 ? 30 90
*Wednesday, December 7, 2011 at 10:53am*

**Statistics**

. You are running an a single variable ANOVA with five levels of the variable, such as comparing IQ on 5th, 6th, 7th, 8th and 9th graders and the F-value is very large. The significance for the F value is equal to .0003. What can you conclude about the overall effect and what...
*Tuesday, December 6, 2011 at 8:43pm*

**Science **

Is there any science fair contests I can partcipate??? I found this topic in gr 5th and I really want to use it for my science fair project this year but we don't have it at my school so I want to use it for a contest.
*Sunday, December 4, 2011 at 8:15pm*

**7h grade math**

Deminsional analysis 4.25L/h to mL/
*Sunday, December 4, 2011 at 6:09pm*

**grade 7 math**

which expression is equivalent to (n+10)x5
*Sunday, December 4, 2011 at 11:06am*

**statistics**

If Q2 = D5 = Median Which means if the 2nd quartile equals to 5th decile and also the median.. then how do we find out the fourth decile? I mean is there a way to find it out through this? Then what is D4 going to be? I am talking about Deciles here..
*Saturday, December 3, 2011 at 10:57pm*

**SAT's and ACT's **

How to pass the SAT's and ACT'S for the John Hopkins Talent Search? Here are the grade chart. Awards Ceremony Eligibility Chart (valid for students who tested by June 30, 2011) SAT Grade 7 Math >=550 or Critical Reading >=550 ACT Grade 7 Math >=21 or Reading &...
*Friday, December 2, 2011 at 7:25pm*

**7th grade math**

please help me solve n-16= -23
*Thursday, December 1, 2011 at 4:55pm*

**math**

Jane is taking a class and asks you to help her figure out what her last grade must be in the class to get a 85 in the class. She tells you the following calculation is used to find your final grade: 75+85+90+X ___________ > 4 x is her last score which has not been taken. ...
*Wednesday, November 30, 2011 at 6:49pm*

**math**

Jane is taking a class and asks you to help her figure out what her last grade must be in the class to get a 85 in the class. She tells you the following calculation is used to find your final grade: 75+85+90+X ----------- > or = to 85 4 x is her last score which has not ...
*Tuesday, November 29, 2011 at 11:20pm*

**algebra**

Jane is taking a class and asks you to help her figure out what her last grade must be in the class to get a 85 in the class. She tells you the following calculation is used to find your final grade: w2d2 x is her last score which has not been taken. Explain this equation and ...
*Tuesday, November 29, 2011 at 9:43pm*

**math**

Jane is taking a class and asks you to help her figure out what her last grade must be in the class to get a 85 in the class. She tells you the following calculation is used to find your final grade: w2d2 x is her last score which has not been taken. Explain this equation and ...
*Tuesday, November 29, 2011 at 8:43pm*

**7TH GRADE MATH**

please help solve -5(9K-8) + 2 (8+6K)
*Monday, November 28, 2011 at 5:23pm*

**Plz Help **

You I'm entering this contest Scholastic Arts and Writing Award, and I'm a bit confused so I have to register online, then fill out a form since I'm doing it and mail my art work and writing in???? I check the site but I'm confused. I'm in 7th grade by the ...
*Sunday, November 27, 2011 at 10:04am*

**2 grade math**

% of 0.66? Answer 66. Am I right
*Thursday, November 24, 2011 at 11:10am*

**MAth grade 8**

x+5/6 = 3x-5/8 Solve for x
*Tuesday, November 22, 2011 at 8:02am*

**MAth grade 8**

how do you convert 2 4/5 to decimals
*Tuesday, November 22, 2011 at 7:37am*

**world history**

I need to put these history dates in Chronological order to fill out a history chart on Buddhism. I am not sure the correct order and don't want to get the whole chart wrong. Please help. 5th century B.C.E. 350 C.E. 500 C.E. 819 C.E. Early 9th century C.E. 845 C.E. What is...
*Sunday, November 20, 2011 at 10:55pm*

**My Award Binder**

I have a award binder to keep all of my award from 1st grade to now and I need ideas to organize it and make it pretty. I don't have any award from 7th grade but my pricipal said that I will have a lot of awards (as I was walking to go to the library during my lunch period...
*Saturday, November 19, 2011 at 7:21pm*

