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Posts by lucy

Total # Posts: 957

Math
If three teachers can grade 40 tests in 3 hours, how many hours will it take 12 teachers to grade 480 tests?

Math
Find the measure of triangle ADC if A is (3x+2) degree, B is (4x-24) degree, C is (2x+2) degree and D is x+10 degree

Social Studies
What effect did United States policy have on the Soviet Unions war in Afghanistan and why did Soviet troops finally withdraw from Afghanistan in 1989? A. With U.S. support, the Soviet Union defeated the Afghan rebel forces. B. During peace talks, Ronald Reagan convinced the ...

Statistic
Thank you

Statistic
15% of m&m's candies in a bag are yellow. If you randomly pull 3 m&ms of the bag what is the probability the first one is yellow and the next two are not? A. 11% B. 22% C. 67% D. 85% My answer is D. 1 - 15% =0.85. I think I'm doing it wrong

Statistic
I pick a. Is it correct? Which of the following measurements is likely to have the least variation (the smallest standard deviation)? a. The volume of liquid in a simple of unopened 2-liter bottles of sodas. b. The SAT scores of a class of graduating high school seniors. c. ...

Chemistry
We all take the same Chemistry class, we are not using different names. We've been using my computer and that's why. You can ignore whatever post you want, it's just sad that I relied on this website for help. To be mad because we supposedly change screen names is ...

Chemistry
After balancing the following redox equation(using small whole-number coefficients), add the coefficients of all species in the balanced equation. Bi(OH)3 + SnO2^(2-) ? Bi + SnO3^(2-) (basic solution) --- I separated the equation into two and i know the next step is to balance...

Math
For what value(s) of b, if any, will the function q(x) = (x^4)/2 +b*x^2 +32x-5 have a derivative of zero AND a point of inflection at the same value of x?

math
Santiago, a park ranger, was trying to estimate the number of catfish in a lake. He randomly caught 32 catfish, tagged them, and let them go. Six months later, he surveyed fisherman at the lake about how many catfish they caught that were tagged. His survey results showed that...

Calculus Question! ASAP!
Hello! I have this problem: x(dx)/sqrt(9-x^2) I was wondering why I can't use trig substitution and substitute sqrt(9-x^2) for sqrt(1-sec^2) and having: integral x = 3sin(theta) dx = 3cos(theta)d(theata) integral 3sin(theta)(3cos(theta))/3cos(theta) having the 3cos(theta) ...

Help! Calculus
I am so confused on how to solve this problem. I have it set up with y's on one side and x's on the other but I don't know what to do from there. Question: Solve the differential equation. The initial condition is y(0) = 1. ((x^2+1)^(1/2))(dy/dx) - (x/(2y)) = 0 y &...

Ap algebra
2+3X^2-X^3=0 by use quadratic formula. The answer of textbook is 3.19 So I solved and came out a wrong answer What I did factor out (-X+3)X^2+2=0 Then By quadratic formula, a=1,b=0,c=2. Thus I got sqrt(8)/2

Time Value of Money
Please help me with guidelines on what really is the first thing to do when answering this type of questions on this topic,what is the catch on these topics?

Managerial finance 4A
Mr Paul is identified three investment opportunities that he is considering.one is investment A that is expected to pay N$800.00 ayear for three years,followed by N$1000.00 per year for four years. it will pay N$2000.00 at the end of the eighth year. Investment B is expected ...

math
there are 32 students 12% got an A.How many of them got A's.i need help converting this percentage to a whole number please help

English
The movie called Curcible reveals the church and court both state that all liars will be damned, but only can tell who the real sinners are. What does that mean ? What are they trying to say ?

HELP!
thank you @pypski and @nadstar

HELP!
is is b

HELP!
Earth's inner core exists at temperatures as high as 7000oC. It exists as a _______ due to the _________. A) solid; high pressure B) liquid; high pressure C) solid; high temperature D) liquid; high temperature

HELP!
Which set of numbers is correctly ordered from smallest to greatest? A) 0.009, 0.0099, 0.0909, 0.099 B) 0.0099, 0.009, 0.0909, 0.099 C) 0.0909, 0.099, 0.009, 0.0099 D) 0.099, 0.0099, 0.009, 0.0909 Help ME!

Math
Which set of numbers is correctly ordered from smallest to greatest? A) 0.009, 0.0099, 0.0909, 0.099 B) 0.0099, 0.009, 0.0909, 0.099 C) 0.0909, 0.099, 0.009, 0.0099 Eliminate D) 0.099, 0.0099, 0.009, 0.0909

Math
thank yo

Math
Lisa descended 120 feet into a cave. She then climbed up 56 feet. If her starting point was 38 feet below sea level at the mouth of the cave, what is Lisa's elevation relative to sea level now?

Math
Thannk you!

Math
The approximate distance of the moon from Earth is 4 x 105 km and the average approximate distance from the Earth to Venus is 4 x 107 km. How much farther is Venus from Earth than the moon?

