Wednesday

August 24, 2016
**Spanish-8th grade**

We're learning direct object pronouns so I had to replace the "sellos" in the first sentence-did I do it correctly? Tú coleccionas sellos. Tú los coleccionas.
*Wednesday, October 12, 2011 by Marissa*

**8TH GRADE MATH**

IF C IS THE NUMBER OF CUPS THEN 1/2C CAN BE USED TO FIND THE NUMBER OF PINTS FOR 12 CUPS MY ANSWER 1(1/2C) X 12= (1X.5)X12 .5X 12=6 ANS 6 PINTS IS THIS THE RIGHT WAY TO WORD THIS PROBLEM
*Monday, October 10, 2011 by NICK C*

**8TH GRADE MATH**

IF C IS THE NUMBER OF CUPS THEN 1/2C CAN BE USED TO FIND THE NUMBER OF PINTS FOR 12 CUPS
*Monday, October 10, 2011 by NICK C*

**science 8th grade**

I have toy with the density of 2.o g/cm3 ,I put it into tub with water density of 2.0 g/cm3 will the toy float or sink?
*Thursday, September 22, 2011 by J.a.y.*

**8TH GRADE MATH**

FOR EVERY TWO M & M PACKS YOU BUY YOU GET TWO FREE IF ONE M & M PACK COSTS 79 CENTS HOW MANY CAN YOU BUY FOR 6.00 DOLLARS 6.00 DIVIDED BY .79? ANS 6? OR 3?
*Thursday, September 8, 2011 by Nick C*

**social studies**

i need help with a U.S history question, how would i describe Roanoke? its an 8th grade U.S history question i need it FAST!!!
*Monday, September 5, 2011 by sam*

**8th grade math**

A 20 ounce bag of popcorn costs $2.80 at the movie theater, if the unit price remains the same, how much would a 35 ounce bag cost ? Please help me, I'm in math class and Im stuck.
*Friday, June 10, 2011 by Kelly*

**Spanish 8th grade-Could someone please check this**

Mexico DF is the word for Mexico City in Spanish I think that is false because they either say Mexico or el DF referring to Districto Federal, correct? They never say Mexico DF do they?
*Monday, May 23, 2011 by Rita Z.*

**Spanish-8th grade**

Could you check thee for me? Thank you 1. Say that you plan on going to the movies tomorrow night. Yo pienso ir a el cine mañana por la noche. 2. Say that you need to learn Spanish. Tengo que aprender español.
*Monday, May 16, 2011 by Christian*

**8th grade algebra: radicals**

please help me solve these 1. 2√5/8 + 4√3/8 - 1/2√68 2. √4k-5 +1=8 (the radical sign goes over 4k-5) 3. (x+4)*2 /3 =8 4. Write the value of the discriminant of each equation. Then use it to decide how many different real-number roots the equation has. x...
*Friday, May 6, 2011 by jenna*

**Spanish 8th grade-Please check answer**

Is this correct the way I answered this-I don't like onion cake so I'm telling them Sorry,but I don't like it. ¿Quieres comer pastel de cebollas conmigo? Lo siento pero no, no me gusta pastel de cebollas. Thank you
*Tuesday, April 12, 2011 by Melissa*

**Math 8th Grade**

Jane's garden is in the shape of a right triangle. One leg of the right triangle is longer than the other leg. The area of the garden is 63 square meters. What is the length of the longer leg?
*Wednesday, April 6, 2011 by Lily*

**Spanish 8th grade**

I have to write a sentence saying that I feel like doing some activity say playing baseball of football-it doesn't matter. We are suppose to use the tener form so I'm really confused. Thanks for helping. I thought it would Me gustaria(accent over i) jugar whatever but ...
*Tuesday, April 5, 2011 by Ellie*

**8th grade math**

The denominator of a fraction is 4 more than the numerator. If both the denominator and the numerator are increased by 1, the resulting fraction equals ½. What is the original fraction?
*Wednesday, March 30, 2011 by HELP *

**Spanish-8th Grade-Please check**

I have a question about the owrd cubiertos in Spanish. Does ths word include la servillete el cuchillo el vaso la cuchara el tendor OR is it just like the plate and spoon, fork, knife and NOT the vaso or servillete(napkin)? The word and transaltion is confusing me Thank you
*Tuesday, March 8, 2011 by Rachel*

