# Posts by jj

Total # Posts: 1,109

Math
Suppose scores on an IQ test are normally distributed. If the test has a mean of 100 and a standard deviation of 10, what is the probability that a person who takes the test will score between 90 and 110?

SOCIAL STUDIES
Thanks the summary was a great help!

SOCIAL STUDIES
Thanks for the link, however, It is very hard to understand. Do you know where I can find it in kids terms?

SOCIAL STUDIES
I am trying to understand what congress cannot do, but its confusing.

EARTH SCIENCE
No it is an oblate spheroid

EARTH SCIENCE
I need four reasons the layers of the egg compare to the earth. so I have three 1. The shell compares to the crust 2. The white compares to the Mantle 3. The yolk is the core Then they also want : describe two other ways the egg compares to the earth. Can't think of any ...

science
its a guess

Pre-Algebra
why is there those stupid spaces??????

social studies 11
what attitudes do you think contributed to support for the evacuation of japanese-canadians during world war II? Give evidence

algebra
yess

allright thanks so much!

At the age of 12 I had developed a great interest in the art of Acting. Acting has always been a passion and a part of me. What I like about acting is that you can go on a stage or in front of a camera without worrying about what people will think because chances are you'...

us history
I was working on a US History crossword worksheet titled The English Colonists Arrive. I am trying to find the answer to the sole right to trade in an area. This wksht is due tomorrow.

math
if rs=8y +4, st =4y,and rt=15y-9. find value of y. find rs, find st, find rt

math
if rs=3x+1, st=2x-2, and rt= 64. find value of x. find rs. find st.

math
find counterexample the quotient of two proper fractions is a proper fraction

Math
the number on the right of the other number is greater

Algebra
A PIECE OF TIN IS TWICE AS LONG AS IT IS WIDE. IT IS TO BE MADE INTO A BOX BY CUTTING 2 INCH SQUARES FROM EACH CORNER AND FOLDING UP THE SIDES . FIND THE DIMENSIONS OF THE PIECE OF TIN IF THE VOLUME OF THE BOX IS 320 CUBIC INCHES

..

Alegebra
Given the function K described by K(x)=x+16. find each following. K(0)=16 K(-13)=3 K(-14)=2 K(8)=24 K(c+17)=C+33 Please check this problem see if is right.

Math
If f(x) = 2 \ln(8 x+4\ln(x)) find f'(2)

CHEMISTRY
A titration of 15.0 cm3 of household ammonia, NH3, required 38.57 cm3 of 0.78M HCl. Calculate the molarity of the ammonia. PLEASE SHOW ME HOW TO SOLVE THIS. Thank you very much!

CHEMISTRY
Calculate the volume of 0.6M HNO3 necessary to neutralize 28.55 cm3 of 0.45M KOH. PLEASE SHOW ME STEPS SO THAT I CAN UNDERSTAND HOW TO SOLVE THIS PROBLEM. THANK YOU.

Chemistry (urgent!)
A titration of 15.0 cm3 of household ammonia, NH3, required 38.57 cm3 of 0.78M HCl. Calculate the molarity of the ammonia. Please show steps so that I may unders tand how solve this. Thank you

algebra
Find the slope, it it exists x+7y=14 x=7y/14=2 check this problem for me please

Alegebta
Find the slope if its exists Y=-7X+3 7x-4 x=11 Is this right.

Alegebta
y-5>-14 y=-5-14= y=9 is this right. 4x-12=3y 4x-12=3y I do not how to finish this could please help me

Alegebra
How did you get -1/7 I am still confuse

Alegebra
Find slope x+7 y=14 x+7y=14 x=2 check this problem see if I got it right.

algebra
8x-11 < -27= 8x+11< -27= 8x=ll-27 8x=-16 x=-2 Check this problem.

PHYSICS!
A projectile is fired with an initial speed of 32.5 m/s at an angle of 61.4° above the horizontal. The object hits the ground 7.55 s later. What is the absolute value of the difference in height between the launch point and the point where the projectile hits the ground?

