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September 17, 2014

September 17, 2014

Post a New Question | Current Questions

**Math - PreCalc (12th Grade)**

The function f(x) = 2x + 1 is defined over the interval [2, 5]. If the interval is divided into n equal parts, what is the value of the function at the right endpoint of the kth rectangle? A) 2+3k/n B) 4+3k/n C) 4+6k/n D) 5+6k/n E) 5+3k/n
*Friday, March 21, 2014 at 9:57am*

**Math - PreCalc (12th Grade)**

Use the inverse matrix to solve this system of equations: 4x+3y=7.5 7x+9z=14 4y-z=8.3 4,3,0 7,0,9 0,4,-1
*Friday, March 21, 2014 at 9:20am*

**Math - PreCalc (12th Grade)**

If Sn = 1 + 6 + 11 + 16 + 21 + 26...... where an = (5n − 4), what would be the mathematical expression represented by Sk + ak + 1? A) (k(5k − 3)/2)+ 5k + 1 B) (k(5k − 3)/2)+ 5k − 4 C) (k(5k − 3)/2)+ 5k + 2 D) (k(5k − 3)/2)+ 5k − 3 E) (...
*Thursday, March 20, 2014 at 1:05pm*

**Math - PreCalc (12th Grade)**

What is the slope of the tangent line passing through the point (2, 3) of the graph of this function? f(x)=x^2+2x−5 A) 1 B) 2 C) 3 D) 4 E) 6 f(2)=2^2+2(2)-5 f(2)=3 so is it c?
*Thursday, March 20, 2014 at 12:58pm*

**Math - PreCalc (12th Grade)**

What value must be defined for f(4) to remove the discontinuity of this function at x=4? f(x)=(x^2−16)/(x−4) A) 0 B) 4 C) -4 D) 8 E) -8 f(4)=(4^2−16)/(4−4) f(4)=0/0 you can't divide by zero. I don't understand the question.
*Thursday, March 20, 2014 at 12:38pm*

**Math - PreCalc (12th Grade)**

If Sn represents the sum of the squares of the first n natural numbers, use proof by induction to find which of the following expressions for Sn is true? A) Sn = n(n − 1)/3 B) Sn = n(2n − 1)/3 C) Sn = n(n + 1)/3 D) Sn = n(n + 1)(2n + 1)/3
*Thursday, March 20, 2014 at 12:23pm*

**A Peculiar Question**

Is either a B+ or an A- considered a terrible grade? If I received a B+ for two essays that I was assigned and then an A- for another, will these grades ultimately cause a decrease in my GPA? I want to enter into either a film or art college, and I want to retain my 4.0 GPA ...
*Wednesday, March 19, 2014 at 9:29pm*

**A Peculiar Question**

If I have been given a B+ for two essays, it is considered a terrible grade? Will it affect my report card?
*Wednesday, March 19, 2014 at 4:20pm*

**Math - PreCalc (12th Grade)**

What is the first natural number that causes the statement 1 + 3 + 5 +... + (2n − 1)<=4n − 1 to fail? A) 2 B) 3 C) 4 D) 5 E) 6
*Wednesday, March 19, 2014 at 12:05pm*

**Math - PreCalc (12th Grade)**

What does this function show at x = 5? f(x)=x^2−25/x−5 A) removable discontinuity B) jump discontinuity C) infinite discontinuity D) continuity E) none of the above
*Wednesday, March 19, 2014 at 12:00pm*

**Math - PreCalc (12th Grade)**

What is the first natural number that causes the statement:(2+3)^n<=4^n+3^n to fail? A) 1 B) 2 C) 3 D) 4 E) 5
*Wednesday, March 19, 2014 at 11:56am*

**Math - PreCalc (12th Grade)**

What is the right-hand limit of this function at x=2? g(x)=x^2−3/x−3 A) -1 B) 0 C) 1 D) 2 E) 3
*Wednesday, March 19, 2014 at 11:54am*