**Geometry-8th grade**

In circle O, chords AB and CD are congruent. Ab measures 2x + y, while CD measures 16.5 Two other chords are congruent. GH equals x +2y and KL equals 13.5 I set them up like this 2x + y = 16.5 x+2y = 13.5 then I substituted-rewrote it x = 13.5-2y Then substituted 2(13.5) + y...
*Monday, March 7, 2011 by Anna*

**Geometry-8th grade**

In circle O, chords AB and CD are congruent. Ab measures 2x + y, while CD measures 16.5 Two other chords are congruent. GH equals x +2y and KL equals 13.5 I set them up like this 2x + y = 16.5 x+2y = 13.5 then I substituted-rewrote it x = 13.5-2y Then substituted 2(13.5) + y...
*Monday, March 7, 2011 by Anna*

**8th grade math**

the first side of a triangle measures 3 cm longer then the second side the third side is 4cm shorter then twice the second side the perimeter is 31cm. how long is each side?
*Monday, March 7, 2011 by Evan*

**U.S.History- 8th grade**

Could someone help me with this question? Which of the following groups of workers lived in poverty? nurses unskilled workes technicians immigrants I'm torn between unskilled workers and immigrants
*Thursday, March 3, 2011 by Rachel*

**8th grade science**

answer yes or no to weight, velocity,speed,& mass. 2 identical planes taveling @ 300 km/hr in opposite directions both have the same: weight-yes, velocity-no, speed-yes, mass-yes. velocity is a no, correct?
*Sunday, February 20, 2011 by Roy S.*

**8th grade science**

Why can high blood viscosity have negative effects? Also, name the medical condition that people can develop with high blood viscosity.
*Thursday, February 17, 2011 by stacy*

**8th grade science**

On one of my tests they are asking me if Symboin pandora has a symbotic reletionshio with the Norway Lobster. In my lesson the answer is yes but with the NORWEIGAN lobster. Is this a typo or are the two lobsters the same lobster but with different names? I am soooo.... ...
*Monday, February 7, 2011 by Erica*

**math**

The question that have is to simplify and write the answer in exponential notation using positive exponents 2 to 4th power x 2 -2 These are my choices a 4 to the 8th power b 2 to the 8th power c 4 to the 2nd power d 2 to the 2nd power
*Saturday, February 5, 2011 by Jimmy*

**8th grade science**

I need help figuring out this on a food web. It goes from a flower to a butterfly to a frog to the bird to a coyote. Now I have to label them. I got them all however i do not know what the frog and bird is. HELP!! :-)
*Tuesday, February 1, 2011 by Lina*

**8th grade science**

Can a secondary consumer be eaten by another secondary consumer? Thanks! :-)
*Tuesday, February 1, 2011 by Lina*

**8th grade Algebra**

Marianna's rectangular garden is 15 yards long and 10 yards wide. She wants to stretch a wire for hanging lights from one corner of the garden to the opposite. About how long should the wire be?
*Monday, January 31, 2011 by Elizabeth*

**8th grade Algebra**

Sharon and her camping group hiked 6 miles due north, stopped for lunch, and then hiked 8 miles due west, stopping at ther campsite for the night. What is the straight line distance from their original starting place to the campsite?
*Sunday, January 30, 2011 by Elizabeth*

**math**

Ok, the problem says: a Middle school has 125 6th graders, 150 7th graders, and 100 8th graders. Which statement is NOT true? a. the ratio of 6th graders to 7th graders is 5 to 6. b. the ratio of 8th graders to 7th graders is 3:2. c. the ratio of 6th graders to students in all...
*Tuesday, January 18, 2011 by panda*

**8th grade Math**

Hi I need help with my math problem. It is: Name the function rule from the table given. Table- X= Y= -4 4 -2 2 0 0 answers: y = -x y = -4 y = 2x y = x I do not get how to solve this problem!
*Thursday, January 13, 2011 by Lina*

