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Posts by ellie

Total # Posts: 345

math
-Write the arithmetic sequence 21,13,5,-3... in the standard form: a_n= -a_n=a_1+(n-1)d--so a_n=21+(n-1)-8 *a_n=-168-8n why isnt this right?

math
Determine the seating capacity of an auditorium with 10 rows of seats if there are 10 seats in the first row, 16 seats in the second row, 22 seats in the third row, 28 seats in the forth row, and so on ???

social studies
thanks so much i found the answer

social studies
p.s. i forgot to put remains in the oraginal question.

social studies
i mean why cant we find the remain off the Spanish missions left.

social studies
why we can't find many of the Spanish missions from this period in Florida?

math please please!
Is this correct? Write an explicit and recursive formula: -5,-4,-3,-2,-1... explicit: -5N+1 recursive:An-1+1

math
-2x^2<30 1/abs value(11-9x)=6 Please show me how to do these two!!

Science
Which moon would look the brightest from jupiter and why?

Social Studies (France and nuclear arms)
follow up question: what are some reasons that france have the right to nuclear arms? i know that in general it's for security and power but i don't know the specifics...... security, it's not like they have any threats right? and power.. im not sure what to say ...

japan
shukudai しゅくだい 宿題

Social Studies (France and nuclear arms)
what are some reasons that france have the right to nuclear arms? i know that in general it's for security and power but i don't know the specifics......

Social Studies (France and nuclear arms)
can anyone educate me about why france should have the right to nuclear arms?? and be specific about what the arms and rights are? please please please! i need to argue about it. thank you!

science
What is the unit for magnetic circuit?

maths
9 hours

social studies
Does apartheid still exist in some ways in South Africa? Explain.

social studies
What needs to take place to bridge the economic gap between whites and blacks in South Africa?

science-urgent
i still don't get how they're different. What are 4 differences between them?

science-urgent
What are differences between Continental Drifts and Plate Tectonics? I need at last 4 for each. Please help its urgent!!!!! Thanks a bunch! Ellie

Math
Ok we are doing distributive property in math and I'm so confused on some of the problems. the problems are: 9+(x-4) 5-4x-5/-4 4(3x-2y)-3(4x-3y) 7(r+s)-(r-s) 3y-2(x-2y) Thank you so much for your help. Ellie

4th grade English
No

4th grade Math
That means you have to multiply the numbers. The product is what you call the answer.

Chem
what product could you see in a flask when you cobined copper and sodium. basically what is the name for copper and sodium when combined

Math
What represants 5yards

ecology
Thanks!

ecology
Describe the abiotic conditions in a chaparral ecosystem? where is this ecosystem located? thanks!

science
How does a chemical beome neutral?

science acids
you were a big help thanks again

science acids
how come bile from your digestive system is acid [how does this occur ] ? thanks 4 the help

French
you are perfectly right

Trig
Find all x and y between 0 and 2pi so that the equation is ture -2 cosx -i sin y = 2 sinx +i i am also having trouble with this one Simplify the power of i i to the 39th power

human life
If you still don't know the answer just g.O.o.g.L.e it and you'll get it!Or ask in W (Y)ahoo! answers

chemistry
yh you are doing grt

Science 8th grade
it 's glucose

Geometry
11.312

Math-measurement
What is the official name of our system of measurement in America? All I ever hear about is the metric system, but I don't know what ours is called. Thanks

acids and alkalis
i.e 1-6 acid 7 neutral and numbers after that are alkalis

acids and alkalis
it becomes an acid due to which colour it turns when adding universal indicator

maths
How to calculate the mean number of threatened fishes, where total number of fishes is 29300 and number of threatened fishes is 1173. Hmmmm. you have one data point, that is, 1173 fish are threatened. The mean of one number is that number. Is there something else here? Thats ...

math,algebra
20% of $30 =30 * 1/5 = $6

the big idea of energy
if you know what the big idea of energy is please can you tell me?? i will tell you stuff about magnesium burning =] thanx xD

More Physics
The diagram below indicates three positions to which a woman travels. She starts at position A, travels 3.0 km to the west to point B, then 6.0 km to the north to point C. She then backtracks, and travels 2.0 km to the south to point D. a) What is the total displacement of the...

Physics
How do I do these? A passenger at an airport steps onto a moving sidewalk that is 100.0 m long and is moving at a speed of 1.5 m/s. The passenger then starts walking at a speed of 1.0 m/s in the same direction as the sidewalk is moving. What is the passenger's velocity ...

James T. Russell
I don't think so

Don't understand this Geometry question
Isosceles triangle XYZ is placed on a coordinate plane to be used for a coordinate proof. What should the coordinates of its vertices be? a. (-a,0), (0,0), (a,0) b. (0,0), (0,-a), (-a,0) c. (0,0), (0,a), (a,0) d. (0,0), (0,-a), (a,0) ??? 5 REASONS WHY SOCIAL STUDIES IS ...

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