Monday

July 28, 2014

July 28, 2014

Post a New Question | Current Questions

**Calculus Grade 12**

Without solving , determine the points of intersection of the line r= (5,-9,3) +k (1,-12,2] and the plane [x,y,z]= (4,-15,-8) + s[1,-3,1] + t[2,3,1], if any exist.
*Monday, June 10, 2013 at 5:18pm*

**Calculus grade 12 lines and planes**

Find the value of k so that the line [x,y,z] = [2,-2,0]+ t[2,k,-3] is parallel to the plane kx +2y - 4z= 12
*Monday, June 10, 2013 at 5:12pm*

**Calculus Grade 12**

Determine the value of k such that the points (4,-2,6), B(0,1,0) and C(1,0,-5) and D (1,k,-2) lie on the same plane.
*Monday, June 10, 2013 at 3:36pm*

**Calculus Grade 12**

Find the equation of the plane that passes through the point (3,7,-1) and is perpendicular to the line of intersection of the planes x-y-2z+3=0 and 3x-2y+z+5=0
*Monday, June 10, 2013 at 3:32pm*

**Math**

Nicole drew a circle on the chalkboard that had a radius of 15 cm. Which is closest to the circumference in centimeters of the circle she drew on the board? A.30cm B.45cm C.24cm D.90cm D Which statement is not supported by the information in the graph? 6th graders 188 boys 192...
*Tuesday, June 4, 2013 at 6:21pm*

**9th grade math**

Solve -4(x-3)>2x A. x>6 B. x<2 C. x>3/2 D. x<-1/2
*Tuesday, June 4, 2013 at 2:48pm*

**English 8R - HW CHECK (PLZZZ READ!)**

Please read my essay to see if it's good. PLEASE LET ME KNOW IF THERE ANY OTHER DETAILS I COULD ADD! I REALLY want to get a good grade for assignment and this is my FINAL GRADE! Should the story of Anne Frank and the Holocaust be taught in Middle School? The story of Anne ...
*Thursday, May 30, 2013 at 8:22pm*

**Math - 8th Grade**

Please help: The distance from home plate to second base on a softball diamond is 84.853 feet. This is the same as the distance from first base to third base. What is the area of a softball diamond? Round your answer to the nearest square foot. 1,800 ft.2 3,558 ft.2 7,200 ft.2...
*Wednesday, May 29, 2013 at 9:22pm*

**Maths**

Mariolys is creating a numbered list of distinct integers. Luigis sees that there are N numbers in the list, and states that he can find either a subsequence of length 13 with increasing terms or a subsequence of length 17 with decreasing terms. What is the minimum value of N ...
*Wednesday, May 29, 2013 at 4:30am*

**5th grade math**

what is the common denominator to 3/5, 1/3, and 1/6
*Tuesday, May 28, 2013 at 4:48pm*

**7th grade Science**

1. The atmosphere of Earth is an example of a ______solution.(1point) liquid-liquid gas-liquid gas-gas** solid-liquid Am I correct?
*Monday, May 27, 2013 at 10:31pm*

**Grade 11 english**

I have to compsre revenge in Wuthering Heights by Emily bronte and the contemporary issue of politics. I am doing a powerpoint presentation and it should be 5 minutes long. So what do you suggest my slides be and howmany. Please help me I really don't know how to compare ...
*Saturday, May 25, 2013 at 8:09pm*

**6th grade science**

The erosive energy of rivers alters landscapes over periods of millions of years. Which of the following increases a river's rate of erosion? A)low gradient B)high discharge C)small load D)decreased speed
*Wednesday, May 22, 2013 at 11:24pm*

**Pre-calculus**

As you drive down a mountain, you see a sign that says there is a 6 degree grade over the next 5 miles. What is the change in elevation over that 5 mile stretch?
*Wednesday, May 22, 2013 at 8:41pm*