**8th Grade Chemestry**

Helping my child study. Are there any online guides that can help me teach how to predict the products of a reaction. i.e. _ Ag(NO3)+ _ CaCl2 yields Really want to be able to teach my child how to do this rather than have the answer. Thanks
*Sunday, January 9, 2011 by Stephen*

**8th Grade Chemestry**

Helping my child study. Are there any online guides that can help me teach how to predict the products of a reaction. i.e. _ Ag(NO3)+ _ CaCl2 yields Really want to be able to teach my child how to do this rather than have the answer. Thanks
*Sunday, January 9, 2011 by Stephen*

**8th Grade Chemestry**

Helping my child study. Are there any online guides that can help me teach how to predict the products of a reaction. i.e. _ Ag(NO3)+ _ CaCl2 yields Really want to be able to teach my child how to do this rather than have the answer. Thanks
*Sunday, January 9, 2011 by Stephen*

**8th grade history **

Can anyone help explain this? when the course of human events it becomes necessary for one people to dissolve the political bands which have connected them with another and to assume among the powers of earth the separte and equal stations to which the laws of nature and of ...
*Tuesday, December 14, 2010 by Courtney*

**8th grade math**

Can you please check my answer? A spherical balloon has a volume of 268 cubic cm. If more air is pumped in so that its radius is 3 times as long, what is its new volume? My answer: 2,412 cubic cm
*Monday, December 13, 2010 by Elizabeth*

**8th grade math**

Greta is designing a page for the yearbook and needs to know the area of her 8 in. x 10 in. picture after she crops it. If she makes the length and width of the picture 5/8 of the original, how does the area of the picture change?
*Monday, December 13, 2010 by Elizabeth*

**8th grade**

When a truck pulls a trailer, the trailer and truck accelerate forward even though the action and reaction forces are the same size but are going in opposite directions. Why don't these forces balance each other out?
*Thursday, December 9, 2010 by Anonymous*

**8th grade**

An alloy of metals is 25% copper .Another alloy is 50% copper. How much of each alloy should be used to make 1000grams of an alloy that is 45% copper?
*Thursday, December 9, 2010 by Jake*

**8th grade math**

Matt has twice as many quarters as dimes in his coin collection. If the dimes and quarters together total $9.00 how many of each kind of coin does he have?
*Tuesday, December 7, 2010 by Anonymous*

**8th Grade Math**

Can you please check my answer? An American football field is a rectangle 120 yards long (including both end zones) and 53 1/3 yards wide. What is the area of an American football field? my answer: 6360 square yards
*Sunday, November 28, 2010 by Elizabeth*

**8th grade math**

there are 3500 species of bees and more than 600,00 species of insects. how many insects are bees. write an inequlity.
*Saturday, November 20, 2010 by Anonymous*

**Math**

The 8th grade class is taking a field trip to a concert. Your bus averages 40 mph in the heavy traffic driving to the concert and 60 mph returning home. The total travel time is 2.5 hours. How far away is the concert? How long did it take to get to the concert?
*Tuesday, November 16, 2010 by Lady*

**8th grade science**

1.) How does reading across a periodic table compare and contrast with reading down a group on the periodic table?
*Monday, November 15, 2010 by jess*

**8th grade science**

1.) How does reading across a periodic table compare and contrast with reading down a group on the periodic table?
*Monday, November 15, 2010 by jess*

**8th grade science**

Peggy is runnig around the school track at a constant speed. The track has two straight stretches on the sides and two curved stretches at either end. Where on the track does Peggy experience balanced and unbalanced forces? Explain your answer.
*Thursday, November 11, 2010 by Juan*

**8th grade science**

Peggy is runnig around the school track at a constant speed. The track has two straight stretches on the sides and two curved stretches at either end. Where on the track does Peggy experience balanced and unbalanced forces? Explain your answer.
*Thursday, November 11, 2010 by Juan*

**8th grade math**

According to the U.S. Census Bureau, in 2009 men comprised an estimated 93.2% of the veterans in the United States. What is the number of women veterans in the United States in 2009? Express your answer to the nearest whole number.
*Wednesday, November 10, 2010 by Anonymous*

**8th grade math**

A company reported that it made a profit of 8% as a percentage of sales and that its sales revenue was $25,000. How much profit did the company make? my answer: $2,000
*Monday, November 8, 2010 by Elizabeth*

