# Posts by Sarah

Total # Posts: 5,763

**EASY Math**

The equation V = -2000t + 20,000 describes the value in dollars of a certain model of car after it is t years old. If a car is worth $14,000, find the age of the car.

*March 28, 2016*

**Statistics**

How do I find a P VALUE given the Z statistic using the empirical rule? Doing this by hand

*March 28, 2016*

**Statistics**

How do I find a p value given the Z statistic using the empirical rule?

*March 28, 2016*

**Math**

The equation V = -2000t + 20,000 describes the value in dollars of a certain model of car after it is t years old. If a car is worth $14,000, find the age of the car.

*March 27, 2016*

**English grammar**

1. Some of the pie IS missing 2. All of the pies ARE missing

*March 27, 2016*

**Calculus**

Suppose you are in a room that is a*10 meters. You can walk normally along the "a" meter long wall at "s" meters per second and crab walk in any direction at 1 meter per second. You start at one corner of the room, walk normally along the wall of length &...

*March 25, 2016*

**Calculus**

Suppose x; y, and z are positive numbers that sum to 10. What is the largest possible value of xy + xz + yz? (a) First, suppose that z is a fixed parameter. Then we have to find nonnegative numbers x and y (depending on the fixed value z such that x+y = 10-z), such ...

*March 25, 2016*

**Public Speaking(actually check please)**

1. A - Passive Agreement with a Policy 2. C - Question of Value 3. C - Problem, Plan and Practicality 4. D - Reasoning These are the final and correct answers.

*March 24, 2016*

**Public Speaking(check)**

1. A - Passive Agreement with a Policy 2. C - Question of Value 3. C - Problem, Plan, and Practicality 4. D - Reasoning Final and Correct Answers

*March 24, 2016*

**STATISTICS PLEASE HELP**

An HR manager at a large agricultural equipment company is considering proposingputting the sales staff on 4 day - 10 hours/day work weeks, instead of their current 5day - 8 hours/day week. It is believed that this will decrease the amount of drivingthey must do during a ...

*March 24, 2016*

**Statistics**

What is the critical value in this question? Assume that we randomly sample 200 residents of Indiana and ask them if they favor having the government issue marriage licenses to same-sex couples. 104 say that the do; 96 don’t. Test at the 5% level whether the population ...

*March 24, 2016*

**math**

How can you find the volume of a rectanglar prism using a model?!!!

*March 23, 2016*

**chemistry**

3NO2(g) + H2O(l) → 2HNO3(l) + NO(g) How many moles of nitric acid are produced starting from 5.00 moles of NO2(g) and 2.00 moles of water? Please help,

*March 23, 2016*

**Chem**

How many oxygen atoms are present in 2.00 millimoles of H2SO4?

*March 22, 2016*

**magh**

suppose you put money into teo different bank accounts. In account #1 you deposit $500 and you will be earning 6% interest compounded quarterly. in account #2 you deposit $600 and you will be earning 5% interest compounded annually. Which statement below best describes the ...

*March 21, 2016*

**Chemistry**

When 28g calcium reacts with 25 grams oxygen, how many grams calcium oxide form? I have 2Ca+ 2O2= 4CaO its is not working. Stoichemistry. I have the Ca as the reactant that is limiting? Please help.

*March 20, 2016*

**Accounting**

use the following information to complete the partial worksheet for bills company

*March 17, 2016*

**math**

Find c and I. Choose the right answers. Hint: c = total of payments - amount financed Amount Financed (m) = $3,500 Number of Payments per year (y) = 12 Number of Payments (n) = 36 36 payments of $104.50 each. To the nearest penny, total interest(c) = $ To the nearest tenth, I =

*March 16, 2016*

**Health**

it could be either a or b is it or would it just be a

*March 16, 2016*

**math**

A shirt is on sale for $12.75.this is 15percent off the original price.what was the original price of the shirt?

*March 9, 2016*

**Math**

uh idk

*March 8, 2016*

**English**

I think its D I'm not sure

*March 8, 2016*

**English**

Roosevelt is arguing that journalists must only attack misconduct when they have valid proof. They must not dig just for the sake of digging; it is offensive to good Americans. Which statement most effectively argues against this claim? a) Even sensational journalism is ...