**Another Question **

Is 8th grade is hard?
*Saturday, November 19, 2011 at 10:12am*

**4th grade**

75-3m when m=8. Thanks!
*Friday, November 18, 2011 at 12:07am*

**8th Grade Help **

My sister is gradating grade 8th this year and she wants to create her own 8th grade yearbook using a "marble notebook" she doesn't want to use a scrapbook she need cover ideas memorable quotes and funny ideas background ideas (when putting pictures she needs ...
*Tuesday, November 8, 2011 at 12:03pm*

**6th grade math**

which is bigger? 17/19 0r 0.85
*Monday, November 7, 2011 at 7:45pm*

**6th grade math**

Which comparison is correct? A. < 0.05 = 50% B. 0.7 = < 10% C. < 25% < 0.9 D. 0.3 < 36% =
*Sunday, November 6, 2011 at 12:07am*

**7th grade math**

8/9 \1/4
*Saturday, November 5, 2011 at 7:53pm*

**8th grade math in pre-algebra**

6(2x+3)=42
*Friday, November 4, 2011 at 10:06pm*

**MATH 7th GRADE**

7ã3 / ã 5
*Saturday, October 29, 2011 at 9:21pm*

**Fourth grade math**

What's range mean?
*Thursday, October 27, 2011 at 6:17am*

**MAth grade 8**

y^2-4y+4/2-6y x 2y+4/3y^2-12
*Wednesday, October 26, 2011 at 10:04am*

**Maths Grade 8**

m^2-m-6 m^2 _________ x ______ m^2-9 m^2+2m
*Wednesday, October 26, 2011 at 9:44am*

**4 grade math**

complete the following problem 4+8+7/3*72
*Monday, October 24, 2011 at 5:33pm*

**PLZ HELP....STATS**

You are given the following data. # of Absences Final Grade 0 96 1 92 2 71 3 66 4 60 5 51 A. Find the correlation coefficient for the data. B. Find the equation for the regression line for the data, and predict the final grade of a student who misses 3.5 days.
*Sunday, October 23, 2011 at 11:52pm*

**Stats**

You are given the following data. # of Absences Final Grade 0 96 1 92 2 71 3 66 4 60 5 51 A. Find the correlation coefficient for the data. B. Find the equation for the regression line for the data, and predict the final grade of a student who misses 3.5 days.
*Sunday, October 23, 2011 at 1:04pm*

**Math**

You are given the following data. # of Absences Final Grade 0 96 1 92 2 71 3 66 4 60 5 51 A. Find the correlation coefficient for the data. B. Find the equation for the regression line for the data, and predict the final grade of a student who misses 3.5 days.
*Friday, October 21, 2011 at 3:03pm*

**math**

the chess club has 55 members 22 of them are in 6th grade what percent of the club is not in 6th grade
*Wednesday, October 12, 2011 at 8:08pm*

**statistics**

mean wage of 5 employee is Rs.1000 of the wages of 4 emoloyee are Rs 800 rs 1200 rs 1300 rs 900.find the wages of 5th employee?
*Wednesday, October 12, 2011 at 12:52pm*

**math**

Studies have shown a particular television commercial is understood by 25% of first grade students and 80% of fourth grade students. If a television advertising agency randomly selects one first grader and one fourth grader, what is the probability neither child would ...
*Tuesday, October 11, 2011 at 12:05am*

**social psy**

) Researcher wants to look at the correlation between class attendance and grade in class (higher numbers indicating a higher grade). The researcher found the following result r = .82. The correlation coefficient tells researchers two pieces of information, the strength of the...
*Monday, October 3, 2011 at 2:23pm*

**math 11 grade**

How do you do this 5a+(9)-12e*5a+(3)
*Monday, September 26, 2011 at 9:10pm*

**6th grade math**

3/4x-2/3x=2/5
*Wednesday, September 21, 2011 at 4:44pm*

**6th grade math**

but why is 2.0 bigger than 0.15?
*Thursday, September 15, 2011 at 4:15pm*

**7th grade math**

what is a supplementary angle?
*Wednesday, September 14, 2011 at 10:17pm*

**math**

Polk Elementary School has three classes for each grade level,kindergarten through fifth grade.If there is an average of 27 students per classroom,about how many students attend Polk Elementary School?
*Wednesday, September 14, 2011 at 2:55pm*

