# Homework Help: 7th Grade

**7th grade math**

-2(8-4)-8(-6-8)= im notsure how to do this can someone please explain how to do this and what the answer is, i keep coming up with 2 but that's not right. i need help!

*Monday, May 16, 2011 by Anna*

**english**

David is the 7th president of the club. How can I ask a question from this sentence,the answer of which is 7th?

*Friday, May 6, 2011 by Anonymous*

**7th Grade Science, Plz help due tomorrow!!!!**

What are tetrahymena thermophila's primary source of energy??

*Sunday, May 1, 2011 by Samantha*

**7th grade math**

find a solution method use backtracking to solve equation; 54=6 (4-7V) _______ 2 7b+1 =2 __________ 4 8(56+12 -1) =64 _____3______

*Tuesday, March 29, 2011 by holiday*

**7th grade Math**

Trying to figure out 19.4(x) = 306.52 (gotta find out what X is

*Monday, March 21, 2011 by Kylie*

**7th grade honors math**

Which equation represents an inverse variation? A.3x=2y B.2-2x+y=0 C.y squared= x D.xy=5 If you could tell me the anser then explain how you got it that would be awesome!

*Monday, March 14, 2011 by Nora*

**Math**

There are 256 students in this outstanding 7th grade class. How many scoops of ice cream would have to be used in each cone in order to make a different cone for each person?

*Sunday, March 6, 2011 by Tina*

**7th grade math/distributing property homework**

I need help with the steps of one question: -8(n-2)+4(3-6n)= (-36). Trying to find out what 'n' is

*Wednesday, February 23, 2011 by Emma*

**7th grade math**

The volume of a cube is 343 mm2. What is the length of one side of the cube?

*Wednesday, February 23, 2011 by Lauren*

**Geometry-7th grade**

The diagonals of a rhombus ABCD intersect at point E. If the sides of BC is equal to x + 9 and side DC is equal to 5x-2, find x. How would I set this up-Please give me some direction

*Monday, February 21, 2011 by BethAnne*

**7th grade math**

Find the missing dimension for the three dimensional figure to the nearest tenth, given the volume and other dimensions L= 8m W=4.6m V=88mcubed

*Sunday, February 20, 2011 by Anonymous*

**Math**

use the digits 1,2,3, and 4 to write a number in scientific notation that is close to .001 this was in a 7th grade algebra book... what? is this even possible without the use of 0?

*Wednesday, February 9, 2011 by Tokey*

**science**

need a science project for 7th grade using toy train.

*Saturday, January 29, 2011 by mateo*

**7th grade math**

what is te best numbers for the base of a trapezoid that has a aarea of 4 square units and a height of 1

*Wednesday, January 26, 2011 by sam*

**Math**

Hi, Im In The 7th Grade And I Have To Do A Essay And I Don't Know A Real World Situation That Could Be Modeled By A Mathematical Function Table On Graph ??? Any Help ????

*Wednesday, January 19, 2011 by Brittani*

**7th grade science**

Please help me fill in the following: A windmill converts ________energy to _____energy.

*Tuesday, January 18, 2011 by Alex*

**7th Grade Science**

help me find the answer to this question for tomorrow... can you think of any examples from the real world where lowered genetic diversity is impacting a species' ability to survive?

*Thursday, January 13, 2011 by school8er*

**math**

I am doing pre algabra math and I am in 7th grade I need help to simplify the expression

*Wednesday, January 12, 2011 by ashlyn*

**7th grade science**

OK so i have to do a project on duchenne muscular dystrophy and I need one page notes about them...so can someone please just give me a couple of quick notes on it? thank you!

*Sunday, January 9, 2011 by SkaterGirl*

**7th grade math**

500 divided by 100 explain the decimal movement when dividing by 100.

*Thursday, January 6, 2011 by nick*

**7th grade science**

A woman with normal color vision has a colorblind daughter. What are the genotypes and phenotypes of BOTH parents?

*Wednesday, January 5, 2011 by SkaterGirl*

**7th grade science**

What is an example from the real world where lowered genetic diversity is impacting a species' ability to survive?

*Tuesday, January 4, 2011 by SkaterGirl*

**7th grade**

what is the volume of a cylinder of a diameter 10cm and a height of 10cm

*Thursday, December 16, 2010 by Anonymous*

**7th Grade Math-Exponents**

I don't understand this at all! Please help! Find the units digit for 7^197 without using a calculator. Explain how you found your answer.