**Math 7th Grade**

A bag contains 5 red,2 blue,and 4 white marbles. What is the probabiltiy If Sam picked a red marble replaced it and picked a white marble?
*Wednesday, May 22, 2013 at 5:23pm*

**life orientation grade 12**

in 10-15 lines critically discuss 5 ways in which global warming impacts on the community
*Tuesday, May 21, 2013 at 8:19pm*

**4 grade math**

Find two mixed numbers so that the sum is 15 3/10 and the difference is 8 5/10
*Tuesday, May 21, 2013 at 8:11pm*

**7th grade math (help!)**

Hey! 2y-8y=-4 Do I subtract or do I add?!? Something like that right?!?
*Tuesday, May 21, 2013 at 7:22pm*

**Grade 12 LIFE ORIENTATION**

Discribe the lifestyle disease/behaviour.Mention 5 factors that contribute to the disease/behaviour
*Tuesday, May 21, 2013 at 3:55pm*

**Math- 5th grade**

Shauna baked bread rolls to sell at a school fair. 2/5 of the rolls were chocolate rolls, 1/3 were raisin rolls, 1/4 of the remainder were strawberry rolls, and the rest were vanilla rolls. What fraction of the rolls were vanilla rolls?
*Tuesday, May 21, 2013 at 1:03am*

**7th grade math**

Hello there! I am totally confused what does x = 4x+3+2x= 54/9 Thank you ;) & please help me!?!
*Monday, May 20, 2013 at 7:45pm*

**7th grade math help**

Hi I need help on how many outcomes are possible for these? For breakfast choices possibilities. I tried, but I feel like I am not getting it. Coffee (c) orange Juice (o) scarmabled (s) hard boiled (h) poached (p) bagel (b) toast (t) Please help??
*Monday, May 20, 2013 at 6:26pm*

**7TH GRADE MATH**

If the radius of a cylinder is 1.8 meters and its height is 7 meters, the volume of the cylinder is approximately 71.2 cubic meters...true or false I say false because shouldn't it be 71.2 cubic 3? Am I correct?
*Sunday, May 19, 2013 at 4:53pm*

**chemistry**

Describe the preparation of 2litre of 0.05molar silver from the primary standard grade solid.
*Sunday, May 19, 2013 at 2:11am*

**chemistry**

Describe the preparation of 2litre of 0.05molar silver from the primary standard grade solid.
*Thursday, May 16, 2013 at 3:05am*

**Leadership Quality**

Is staying after school to help file papers and grade papers a leadership quality?
*Wednesday, May 15, 2013 at 8:49pm*

**7th Grade Math ~Multiplying Polynomials**

1. (2x)(10x) (1point) 20x 12x 20x^2** 5x 2. -3m(m+8) (1point) -3m^2+24 -3m^2-24m** -24m^2 -4m+5 3. 4d(2d-9) (1point) 8d-36d -d -28d^2** 8d^2-36d 4. 5b(6b-10) 11b-10 5b^2+6b-10 -b-10 30b^2-50b** Are these right
*Tuesday, May 14, 2013 at 8:56pm*

**7th grade math**

Horses, pigs and cows is really easy I can do it in my head but, my teacher told me I would have to start showing my work. I really have no clue how to do that I have always done it in my head. Can you pretty please help me I would gladly appreciate it. Thank you. :)
*Tuesday, May 14, 2013 at 8:13pm*

**7th grade math**

How does functions in math relate to what you put into it is what you get out of it? Can you explain for me? i'm thinking it doesn't really? one example if you can like in sports or goverment? Don't know.
*Tuesday, May 14, 2013 at 6:26pm*

**8need a function rh grade math**

a 154 lb person burns 420 calories per hr riding an exercise bike at 15 mph. Need a function rule to represent the total calories burned over time.
*Tuesday, May 14, 2013 at 2:36pm*

**5th grade math (dividing fractions)**

Can you check this problem? How many twelfths are in one sixth? work: 1/6 divided by 1/12 = 1/6 * 12/1 = 2 ans= 2
*Monday, May 13, 2013 at 7:40am*

