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April 19, 2014

Homework Help: 8th Grade

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Math 8th grade
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Monday, January 11, 2010 at 3:58pm

8th grade math
Volume = length * width * height If you are asked to find the length, width, or height, you must be given either values or other equations to solve for a variable.
Wednesday, January 6, 2010 at 8:37pm

8th grade
(7 x 4 + 5 to the second power) divided by (8 - 1 + 7 to the second power) = (7 x 4 + 5^2) divided by (8 - 1 + 7^2) = (28 + 25)/(7 + 49) = 53/56
Monday, January 4, 2010 at 10:09pm

8th grade
How do you evaluate (7 x 4 + 5 to the second power) divided by (8 - 1 + 7 to the second power)?
Monday, January 4, 2010 at 10:06pm

8th grade
The area of a rectangle is 45cm2. The height is one less than two times the base. what is the length of the base
Monday, January 4, 2010 at 3:14pm

Math
8th grade math. I cannot help my grandson with his math. I do not understand it myself. It is dealing with percentages. I do not understand it.
Thursday, December 31, 2009 at 12:40pm

8th grade
Math. I thought it was understood when I said math homework and the question asked about percentages.
Thursday, December 31, 2009 at 12:36pm

Math, not "8th grade"
Assistance needed. Please type your subject in the School Subject box. Any other words are likely to delay responses from a teacher who knows that subject well.
Thursday, December 31, 2009 at 12:33pm

8th grade
The hypothesis is that the special reading program will improve the students' reading skills.
Monday, December 21, 2009 at 11:20pm

8th grade science
What law states that unlike charges attract each other while like charges repel each other?
Thursday, December 17, 2009 at 12:39pm

U.S History- 8th grade
Middle and southern what? Since this is US history, do you mean New England?
Sunday, December 13, 2009 at 9:40pm

U.S History- 8th grade
What was the major difference between the three regions? (geographical difference) The regions are england, middle and southern.
Sunday, December 13, 2009 at 9:14pm

U.S History- 8th grade
What was the geography and economy like in the England colonies, middle colonies, and southern colonies? Do you guys know any good websites to check out?
Sunday, December 13, 2009 at 9:05pm

Math, not "8th grade"
Assistance needed. Please type your subject in the School Subject box. Any other words are likely to delay responses from a teacher who knows that subject well.
Friday, December 11, 2009 at 7:52am

Math, not "8th grade"
Assistance needed. Please type your subject in the School Subject box. Any other words are likely to delay responses from a teacher who knows that subject well.
Monday, December 7, 2009 at 8:56pm

8th grade
need help thank-you translate the verbal phrase into an inequality, then solve the inequality and graph your solution, the product of 6 and the difference of 6x and 3 is less than or equal to the product of -2 and the sum of 4 and 8x
Monday, December 7, 2009 at 8:55pm

8th grade science
To draw the nucleus, draw 14 small balls clustered together. Use one color for protons and another for neutrons. Don't forget the electrons orbiting around the nucleus. I hope this helps.
Saturday, December 5, 2009 at 11:53am

8th grade
you equation 2would be: $11.95 = $4.95 + .35x(<trying to find) (^total) (first, sub. 4.95 from both sides.) $7.00 = .35x (now, you divide each side by .35 to get X by its self.) 20=x OR x=20 (.35 didided by .35 will cancle each other out. you should be left with x=20. that ...
Thursday, December 3, 2009 at 1:02am

8th grade math
11.95 - 4.95 = $7.00 7.00 / 0.35 = ?
Wednesday, December 2, 2009 at 6:14pm

8th grade
FILM PROCESSING COSTS $4.95, PLUS 0.35 FOR EACH PICTURE PRINTED. MILAN PAID $11.95 FOR PROCESSING AND PRINTING. HOW MANY PICTURES DID HE HAVE PRINTED?
Wednesday, December 2, 2009 at 6:12pm

8th grade Algebra I (junior level math)
g/5 = 6/10 First, cross-multiply. 10g = 30 Then solve the equation. g = 30/10 g = 3 Now substitute 3 for g. 3/5 = 6/10 Aren't they the same?
Tuesday, December 1, 2009 at 7:28pm