PHYSICS!
A projectile is fired with an initial speed of 32.5 m/s at an angle of 61.4° above the horizontal. The object hits the ground 7.55 s later. What is the absolute value of the difference in height between the launch point and the point where the projectile hits the ground?

I realize this is very last minute. I wrote a 6-page history paper on the topic of civil rights and I want someone to read it over before 3pm tomorrow, if that's possible. thanks!

physics
Mercury orbits the Sun with an everage speed of 47,800,000 m/s. About how long does Mercury take to orbit the Sun? I'm quite confused.

do you know how to say I want to play in german please. answer it if you can.

mah
what is the roman numeral for 26? XVVI XXVI LVL XXIV

what is 150 plus 1000.

uh uh uh.....oh yeah. uh uh uh isnt a question.I was just borde.from Jj.

uh uh uh.....

jika sa bagit

cooking
how to make a ginger bread man

problem solving
If you toss a number cube 20 times could it land on six 20 times. why or why not.tell about it.

decimals
How would you say this decimal in word form? 2,537.581

Maths
2/3

I don't know too.

what is a car pool?

elementary ????
what about data line and graph.

fractions, decimals,and percents
What are some everyday uses of fractions, decimals, and percents? FIND TWO OR THREE USES!

fractions, decimals,and percents
What are some uses for fractions, decimals, and percents? FIND AT LEAST 2 AND TELL WHY!

its like hour our and butt but and buy and steal and steel and wok and walk.

what is the scrambled word for this oedown?

Math
the frog who moved to paris just so he could order french fries

are you drunk what are you talking about dude.

what is the synonym for brown?

Math
Number Sense: What number is 10,000 less than 337,676?

english
please paraphrases the following paragraphs: "Whenever we suggested any plan, there was shrinking-the odds were fearful. Our path was beset with the greatest obstacles; and if we succeeded in gaining the end of it, our right to be free was yet questionable-we were yet ...

Math
17 11/(12 ) ÷6 1/10

english
please help me fix the gramma, and give me some comment on the essay, what do i need to edit?? In the story of “The Sky is Gray”, the main character, James, takes the journey from the farm to the town with his mother. During the journey, he suffers many hardships, ...

French
Is there a site that gives the pronounciation for all verbs? and their conjugations? Thanks

acrostic poems
help me with an acrostic poem about the school

Math
start by treating the problem like it is a quadratic. Let u = x^2 u^2 - 6u + 5 Factors as: (u-5)(u-1) (x^2 -5)(x^2 -1) =0 Whenever there is = 0, Normally, you have to solve for x and not stop at the factoring step. Set each factor = to zero. (x^2-5)=0 or (x^2 - 1) = 0 x^2 = 5 ...

music
when was the Davul drum invented?

Chemistry DrBob
me thinks u right

Chemistry
2 H2S (g) + SO2 (g) <===> ƒnƒn3 S (s) + 2 H2O (g) 1) At 298 K, the standard enthalpy change, H¢X, for the reaction represented below is -145 kilojoules. (a) Predict the sign of the standard entropy change, S¢X, for the reaction. Explain the basis ...

Biology - oxidative phosphorylation
Some things I don't understand: If oxygen accepts electrons from the electron transport chain, how does it become a molecule of water? ie where does the hydrogen come from? In chemiosmosis, protons are pumped against their concentration gradient across the inner ...

English
Explain the metaphor of adam and eve sin?

math riddle ALGEBRA WITH PIZZAZZ

english
can someone proofread this for me and make comments.. thanks Compare and Contrast / A College Education Patrick Allitt maintains that Undergraduates should be able to Specialize and that liberal arts are a matter of choice for those undecided, but that specialization be ...

Social Studies
what did raffaello Santi effect the world with?how?pls help me its for my midterms!