**third grade math**

Does (4+5) + 2 = 9+2? Explain
*Monday, September 12, 2011 at 7:29pm*

**6th grade**

interview some from 9/11
*Sunday, September 11, 2011 at 3:57pm*

**6th grade**

describe yourself mathamatically
*Sunday, September 11, 2011 at 3:55pm*

**6th grade math**

60x60x24x365x186000=???
*Thursday, September 8, 2011 at 9:21am*

**6th grade math**

2 2/3 \ 1 5/6
*Thursday, August 18, 2011 at 7:31pm*

**Math grade 12 **

make F(x)=3/x-11 vertical asymptote
*Saturday, August 13, 2011 at 9:59am*

**maths**

A vampire enters a town and bites 2 person every night. The bitten 2 persons grows in to two big vampires and bites 4 persons the next night. These 4 vampires bites 6 people the next night and the 6 bites 8 and so on.......how many vampires will be there on the 5th night?
*Monday, August 8, 2011 at 5:45am*

**math**

on his first exam, he studied for 10 hours and went to tell the mall for 4hours, and got a score of 85. how long should he study to get a grade of 96 and go to the mall for 17 hours? grade varies directly with studying and inversely with going to the mall. is the answer 48hrs?
*Tuesday, August 2, 2011 at 12:30pm*

**Math**

Mr. Doodle’s grade distribution over the past 3 years for a course in college algebra is shown in the chart below. Grade Number A 45 B 180 C 110 D 95 F 65 I 5 If Jane plans to take a college algebra course with Mr. Doodle, determine the empirical probability that she ...
*Wednesday, July 20, 2011 at 10:08am*

**Math**

Mr. Doodle’s grade distribution over the past 3 years for a course in college algebra is shown in the chart below. Grade Number A 45 B 180 C 110 D 95 F 65 I 5 If Jane plans to take a college algebra course with Mr. Doodle, determine the empirical probability that she ...
*Tuesday, July 19, 2011 at 5:30pm*

**Math-Please help :(**

(a) translate the argument into symbolic form and (b) determine if the argument is valid or invalid. You may compare the argument to a standard form or use a truth table. If Nicholas Thompson teaches this course, then I will get a passing grade. I did not get a passing grade...
*Thursday, July 14, 2011 at 10:42pm*

**stats**

Can someone please help me, I have been working on this for 2 hours now and I keep getting a negative answer. You are given the following data. Number of Absences Final Grade 0 99 1 94 2 79 3 73 4 68 5 53 - Find the correlation coefficient for the data. - Find the equation for...
*Thursday, July 14, 2011 at 9:21pm*

**Math**

(a) translate the argument into symbolic form and (b) determine if the argument is valid or invalid. You may compare the argument to a standard form or use a truth table. If Nicholas Thompson teaches this course, then I will get a passing grade. I did not get a passing grade...
*Thursday, July 14, 2011 at 6:13pm*

**Math**

(a) translate the argument into symbolic form and (b) determine if the argument is valid or invalid. You may compare the argument to a standard form or use a truth table. If Nicholas Thompson teaches this course, then I will get a passing grade. I did not get a passing grade...
*Thursday, July 14, 2011 at 4:48pm*

**Math**

(a) translate the argument into symbolic form and (b) determine if the argument is valid or invalid. You may compare the argument to a standard form or use a truth table. If Nicholas Thompson teaches this course, then I will get a passing grade. I did not get a passing grade...
*Wednesday, July 13, 2011 at 8:06pm*

**Math-geometry**

(a) translate the argument into symbolic form and (b) determine if the argument is valid or invalid. You may compare the argument to a standard form or use a truth table. If Nicholas Thompson teaches this course, then I will get a passing grade. I did not get a passing grade...
*Wednesday, July 13, 2011 at 6:39pm*

**Math-geometry**

(a) translate the argument into symbolic form and (b) determine if the argument is valid or invalid. You may compare the argument to a standard form or use a truth table. If Nicholas Thompson teaches this course, then I will get a passing grade. I did not get a passing grade...
*Tuesday, July 12, 2011 at 12:00am*

**Math**

The table below shows the number of molecules in experiment B. Time(h) : 1st , 2nd , 3rd , 4th , 5th No. of molecules : 3 , 8 , 15 , 24, 35 (i) how many molecules will there be in nth hour? (ii) from which hour onwards would the no. of molecules be in experiment B?
*Saturday, June 18, 2011 at 1:23am*

**math**

a number story for grade 4?
*Wednesday, June 8, 2011 at 3:19am*

**math grade 5**

My sister in grade 5 needs help but i dunt exactly know how to do the answers myself, so if someone can help me out i can explain to her better. Thanks 3. You are using a tree diagram with 12 branches to show the possible outcome of a probability experiment What might the ...
*Monday, June 6, 2011 at 8:55pm*