8th grade Algebra I (junior level math)
How do i solve proportions? step by step answers plz!!!! EXAMPLE! g/5 = 6/10
Tuesday, December 1, 2009 at 7:23pm

8th grade Algebra I (junior level math)
Hello, I am currently in Unit 4-1 (Ratio, and Proportions) and I don't understand how pairs of ratios could form proportions. Could someone give me step by step instructions? Thank You
Tuesday, December 1, 2009 at 7:14pm

8th grade
Let x equal the amount of snow that Tokyo gets. x + 3x = 80 4x = 80 x = 20
Tuesday, December 1, 2009 at 7:02pm

8th grade math
John has already saved $40 and wants to buy an I-Pod for $129 in 4 months. To find how much he should save each week he wrote the following equation: 40+16n=129.
Sunday, November 29, 2009 at 10:14am

8th Grade Social Studies
A. The House has authority to impeach the President. It does not need the Supreme Court's input, and the Court cannot issue "arrest warrants" for the President. After impeachment, the Senate tries him. So the answer is A
Saturday, November 28, 2009 at 12:07pm

8th grade math
Your problem is very confusing. You "need to know what two fractions when subtracted equal" then you list 3 fractions. Which two are to be subtracted. What do we do with the third one?
Friday, November 27, 2009 at 5:40pm

Algebra 1: 8th Grade
Any hot girls want to halla at pretty boy. ''It's Dj and I know you can see that, I'm a pretty rich dood, and all the boys wanna be that''.
Wednesday, November 25, 2009 at 4:53pm

8th grade math
5 to the tenth power times 5 to the eleventh power. Find the product or quotient and then write your answer using exponents.
Monday, November 23, 2009 at 12:10am

8th grade math
Hi i need one more example of this algebraic expression please. and explain please. Fig# Value 1 0 2 1 3 8 4 27 Math-Nick
Sunday, November 22, 2009 at 1:28pm

Math, not "8th grade"
Assistance needed. Please type your subject in the School Subject box. Any other words are likely to delay responses from a teacher who knows that subject well.
Sunday, November 22, 2009 at 1:19pm

Science, not "8th grade"
Assistance needed. Please type your subject in the School Subject box. Any other words are likely to delay responses from a teacher who knows that subject well.
Sunday, November 22, 2009 at 1:19pm

8th grade math
It looks like a progression from 2-5, with each number being cubed. 2^3 = 2 * 2 * 2 = 8 If you let n stand for the number in your first column, then these would be the algebraic expressions. (n + 1)^3 = 8 (n + 1)^3 = 27 And so on. I hope this helps.
Sunday, November 22, 2009 at 12:29pm

8th grade
Hi my class is doing a unit on patterns with algebraic expressions. And i need to find a difficult expression Figure# Term value 1 8 2 27 3 64 4 125 what is the algebraic expression and how did u do it? thank you. Math-Nick
Sunday, November 22, 2009 at 12:18pm

8th grade
Nathan Hale was the one that famously said "I only regret that I have but one life to lose for my country".
Wednesday, November 18, 2009 at 9:57am

8th grade
who said, "I only regret that I have that I have but one life to lose for my country"
Wednesday, November 18, 2009 at 9:39am

8th grade Science
Please help need ideas I am building a 3D model of a plant and animal cell. I need to show diffusion and osmosis movement within the cell.
Sunday, November 15, 2009 at 8:34am

8th Grade Social Studies
like how they used the salt trade because they couldn't communcate, but I'm not exactly sure how the salt trade system worked, so I'm not sure what to draw
Thursday, November 12, 2009 at 8:40pm

8th grade
its in Algebra 1 ! the riddle is whom should you see at the bank if you need to borrow money. its 15 letters. a teller doesnt fit. i dont know ! i need help ! PLEASE
Wednesday, November 11, 2009 at 9:09pm

8th grade Clinton Junior High School
Divide powers means you subtarct the exponent Example (^ means "to the power of") 5^4 divided by 5^2 = 5^4-2 = 5^2 Secondteacher (look it up on Google) Trev
Monday, November 9, 2009 at 3:12am