**8th grade math**

A company's cost of doing business in a recent month was $18,000. Their revenue on sales for that month was $27,000. What percent profit as a percentage of sales did the company earn? my answer: 33 1/3%
*Monday, November 8, 2010 by Elizabeth*

**8th grade math**

Can you please check my answer? Marcia wants to make muffins and needs 3/4 cup of a cup of sugar. She discovers, however,that she has only 2/3 of a cup of sugar. How much more sugar does she need? my answer: 1/12 of a cup
*Monday, November 8, 2010 by Elizabeth*

**8th grade Math**

Can you please check my answers? Wally ordered a pizza. He ordered 4/9 of the pizza with sausage, 1/5 of the pizza with extra cheese, and the rest of the pizza with bell peppers. How much of the pizza had bell peppers on it? My answer: 29/45 of a pizza
*Monday, November 8, 2010 by Elizabeth*

**Math 8th grade algerbra**

a cylinder has a radius of 3cm and a length of 10cm every dimention of the cylinder is multiplied by 3 to form a new cylinder how is the ratio of the volumes related the ratio of corresponding dimensions? how would i do this?
*Wednesday, October 27, 2010 by Courtney*

**Language Arts 8th grade**

Archaic-that which has ceased to be used except for special purposes as in poetry or church ritual some words like thou are archaic list as many words that you can think of that would be considered archaic. i cant think of anymore please help!
*Wednesday, October 27, 2010 by Courtney*

**8th grade**

Please help me how you get the answer. PLEASE I NEED HELP. A triangle sail has a perimeter of 25 m. Side a is 2 m shorter than twice side b, and side c is 3 m longer than side b. Find the length of each side. Thank you ver much for helping me
*Wednesday, October 27, 2010 by Glenda*

**8th grade**

when a truck pulls a trailer the trailer and truck accelerate forward even though the action and reaction forces are the same size but are in oppsoite direction. Why don't these forces balance each other?
*Monday, October 25, 2010 by Kevin*

**8th grade**

mr. macho ate 125 hotdogs over a five day peroid each day he ate seven more hotdogs than the previous day. how many hot dogs did he eat on the first day.
*Sunday, October 24, 2010 by bill*

**8th grade math**

The equation d=3.5t + 50 represents the distance in meters,d, that a cyclist is from his home after t seconds. Which pair of values represents a points on the graph of this equation? Explain your answer. (10,85) (0,0) (3,60.5)
*Wednesday, October 20, 2010 by john*

**8th grade**

Ryan left musuem and drove south. Gab left 3 hrs later driving 42 km/h to catch up to him. After 2 hrs gab finally caught up. find Ryan's averae speed?
*Friday, October 15, 2010 by nancy*

**8th grade**

Sam Squeeze has 10 quarts of a drink that is 60% organge juice. how much pure orange juice must he add to get a drink that is 75% orange juice?
*Tuesday, September 28, 2010 by Anonymous*

**8th grade**

Sam Squeeze has 10 quarts of a drink that is 60% organge juice. how much pure orange juice must he add to get a drink that is 75% orange juice?
*Tuesday, September 28, 2010 by Anonymous*

**8th grade**

Find the number of Calories in a grapefruit and an orange. (1) An orange has 15 more Calories than a grapefruit. (2) Twenty oranges and ten grapefruit have 1800 Calories.
*Monday, September 27, 2010 by Jacqueline*

**8th grade math**

my project is to complete the October calendar, using the following variables in algebric expression to represent each day in the month. Each expression must include all four variable using each variable exactly one. a=1 b=2 c=3 d=4
*Monday, September 20, 2010 by Tee*

**8th grade**

Dimensions of a paper cup. The volume of a paper cup, shaped like a circular cone is 30pie cubic centimeters. The radius of the top of the cup is 3 centimeters. What is teh height of the cup?
*Wednesday, September 15, 2010 by Chris Molle*

**8th grade,math/probability**

i really need help on this,and i need an answer quick as possible! >< what is the probability of picking a white sock and then a brown sock from a sock drawer,if it contains 10 whites,5 browns,and 8 multi-colored socks?
*Tuesday, August 31, 2010 by Luuka*