**3rd grade math**

Explain how to compare 0.34 and 0.27?
*Monday, June 6, 2011 at 8:38pm*

**MAT/116**

I was just wandering if this was correct? 1. Your company is planning to spend no less than $80,000 and no more than $100,000 on a landscaping project, which will be used as a promotional park that promotes your toaster manufacturing company. Write an inequality with a ...
*Monday, May 30, 2011 at 12:26am*

**MAT/116**

I was just wandering if this was correct? 1. Your company is planning to spend no less than $80,000 and no more than $100,000 on a landscaping project, which will be used as a promotional park that promotes your toaster manufacturing company. Write an inequality with a ...
*Sunday, May 29, 2011 at 11:55pm*

**math**

Mr. Doodle’s grade distribution over the past 3 years for a course in college algebra is shown in the chart below. Grade Number A 45 B 180 C 210 D 95 F 65 I 5 If Jane plans to take a college algebra course with Mr. Doodle, determine the empirical probability that she ...
*Sunday, May 29, 2011 at 7:57pm*

**school in general**

Hi i have a question im currently in 7th grade but i was held back a year in first do you think there would be any possible way to advance to 8th grade just curios I believe I have a wide enough knowledge span to pull it off but im just questioning the wheter or not it would ...
*Friday, May 27, 2011 at 6:48pm*

**AP Physics**

A Young's double slit has a slit separation of 2.50x10 raised to the -5th power m on which a monochromatic light beam is directed. The resultant bright fringes on a screen 1.00 m from the double slit are separated by 2.30x10 raised to the -2nd power m. What is the ...
*Sunday, May 22, 2011 at 5:45pm*

**6th Grade Math**

76 is what percent of 15??????????????????
*Sunday, May 22, 2011 at 10:20am*

**criminal justice**

Prepare a 6–8 slide PowerPoint presentation that addresses the following questions: •What are some of the ways that organized crime impacts you and a community and/or city (of your choice) directly? (This element will account for 20% of your grade.) •What are ...
*Wednesday, May 18, 2011 at 1:03am*

**Maths 7th grade**

How do you factorise?
*Tuesday, May 17, 2011 at 1:05pm*

**physics**

If 7.00hp are required to drive a 1500-kg automobile at 66.0 km/h on a level road. What power is necessary to drive the car at 66.0 km/h down a 1.00 % grade? It requires 42.9 hp to drive the car at 66.0 km/h up a 10.0 % grade (a hill rising 10.0 m vertically in 100.0 m ...
*Thursday, May 5, 2011 at 3:22am*

**Physics**

If 7.00hp are required to drive a 1500-kg automobile at 66.0 km/h on a level road. What power is necessary to drive the car at 66.0 km/h down a 1.00 % grade? It requires 42.9 hp to drive the car at 66.0 km/h up a 10.0 % grade (a hill rising 10.0 m vertically in 100.0 m ...
*Wednesday, May 4, 2011 at 3:38am*

**8th grade math**

2x-5y=14 3x+2y=40 what is the solve of xy ?
*Tuesday, May 3, 2011 at 11:23pm*

**8th grade math**

2x-5y=14 3x+2y=40 what is the solve of xy ?
*Tuesday, May 3, 2011 at 11:23pm*

**8th grade math**

3.5 X 10 ________ 7 x 10^-9
*Sunday, May 1, 2011 at 11:57pm*

**math **

find the greatest common factor and simplify your answer. 4v to the 7th power y to the 9th power and 16v to the 6th power x to the 8th power y to the 5th power.
*Thursday, April 28, 2011 at 5:45pm*

**math**

simplify, 4v to the 7th power y to the 9th power and 16v to the 6th power x to the 8th power y to the 5th power.
*Thursday, April 28, 2011 at 5:34pm*

**math**

4v to the 7th power y to the 9th power and 16v to the 6th power x to the 8th power y to the 5th power
*Thursday, April 28, 2011 at 5:02pm*

**math**

There are 283 students in Walley's school and 59 of them are in the sixth grade. What is the approximate percent of student at Walley's school who are in the sixth grade
*Wednesday, April 20, 2011 at 9:23pm*

**math**

An average score of 90 or above in a history class receives an A grade. You have scores of 90, 89, and 85 on three exams. Find the range of scores on the fourth exam that will give you an A grade for the course. (Let N stand for your score on the fourth exam.)
*Wednesday, April 20, 2011 at 9:22pm*