Tuesday
April 21, 2015

Posts by sally


Total # Posts: 1,004

Math
Solve this system that is represented by the following matrix. [1 -2 -2| -3 0 5 3| 13 0 0 1| 1] Write answer in (x, y, z)
April 8, 2015

chemistry cp
so it it letter c?
April 7, 2015

chemistry cp
The term formula mass is a general term that can be applied to both ionic compounds and molecular compounds because (a) ionic compounds exist as individual molecules (b) molecular formulas are always empirical formulas (c) not all formulas represent individual molecules (d) ...
April 7, 2015

business math
Anny invests $8,500, at 6% interest, compounded quarterly for 12 years?
March 31, 2015

Math
Juanita invests $3,500, at 8% interest, compounded annually for 4 years?
March 31, 2015

math
If Will gives Molly $9, he will have the same amount of money as her. If Molly gives Will $9, the ratio of the money she has to the money Will has will be 1 : 2. How much money does Will have in the beginning?
March 29, 2015

Chemistry
What will happen to the number of moles of SO3 in equilibrium with SO2 and O2 in the following reaction in each of the following cases? 2 SO3(g) equilibrium reaction arrow 2 SO2(g) + O2(g) ΔH° = 197 kJ (a) Oxygen gas is removed. increase decrease stay the same (b) The...
March 15, 2015

Child Development
5+5=10 10+10=20 20+20=40 1+1=2 !!!!!!!!!!!!!!!!!:) :) :) :) :) :) :) :) :) :) :) :) :) !!!!!!!!!!!!!!!!
March 11, 2015

MATH
AJOISRHJEIWHTIHWTPIRUHTEUIHTUIHTREIOGHGGFTGGFFGFGFGFGGRFGFOTOTOTOTOTOOTOTOTTOPTOTOTOOTOOOTOTTOOOTTOOOTOTOTTOVCB CVNCGN
March 11, 2015

math
Kim and Kent are on opposite sides of a canal, pulling a barge with tow ropes. Kim exerts a force of 50N at 20 degrees to the canal and Kent pulls at an angle of 15 degrees with just enough force so that the resultant force vector is directly along the canal. Find the number ...
February 24, 2015

math
(1,1) and (13,3) (0,4) and (14,0) What are the coordinates for the intersection of the two lines?
February 24, 2015

math
hakiim invested 15000 he put part of it in a term deposit that paid 4% per annum and the remainder in a treasury bill that paing 5% per annum after one year the total interest was 690 how much did hakiim invest at each rate
February 24, 2015

Physics
sorry as in P1=666400 Pa not 666400pa*6
February 19, 2015

Physics
Hi, just need a little help with this physics question please. A cylindrical tank of water is located 68m deep in water. An air lock at the bottome of the tank allows access. The sailor must wait while the air pressure in the lock is increased until it equals the water ...
February 19, 2015

physics
The water storage tank has a diameter of 0.5m and contains 150L of water. You find a small hole rusted in the base, with a diameter of 10mm. what is the velocity of the water flowing out of the hole? So, i feel like I need to somehow use both Bernoullis equation and continuity...
February 19, 2015

physics
The equation given is 2SO2(g)+O2(g)->2SO3(g), and if 224L/h of O2 (at standard temp and pressure) is consumed by the reaction, how much power is produced? I can't go further than P=Work/Time and Work=P times change in V I've tried 224x2-224x3/60^2 but that's not...
February 19, 2015

physics
Three charged marbles are glued to a nonconducting surface and are placed in the diagram as shown. The charges of each marble are q1 = 5.75 µC, q2 = 1.48 µC, and q3 = −2.47 µC. Marble q1 is a distance r1 = 3.00 cm to the left of the marble q2, while ...
February 13, 2015

math/algebra
Determine three consecutive odd integers such that three times the middle integer is seven more than the sum of the first and third integers.
February 6, 2015

math
Below are two pairs of points. A line goes through each pair of points. What are the coordinates for the intersection of the two lines? Show your work. Pair 1 (1,1) and (7,7) Pair 2 (0,8) and (8,0)
February 4, 2015

Math
Thank you!
February 2, 2015

Math
Mistyped it should say "10 spoke english & french" not "10 spoke english & frnech"
February 2, 2015

Math
In a class of students, 80 spoke English, 110 spoke spanish, 100 spoke french, 50 spoke english & spanish, 30 spoke english & french, 20 spoke french & spanish, 10 spoke english & frnech, but no spanish. How many spoke spanish & french, but not english? The answer is 0. I was ...
February 2, 2015

statistics
A professor gave an aptitude test to a class of psychology students and computed the mean, median, and mode for the test scores. Which of the following statements cannot be an accurate description of the scores? -All of the above statements are false. -The majority of the ...
February 1, 2015