**8th grade math**

The area of Manhattan Island is 641, 000,000 square feet. According to legend, the Indians sold it to the Dutch for $24. Estimate the area that was purchased for one cent.
*Thursday, August 26, 2010 by Shaun*

**8th grade math**

a bank contains 35 nickels, dimes, and quarters. There are four more dimes than quarters and twice as many nickels as quarters. How many of each coins are in the bank?
*Wednesday, August 25, 2010 by Toph*

**8th grade**

A leaky faucet fills a 100 millimeter cup in 10 minutes. 1.how much water is wasted in a day?a week?a non leap year? 2.How long does it take to waste a kiloliter of water? (hint:1 kiloliter=1000000 milliliters)
*Thursday, August 19, 2010 by timmy*

**8th grade**

robert has a piece of twine 3/4 yards long. he needs a piece of twine that is 2/3 of this length. how long of a piee of twine does robert need?
*Tuesday, August 17, 2010 by natalie*

**8th grade**

Right triangle ABC is similar to triangle XYZ because angle B is congruent to angle Y. If angle C equals 27°,what is the measure of angle Z?
*Wednesday, June 23, 2010 by Anonymous*

**8th grade**

how to make a double line graph to show air/water temperatures.mon.air-92 water-68tues.air-94 water-69 wed.air-88 water=70,thurs. air=85 water=72 and friday air=96,water=72
*Wednesday, June 9, 2010 by will*

**8th grade**

okay, heres the deal tomorrows my english exam in which i need to write a DESCRIPTIVE paragraph. i reaaaallllllly need a BROAD topic to write about, anyone got any ideas?
*Tuesday, June 8, 2010 by Amanda*

**Science- 8th grade**

What type of sand/rock is Malibu Beach made of and where did that sand originate?? I've been searching this for a while, but the only results I've gotten were for Beach Hotels.
*Thursday, June 3, 2010 by Ceci*

**algebra**

A plumber needs 4 sections of pipe 2and 7/8 feet long. Can this be cut from a 12 ft. section? If so, how much pipe will be left over? If not, why not? I came up with yes, you will use 11 1/8th amount and have a section of 1 and 1/8th left. Is this correct?
*Wednesday, May 26, 2010 by anonymous*

**English: Plagiarism, Clichés**

Is a Cliché phrase considered Plagiarism? (the author is dead more than 390 years ago.) Is it okay to use it in a writing piece or poem? Should/will it be penalized or will you be given punishment if only used in 8th grade? Thanks
*Sunday, May 23, 2010 by Christopher*

**Drug Abuse**

My 8th grade daughter is doing a poster for her 4-H poster project on Hooked on fishing not on drugs. And her topic is How do drugs effect others? Can you help her with some ways that drugs effects a drug abuser's family and friends?
*Sunday, May 16, 2010 by Momof8*

**english 8th grade PLEASE HELP!!!**

How can you identify a verb/verb phrase, and how can you tell if it is present, past, future, pres. perf., past perf., future perf.?
*Tuesday, May 4, 2010 by May *

**8th grade**

Is -7*10^11 in scientific notation? If not, write it in scientific notation.
*Wednesday, April 28, 2010 by Logan*

**8th grade Physics**

Explain whether the photons emitted by a bright light bulb are more energetic than those emitted by a dim light bulb of the same color. How does the color of the light bulbs determine the amount of energy of the electromagnetic waves?
*Tuesday, April 27, 2010 by Renee*

**Math distance rate 8th grade test tmr!**

Two planes left Seattle at the same time, both traveling due east. One had the rate of 185 mi/h and the other had a rate of 225 mi/hr. After how many hours were they 220 miles apart?
*Wednesday, March 24, 2010 by sky*

**8th grade science**

a 10-liter sample of one type of crude oil has a mass of 8.20kg. What i the density? If this oil spilled on the ocean's surface, would it sink or float? explain answer in terms of density.
*Wednesday, March 24, 2010 by sam*

**8th grade science**

A glass of water is placed on a very sensitive scale and several antacids tablets are dropped into the water. The weight of the glass and its contents is less after the tablets dissolve than before the tablets dissolved. Tell how matter is conserved ? Please help! I couldn'...
*Tuesday, March 16, 2010 by Michaela*