**Math - PreCalc (12th Grade)**

What is the left-hand limit of f(x)=|x−3|/x−3 as x approaches 3? A) 1 B) 2 C) 0 D) -1 E) -2
*Wednesday, March 19, 2014 at 11:14am*

**Term Paper question**

I've started writing a term paper and wondering if there is anyone or any place that I could submit my paper and get feedback before it's graded? It's worth a large portion of my grade & I'd like someone to review it when I'm done.
*Tuesday, March 18, 2014 at 10:52pm*

**4th grade math**

kayla bought a bag of grapefruit. each morning for 5 days she and her father each ate one half of a grapefruit. her mother ate 3 halves total in that time. how much grapefruit did they eat altogether? write your answer as an improper fraction and as a mixed number.
*Tuesday, March 18, 2014 at 5:26pm*

**4th grade math**

In the school walkathon, Bev walked 2 1/5 miles, Dennis walked 3 2/10 miles, and Natalie walked 2 3/5 miles. what was the total distance they walked. write your answer as a whole number and as an improper fraction.
*Tuesday, March 18, 2014 at 5:22pm*

**vocabulary power unit 5 grade 6**

I am trying to find the meaning of this homework: cicle the letter of the word that is a synonym of the boldfaced word. Can you please help me...PLEASE!!!!
*Tuesday, March 18, 2014 at 12:49am*

**math**

The box-and-whisker plots show data for the test scores of four groups of students in the same class. Which plot represents a group with a median grade below 65?
*Monday, March 17, 2014 at 6:41pm*

**Grade 10 English**

Based on the movie, The Red Violin what are 3 ways it differs from most Hollywood blockbusters?
*Monday, March 17, 2014 at 5:56pm*

**4th Grade Math**

Mike drank more than half the juice in his glass. What fraction of the juice could Mike have drunk?
*Monday, March 17, 2014 at 5:07pm*

**Spelling**

What does VCCV and VCV mean in 4th grade words?
*Monday, March 17, 2014 at 4:51pm*

**MS.SUE**

thats my other 2 sisters we go to the same school in the same grade and how do u know our current location
*Monday, March 17, 2014 at 4:03pm*

**MATH 104**

Last semester, a certain professor gave 24 As out of 244 grades. If one of the professor's students from last semester were selected randomly, what is the probability that student received an A? (Assume that each student receives a grade.)
*Saturday, March 15, 2014 at 11:04pm*

**Grade 10 English**

We need to read the story The Stone Carvers I need help with finding important quote s in chapter 1 to 2
*Friday, March 14, 2014 at 12:01pm*

**Math**

Susan designed a circular pool with a diameter of 25 meters. What is the area of the bottom of the pool? Round to the nearest tent. Please help this is due tomorrow and I need to up my grade.
*Monday, March 10, 2014 at 8:01pm*

**6th grade math - statistics**

Can you explain why Q1 = 3.5 and Q3 is 9 out of this dataset 0, 1, 3, 4, 6, 7, 7, 7, 8, 10, 12, 12. My answers were: Assuming median would be 7 (using numbers in positions 6 and 7 where 7+7/2 = 7) Q1 dataset would be 0,1,3,4,6; Q1 = 3 Q2 dataset would be 7,8,10,12,12; Q3= 10 ...
*Monday, March 10, 2014 at 5:17pm*

**math**

100 eighth grade students were interviewed about their favorite subject at school. 45 said Math, 70 said English, and 5 said neither. Using a Venn diagram, how many said both?
*Monday, March 10, 2014 at 4:01pm*

**Asking For Your Opinion:**

Would French 1 be a good course to take in 9th grade?
*Friday, March 7, 2014 at 10:55am*

**4th grade math**

Need help with this problem. Suppose you arrange 48 counters into groups. The first group has 3 counters. Each group after that has 2 more counters than the group before. How many groups do you need to make to use all 48 counters?
*Friday, March 7, 2014 at 2:47am*