Physics
An object fired at an angle of 31.9° above the horizontal takes 2.55 s to travel the last 15.5 m of its vertical distance and the last 10.5 m of its horizontal distance. With what speed was the object launched? (Note: This problem does not stipulate that the initial and ...
January 27, 2015

Physics
You are practicing throwing darts in your dorm. You stand 3.21 m from the wall on which the board hangs. The dart leaves your hand with a horizontal velocity at a point 1.94 m above the ground. The dart strikes the board at a point 1.73 m from the ground. a) Calculate the time...
January 27, 2015

Physics
How much work is it to push a box (mass 120 kg) up an incline (angle 16 degrees with the horizontal) that is 9.6 meters long, if the coefficient of kinetic friction between the box and the incline is 0.5?
January 27, 2015

stats
A jar contains 7 black balls and 25 red balls. You take 2 out without replacing them. Find a)the probability of drawing 2 red balls in a row, b) the probability of drawing a red ball, then a black ball, c) the probability that the two balls will be of different colors
December 18, 2014

chemistry
How much energy (in kilojoules) is needed to heat 4.00g of ice from -11.0∘C to 21.5∘C? The heat of fusion of water is 6.01kJ/mol, and the molar heat capacity is 36.6 J/(K⋅mol) for ice and 75.3 J/(K⋅mol) for liquid water.
December 13, 2014

Physics/Calc
A ball is thrown vertically upward from a cliff with a speed of 20 ft/sec. The ball hits the ground at 140 ft/sec. How high is the cliff? v'+-32
December 12, 2014

Physics/Calc
A ball is thrown vertically upward from a cliff with a speed of 20 ft/sec. The ball hits the ground at 140 ft/sec. How high is the cliff? v'+-32
December 12, 2014

MATH!
the cost of a midnight madness movie ticket, is reduced by 2/5 of the original cost, to a cost of 3/5c. which expression is equivalent to the new cost? A)c-3/5c B)1-3/5c C)1-2/5c D)c-2/5c
December 10, 2014

Civics
Good job
December 8, 2014

Algebra
A fuel storage tank has one supply pump and two identical outlet pumps. With one outlet pump running, the supply pump can increase the fuel level in the storage tank by 8450 gallons in 30 minutes. With both outlet pumps running, the supply pump can increase the fuel level in ...
November 25, 2014

Chemistry
How do I balance CuSO4 + NH3 + H2O = (NH4)2SO4 + Cu(NH3)4(OH)2 Thank you!!!
November 24, 2014

physics
consider the 666 N weight held by two cables shown below. The left hand cable and tension 530 N and makes an angle of theta2 with the ceiling. The right hand cable had tension 390 N and makes an angle of theta1 with the ceiling. What is the angle theta1 which the right hand ...
November 14, 2014

Math
sin theta = 8/17 and theta is in the second quadrant. Find sin(2theta),cos(2theta),tan(2theta) exactly sin(2theta) cos(2theta) tan(2theta) sin(2theta) would it be 2 x (8/17) cos(2theta) would be 2 x (15/17) tan(2theta) would be 2 x (8/17 divided by 15/17) is this correct? I ...
November 14, 2014

Math
Hi! Could someone possibly help me solve this?; log2(x+4)=log2(x^2+2). For my answer, I got "All Real Numbers" or x=0 but I'm not sure if that's right. Thanks a bunch!
November 12, 2014

Math
Hi! Could someone possibly help me solve this?; log2(x+4)=log2(x^2+2). For my answer, I got "All Real Numbers" or x=0 but I'm not sure if that's right. Thanks a bunch! :)
November 11, 2014

BTEC Level 3 Business
I need to find out what information the finance and marketing departments need and use within a business.
November 10, 2014

chemistry
Nitrogen dioxide abstracts with water vapor to produce oxygen and ammonia gas. If 12.8 grams of nitrogen dioxide reacts with 5.00 liter of water vapor at 375 degrees celisus and 725 tore, how many grams of ammonia can be produced? Use an ice table.
November 2, 2014

chemistry
give the specific heat for aluminum is 0.900 J/g*c how much energy is required to raise 25.0 g of aluminum from 20.0 to 75.0
November 2, 2014

Physics
The colors we see when looking at an object depend on the _________. A) density of the object B) amplitude of the light we see C) frequency of the light we see D) mass of the object we are looking at I think it is A
November 1, 2014

physics
Due to friction with the Earth's atmosphere, a large static electric charge could build up on our plummeting asteroid fragment. Would you expect our fragment to generate a magnetic field? Explain why or why not.
October 24, 2014