**Math**

I made a 95 on a test of 20 questions, but it took 35 tries. What is my real grade?
*Sunday, May 12, 2013 at 3:16pm*

**Grade 12 Calculus **

I need helping in filling in the blanks/ -the angle formed at the centre of the circle by two radii is the _______ angle. -cos delta, sin delta, tan delta are known as the ___________trigonometric ration -cos (pie/2 - x)=sinx is an example of a ________ identity
*Saturday, May 11, 2013 at 11:42pm*

**Social studies**

whats a 7th grade social studies word that begins with Y?
*Thursday, May 9, 2013 at 8:18am*

**grade 12**

describe the life style disease/ behaviour and explain 5 factors that contribute to cancer of the gullet.
*Wednesday, May 8, 2013 at 3:46pm*

**stats**

It was thought that students who dressed more neatly received better grades. To test this idea, a researcher rated each student on neatness of dress and obtained their grades on a standard school achievement test. The data are presented below. Higher scores indicate higher ...
*Wednesday, May 8, 2013 at 1:20pm*

**Math**

You estimate there is an 80% chance you will get an A on your math final, and a 75% chance you will get an A for your semester grade. What is the probability that both will happen?
*Tuesday, May 7, 2013 at 8:47pm*

**Technology Skills class???? Grade 9???**

So I got accept to this Catholic private high school. So we are required to take "Technology Skills". What am I going to learn in this class??????
*Tuesday, May 7, 2013 at 6:23pm*

**12th grade goverment**

who could vote in elections for colonial legislatures
*Tuesday, May 7, 2013 at 10:11am*

**5th grade math**

What is 508 times 7?Thanks if you help:)
*Monday, May 6, 2013 at 4:42pm*

**7th Grade Math**

What is the measure of an exterior angle of a regular polygon in which the sum of interior angle measures is 5400 degrees? A. 11.25 degrees B. 30 degrees C. 32 degrees D. 168.75 degrees
*Sunday, May 5, 2013 at 2:54pm*

**6th grade math**

How do you do square route i know a little like square route of 9 is 3 but i need more practice with square routes do you know any websites that can help.
*Thursday, May 2, 2013 at 5:08pm*

** 5th grade Math**

How do you add fractions with different denominators? Thanks if you help :)
*Wednesday, May 1, 2013 at 3:33pm*

**6th grade grammar please help**

I need a good grade in grammar so please check my answers! Identify the object of the preposition in each of the following sentences. 1. Ashley and her father arrived home from work. a. and b . father c. from d. work 2. Ashley’s bedroom was across the hall. a. bedroom b. ...
*Tuesday, April 30, 2013 at 9:20pm*

**3rd grade math**

draw a box that has 3 valumes of 12 cubic units in 3 different ways
*Tuesday, April 30, 2013 at 8:03pm*

**7th Grade Math**

If a diameter of a circle (which is 18 inches) is tripled, can the expression 9 (254.34 in square) be used to find the new circle? I know the answer is yes but I can't figure out how you work it! I come with 9(1,107.36 in square) but apparently that is not correct.... ...
*Tuesday, April 30, 2013 at 6:23pm*

**4 grade math**

gina ate 1/6 of an apple pie. Greg ate 1/2 of the same apple pie. how much of the apple pie was left
*Tuesday, April 30, 2013 at 5:51pm*

**grade 12 chemistry**

explain the concept of a “stock solution” and standard solutions as if you were explaining it to a friend who is not studying chemistry.
*Tuesday, April 30, 2013 at 3:18am*

**5 th grade math**

pilar has 4 marbles in a bag .they are green,red,blue,and yellow.she chooses a marble without looking,replaces it,and then chooses another marble.if she wants to get a green marble exactly 1 time out out of the 2 draws,how many favorable outcomes are possible?
*Sunday, April 28, 2013 at 1:33pm*