**Math - average grade**

Does anyone know how to calculate average point grade? I have the following data: grade D - 2 students - 4,9 percent grade C - 6 students - 14,7 percent grade B - 12 students - 29,2 percent grade A - 21 students - 51,2 percent What is the average grade? This is NOT my homework...
*Wednesday, February 17, 2010 by refy*

**8th grade Math**

In a quadrilateral , angle CAB is divided into two comgruent angles by line AD. What is the measure, in degrees of angle DAB. Angle B and D are 90 degrees. angle C equals 45 degrees.
*Tuesday, February 16, 2010 by Outcast*

**8th grade science**

Please show me how to solve this problem. A person wearing a shoulder harness can survive a car crash if the acceleration is less that -300 m/s2. How far must the front end collapse if it crashes while going 101 km/hr? Thanks.
*Sunday, February 14, 2010 by mike*

**8th grade algebra**

the length of a rectangular garden is 5 feet longer than its width. The garden is surrounded by a 2-foot-wide-sidewalk. The sidewalk has an area of 76 square feet. Find the dimensions of the garden
*Thursday, February 11, 2010 by val*

**8th Grade Algebra Confusion**

Hi. I am starting a new section in Algebra, and I thought I understood it. But when I went to the back of my book to check the answers, they were way off. We are dividing and simplifying radical expressions and equations.
*Wednesday, February 3, 2010 by Celeste*

**8th grade**

a rabbit can climb one or two steps at a time on a ten step staircase, but he never goes back down. In how many different ways can the rabbit climb a flight of ten steps
*Tuesday, January 26, 2010 by rob*

**8TH GRADE MATH**

thank you so much, ms sue! may i ask another question? If 6 oz cost 3.25 20 oz cost 5.59 36 cost 6.59 how much would 12oz, 26 oz, 48 oz cost? Thank you so much! maribeth
*Sunday, January 24, 2010 by maribeth*

**8th grade**

how does placement of spacers between the eye bolt and magnets affect the strenght of the magnets pull on the eye bolt?
*Saturday, January 23, 2010 by renee*

**8th grade**

Laura is training her pet white rabbit, Sugar, to climb up a flight of 25 steps. Sugar can hop up one or two steps at a time. She never hops back down, only up. How many different ways can Sugar hop up the flight of steps? PLEASE HELP!!!! I'M TOTALLY LOST!!!
*Monday, January 18, 2010 by Lola*

**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 by Mary*

**8th grade**

Ms Pecho currently owes $637.50 in simple interest on a loan of $2500 at an annual interest rate of 17%. How long has she had the loan. This is his problem and I have no clue how to help him but I do know the answer he came up with is 18.77. That seems wrong to me.
*Thursday, December 31, 2009 by Rose*

**8th grade history**

Name three reasons people left England to come and colonize the New World. They wanted riches, land, and place to start a new life. What happened to the people of Roanoke? They disappeared, and no one knows why or where they went. Are my answers right? I'm not very good at...
*Sunday, December 13, 2009 by Sammi*

**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 by Zach*

**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 by Jay*

**8th grade**

I know the answer but how do i get my starting line ? Vancover recivers 3 times the amount of snow as toyko does together they recive 80 cm i can see that vancover will be 60 cm and toyko 20 cm but i do not know how to do it weird eh ?
*Tuesday, December 1, 2009 by Scott*

**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 by Nick*

**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 by Dorthea*

**11th grade**

The students of litchfield High school are in grades 9,10,11,12. Of the students , 1/4th are in 9th grade, 1/3rd are in 10th grade, 1/6th is in 11th grade and there are 300 in the 12th grade, how many students are there all together?
*Friday, November 6, 2009 by stefanie coplin*

**physical science 8th grade**

Copper has 2 known isotopes: ^63CU atomic mass= 62.9298 and ^65 CU atomic mass=64.9278. The average atomic mass of copper is 63.546 amu. Calculate the fraction(percent) of each of the 2 isotopes of copper
*Wednesday, November 4, 2009 by help*

**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 by Owen Leigh*