Tuesday
May 3, 2016

# Posts by Sophie

Total # Posts: 440

sooo will it be the same if you had 16 2/7 -10 ______________ you would have to change 10 into 9 and and put 7/7 so it would be like this 16 2/7 -10 7/7 but you would have take something to make it a problem
October 29, 2010

how do you solve a problem when you have one whole # with a whole # and fraction. this is subtracting ex: 16 -10 2/7 ________________
October 29, 2010

math
11/850 b/c 13/52*12/51*11/50
October 27, 2010

english
why is Theodor a hero and why is he so important
October 18, 2010

Calculus
Find the derivative by the limit process. 6/√(8x)
October 15, 2010

Calulus
Consider the following function. f(t) = 3t2 − 3 (a) Find the average rate of change of the function below over the interval [3, 3.1]. (b) Compare this average rate of change with the instantaneous rates of change at the endpoints of the interval. (at t = 3) (at t = 3.1)
October 15, 2010

calculus
The tangent line to the graph of y = h(x) at the point (-6, 9) passes through the point (6, 2). Find the following values. (a) h(-6) (b)h '(-6)
October 15, 2010

Physics
an canoe is 5.67 in m how long in cent?
October 14, 2010

l=32 l=2 (e) l=5 (e) l=(2xe)+(5xe)=L e=4 m=8 o=20
September 30, 2010

calculus
Determine the equation of a curve in the xy-plane that passes through the point (0, 1) and has the slope x2 sin 4x at any point (x, y) on the curve.
September 29, 2010

math
3x³=90
September 16, 2010

writing
I have to write a thesis statement on a belief i have that have changed and why
July 20, 2010

General Chemistry
What happens to the rate of evaporation of a liquid after… a. a decrease in temperature b. an increase in the surface area of a liquid exposed to air c. an increase in the intermolecular forces
July 14, 2010

math
This is a place for homework help, not for chatting and randomness.
June 1, 2010

science
The greatest velocity a falling object reaches is called its what?
May 6, 2010

chemistry
how many grams of copper hydroxide can b prepared from 2.7g of copper (II) nitrate and excess sodium hydroxide?
March 23, 2010

chemistry
how many grams of copper hydroxide can b prepared from 2.7g of copper (II) nitrate and excess sodium hydroxide?
March 23, 2010

Math
set S is composed of the square of every element of the set {-5,5}. what is S?
March 21, 2010

Chemistry
im not quite sure what to do with this problem... the info I have: -balanced equation= (CuCl2*2H20)=>CuCl2+2H2O -initial mass of copper compound: 0.94g Q: use stiochiometry to find the theoretical yield for the mass of copper (II) chloride we also used 30mL of water in our ...
February 28, 2010

How many day in a leep year?
February 26, 2010

no, mainly igneous rocks come from lava.
February 22, 2010

art
i am researching a piece of art work by frida kahlo and i need more infomation about he work, any sujestions?
February 4, 2010

calculus
Which has more area, the region in the first quadrant enclosed by the line x+y=1 and the circle x^2+y^2=1, or the region in the first quadrant enclosed by the line x+y=1 and the curve sqrt(x)+sqrt(y)=1? Justify your answer.
January 21, 2010

Algebra
what is "5x + 7 = 22" simplified? x
January 12, 2010

social studies ww1
what was united states policy toward the war when it broke out PLEASE HELLLLP
December 1, 2009

social studies
world war one
December 1, 2009

social studies
why did the nations of Europe go to war
December 1, 2009

science
a teacher does 140 J of work in 20 s. How much power did he use?
November 16, 2009

science
in the course of a short race,a car does 50,000 J of work in 7 s. What is the power of the car during a race?
November 16, 2009

science
a libraian lifts a box of books that weighs 93 N a distance of 1.5 m. How much work does he do?
November 16, 2009

science
as you push a lawnmower the horizontal force is 300 N. If you push the mower a distance of 500 m, how much work do you do?
November 16, 2009

science
dr.bob222 i dont get it can u give me the answer
November 15, 2009

science
how much power, in watts, is needed to cut a lawn in 50 min if the work ivolvled is 100,000 j
November 15, 2009

science
how much power, in watts, is needed to cut a lawn in 50 min if the work ivolvled is 100,000 j
November 15, 2009

science
suppose you are pulling a wagon with the handle at an angle. How can you make your task easier?
November 15, 2009

social studies
why did the us want to build a canal across panama 2 how did the us gain control of the panama canal zone 3 how did the people of panama feel about us control of the canal zone why 4 what agreement did the us make with panama in 1977 5 what are the countries of central America
November 9, 2009