*Thursday, December 16, 2010 by Amber*

**7th grade**

how do you find the range of a math problem if you have all even numbers?

*Wednesday, December 15, 2010 by jenny*

**7th grade**

500 words on (how) to write about the law of april 6th 1830?help

*Sunday, December 12, 2010 by james*

**7th grade**

a rectangular block measures 2cm * 1.5cm *1cm .the mass of the object is 31.5 grams .what is its density ?

*Wednesday, December 8, 2010 by Anonymous*

**7th grade**

i need help in Math with Fractions can i have some pointer to remember it. P.s. Thank you guys if u can help

*Tuesday, December 7, 2010 by Mj*

**7th grade**

how do you convert 35ibs per minutes to ibs per hour?

*Monday, December 6, 2010 by sara*

**math**

Find the area of each figure with the given dimensions Trapeziod: b1 = 6,b2=10, h=5 Trapeziod: b1= 4.5, b2= 8, h=6.7 I wasn't in school the day we studied this, and i am only in 7th grade!

*Thursday, December 2, 2010 by Danielle*

**7th grade Science**

will an object with a density of 0.79g/mL float, sink, or remain suspended in water

*Wednesday, December 1, 2010 by Aaliyah*

**Science (6th grade, but actual 7th grade paper)**

We are learning about potential and kinetic energy. There are two ramps. One is short and the other is long. The long one is labeled A, and the short one is labeled B. On which one would a marble go the farthest after touching the ground?

*Tuesday, November 30, 2010 by Needs Help*

**7th grade math**

a moving van's load changes from 1000 pounds to 800 pounds after delivering an appliance. What is the percent of decrease

*Sunday, November 28, 2010 by math*

**7th grade math**

SA=2pi(4 squared) + 2pi (4)(20)

*Friday, November 26, 2010 by Chris*

**7th grade Math**

Find the next three numbers in this sequence and explain the reasoning; 2/3, 2/5, 6/25, 18/125,...

*Tuesday, November 16, 2010 by Rebekah*

**7th grade math**

find a ratio equivalent to the ratio 7 over 9 then use the ratio to write a proportion

*Thursday, November 11, 2010 by chris*

**7th grade Math**

I did tips for math i need HELP!!

*Wednesday, November 10, 2010 by Anonymous*

**7th grade science**

A car with a forward force of 2,000 newtons drives a distance of 20 kilometers in minutes. How much power does it have?

*Sunday, November 7, 2010 by Roland*

**english**

Need ideas for a 7th grade research paper. I like gymnastics and dance. any ideas?

*Wednesday, November 3, 2010 by Paige*

**7th grade**

What is 7540 over 94710 in simplist form?? Please Help! I am terrible at math!

*Tuesday, November 2, 2010 by Rella*

**7th grade**

I have a science essay on the rainforest due tommorow. Need help fast!!!!

*Thursday, October 28, 2010 by Sian*

**7th grade**

determine your distance traveled and displacement if you walk 100m foward than 35m

*Tuesday, October 19, 2010 by Gabriella*

**7th grade**

What is the dimension of a rectangle whos perimeter is 42 inches and its area is 104 square inches? Explain.

*Monday, October 18, 2010 by Leyley*

**7th grade**

What is a good definition of mercantilism? I don't understand when all the definitions talk about economic systems of national wealth. Thank you!

*Saturday, October 16, 2010 by Isabelle*

**7th grade**

what is 344,000,000 in scientific notation?

*Tuesday, October 12, 2010 by Anonymous*

**english 7th grade**

I am to find the subject complement and linking verb in this sentence. At first we felt overwhelmed by the job ahead of us. Could you please help me understand , the examples in my book are not helping. Thank you

*Tuesday, October 5, 2010 by spencer*

**7th grade math**

25t=25t+5

*Saturday, October 2, 2010 by Karan*

**7th grade**

What is a 12 letter word for observations involving descriptions based on instrument measurment?

*Wednesday, September 29, 2010 by Chris*

**Algebra 7th grade**

My teacher has me working on something he calls "tinging fractions". What is this? What does it mean? How does it work?