8th grade Clinton Junior High School
For your own safety on line, NEVER NEVER give your town/city, name, school, etc. online. Sra
Thursday, November 5, 2009 at 11:53pm

physical science 8th grade
63.546=X*62.9298+ (1-X)64.9278 where X is the decimal precent of Cu63, and 1-x is the decimal percent of Cu65
Wednesday, November 4, 2009 at 5:40pm

8th grade
You can also find antonyms at www.thesaurus.com. Be careful of spelling or the thesaurus won't know what you're looking for.
Tuesday, November 3, 2009 at 4:48am

8th grade History/English
I need to name three influential pilots in Life on the Mississippi by Mark Twain. I already have two: Mr. Brown Mr. Bixby I need one more. Anyone know one?? Thanks!
Sunday, November 1, 2009 at 1:44pm

8th grade
You must be much more specific on what "cleaner" means before you proceed. Discuss this with your parents or teacher, because "cleaner" is not a useful term.
Wednesday, October 28, 2009 at 6:28pm

8th grade
Please Help Me. I'm doing a Science Fair Project, and I need help with finding simmilar experiments to mine. My experiment is: Which saliva is cleaner: Cat, Dog, or Human???
Wednesday, October 28, 2009 at 6:22pm

8th grade
A chemical solution is a mixture of two or more substances. Examples: air, carbonated water, blood plasma, petroleum, sugar water
Monday, October 26, 2009 at 11:33pm

8th grade
a student wo weighs 500 newtons climbed the stairs from the first floor to the third floor 15 meters above in 20 seconds A.how much work did she do? B.what was her power
Sunday, October 25, 2009 at 2:09am

8th grade
In "Beef Flat"... in comparison to "B Flat" Ha Ha Ha.
Wednesday, October 21, 2009 at 12:04pm

8th grade
n+3=12 transposing (-3)to r.h.s n=12-3 n=9
Sunday, October 18, 2009 at 12:40pm

8th grade
Great Britian gradually raised its taxes because #1 they couldnt pay taxes to the king#2price of tea raised
Wednesday, October 14, 2009 at 5:48pm

8th grade
6n-(-2n)+8 6n--2n+8 8n+8 8(n+1) n=-1 I hope this is right.
Monday, October 5, 2009 at 10:30pm

algebra
8th Grade Algebra (AP) f(x)=-3x Model the rule with a table of values and a graph.
Monday, October 5, 2009 at 10:01pm

math 8th grade
Create two fractions. 72/100 = ?/200 Then, cross multiply, which is multiplying 200 by 72, then dividing by 100. Then, you'll get your answer.
Monday, October 5, 2009 at 5:44pm

8th grade
Direct Variation: when you have a job that pays an hourly wage, the amount you earn varies directly with the number of hours you work. Suppose you earn $7.10/ hour working at the library.
Saturday, October 3, 2009 at 10:55am

8th grade - science
According to your previous description, the minimal (smallest) unit in the ruler would define the preciseness. You also answered your other two questions in your previous post. Read it again more carefully.
Friday, October 2, 2009 at 5:21pm

8th grade science
Please do not keep posting the same question. If there's something you don't understand about an answer, please be specific about what is you don't understand.
Friday, October 2, 2009 at 2:10pm

8th grade math
2 x 10^4 light years x (5.87 x 10^12 miles/light year) = ??
Wednesday, September 30, 2009 at 12:41pm

8th Grade Math
How do you solve this equations? (xy^-3)^-5 (3x^4)(4x^12) ab^-6 ______ c^0d^-4 x^3y^0(z^-4) Can you please show it step by step? Thanks.
Saturday, September 26, 2009 at 1:08pm

8th Grade Math
x/y=4, means x=4y substitute 4y for x in x-y=9 to get (4y)-y = 9 Can you continue? Note: the third equation (y-x)=-9 can be derived from the second (x-y)=9, so it gives no new information.
Thursday, September 24, 2009 at 9:08pm

Science
Also, I'm pretty sure Aaron's words are correct... they seem to fit. Thanks! Anyway, it is 8th grade physical science and we're learning about the scientific method.
Tuesday, September 22, 2009 at 4:38pm

8th grade history
please tell me a website where i could find the americans technologies that they used back then please and also find me a ebsite on the pictures of old technologies
Friday, September 18, 2009 at 9:10pm