Math ratios
which is equivalent to 4/16 A. 2:4 B. 10:9 C. 10/24 D. 12 to 64

AP Language-Inductive/Deductive
These are pretty hard, at least to me. Please help me check my answers. 1. Most luxuries, and the so-called comforts of life, are not only indispensable, but positive hinderances to the elevation of mankind. With respects to luxuries and comforts, the wisest have ever lived a ...

Spanish 2 Present Subjunctive
Please check my answers. I know I'm missing accents. 1. Os recomienda que ___ otra llave de recepcion. a) pedis b) pidais*** c) piden d) pida 2. Which of the following sentences is correct? a) Es importante tu estudies mucho. b) Es necesario que hacer ejercicio. c) Es ...

science
what are the answers cant see them you need to put the answers

steve plz help me on my math
I got for distributive property i put: P=2(l+w)=2(13+7)= 40 inches. and for not using distributive property I put: P=2*L+2*W=2*13+2*7=40inches

steve plz help me on my math
Find the perimeter of a rectangular area with a length of 13 inches and a width of 7 inches using distributive property and not using it.

math
you take the difference of their ages, 20, away from the total of their ages, 50, (which leaves 30) and then divide the rest of the years between them, that's 15 each.

Math
1. The point c(x,y) is reflected over the x-axis. Use arrow notations to describe the original point and its reflection. a. (x,y) --> (x,2y) b. (x,y) --> (-x,y) c. (x,y) --> (-x,-y) d. (x,y) --> (x,-y) ** 2. What is the correct description for the translation of A ...

spainsh
What do you need help with, this is not a question its just words.

social studies
It is #2

Math
You want to buy three books that are on sale at 20% off. The original prices of the books are $2.50, $4.95, and $6.00. How much will you save?

Math iniqualties and versitiles
I think the answer to both would be that they used the inverse operation and used more numbers to get the answer that they got.

Science
chicken fingers

english
what are the layers of analysis for 'if i'll why hath it given me earnest of success?' from act 1 scene 3 MACBETH SHAKESPEARE. thank-you.

english
'Agape is the highest form of love' Give two arguments with counter arguments to show you have considered more that one point of view. I need help ASAP

Math
A 73?-ton monolith is transported on a causeway that is 2500 feet long and has a slope of about 2.2°. How much force parallel to the incline would be required to hold the monolith on this? causeway?

Chemistry
How many grams of ethanol must be added to 500.0 g of water to make a solution that freezes at 0.00 degrees fahrenheit? The molal freezing point depression constant for water is 1.86 degree celsius over moles.

School Talk
What happened to "School Talk?" That was kinda helpful.

Biophysics
Estimate the flow of oxygen into the cell through a side of the muscle cell squished up against the capillary. (give both moles/sec and # molecules/sec.)

Math
Please help me with this step by step show your work problem. |-4b-8|+|-1-b^2|+2b^3 (b= -2) My work |-4b-8|+|-1-b^2|+2b^3 |-4(-2)-8|+|-1-(-2^2)|+2(-2^3) |8-8|+|-1-4|-16 8+8+5-16 16+5-16 5 Could you check my work? If it is incorrect, could you show me the steps to correct it?

Physics
Find, to 3 decimal place, the frequency of the hour hand of a clock

Spanish 2
1. Which of the following is correct? a) Maria estaba cocinando cuando ella se cortaba. b) Maria estaba cocinando cuando ella se corto. c) Maria estuvo cocinando cuando ella se cortaba. d) Maria estuvo cocinando cuando ella se corto. 2. Which of the following is correct? a) Me...

geography
Clock

Math
Sketch the graph of a continuous function f that satisfies all the stated conditions. f(0)=0; f(2)=-2 ; f(4)=f(10)=-1;f(6)=0 f’(2)=f'(6)=0 f'(x)<0 throughout (-infinity,2) and (6,+infinity) f'(x)>0 throughout 2<x<6 f''(x)<0 throughout (4...

interior decorateor
Which of the following statements is correct regarding the design concept of emphasis? A. Focal points in a room's architecture must be emphasized with contrasting colors. B. A focal point can't be established in a setting where formal balance is used. C. A room ...

Music
Can anyone help me find guitar chords for Regina spektor' song a cannon?

ENGLISH
Like a wall

Physics
A 2.8 kg duck is swimming at 0.35 m/s and a 3.4 kg goose is swimming at 0.75 m/s. Which bird would make the biggest impact on you if it carelessly swam into you? Explain. I'm not sure where to start. Could I have some help please?