*March 8, 2016*

**math**

In the theory of relativity, the mass of a particle with speed v is m=f(v)=m01−v2/c2√, where m0 is the rest mass of the particle and c is the speed of light in a vacuum. Letting m0=1, find f−1(10). f−1(10)=

*March 8, 2016*

**Math**

A car fits onto a golden rectangle with a length of 12 ft. What is the cars width? Write your answer in simplified radical form and rounded to the nearest tenth of a foot.

*March 7, 2016*

**Statistics**

A bolt manufacturer is using a hypothesis test with α = 0.01 to see if the diameter of their 0.75 cm diameter bolts are being manufactured properly. The goal is to have the average bolt diameter be 0.75 ± 0.0075 cms.

*March 7, 2016*

**Statistics**

Drug clinical trials are analyzed using hypothesis testing methods. As we’ve discussed, the null hypothesis in the effective stage of such trials is that the drug being tested is ineffective. The alternative, of course, is that the drug is effective. Explain why such ...

*March 6, 2016*

**Statistics**

Recall that the power (1 – β) of a hypothesis test is the probability that we will reject the null hypothesis given that it is false; that is, the probability that we will correctly reject the null hypothesis. All other things being equal, which of the following ...

*March 6, 2016*

**College history**

The choice are A.) elementary school B.) Adulthood. C.) high school and D.) College That's why I'm confused I don't know if it's saying when it started or when it was mostly studied

*March 5, 2016*

**College history**

Social order and norms of behavior are often learned in what era or school time? I think it's either college or adulthood

*March 5, 2016*

**History**

A Story that contains little or no policy content and is not related to the days event but that commonly discussed popular personalities and is designed to draw greater viewer interest is what? I think is biased media coverage

*March 5, 2016*

**Science**

How does lustre affect the amount of heat being absorbed by a black can

*March 4, 2016*

**MATH**

The answers don't seem to be correct?

*March 1, 2016*

**MATH**

Suppose f(x)=3x−2. Then f(1) = f(t) = f(x2) = f(f(x)) =

*March 1, 2016*

**math**

25?

*March 1, 2016*

**math**

Let f(x)=6x−1 and g(x)=3−x2. Evaluate the following: 1. f(g(0))

*March 1, 2016*

**English II**

what was the correct one?

*March 1, 2016*

**Math**

A cheese pizza costs $5. Additional toppings cost $1.50 each. Write and graph an equation in two variables that represents the total cost of a pizza.

*February 29, 2016*

**Math 7B**

It was 1. A 2. A

*February 29, 2016*

**Math 7B**

A bag contains 4 white, 3 blue, and 5 red marbles. 1. Find the probability of choosing a blue marble, then a red marble if the marbles are not replaced. a. 5/44 b. 15/35 c. 2/3 (i pick this) 2. 1/15 2. Find the probability of choosing two white marbles in a row. a. 1/11 b. 1/9...

*February 29, 2016*

**Art 6B**

It was D

*February 29, 2016*

**Art 6B**

Ok thank you

*February 29, 2016*

**Art 6B**

For years, community art was created by a professional for the enjoyment or education of a public group. how did the definition change in the nineteenth century? a. community art was now also exibited in museums. b. community art was now also created to spark a revolution. c. ...

*February 29, 2016*

**Music**

What's the scale of the G?

*February 28, 2016*

**chemistry**

what would be observed when combining an aqueous mixture of: potassium carbonate and hydrochloric acid, zinc chloride and silver nitrate, magnesium chloride and sodium hydroxide, ammonium nitrate and sodium hydroxide?

*February 28, 2016*

**chemistry**

1.what are the functions of pH?

*February 28, 2016*

**Biology please assist**

1. Where is pH found? 2.what is the function of pH? 3.what principle guides the phenomenon of pH? 4.what is acid rain ?how is it related to pH values?

*February 27, 2016*

**finance**

A 10-year bond has a coupon rate of 7% annually and a principal payment of $1,000.00. Other similar bonds are paying 9% annually. To determine the value of this bond you must:'

*February 27, 2016*

**Writing**

Why is it hard to write? I've always had trouble with it, I thought that by now I would've gotten better at it, but unfortunately, I'm even worse than before.

*February 26, 2016*

**Writing**

Help, please!!!! I need to write a paragraph How do I write a good one? What types of paragraphs are there?