**math**

jim has grades of 84, 65, 76 on three tests. what grade must he obtain on the next test to have an average of exactly 80% for all four tests?
*Saturday, April 27, 2013 at 9:36pm*

**science and english only for ms sue**

what the steps to the water cycle and what is the writing process and what the steps for 7th grade and please help me as soon as possible please ms. sue...
*Wednesday, April 24, 2013 at 5:39pm*

**statistikc **

We want a confidence interval for the mean IQ of all the 7th grade girls in that school district. We do not know the population standard deviation so we use the confidence interval that uses the t. In order to use the t-interval we need to assume that the variable IQ has a ...
*Wednesday, April 24, 2013 at 11:15am*

**10 grade algebra**

In the following system of equations, what does x equal? -10x - 2y = 56 6x - 2y = -40 x = 6 or x = -6 or x = 2 or x = -2
*Wednesday, April 24, 2013 at 9:45am*

**10 grade algebra**

15. In the following system of equations, what does x equal? -10x + 4y = -64 -10x - 8y = -112
*Wednesday, April 24, 2013 at 9:29am*

**6th grade Math**

I need help on the problem below. The instructions say to "factor the expression" and the expression is: -.2x^2 + 80x -6000. Thanks
*Tuesday, April 23, 2013 at 6:44pm*

**5th grade math (word problems)**

Problem: A receipe for 4 dozen cookies requires 1 1/2 cups of flour. How much flour is needed for 1 dozen? work: 4 divided by 1 1/2 = 4/1 x 3/2 = 4/1 x 2/3 = 8/3 cups of flour Can you explain why i don't need to change 4 dozen to 48 and then divide by 1 1/2?
*Tuesday, April 23, 2013 at 5:25pm*

**Psychology**

Dr. Allen is trying to determine the best method by which to draw a comparison between the amount of time his students spend in the library to the grade point average of his students across the spectrum. Which research design should Dr. Allen follow, and why? Answer ...
*Tuesday, April 23, 2013 at 4:10pm*

**Algebra 2**

Suppose you are researching the eating habits of people your age. What sampling method could you use to find the percent of students in your grade who eat five servings of fruit and vegetables each day? What is an example of a survey question that does not have bias?
*Tuesday, April 23, 2013 at 7:19am*

**Science**

How do I calculate between the race of two automobiles in kilometer speed this is a 8th grade science question
*Monday, April 22, 2013 at 10:09pm*

**english**

what are the different kinds of nouns for 7th grade and what do they mean? ms. sue if you can may you help me????
*Monday, April 22, 2013 at 5:23pm*

**5th grade math (word problems)**

Mrs. Jones bakes pies. She always cuts each pie into 8 slices. Ther are 13 slices left on the counter. How many pies are on the counter? (write as mixed number). work: 13/8 = 1 5/8 pies. Is this correct?
*Sunday, April 21, 2013 at 8:33pm*

**8th grade science**

the question is: "The absolute magnitude of a star is -12.. How would you describe its brightness?"
*Saturday, April 20, 2013 at 8:09pm*

**Grade 12 Calculus **

Evaluate each of the following. Show all your calculations. f" (0) if f(x) = 14x^2 + 3x − 6
*Friday, April 19, 2013 at 6:13pm*

**Grade 12 Calculus **

Evaluate each of the following. Show all your calculations. f" (1/3) if f(x) = −2x^5 + 2x − 6
*Friday, April 19, 2013 at 6:12pm*

**5th grade math**

One patern called for 2/3 of a yard of lace, and another pattern called for 5/9 of a yard of lace. In simplest form, how much more lace did the first pattern call for than the second?
*Friday, April 19, 2013 at 5:19pm*

**Math Help?! 7th grade. **

1. Determine which ordered pair is a solution of y = x*2–2. (5, 21), (–5, 24), (–1, –1), (–2, 6) 2. Without graphing, tell whether the line containing (6, –3) and (0, –8) is horizontal, vertical, or neither.
*Friday, April 19, 2013 at 10:04am*