english
were public places segregated in 1948
November 9, 2009

science
what is orbital motion and lubricant
November 8, 2009

science8 intergeted
what is lubricant and orbital motion
November 8, 2009

chemistry, science
Carbon is also removed from the atmosphere during the process of weathering. carbon dioxide combines with water to form carbonic acid. this reacts with calcium silicate (in rocks) to produce calcium ions, bicarbonate ions and silicon dioxide (silica) the chemical equation for ...
November 2, 2009

physics
1008176.54J
October 28, 2009

General Chemistry
Question 1: In the Balmer-Rydberg equation, what value of m is used to determine the wavelengths of the Balmer series? m=? Question 2: List a possible set of four quantum numbers (n,l,ml,ms) in order, for the highest energy electron in gallium,Ga.
October 25, 2009

science
what factors affect the friction forces between two surfeces 2a what is the law of universal gravitation
October 20, 2009

science
1a-b)what are the four types of friction what factors affect the friction force between two surfaces
October 20, 2009

Math Data Management
In how many ways can the 12 members of a volleyball team line up, if the captain and assistsant captain must remain together? Thank you in advance.
September 21, 2009

French
Some interesting facts about the euro tunnel, the eurostar and the shuttle?
September 16, 2009

english
thank u
September 15, 2009

english
Ihave just read me it is a disaster,sorry for the errors
September 15, 2009

english
Dear americans,I would like to retranscribe me the speech of obama in high school in Norfolk (video is on youtube) please make it for a French desperate person (it is my first year at high school) what methods shall I be able to use to understand English better?
September 15, 2009

tech
in tech we are reasearching inventors chefs and designers i chose to research, Gordan Ramsey i have all ready found out most of my info which i need to collect but i am having trouble with, .who is his inspieation. and .why did he become a chef.
September 4, 2009

Trig problems
Part 1) Evaluate tan 7.5 Part 2) Evaluate exactly cos (-(45pi(4)))
August 14, 2009

French 2 help!
okay, thanks, it was right
August 13, 2009

French 2 help!
Jen e veux pas savoir ____ est arrive. a. ce qui b. ce que Je crois _____, je vois, C'est tout. a. ce qui b. ce que I think 1 is a and 2 is b... am I right?
August 13, 2009

Math
In a random sample of 30 tires of the same type, it is found that the average life span is 36,200 miles with a standard deviation of 3800 miles. Find the interval about the sample mean such that the probability is 0.77 that the mean number lies within the interval. a. 35,402-...
July 3, 2009

Math-stats
thanks
July 2, 2009

Math-stats
The playing times of 20 songs on a top-hits radio station are recorded in the chart below. Playing Time (minutes:seconds) 3:32 3:24 2:54 3:07 4:52 3:45 2:39 3:09 3:34 3:26 3:35 4:17 4:03 3:52 5:10 4:59 3:07 4:00 3:07 2:56 In a histogram of this data, which bar would have the ...
July 2, 2009

Math
Use the first five terms of the trigonometric series to find the value of sin pi/12 to four decimal places. a. 0.2618 b. 0.2588 c. 0.7071 d. 0.2648 I got B, is this right?
June 27, 2009

math
I get confused with negatives sometimes! thanks though!!
June 24, 2009

math
Simplify: (-1-2i)+(4-6i) I get 3-8i and 5-8i... confused, which one is it?
June 24, 2009

sience
does anyone know if, orange juice is a pH indicator??
June 22, 2009

sience
ok thanks!! you have been a great help [x]
June 22, 2009

sience
i need to make a p.h indicator in sience but i cant think of any other than.. tea bags, some sort of juice and.. red cabbage anyone got any sujestions?
June 22, 2009

Spanish
Come up with a question to these answers. Si, de Alicante. No, es médica. No, es argentina.
June 18, 2009

Math
Write the standard form of the equation of the parabola whose directrix is x=-1 and whose focus is at (5,-2)? a) (y+2)^2 = 12(x+2) b) y-2 = 12(x+2) c) x+2 = 1/12(y+2)^2 d) x-2 = 1/12(y+2)^2 I get A and D? confused!
June 17, 2009

Math
oohh yes i did! thanks!!
June 16, 2009

Math
oh, so it is C?
June 16, 2009

Math
For 4x^2 - 4xy + y^2 = 4 find θ, the angle of rotation about the origin, to the nearest degree? a) 27° b) 63° c) 333° d) 307° I got A, is this right?
June 16, 2009