Language Arts
Why does the author of "Always to Remember" discuss Maya Ying Lin's background? A. To show that she experienced hardships B. To appeal to Chinese-American readers C. To show its influence on her design D. To show her disintrest in architecture
October 23, 2014

physics
A rifle with a mass of 12 g, traveling with a speed of 425 m/s strikes a large wooden block, which it penetrates to a depth of 15 cm. determine the magnitude of the retarding force that acts on the bullet.
October 22, 2014

math word problems
PLEASE HELP MS SUE
October 22, 2014

math word problems
nilsa is working on a 60 minute math test. there are 20 questions on the test. if it takes her 20 minutes to complete 12 of the questions, what is the greatest amount of time on average she can spend on each of the remaining 8 questions.
October 22, 2014

English
I need to ask one question... Why Canada involved?
October 21, 2014

English
he federal government says Canada will start shipping its experimental Ebola vaccine to the World Health Organization on Monday. The government says in a release the Public Health Agency of Canada is supplying the vaccine to the UN body in Geneva in its role as the ...
October 21, 2014

Math 11
5km
October 20, 2014

English
It's like a format for answering short answer/essay questions g- general statement e- elaboration r- reference 1 r- reference 2 c- conclusion
October 20, 2014

English
I hope someone knows how to write a gerrc paragraph.. Anyways I need help for the reference part. Hence the word R, how do i show my point? I can explain the quote but I don't know the point. The general statement is, the author used a variety of humor to point the nature ...
October 20, 2014

Algebra
Using Cowling’s Rule what is the age of the child if the adults dose is 500mg and the child dose is 187 mg?
October 17, 2014

Chemist - Grade 9 - Urgent.
Predict the physical properties and relative reactivity of Ba and Sr Cs and Br ( elements from periodic table )
October 16, 2014

Grade 9 chemsitry
Please help.. it's urgent.
October 16, 2014

Grade 9 chemsitry
Predict the physical properties and relative reactivity of Ba and Sr Cs and Br ( elements from periodic table )
October 16, 2014

Sociology
Which of the following statements would be most likely? 1)Social class is defined by wealth & income alone. 2)Social class includes wealth, prestige,& influence. 3)Social prestige is directly related to economic status. 4)Life chances are equally available to all Americans.
October 16, 2014

immingration & crime
What impact do increase in immigration have on crime? 1)An increase in both crime and street gang membership 2)A decrease in both crime and street gang membership 3)An increase in crime but not in street gang membership 4)A decrease in crime but an increase in street gang ...
October 16, 2014

Minority Contract
The Disproportionate Minority Contract (DMC)mainly requires ______________. 1)the office of juvenile justice to rely primarily on self report data 2)each state to challenge inaccurate depictions of crime 3)the Department of Justice to reduce the number of incarcerated ...
October 16, 2014

Drug Law
The author argues that illegal use of____ highlighted the presence of racial discrimination in the criminal justice system. 1)crack & powder cocaine 2)pot & meth 3)crack & pot 4)pot & heroin
October 16, 2014

Sociology
Which of the following disadvantages built into the criminal justice system is not class based? 1) Jim Crow laws 2)Visibly crowed residential areas 3)An ability to pay bail 4)Racial profiling is the reason for African American pedestrian stops
October 16, 2014

Grade 9 Chemistry
which is more reactive k or ca? ( from periodic table.) when poured in water?
October 14, 2014

Chemistry
Predict the physical properties and relative reactivity of Rb, Cs, and Fr (From the periodic table)
October 14, 2014

math
1/2X+3=9 solve for x. I'm confused
October 13, 2014

STATS
In a normal distribution, approximately 34% of the scores are between the mean and +1 SD; an additional 34% of the scores are between the mean and –1 SD. So, in a normal distribution about 68% of the population (a little more than 2/3) will have scores are within 1 SD of ...
October 11, 2014

statistics
which of the following percentiles corresponds to the area beneath the normal curve from a z score of -1.00 to +1.00 a.98% b.34% c.68% d.100%
October 10, 2014

statistics
Correction On this semesters final exam, john scored 72 on his calculus exam, (class distribution (u=65, \?=3.57)\) ) and 53 on his statistics exam (class distribution :u=49, ?=2.04. Which exam should he get the better grade. z1=72-65/3.57=1.960 Z2=53-49/2.04=1.960
October 8, 2014

statistics
On this semesters final exam, john scored 72 on his calculus exam, (class distribution (u=65, \?=3.57)\) ) and 53 on his statistics exam (class distribution :u=49, ?=2.04. Which exam should he get the better grade. z1=72-65/3.57=1.960 Z2=53-49/3.57=1.120
October 8, 2014

Statistics
On this semesters final exam, john scored 72 on his calculus exam, (class distribution (u=65, \σ=3.57)\) ) and 53 on his statistics exam (class distribution :u=49, σ=2.04. Which exam should he get the better grade. z1=72-65/3.57=1.960 Z2=53-49/3.57=1.120
October 7, 2014