8th grade Math
I assume you mean sqrt (28x) + sqrt(63x) sqrt(7*4x) + sqrt(7*9x) 2sqrt(7x)+ 3sqrt(7x) 5sqrt(7x)
Wednesday, September 16, 2009 at 8:11pm

8th grade Math
Adding Expressions with Square Roots 28x square root + 63x square root
Wednesday, September 16, 2009 at 8:07pm

3rd grade
grade 1 215 grade 2 186 grade 3 259 how many more were sold bt grade 3 than by grade 2? 73 answer why aren't any of the tens regrouped to subtract the ones?
Monday, September 14, 2009 at 4:11pm

8th grade
on a map I need to lacate Mt.Olympus,Mt.Parnassus,Mt.Pindos and Mt.Helicon all on one Mythology map.
Sunday, September 13, 2009 at 9:04pm

8th grade social studies
explain to me how climate changes had a affect on the changes of culture please!!
Tuesday, September 1, 2009 at 5:30pm

social studies
how can social studies affect me iam a 8th grade student
Monday, August 31, 2009 at 8:10pm

8th grade Math
One inch of water in this tank contains 384 cubic inches. 576 / 384 = 1.5 inches
Monday, August 24, 2009 at 1:23pm

8th grade
Fine the complete subject or predicate of the sentence. then identify the simple subject or verb. Examble; The peaks of the undersea mountains rise above the surface of the water and form islands.
Wednesday, August 12, 2009 at 9:13pm

8th grade
n+3=12 12 - 3 _____ 9 n+3=12 CHECK IT! 9+3=12 9 n=9 +3 ___ 12 TADA!!!
Monday, July 27, 2009 at 7:29pm

8th grade
I wanted to welcome you ASAP to our little family here in the States. It's high time we shook hands in person and not just across the sea. I'm pleased as punch about getting to know you all, and I for one will do my level best to sell you on America.
Sunday, July 19, 2009 at 10:44am

8th grade
Write a polynomial expression in simplest form that represents the difference between the area of the larger rectangle and the area of the smaller rectangle. Then find the difference when x=4.
Wednesday, June 3, 2009 at 7:51pm

Math, not "8th grade"
Assistance needed. Please type your subject in the School Subject box. Any other words are likely to delay responses from a teacher who knows that subject well.
Tuesday, May 26, 2009 at 10:11pm

8th grade
can u help me to find the product of -4x^2 and x^3 + 2x^2 - 5x + 3 and the solution to the equation of x^2 + 30x = 1000...I came up with -20 and 50 but i dont think it is right..can u help also can you help me to do the factorization of 6x^2 - 2x - 20.....Help please help
Tuesday, May 26, 2009 at 10:06pm

8th grade
Can you help me find the roots of the polynominal of 5x2 - x....I believe it is 0 and 5... I need help in finding the factorization of x2 - 15x + 56 and can u help me in finding the solutions of the equation x2 + 30x = 1000... I came up with 20 and 50..but i think it is wrong...
Tuesday, May 26, 2009 at 9:51pm

8th grade
okay, i know i can't help you with your problem, but I REALLLLLY need help with mine, could you help? Linear systems, the equations are 4x+3=y and x=y-2 I need the solution, and I'm stuck, PLEASE help me!
Tuesday, May 26, 2009 at 9:50pm

8th grade
What is the degree of -5a2b + 4a2 -2b +5 also I need help in finding the product of x + 5 and 3x -2. also what is the product of -4x2 and x3 + 2x2 -5x + 3....I need the solutions..Thank You for Your help
Tuesday, May 26, 2009 at 9:46pm

8th grade
South Vietnam refused to participate in this election -- and the country waged a civil war for control. For more details, read this site. (Broken Link Removed)
Wednesday, May 13, 2009 at 6:15pm

8th grade
how do you simplify: 3x+6 ---- 3x^2
Monday, May 11, 2009 at 7:39pm

8th grade Science
Same question. Same computer. Same poster. See same answer below.
Wednesday, May 6, 2009 at 4:10pm