**6th grade science**

A couple has just learned that their daughter has hemophilia. They already have a son who does not have the disease. What are the genotypes of the couple? I don't know how to do this please help!
*Wednesday, March 5, 2014 at 12:09pm*

**4th grade math**

Billy shaded 6/8 of a circle. mary shaded 15/16 of congruent circle. who shaded more. how do you know
*Tuesday, March 4, 2014 at 5:39pm*

**6th grade math**

Mark is alternating sqaure tiles with lengths of 4in and 2 in. along the edge of a 6 foot long wall. If he starts with a 4 in tile and ends with a 2 in tile, how many tiles will he use in all? Draw a diagram to solve.
*Monday, March 3, 2014 at 2:07pm*

**English Grade 11**

Explain how the meaning of each of the following words is related to the root work -litera- mean "letter." 1. literate (adj.) 2. literature
*Wednesday, February 26, 2014 at 12:02pm*

**math**

50 students took a test. 24 recieved a better than average grade. What percent scored above the average?
*Tuesday, February 25, 2014 at 8:53pm*

**physics**

A 1.761 km car is moving down a road with a slope (grade) of 12% at a constant direction and magnitude of the frictional force? Please show step by step if possible, I am extremely lost! Thanks!
*Tuesday, February 25, 2014 at 8:05pm*

**4 grade math**

What is the sum of4/10 and 40/100
*Monday, February 24, 2014 at 10:03pm*

**7th grade**

MS SUE- WHY DO YOU HELP STUDENTS CHEAT ON THEIR TESTS. THEY ARE POSTING ACTUAL QUESTIONS HERE
*Monday, February 24, 2014 at 7:52pm*

**English Grade 11**

What is the literary term for an event that is different from what the readers or the characters will expect to happen? A. situational irony B. ambiguity C. verbal irony D. contradiction Working on my workbook pages for this week and I don't understand this one: please ...
*Monday, February 24, 2014 at 5:09pm*

**6th grade social studies**

I need help unscrambling these letters to form two words: inenidj tcain They go along with the phrase ______ _____and Persia.
*Monday, February 24, 2014 at 7:15am*

**8th grade science **

How many (total) of each atom are there in the reactants and the products of cellular respiration? PLEASE HELP ME
*Sunday, February 23, 2014 at 3:58pm*

**math**

The grade of a road is 6%. What is its angle of elevation?
*Thursday, February 20, 2014 at 1:15pm*

**Math 3rd grade**

Which can not be a length measured ti the nearest 1/4 inch.
*Wednesday, February 19, 2014 at 11:58pm*

**shurley english**

third grade, direct object, pattern 2
*Tuesday, February 18, 2014 at 8:12pm*

**Reading & Math**

My daughter is in the third grade and she is reading on a level of 20 she should be at level 34. Please help they are threating to retain her and I don't want that. I need suggestions, desperate mom.
*Tuesday, February 18, 2014 at 5:42pm*

**math**

I'm in 4th grade this is my problem samantha has 14 yards of ribbon.she wraps 12 presents and uses 5/6 yard of ribbon to decorate each present.the total amount of ribbon she used is modeled in the diagram below
*Tuesday, February 18, 2014 at 2:59pm*

**Math **

Mr.Fox's fourth grade class of 20 students had an average of 72% on their last test. However, Rose's mark of 76% had been incorrectly recorded as 56 %. What was the correct class average for the test? A) 82% B) 80% C)73% D) 62%
*Sunday, February 16, 2014 at 1:03pm*

**8th grade science**

Explain how the sun's temperature will change over time as it ages.
*Saturday, February 15, 2014 at 3:17pm*

**Science 8th Grade**

What was the hiker's average velocity? Distance = 6km West Starting Time = 9:45 Ending Time = 10:45 A. 4.0 km/h south B. 0.10 km/h north C. 10 km/h south west D. 6 km/h west
*Friday, February 14, 2014 at 11:08am*