Algebra
inead help on math homwork
June 14, 2009

Math
oh! thanks for your time!
June 9, 2009

Math
tan^-1(1/2)=x=.463648 tan^-1(2/3)=y.588003 x+y+pi/2 = -z=2.62245 z=-2.62245 cos (z) = -.868243 and tan a= -1/2 tan b= -2/3 tan (a+b)=(tan a +tan b)/(1-tan a.tan b) so tan (a+b)= -7/4 sec^2 x-tan^2 x=1 so sec (a+b)=√(1+49/16) =√(65/16) (a+b)=1/sec (a+b) so cos(a+b) ...
June 9, 2009

Math
ohh okay thanks!
June 9, 2009

Math
If α and β are two angles in Quadrant II such that tan α= -1/2 and tan β = -2/3, find cos(α+β) Work: cos(α+β) = [ 1 - (tan α)(tan β) ] / [ 1 + (tan α)(tan β)] cos(α+β) = [ 1 - (-1/2)(-2/3) ] / [ 1 + (-1/2)(-...
June 9, 2009

Math
thanks for checking (;
June 8, 2009

Math
Find the measure of the reference angle for 400 degrees. I did the work and got 40 degrees, is this right?
June 8, 2009

Math
Thanks for checking!
June 8, 2009

Math
Find sin(sin^-1 1/4) is the answer 1/4?
June 8, 2009

Math
never mind, i was right
June 3, 2009

Math
Write an equation in slope-intercept form of the line whose parametric equations are: x = (1/2)t +2/3 and y = t - 3/4. a) y = 2x - 7/12 b) y = 2x + 7/12 c) y = -2x - 7/12 d) y = -2x - 25/12 I think it is D.....?
June 3, 2009

Math
thanks for checking!!
June 2, 2009

Math
Find the ordered pair that represents the vector from A(-4.3,-0.9) to B(-2.8,0.2)? Then find the magnitude of AB. A. (1.5,1.1); 3.46 B. (-7.1, -0.7); 7.13 C. (1.5, 1.1); 1.86 D.(-7.1, -1.1); 7.18 I got C, is this right?
June 2, 2009

Math
okay thanks
June 2, 2009

Math
Find an equation of the line that bisects the obtuse angles formed by the lines with equations 3x-y=1 and x+y=-2. a. (3√2 +√10)x-(√10 + √2)y-2√10+√2=0 b. (3√2 - √10)x+(√10 - √2)y+2√10+√2=0 c. (3√2...
June 2, 2009

Math
oh okay, thought so thanks!
June 1, 2009

Math
Find the distance between P(-4,3) and the line with equation: 2x - 5y = -7 a. (14√29)/29 b. 0 c. (-16√29)/29 d. (16√29)/29 I got C but would it be positive, like D?
June 1, 2009

English
well you could do a little of both by saying a catchy sentence and then stating more of the facts
June 1, 2009

Math
no those are the options for sure :/
June 1, 2009

Math
it's B?
June 1, 2009

Math
Use a sum or difference identity to find the exact value of sin225° a. (-√2 - √6)/4 b. (√6 - √2)/4 c. (√6 + √2)/4 d. (√2 - √6)/4 is it A?
June 1, 2009

math
Yes thanks! I got sqrt10/2 also!!
June 1, 2009

math
I did the theorem and got 16/√10 ?
June 1, 2009

math
Find the distance between the lines with equations 3x-y=9 and y=3x-4 a. 5/4 b. (5√10)/2 c. √10/2 d. (13√10)/2 not too sure on this one!
June 1, 2009

Math
so would 2. be C as well?
May 29, 2009

Math
The paddle wheel of a boat measures 16 feet in diameter and is revolving at a rate of 20 rpm. The maximum depth of the paddle wheel under water is 1 foot. Suppose a point is located at the lowest point of the wheel at t=0. 1. Write a cosine function with phase shift 0 for ...
May 29, 2009

Math
thanks
May 29, 2009

Math
Write an equation of the tangent function with period (3π)/8, phase shift -π/5, and vertical shift -2. a. y=tan((8x)/3 - (8π)/15) -2 b. y=tan((8x)/3 + (8π)/15) -2 c. y=tan((16x)/3 +(3π)/80) -2 d. y=tan((8x)/3 - (3π)/40) -2 I think it is A... or B?
May 29, 2009

math
In triangle ABC, a=7.8, b=4.2, c=3.9. Find B a. 15.1° b. 148.7° c. 78.9° d. 16.2 ° It is D, right?
May 28, 2009

spelling
thank you
May 28, 2009

spelling
If i wanted to shorten the word phenomenal to phenoms would it be es or just s on the end.
May 28, 2009

1. Pages:
2. <<Prev
3. 1
4. 2
5. 3
6. 4
7. 5
8. Next>>