**3rd grade math**

What does 5 fracture each 1/2 mean?
*Thursday, April 18, 2013 at 11:58pm*

**Grade 12 Calculus **

Determine the absolute extrema of each function on the given interval. Illustrate your results by sketching the graph of each function. f(x) = (x − 1)^2 , 0 ≤ x ≤ 2
*Thursday, April 18, 2013 at 7:01pm*

**Grade 12 Calculus **

Determine the absolute extrema of each function on the given interval. Illustrate your results by sketching the graph of each function. a) f(x) = x^2 − 4x + 3 , 0 ≤ x ≤ 3 b) f(x) = (x − 1)^2&#...
*Wednesday, April 17, 2013 at 9:44pm*

**5th grade reading**

Can someone tell me what is the difference between an idiom and a hyperbole?Thanks if you help!:)<3
*Wednesday, April 17, 2013 at 3:59pm*

**7th grade math**

How many times larger is a cube than a pyramid with the same base?
*Wednesday, April 17, 2013 at 3:42pm*

**7th grade math**

How many times larger is a cube than a pyramid with the same base?
*Wednesday, April 17, 2013 at 3:02pm*

**Math**

Umm Im in 5th grade and I do not under stand this at all because I don't know what the brakets are and how do you you use them heres the question 108 + 3[15 - (3 + 9)]=?
*Tuesday, April 16, 2013 at 8:07pm*

**Grade 12 Calculus **

Determine the absolute extrema of each function on the given interval. Illustrate your results by sketching the graph of each function. a) f(x) = x^2 − 4x + 3 , 0 ≤ x ≤ 3 b) f(x) = (x − 1)^2&#...
*Tuesday, April 16, 2013 at 12:15pm*

**Grade 12 Calculus **

State the absolute maximum value and the absolute minimum value of each function, if the function is defined on the interval shown. {I CANNOT POST THE GRAPH SO CAN SOMEONE EMAll ME AT miss.a.parker at hot mail(. com) SO I CAN EMAIL IT TO THEM SO YOU CAN HELP ME? I WOULD LOVE ...
*Monday, April 15, 2013 at 7:05pm*

**Grade 12 Calculus **

Evaluate each of the following. Show all your calculations. a) f'(3) if f(x) = x^4 − 3x b) f' (−2) if f(x) = 2x^3 + 4x^2 − 5x + 8 c) f" (&#...
*Monday, April 15, 2013 at 7:00pm*

**Grade 12 Calculus **

Determine the maximum and minimum of each function on the given interval. a) = 2x^3 − 9x^2 ,−2 ≤ x ≤ 4 b) = 12x − x^3 , x∈ [−3,5]
*Monday, April 15, 2013 at 6:47pm*

**Grade 12 Calculus **

Determine the velocity and acceleration as functions of time, t, for s(t) = 45t − 5t^2, where s(t) represents the distance as a function of time. (Hint: velocity and acceleration correspond to the first and second derivatives of the distance)
*Monday, April 15, 2013 at 6:44pm*

**Grade 12 Calculus **

Determine the absolute extrema of each function on the given interval. Illustrate your results by sketching the graph of each function. a) f(x) = x^2 − 4x + 3 , 0 ≤ x ≤ 3 b) f(x) = (x − 1)^2&#...
*Monday, April 15, 2013 at 6:42pm*

**Grade 12 Calculus **

Determine the absolute extrema of each function on the given interval. Illustrate your results by sketching the graph of each function. a) = − 4 + 3 , 0 ≤ ≤ 3 b) = − 1 , 0 ≤ &#...
*Monday, April 15, 2013 at 6:40pm*

**science**

______________ can prevent some bacterial cells? 7th grade science please help meeeee ms sue help me please thanks
*Monday, April 15, 2013 at 6:21pm*