Physics
A 2.8 kg duck is swimming at 0.35 m/s and a 3.4 kg goose is swimming at 0.75 m/s. Which bird would make the biggest impact on you if it carelessly swam into you? Explain. I'm not sure where to start. Could I have some help please?

history
i think it is pretty accurate, im not 100% sure however as i was out of school the whole term we spent doing WW1 because of an injur

history
Hi, I have this history question on a past exam paper i'm confused about, and was wondering if you could help? The question: "I write from the battlefield of the Great Push with thousands of shells passing in a tornado overhead, and thousands of unburied dead around ...

Science
A 450-g block is attached to a spring of spring constant 45 N/m and is in simple harmonic motion on a frictionless surface with an amplitude of 7.5 cm. A second identical block, moving at 12 m/s in line with the spring, strikes the first one when the spring is at its maximum ...

Math
Three picture frames are on a dresser.two are shaped like squares and the other is a trapazoid. how many sides are there in the frames altogether? Please help today

Life orientation
discuss the contributing factors that lead to this issue

Maths
in a game you have to guess what a number is through some clues the clues you are given are the hundreds digit is twice as large as the thousands digit the ones digit is the largest the sum of the digits is 14 the tens digit is two less than the ones digit what is the number?

MATH
B)1

Chemistry
What is the pH of a 0.052 Mole solution of HCl?

Math 143
What is the probability of not rolling a number larger than 4 with a fair die?

Math
Using only sides that are whole numbers, name the dimensions of three rectangles that have perimeters of 14 units.

Algebra
arigato

physics
explain the physics concept to why a ship sounds when moving in water?

physics
explain the physics principle why the size of tree stem decreases upwards?

physics
state or law which explains why a ship can easily sink than overturn?

physics
why is it cold in winter and hot in summer basing on physics knowledge

mathematics
the age of jane and john add up to 25years.8years ago jane was twice as old as john.how old are they now?

physics
the age of jane and john add up to 25years.8years ago jane was twice as old as john.how old are they now?

Math
There are24 counters How many counter can you make and why

pre algebra
a community has 1316 females. if 47% of the community is female and 16% of all the females are left-handed, how many people are in the community?

Math
A shipping crate carrying e-readers has a length of 19 1/3 feet, a width of 7 2/3 feet and a height of 7 5/6 feet. What is the volume of the shipping crate. Please Help.........

Math
the carpenter will buy

History
What does this mean? "It is apparent to my mind that the President thoroughly believed the tenure of office act to be unconstitutional and void . He was advised by every member of his cabinet...... "This was a punitive statue. it was directed against the President ...

math
Mrs Smith is having a party . She has 24 students . She estimates each student will eat 3/8.How many pizzas should Mrs. Smith order?

ICT
log off personal accounts

ICT
List five precautions users should take to protect themselves and their files when they are using a cybercafé.

LA 1 QUESTION PLZ HELP ASAP
I think the answer is A)

Language
thanks smart you helped allot

Tenology
Answers are 1) d 2)b 3)a 4)b Just got 100%

ALgebra
Nfckg2495;

Science
heartworm is a type of worm that enters a dogs body through a mosquito bite. it produces offspring that lodge in a dogs arteries and food off of surrounding cells. which type of relationship is this a. mutualism b. predation c. commensalism** d. parasitism

math
Distributive property. Distribute 1.9b to the number is the parenthesis (3.2b+0.8)+1.9b 1.9b multiply 3.2b+1.9b multiply 0.8

US History
Thanks!

US History
William Penn found Pennsylvania for New England or New Netherlands? Thanks!

english
An imperative sentence is to a command as a declarative sentence is to a/an A. statement. B. wish. C. question. D. exclamation. my answer is D

english
i think it's c

english
(1) Jack had been without a car since Monday. (2) The car needed a new battery, and Jack was broke. (3) Although he was embarrassed, Jack called his mother. (4) He felt he had no choice. (5) Fortunately, his mom was happy to help out. (6) She said she had the money and could ...

Science
Why the átomo never seen before

Ciencias
ocasionalmente los hospitales tienen brote de infecciones por la bacteria estafilococos la cual reciste el tratamiento con antibiótico que una vez fuera efectivo. ¿cual es la explicación más aceptable para esta situación?

Ciencias
Porque el estafiilococo es resitente a los tratamiento con antibiotico

Social Studies, Ms. Sue, Reed, Check My Work
are these all right

math
when james planted a tree 5 m from a window the tree just blocked from view a building 50 m away if the building was 20 m tall how tall was the tree?

math
when james planted a tree 5 m from a window the tree just blocked from view a building 50 m away if the building was 20 m tall how tall was the tree?

Stats
The manager of Lone Star Restaurant believes that the average wait time of the Saturday evening meal is 30 minutes. To test this belief, the manager selects 50 customers at random and computes the average wait time to be 34 minutes. Assume a population standard deviation of 12...

English
Has anyone read "The Destructors" who can help me with a few questions? My questions are: The mood on "The Destructors" is best described as humorous horrific adventuresome cold In "The Destructors" Greene uses a lot of ___ in the boy's ...

Language Arts
NEVVERMIND ITS B

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