**Math**

ted needs an average of at least 70 on his 3 history tests. he has already scored 85 and 60 on 2 of them. what is the minimum grade ted need on his 3rd test?
*Thursday, February 13, 2014 at 7:56pm*

**Math**

Is anyone in 8th grade connections academy and on unit 1 lesson 10 test
*Thursday, February 13, 2014 at 7:03am*

**Grade 8 math**

What is the greatest possible product of any two numbers in this list? Explain your answer. -3,-7,-15,6
*Tuesday, February 11, 2014 at 5:21pm*

**4th grade math**

write a multiplication sentence with the greatest possible product using the digits 1, 2, 6, and 8 once. then write sentence with the least possible product
*Tuesday, February 11, 2014 at 5:04pm*

**4th grade math**

mary's class collected cans for recycling. they put 2 dozen can in each sack. they had 104 sacks at the end of the year. how many cans did they collect
*Tuesday, February 11, 2014 at 5:02pm*

**4th grade math**

A serving of juice is 250mL. how many servings are in a dozen liters of juice.
*Tuesday, February 11, 2014 at 4:59pm*

**4th grade math**

Grace also bought 2 lengths of ribbon to trim a picture frame. one length was 18 inches. the sum of both lengths was 4 feet. what ws the length of the second piece of the ribbon
*Tuesday, February 11, 2014 at 2:47pm*

**4th grade math**

Grace wants to put a wallpaper border around the top of the room. Each roll of the wallpaper border is 120 inches long. how many roll will she need.
*Tuesday, February 11, 2014 at 2:47pm*

**4th grade math**

A serving of juice is 250 mL. How many servings are in a dozen liters of juice?
*Monday, February 10, 2014 at 9:19pm*

**4th grade math**

A granola bar weighs 30 g. 100 granola bars are in a shipping carton. how many kilograms do a dozen shipping cartons weigh?
*Monday, February 10, 2014 at 9:14pm*

**4th grade math**

A serving of chicken noodle soup is 120 milliliters. how many liters of soup will the cafeteria need to serve 350 students
*Monday, February 10, 2014 at 7:42pm*

**4th grade math**

A box of hot cocoa packets has 30 grams of hot cocoa mix. how many boxes of mix can be made from 6 kilograms of hot cocoa mix
*Monday, February 10, 2014 at 7:40pm*

**10th grade Science**

Explain how a drug sits on acetylcholine receptors will affect muscle function? Is it because the drug would act as a blocking agent to prevent the receptors from gathering information on what to do?
*Saturday, February 8, 2014 at 1:27pm*

**statistics**

how do the 4th grade girls weight in principal ben's school compare to the national mean weigh = 90 sd=15
*Thursday, February 6, 2014 at 9:58pm*

**grade 12 calculus and vectors**

Determine the average rate of change form x = 1 to x = 4 for each function. a) y= x b) y=x^2 c) y=x^3 d) y=7
*Thursday, February 6, 2014 at 5:07pm*

**9th grade algebra**

suppose the population of deer in a state is 10,280 and is growing 1% each year. predict the population after 5 years.
*Thursday, February 6, 2014 at 11:47am*

**ART please help me i just need to be sure about'em**

this type of ad implies the product will make you beautiful. slogan testimonial icon rich-and-famous i think its testimonial but i want to be sure. this happens as symbolic, traditional dress in africa is replaced with western styles of clothing. the dress becomes more popular...
*Tuesday, February 4, 2014 at 4:02pm*

**ART please help me i just need to be sure about'em**

this type of ad implies the product will make you beautiful. slogan testimonial icon rich-and-famous i think its testimonial but i want to be sure. this happens as symbolic, traditional dress in africa is replaced with western styles of clothing. the dress becomes more popular...
*Tuesday, February 4, 2014 at 3:59pm*

**Math 3rd grade**

2-Eric and Frank want to equally share 4/3 feet of rope. what length of rope should each friend get? Explain how to use a drawing to help solve the problem.
*Monday, February 3, 2014 at 6:02pm*