**science**

______________ can prevent some bacterial cells? 7th grade science please help me.
*Monday, April 15, 2013 at 5:20pm*

**5th grade math**

I dont get it! /is 20 times 5/6 greater than or less than 20
*Monday, April 15, 2013 at 4:41pm*

**math**

on the test had 50 items gertrude got 34 out of the first 40 correct. if she received a grade of 80% on the test how many of the last 10 did she have correct
*Monday, April 15, 2013 at 2:47pm*

**physics grade 12.**

A spring is extended by 4mm when a load of 2.N was applied. a)What is its spring constant? b)How much would it extend if a losd of 150g was suspended from it?
*Sunday, April 14, 2013 at 5:38pm*

**statstics**

construct a 90 confidence interval for the population mean ÃŽÂ¼. assume the population has a normal distribution. A sample if 15 randomly selected math majors has a grade point average of 2.86 with a standard deviation od 0.78. Round to the nearest ...
*Sunday, April 14, 2013 at 12:20pm*

**social studies 8th grade**

Can you please help me find an accurate map of The Treaty of Fontainebleau 1762? I am trying to complete a project and want to make sure it is accurate
*Saturday, April 13, 2013 at 11:22am*

**8th Grade Math**

I need help on the following please? A group of clowns performs in a ring with an area of about 2,123 square feet. What is the circumference of the ring? Choose the closest answer. 156 ft. 52 ft. 163 ft. 82 ft. Thank You. Please explain the answer
*Friday, April 12, 2013 at 9:10pm*

**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
*Thursday, April 11, 2013 at 9:51pm*

**10th grade chemistry **

How many grams of kno3 can be dissolved in 100g of h2o at 50°c
*Thursday, April 11, 2013 at 8:46pm*

**business**

what studies should i take if i pass my business studies with higher marks?...(I'm in grade 12)
*Thursday, April 11, 2013 at 6:26am*

**6th grade grammar**

Put brackets [ ] around the adverb in each of the following sentences. Write how if the adverbs tell how, when if the adverbs tells when, or where if the adverb tell where the action takes place. 1.Her grandmother said, “You cannot wear it now!” Please Help!
*Wednesday, April 10, 2013 at 7:03pm*

**7th grade science**

Q: A pair of fruit flies reproduces and has 1000 offspring. All 1000 of the offspring have the alleles Gg. What is the most likely combination of alleles that each parent has, and why are other combinations not likely?
*Wednesday, April 10, 2013 at 6:30pm*

**physics**

Venus is a grade 12 learner and she claims that she can shoot a stone 50m vertically high by using a catapult.She wants to know the relationship between the height reached by the stone and the initial velocity of it.
*Wednesday, April 10, 2013 at 12:44pm*

**math-7th grade algebra 1**

Please show the steps and explain how to do this as well. 3√8 · 2√5
*Wednesday, April 10, 2013 at 1:18am*

**6th grade math**

How to figure if 60 cookies were baked and 7/12 were given away, how many are left?
*Tuesday, April 9, 2013 at 9:40pm*

**psychology**

A behaviorist is asked to evaluate five students in the second grade who exhibit impulse control problems. The behaviorist decides it is best initially to study them in the classroom without interfering with the behavior. This behaviorist is conducting __________ research.
*Tuesday, April 9, 2013 at 9:10pm*

**3rd grade math\**

A hlaf dozen hair clip cost 43.90. maria wants to buy 4 hair clips. how much will she pay for them?
*Tuesday, April 9, 2013 at 5:38pm*

**Math**

I am in third grade and have a word problem that I don't understand. There is a picture of a retangular window with 12 little squares inside divided by wood. The question is how many feet of lights would be needed to hang around five windows like this one. There are no ...
*Tuesday, April 9, 2013 at 5:31pm*

**3rd grade math**

a package of 4 button costs $1.30. how much will 4 package cost?
*Tuesday, April 9, 2013 at 5:14pm*

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