Social Studies
What did Raphael Sanzio have effect on the world?Pls help!

pol. science
"The Bill of Rights was intended to limit the powers of the national government to infringe on the rights and liberties of the citizenry." Explain this statement and describe, showing a thorough knowledge of historic events, how the principles in the Bill of Rights ...

math
doesnt (-) make the numbder postive like (-10)=10 and (-7)=7 that's right

math
can someone check and see if i did this right An 800 g solution of acid and water contains 128 g of acid. What percent of the solution is acid? 100=128/800*100 128/800=6.25 6.25*100=625

Spelling/Analogy
inhibited is to qualms as a. retentive is to memories b. indiscrimative is to standards c. skittish is to reservations d. resolute is to misgivings

Calculus
related rates: a ladder, 12 feet long, is leaning against a wall. if the foot of the ladder slides away from the wall along level ground,what is the rate of change of the top of the ladder with respect to the distance of the foot of the ladder from the wall when the foot is 6 ...

english
That did not help in the least bit, thanks for nothing!

english
Hi for poetry i need to research futurism and the founder f.t.marinetti. the thing is i cant find any poems written by him, all i can find are his manifestos which are super long. so if u can help me find any poems written by him that would be awesome thanks :)

Physics
k= A(Y)/L MPa=Pa(1/1000)^2(mPa) K=4.4*10^5

Physics
A) 7.7*10^7 Pa

marriage of figaro
does mozart compose the music in the opera in such a way that he puts the nobility as above the peasantry?

Biology - Diffusion
I know diffusion is movement of matter from high to low concentration. Does that mean that it will try to make the molarity of both sides equal?

World History
The Mongols in india were foreigners who were also: A.) Confucians B.) Buddhists C.) Muslims D.) Christians

French
my teacher marked these phrases as wrong but i don't know what about them is wrong: 1. je revelerais sans prevenir 2. j'ai vendu mes robes plus jolies both of them need "un mot a ajouter"

history - greece
essay question is: the golden age of classical greece (500-323 BC) is the first great age of humanism in the evolution of western civilization. if this is true, how might we account for its development in the greek renaissance (800-500 BCE)? Show how the greek humanism has ...

13 and 15

FINANCE
yes

science
What are two chemical and two physical properties of water? Please help me. Thank you. physical properties: boiling point, freezing point,density, color, electrical conductivity chemical properties: reactivity with sodium. Reactivity and decomposition with electrictiy.

physics
we put 2 mirrors perpendicular to each other and then an object in front. the result is 3 images of that object. how does the middle image occur? The middle image appears directly behind the intersection of the two mirrors, and is a double-reflection off of two mirrors. There ...

Physics
for our lab, we had to fill a semi-circle plastic dish (with a scratch on one side) with water and find the index of refraction of water by putting a pin on one side of the dish, looking through the water, and put a pin on the other side of the dish to line up with the first ...

math (unit rate)
unit rate is like say you ate 3 pancakes for 6 dollars. the unit rate is 2 dollars a pancake

culture ethnics
how do you think an average american's perceptions of each group are created? Thank you for using the Jiskha Homework Help Forum. If I understand your question, most people tend to "stereotype" other ethnic groups. Often it is what they see in the movies, etc. (...

science science science science science science
b. because the gravity of the pull is between the moon and the earth.

MATH
What number is less than10^-8? a)0.000001 b)0.0000001 c)0.00000001 d0.0000000001 10^(-8) = 0.00000001 figure it out from there. hint: (c) = 10^-8

history-french revolution
This radical revolutionary was fatally stabbed by another revolutionary. A. Legislatvie Assembly B. Emigres C. San-culottes D. Left-wing E. Right-wing F. National Assembly G. Olympe de Gouges H. Maximilien Robespierre I. Guillotine K. National Convention L. Georges Danton ...

chemistry
.13

contine...
In the late eighteenth and early nineteenth century, women began to struggle the equality in the society. After the long struggle for women's equality in public, women finally pass the Married Women's Property Acts in 1882. It gave women the right to dispose their own...

During the eighteenth century and nineteenth century, Britain was undergoing many social problems. In the book of Frankenstein, Mary Shelly tried to show us the role of women during the time. Women during that time did not receive the fairness treatment as women today. They ...

help check grammars and comments, thank you
-identify a major social problem -analyze and comment upon the effects of the chosen social problem -use historical documents to analyze the effects of the chosen social problem during the time. (does my essay off topic?) During the eighteenth century and nineteenth century, ...

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