**math 6th grade**

the bridge span is 360 meters long. the bridge is 30 meters shorter than the main span. write and solve an equation to the the length of the main span
*Monday, February 3, 2014 at 3:04pm*

**2nd grade math**

Mr foster places 11 garden lights along an 80 meter path. Each light is placed an equal distance apart. How far away is the sixth garden light from the second?
*Sunday, February 2, 2014 at 8:32pm*

**6th grade honor science**

having trouble with this question it was fill in the blank it was In a food web, an organism that eats an animal is a blank consumer
*Thursday, January 30, 2014 at 8:54pm*

**Fractions**

Sam has 9 yellow pencils in his desk. 3/4 of his pencils are yellow. How many pencils does Sam have in his desk? 3rd grade fraction, slightly confusing to me
*Sunday, January 26, 2014 at 12:04pm*

**Science - 6th grade: CHECK MY ASNWER**

If changing conditions lead to decreased oxygen levels in the stream, the carrying capacity of the stream for the trout will decrease. Oxygen level in water is therefore a(n) _____________ with respect to the number of trout that a particular stream can support. Is it "...
*Saturday, January 25, 2014 at 8:32pm*

**8th Grade History**

In which region do rivers flow into a basin but evaporate before they make it to a larger body of water? A.the Coastal Plains B.the Great Plains C.the Great Basin D. the Everglades Thank ya!!! <3
*Saturday, January 25, 2014 at 4:58pm*

**10th grade Science**

Explain, physiologically, how you would decide to use ice or heat on an injury? My book doesn't have any good info on this question. Is there a reputable website or article to get info to answer this question?
*Friday, January 24, 2014 at 7:27pm*

**8th grade math**

What is the volume of a crate with the dimensions of 4ft by 3ft by 2ft?
*Thursday, January 23, 2014 at 11:08pm*

**4th grade math**

there were 18 kids at the play.each kid had 4 dolls.how many dolls are there in all?
*Thursday, January 23, 2014 at 7:52pm*

**3rd Grade**

Casey has 10 olives to eat. She wants to have the same number of olives at lunch and at dinner. She wonders how many olives she should eat at each meal. Which number sentence fits this problem?
*Thursday, January 23, 2014 at 7:37pm*

**4th grade social studies**

why did the king of spain give florida land away to foreigners? I can't find any thing on the internet?
*Wednesday, January 22, 2014 at 8:46pm*

**1st grade english**

where you say a small mug in a sentence do you say small or little
*Wednesday, January 22, 2014 at 3:17pm*

**Math**

A real estate agent earns a weekly salary of $200. This week, he sells one home for $120,00 and is paid a commission rate of 5%. Find his total earnings for this week. (7th grade math)
*Tuesday, January 21, 2014 at 4:01pm*

**physics**

in a game a toy car slides down a slop if the top of the slope is 2 m higher than the foot of the slope how fast will the car be moving when it reaches the foot assume that all of its g.p.e is transformed to k.e (i'm 8th grade so simple answers pleas)
*Saturday, January 18, 2014 at 2:10am*

**Math Project Gr 5/6**

Hi im from BC and im doing a mini project on topic grade 5 and 6 math curriculum topics, please give me any links to sites where i can find information on thank you, and i dont exactly know what kind of info to add, so need help with that. like what should my list of important...
*Tuesday, January 14, 2014 at 10:08pm*

**Math #rd grade**

Bryan has 3 nickels, 3 dimes, and 2 quarters. What fraction of the coins is either a dime or a quarter? There is a space for only 1 fraction answer.
*Tuesday, January 14, 2014 at 7:48pm*

**8th Grade Earth Science Help?**

Which of the following terms refers to the time it takes for one-half of the radioactive atoms in a sample of a radioactive element to decay? - relative age - absolute age - potassium-argon data - half-life** Is my answer correct?
*Tuesday, January 14, 2014 at 7:05pm*