*February 26, 2016*

**History**

What led to the fall of the Roman Empire in Western Europe, specifically in terms of political instability, economic and social problems, weakening frontiers, and the split of the empire. This is a study guide question. I just need some help figuring out a good response to ...

*February 25, 2016*

**Physics**

The projectile launcher shown below will give the object on the right an inital horizontal speed of 9.40 m/s. While the other object will be dropped with no initial speed. The objects are initially 114 cm above the ground. What will be the difference in the speeds of the two ...

*February 24, 2016*

**English**

Might something as this... A thesis statement: Scientific advances do have an enormousness repercussion which leads humanity to its darkest fears and anxieties.

*February 22, 2016*

**English**

Help, Please! I don't quite understand what is asking in this assignment (Essay) Task: Write an essay that compares Frankenstein and his creation to a modern zombie story with the focus on how a monster might be used as a metaphor for science or scientific advances and/or ...

*February 22, 2016*

**English**

Okay, but each one of them: 1 Frankenstein 2 Zombie, will have its own body paragraph or not?

*February 22, 2016*

**English**

Help, Please! I don't quite understand what is asking in this assignment (Essay) Task: Write an essay that compares Frankenstein and his creation to a modern zombie story with the focus on how a monster might be used as a metaphor for science or scientific advances and/or ...

*February 22, 2016*

**COLLEGE HELP LEASE PLEASE !!!!!!!**

I know but someone told me that there a tuitions for different majors I don't see that @ mercy college

*February 22, 2016*

**COLLEGE HELP LEASE PLEASE !!!!!!!**

Mercy college is what im talking about

*February 22, 2016*

**COLLEGE HELP LEASE PLEASE !!!!!!!**

Is graduate tuition is tuition for graduate school? I want to become a nurse. Graduate tuition Nursing $828.00 per credit But here the tuition is $17,166 The annual total list price cost to go to Mercy was $31,928 I'm sooo confused please help. Does it cost more than $31,928?

*February 22, 2016*

**LOGS**

The decibel level of a sound is given by dB=10log(EE0), where E0=10−12wattsm2 and E is the intensity of the sound. (a) Find the intensity of a 80-decibel sound. E= watts per square meter. (b) How many times more intense is the sound from (a) than a 50-decibel sound? A ...

*February 21, 2016*

**civic education**

Nigeria,Ondo State

*February 21, 2016*

**Science**

The half-life of randon-222 is 8 days. What was the original mass if 6 grams remains after 24 days?

*February 19, 2016*

**Chemistry**

A 10.0 L container contains 1.0 L of solution of a gas. Assume [gas]=1.5x10^-4 M in solution when 2 mol of gas remain in gas form. If 1 mol of gas is removed from the gas phase, what will be the new concentration of the gas in solution? What is the value of k?

*February 15, 2016*

**Math**

the amount (in milligrams) of a drug in the body t hours after taking a pill is given by A(t)=30(0.8)t . (a) What is the initial dose given? (b) What percent of the drug leaves the body each hour? Percent: (c) What is the amount of drug left after 9 hours? (d) What is the ...

*February 14, 2016*

**Health**

Answers: 1. B 2. C & D 3. C

*February 11, 2016*

**Physics**

The displacement of a block of mass 439g 439 g attached to a spring whose spring constant is 66N/m 66 N m is given by x=Asin(ωt) x A s i n ω t where A=12cm A 12 c m . In the first complete cycle find the values of x x and t t at which the kinetic energy is equal to ...

*February 10, 2016*

**Physics Grade 10**

The speed limit near a school is 30km/h but Joe Cool thinks he can ignore it. He is driving at 60km/h. To make matters worse, he is talking on his cell phone. Suddenly a child rides his bicycle out of school grounds and across the road on the pedestrian crossing. The maximum ...

*February 10, 2016*

**Personal learning plan (english?)**

What are some visual, auditory, reading/writing and kinaesthetic learning activities done in high schools?

*February 10, 2016*

**science**

Imagine a Rip van Winkle type who lives in the mountains. Just before going to sleep, he yells, "WAKE UP", and the sound echoes off the nearest mountain and returns 7.6 hours later. Find the distance between Rip and the imaginary mountain. I have this equation s= v(...

*February 7, 2016*

**physics**

A bullet of mass 0.08kg is fired horizontally into a 10kg block which is free to move. If both bullet and block move with a velocity of 0.6m/s after the impact, find the velocity with which the bullet hits the body

*February 7, 2016*

**English**

Please, I don't want to complicate my life, so, what's the best effective way to write a topic sentence for my body paragraphs?