8th Grade Algebra
Multiply. 1) (3t^2 - 2t - 4) * (5t + 9) Writing. 1) Explain why the product of a quadratic polynomial and a linear polynomial must be a cubic polynomial.
Tuesday, May 5, 2009 at 10:40pm

8th Grade History
which of the following constitutional provisions addressed a complaint expressed in the declaration of independence A right to bear arms. B assistance of counsel C trial by jury D right to practice religion
Tuesday, April 21, 2009 at 11:15pm

8th Grade Algebra
I agree that 2 * 5 ft = 10. I would go with 5 * 2^n, since you started out with 5 ft. I hope this helps a little more. Thanks for asking.
Sunday, April 19, 2009 at 12:06pm

8th Grade Algebra
isn't 2*5ft eqaul 10 feet, not 20 ? After doing it twice would be 20 ?
Saturday, April 18, 2009 at 6:00pm

8th Grade Algebra
The total length of strands after one split-an-stretch is 2* 5 ft = 20 ft After doing it twice, it is 40 ft After n spits and stretches, it is 10*2^n long
Saturday, April 18, 2009 at 5:11pm

8th grade
You have to do maths every single day. It's like listening to a song and before you know you know all the words of the song. The same with maths. The more you practice the better you will do
Wednesday, April 15, 2009 at 3:23pm

8th grade
Since we don't know you and your study habits, we really can't answer your question. Please discuss this with your teachers. I'm sure they'll have a lot of good advice for you.
Wednesday, April 15, 2009 at 9:57am

science, not "8th grade"
assistance needed Please type your subject in the School Subject box. Any other words are likely to delay responses from a teacher who knows that subject well.
Wednesday, April 8, 2009 at 5:47pm

8th grade Social Studies
if you mean the one to attack the spanish then the colony would have been the same because this really didn't affect the colony but it affected oglethorpe
Wednesday, April 1, 2009 at 8:09pm

8th grade
Wow that's a tough question. Good luck maybe you could talk about being a farm and the cow being knocked over by a plow or something along that line. Good luck
Wednesday, April 1, 2009 at 9:39am

8th Grade Algebra
Yeah, kinda. I am asking what is the best way to solve each one by either: algebraically, graphing and using the quadratic formula and why you chose that method.
Monday, March 30, 2009 at 11:06pm

8th Grade Algebra
I am having problems understanding how to solve problems like the following: a2 + b2 = c2 Please help me where I can understand solving problems such as the one above.
Monday, March 30, 2009 at 9:51pm

8th Grade Algebra
How I would solve each? first: take sqrt of each side second: factor as difference of two squares third: factor (x(x+10))=0
Monday, March 30, 2009 at 9:37pm

Electromagnetism
**define any of the following** 1.magnet 2.poles 3.magnetic force 4.electromagnetism 5.solenoid 6.electromagnet 7.electric motor 8.electromagnetic induction 9.generator 10.transformer
Monday, March 30, 2009 at 7:44pm

Algebra 1- 8th Grade
I would use the word "mean" "Mean" is what is known as the average in everyday language, "median" is the middle value of a set of data. Of course if you only have two data values, as the x-intercepts, it actually does not matter.
Sunday, March 29, 2009 at 10:36pm

Algebra 1- 8th Grade
if you average the x-intercepts , you get the x coordinate of the vertex. y = x^2 - 2x - 8 = (x-4)(x+2) so the x intercepts are 4 and -2 average of those = (-2 + 4)/2 = 1 so the vertex is (1, ...)
Sunday, March 29, 2009 at 9:53pm

8th Grade Algebra
for the equation the way you stated it as y = x^2 + bx + c the x-coordinate of the vertex would be -b/2 for the more general case of a quadratic function in the form y = ax^2 + bx + c it would be -b/(2a)
Sunday, March 29, 2009 at 12:00am

8th Grade Algebra
if the vertex is x^2 then i'm pretty sure the equation is f(b)= "the square root of"(bx+c-y) but dont quote me on that its just an educated guess you definately need a second opinion
Saturday, March 28, 2009 at 11:18pm

8th Grade Algebra
For a graph of the equation y = x^2 + bx + c, the x-coordinate of the vertex is a function of b. Write an equation for the function.
Saturday, March 28, 2009 at 11:06pm

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