**Biology**

I'm in 4th grade to i need to write a hypothesis on "why do some people have similar dominant traits? i don't know how to write that either?
*Sunday, January 12, 2014 at 8:37pm*

**Science**

What would be a good hypothesis on a dominant trait? I'm 4th grade and this is my first project but I am confused cause I do not know how to write one thank you
*Sunday, January 12, 2014 at 8:17pm*

**8th Grade Algebra**

Taylor's front porch is rectangular. The length is 3 feet more than the width. The perimeter of the porch is 14 feet. What is the width of the porch?
*Saturday, January 11, 2014 at 6:40pm*

**Fifth grade math**

If a wom and a sail race who will it be
*Saturday, January 11, 2014 at 4:39pm*

**Statistic**

Consider a football team for whom the numbers on the active players’ jerseys are 29, 41, 50, 58, 79,…, 10 (listed in alphabetical order of the players’ names). Does it make sense to calculate the mean of those numbers? Why or why not? 2. The Fair Isaac ...
*Saturday, January 11, 2014 at 2:24pm*

**4th grade math**

When the sale ended, there were 10 hardcover books, 26 paperback books and 6 CDs that didn't sell. The students decided to donate them to 3 area children hospital. If the items were divided equally, how many books and CDs will each hospital receive?
*Thursday, January 9, 2014 at 7:09pm*

**4th grade math**

Marcia collected a number of used DVDs for teh sale. There were 12 action movies, 7 comedies, and 8 animated films. she decided to put them on sale at 3 for $5. how many groups of 3 DVDs went on sale? How much money did they bring in?
*Thursday, January 9, 2014 at 7:07pm*

**4th grade math**

there were 106 paperbacks books on sale. Benita came up with a good way to sell them. she placed 10 books each in bags and sold each bag for $2. How many bags of books did she make and how many books were left over?
*Thursday, January 9, 2014 at 7:05pm*

**4th grade math**

Bobby read 20 pages of a book one week. he read 3 times as many pages the following week. how many pages did be read in the 2 weeks
*Thursday, January 9, 2014 at 7:03pm*

**7th grade acc math prevents**

How do I show on a hundred grid what 18% of 520 is? I know what the answer is but don't know how the grid can help me find the answer and that is what the teacher wants us to show. Thanks in advance!
*Monday, January 6, 2014 at 11:10pm*

**Grade 12 Chemistry**

Caprytic acid, also called octanoic acid, is an 8-carbon fatty acid that is used as a sanitizer on dairy equipment that comes in contact with milk.The acid has a molar mass of 144.21 g/mol. An aqueous solution of the sanitizer containing 12.25 g/L has a pH of 2.98. What is the...
*Sunday, January 5, 2014 at 6:53pm*

**Grade 12 Chemistry**

This is my question: AspirinTM (acetylsalicylic acid) is a monoprotic acid with molar mass of 180g/mol. An aqueous solution containing 3.3 g/L has a pH of 2.62. What percentage of acetylsalicylic acid molecules ionizes in the solution?
*Sunday, January 5, 2014 at 12:40pm*

**Statistics**

Can someone please help with this problem to advise how to set up and in the book Essential of Statistics for the Behavioral Sciences. A researcher is investigating the effectiveness of a new study-skills training program for elementary school children. A sample of n=25 third-...
*Friday, December 20, 2013 at 10:36pm*

**Math grade 9**

Find the distance from the point (5, 6) to the line x + y = 3 I don't get the x+y=3 mean
*Friday, December 20, 2013 at 8:02pm*

**Algebra 2 9th/11th grade math**

Expand each binomial. (L-2t)^2
*Thursday, December 19, 2013 at 8:35pm*

**4th grade math**

it takes jupiter 12 years to orbit the sun. how many days does it take jupiter to orbit the sun?. add 3 days for leap years
*Thursday, December 19, 2013 at 7:07pm*

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