*Tuesday, September 21, 2010 by Lila*

**english**

i am doing a book report and i havent done one since the 5th grade and now i am in 7th HELP!!!!!!!!!!!!!!!!!!!!!!!!!

*Tuesday, September 21, 2010 by samantha*

**Social studys**

Hi i need help on a 2-3 page essay. The question its based on is" explain and describe how geographers use thier tools to interpret grographic questions" I'm in 7th grade THANKS!! :)

*Monday, September 20, 2010 by Gabrielle*

**7th grade**

my teacher is making us do a current even outside of the us and i STILL can't find a good curren event

*Friday, September 17, 2010 by samantha*

**7th grade**

what is social health? what is mental/emotional health?

*Tuesday, September 14, 2010 by mabel*

**7th grade**

this is from homework work book . write each fraction or mixed numberas a decimal. use bar notation if the decimal is a repeating decimal

*Monday, September 13, 2010 by naida*

**7th grade math**

Write and simplify an expression for the perimeter of the triangle. side A)3x, side B) 5x-4 and side C)2x+5. Thank you!

*Sunday, September 12, 2010 by CJ*

**7th grade Math**

Write and simplify an expression for the perimeter of the rectangle. side A=x+6 Side B=4x-5. Thank you!

*Sunday, September 12, 2010 by CJ*

**7th grade**

Write and simplify an expression for the perimeter of the triangle. side A-4x+3, side B-6X and side C-3x-1. Thank you!

*Sunday, September 12, 2010 by CJ*

**7th grade math**

order these numbers from greatest to least mass 0.05kg,32g,and 430,000mg Thanks alot

*Friday, September 10, 2010 by Melea*

**7th grade**

Simplify each of the following expressions using the distributive property. need help please show work 5(x+y) -3(5+t)

*Wednesday, September 8, 2010 by Henry*

**7th grade social studies**

in the feudal system of Europe, lords owed their loyalty to the ???

*Monday, August 23, 2010 by tim*

**7th grade**

I am trying to unscramble ecrfenine in my science homework and cannot get an answer. My mom has read the whole chapter as well with me and we cannot find it. It has to do with scientific method.

*Wednesday, August 18, 2010 by kaitlyn*

**7th grade**

The diameter of a spider's thread is 1.0 x 10 -3 inch. Write the number in standard form.

*Wednesday, August 18, 2010 by Kaylee*

**7th grade**

rosa wants to buy a computer desk that originally cost $650. It has been marked down to a new price of $520. What is the percent off?

*Monday, August 9, 2010 by Serena*

**7th grade**

I need help with these math problems. a + 8 b + a ba b divide a 3b 48 divide b a - 3 a times 0 4a - b 5 + b - 3 b divide a = 8 4b - 30

*Sunday, June 6, 2010 by Alisha*

**7th grade pre-algebra**

How to write an expression for the perimeter of the polygon. simplify the expression

*Thursday, May 13, 2010 by Colre*

**7th grade**

only three words in standard English begin with the letters ' dw' and they are all common words. name two of them.

*Wednesday, May 12, 2010 by taylor*

**7th grade**

six coins are dropped on the floor. find the probability that they will all land heads up.

*Thursday, May 6, 2010 by kevin*

**Pre-ap 7th grade math**

Beads for sale: 12cents for 15. Write an equation relating the cost (c) and the number of beads (n) for the beads.

*Wednesday, May 5, 2010 by Ken*

**7th grade**

How can hardware,software,and the user of a computer work together to complete a task?

*Monday, April 26, 2010 by Anonymous*

**7th grade english**

Is there a free grammar check website that I don't have to sign up for or download?

*Thursday, April 22, 2010 by john*

**science**

what are some ideas for a compound machine for my 7th grade invention project that can be useful in people's daily lives

*Sunday, April 18, 2010 by Danae*

**science, 7th,6th,8th,9th grade**

In what three ways can machines make work easier?

*Thursday, April 15, 2010 by Nyla Rose*

**7th grade**

find the Volume of a cylinder with a radius of 14 in and a height of 21 in. Then Change Your Answer In Cubic Feet?

*Monday, April 12, 2010 by hillary*

**7th grade**

if you take apart 5x5x5 cube and build a pyramid with the same cubes, with each layer of the pyramid being a square and the top ending as a 1x1x1. How many tiers can you make?