Math
Oh thanks
October 7, 2014

Math
Also how did it become 8 15/16? Wouldnt it become 8 14/16?
October 7, 2014

Math
Thanks ! :)
October 7, 2014

Math
Why did you change it to 44 24/16 If i may ask?
October 7, 2014

Math
At the back of the book it said it was 36 9/16
October 7, 2014

Math
A piece of wood is 8 and 7/8 in. long is cut a piece 45 1/2 in. long. If 1/16 is wasted for the cut, how much wood is left.
October 7, 2014

statistics
On this semester’s final exam, Susie scored 72 on her classics exam (class distribution: μ = 65, σ = 3.57) and 53 on her psychology exam (class distribution: μ = 49, σ = 2.04). For which exam should Susie expect the better grade? a. Classics b. ...
October 7, 2014

Geography
What do countries with large footprints have in common? Small footprints? I don't really understand .
October 6, 2014

math
Why is 5 to the negative 4 power= 1/5 to the fourth power?
October 6, 2014

English.
What is another strong way of saying : Yes, I would recommend this book to a friend.
October 5, 2014

Math 2--questions
6. 470
September 27, 2014

Math 2--questions
7. Find the sum. –14 + 7 + (–3) –24 –18 –10 *** –4 8. A scuba diver descends 350 feet and then another 120 feet. Express the diver’s final depth as an integer. –420 ft 420 ft ** –470 ft 470 ft
September 27, 2014

Check my answers? Math help.
Sorry. I left out an ption D on #4. Would the answer be 11? on four? 5. C or B?
September 27, 2014

Check my answers? Math help.
2. Write an integer to represent owing your friend $10. –10 *** –2 2 10 3. Write the sum as a product, then simplify the product. (–8) + (–8) + (–8) + (–8) ( 2(–8) + 2(–8) = –30 4(–8) = –32 **** 4(–8) = 32 5(–8...
September 27, 2014

Science
how did you get that? please explain as well. I'd appreciate it
September 23, 2014

Science
A piece of aluminum has a mass of 39.15g and a volume of 14.5cm cube. Determine the density of the aluminum. What would the density be of a much larger piece of aluminum? explain. I established the density of the al. is 2.7g/ cm cube. I dont get the second part of the question?
September 23, 2014

Math
5y^3 ( -x^4) When x is -2 and y is -1
September 23, 2014

Geography / English
So I would say ; Continents like Africa has lessened lives due to poor medical care and services compared to Canada ? I dont know if it was connected to the importance of the evidence.
September 18, 2014

Geography / English
So I have to write an essay how do i rate canada when compared to the rest of the world. On the sheet it shows you a set up on how to write it Introductory Sentence/ Thesis -In my opinion, canada is favourable compared to the rest of the world. Supporting Evidence - Canada ...
September 18, 2014

Geography
How would you rate Canada when compared to the rest of the world? Concepts like Primary School Enrollment, Life Expectancy, Population, GDP, HDI and etc;
September 18, 2014

Appreciation
I'm glad you do. :)
September 17, 2014

Appreciation
Hi Ms.Sue. I know this isnt a question but I want to thank you for helping me with questions I couldn't understand.
September 17, 2014

Algebra 1
find the product (2x+1)(2x-1)
September 17, 2014

Geography
What can we infer about a country based on its GDP? Why is the HDI a better way to compare countries than other indicators above e.g gdp, primary school enrollement etc;
September 16, 2014

Grade 9 Science
In each situation s below , it seems that a new substance may have been produced. Explain why each situation represents a physical change. a) A tailor makes a new suit out of a piece of fabric. b) A chef makes a salad out of lettuce, tomatoes and cucumbers. I really need ...
September 14, 2014

Science
So what would you find something in the house? Product Symbols Precaution One example would be appreciated
September 11, 2014

math 12
$identical\:squares\:are\:cut\:from\:each\:corner\:of\:a\:rectangular\:piece\:of\:cardboard,\:7\:cm\:by\:10\:cm.\:The\:sides\:are\:then\:folded\:up\:to\:make\:a\:box\:with\:an\:open\:top.\:If\:the\:volume\:of\:the\:box\:is\:25\:cubic\:centimeter,\:how\:long\:is\:the\:side\:of...
September 10, 2014

French
How do I say : I am going to wait for my friend to come? I am very stumped at this one.
September 9, 2014

French
Oh no I meant it to be seperate. My teacher said I have to make the sentence in present so would it be a) Je fini mon travail b) Je attends pour mon ami a venir?
September 9, 2014

French
How do you say I finish my chores and I wait for my friend to come?
September 9, 2014

French
How do you say. We sing at the concert? No google translate please..
September 9, 2014

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