*Sunday, April 11, 2010 by tia*

**7th grade Science**

Think critiacally how could 2 observers measure a different speed for the same moving object please answer as soon as possible thank you

*Sunday, March 28, 2010 by me myself and i*

**7th grade Science**

Determine your distance traveled if you walk 100m forward and then 35m backward

*Sunday, March 28, 2010 by Mary*

**7th grade science**

Determine your distance traveled and displacement if you walk 100m forward and then 35m backward please answer as soon as possible thank you

*Sunday, March 28, 2010 by Mary*

**7th grade**

If the time is 9:00 am in denver what time is it in los angelas ?

*Wednesday, March 24, 2010 by jazmin*

**Math Simplification 7th grade**

I'm skipping luch to do a project and I have the answers, just nt enough time to simplify! I'm short on time! 39/49=? 45/73=? 42/60=?

*Wednesday, March 24, 2010 by Journey*

**7th grade social studies**

what types of plans or previous forms of government can james madison call apon to dragt the constitution of the united states?

*Saturday, March 20, 2010 by mary*

**7th Grade Math**

Find the area of the circle described. Use pi= 22/7. Diameter= 1.4cm Please help!

*Saturday, March 13, 2010 by Elizabeth*

**7th grade**

Nikki read 896 pages of her book this week. How many pages is this per day?

*Wednesday, March 10, 2010 by Anonymous*

**7th grade**

how did some people hope to solve the problem of california's isolation from the rest of the country

*Monday, March 8, 2010 by marcus*

**7th grade**

I need general info on the Versailles Palace in France. I can't seem to find any sites that are easy to understand.

*Thursday, March 4, 2010 by tyra*

**7th grade**

what ideas can i get to persuade my class about why we should have longer days and time in school.

*Wednesday, March 3, 2010 by angel flores*

**7th grade**

if 60 grams of potassium chlorate is dissolved into 100cm3 of water at the temperature of 60 degrees celsius is the solution saturated unsaturated or supersaturated?

*Friday, February 19, 2010 by sean*

**7th Grade Literacy**

What are 3 IMPORTANT characteristics that a class president needs? Please answer!!

*Wednesday, February 17, 2010 by Elizabeth*

**7th grade**

I find myself doing homework and i get it done (well sometimes) but i feel like i should be doing something else what can i do to keep concentrated on the homework?

*Tuesday, February 16, 2010 by Mikiya*

**7th grade Literacy**

What are the characteristics that make a good class president? Please answer!!!

*Monday, February 15, 2010 by Elizabeth*

**7th grade**

What term was used to describe the trading of slaves and goods to and from three continents? Eight(8)letters

*Thursday, February 11, 2010 by Lane*

**7th grade grammar**

Hey Ms. Sue, thank you for the website. It helped Juliana a lot. She thinks she can figure this out now. Thank you VERY MUCH!!!

*Monday, February 8, 2010 by Juliana's mom*

**7th grade science**

what wedsite can i find pictures and info. on a arab , chinese and native american astronomer from the 1054.

*Monday, February 8, 2010 by verone*

**7th Grade Math**

Stephanie plays basketball at her school. Her freethrow rate is 40%. She made 18 freethrows. How many attempts did she make? Can you please explain to me how to solve this? Is there a formula?

*Friday, January 29, 2010 by Thea*

**7th grade math**

Scott deposits $1,000 in an account that earns 5% simple interest. What will the account be worth after two years?

*Thursday, January 28, 2010 by Anonymous*

**7th grade science**

what type of muscles make up the majority of mucsles in your body ? (please no websites only answers)

*Monday, January 25, 2010 by mary*

**7th grade math**

what is the ratio of a triangle that is 6cm on one side,and 10cm on the other side,and 8cm on the last?

*Thursday, January 21, 2010 by eric*

**7th grade**

A Pyrotechician is working on a new fourth of July rocket. He is using a highly reactive metal when burned. What can he use to lower the reaction rate????

*Thursday, January 14, 2010 by Anomynous*

**7th grade**

describe the cultural exchange between Native americans and europears (social studies)

*Tuesday, January 12, 2010 by liame*

**7th grade**

describe the cultural exchange between Native americans and europears (social studies)

*Tuesday, January 12, 2010 by liame*

**7th grade**

what is the perimeter of the 6 by 6cm square joined to an 8 by 8cm square

*Monday, January 11, 2010 by Taylor*