*February 7, 2016*

**Calculus**

Using the definition of the derivative, find the equation of the tangent line to y=2x-1/2 at (1/2,-1) Thanks!!

*February 5, 2016*

**Physics- Help please!**

A guy riding a buffalo is chasing you at a top speed of 50 km/h, you are well ahead of the rider by 2 km, but your speed is only 20 km/h. How much time do you have to come up with a better plan?

*February 4, 2016*

**Physics**

A guy riding a buffalo is chasing you at a top speed of 50 km/h, you are well ahead of the rider by 2 km, but your speed is only 20 km/h. How much time do you have to come up with a better plan?

*February 4, 2016*

**Introductory Accounting**

The question is Burlin company starts the year with $188,000 in assets and $37,600 in liabilities. Net income for the year is $47,000, and no dividends are paid. How much is owners' equity at the end of the year? So what I thought what i would have to do is add the 188,000...

*February 3, 2016*

**Social Studies**

That is not a valid link

*February 1, 2016*

**Social Studies**

Hi, I'm having a really hard time understanding this concept. I know the answers because my teacher told us them but I don't know why they are the answers. Could you explain them please? 1. Professor Roth's rule is that any student who uses a cell phone in class ...

*February 1, 2016*

**science**

If exponential growth occurs in the population of a species of predator, the population of its prey will most likely decrease quickly. increase slowly. stay the same. experience exponential growth.

*February 1, 2016*

**Physics**

A 300g particle oscillating in SHM travels 11cm between the two extreme points in its motion with an average speed of 65 cm/s. a) Find the angular frequency b)The maximum force on the particle c)The maximum speed

*January 31, 2016*

**Science**

Describe one observation astronomers use to show that the universe is expanding

*January 31, 2016*

**Science**

-Explain how and when the universe formed according to the big bang theory? -Explain how and when our solar system formed? -Describe one observation astronomers use to show that the universe is Expanding?

*January 31, 2016*

**maths/physics**

4. Write down a diﬀerential equation to express each of the following relationships: (a) The rate at which the volume of a sphere changes with radius is proportional to the square of the radius. (b) Gravitational attraction F between two given bodies of masses m1 and m2...

*January 28, 2016*

**Physics (**

3. Terminal velocity of an object in freefall is given by Vt = root 2gMA/Cdñ , where g is gravitational acceleration,Cd is the coefficient of drag, p is air density, and MA is the ratio M/A of mass M to ‘downwards facing’ area A. For a falling sphere of radius...

*January 28, 2016*

**Physics (Gravitation)**

sorry, to correct the question. Ve= root 2GM/r Where G is the gravitational constant 6.8x10^-11, M is 10^22 + r^4 if possible, please can you provide a step by step answer to the question

*January 28, 2016*

**Physics (Gravitation)**

2. To leave the gravitational ﬁeld of a planet, a space rocket must be launched at an escape velocity of: ve =r2GM r , where G is the gravitational constant G ¡Ö 6.8¡Á10−11Nm2/kg2, M is the mass of the planet and r is its radius. Suppose ...

*January 28, 2016*

**ELA**

Explain 1 External and 1 Internal conflict From the book Found by: Margret Peterson Haddix. Make sure it includes: who it involves and how it is solved.

*January 25, 2016*

**math**

I am an even. number the sum of my digits equals 7. I am greater than 40 and less than 50. what number am I?

*January 25, 2016*

**Science**

1. Which of the following traits is acquired? A.) The number of petals that grow in a plants flower B.) the wing shape of a wild bird C.) The ability of some gorillas to learn sign language** D.) A cheetah’s ability to run faster than any other land animal 2. The height ...

*January 25, 2016*

**Help Please!!!!**

ELA.. English Language Arts

*January 24, 2016*

**Help Please!!!!**

Explain 1 External and 1 Internal conflict From the book Found by: Margret Peterson Haddix. Make sure it includes: who it involves and how it is solved.

*January 24, 2016*

**Help...**

What are the major stars of Gemini?? Name 4 of them... Explain the myth behind the constellation "the twin"

*January 22, 2016*

**Help....**

-list some of George Washington precedent -describe Thomas Jefferson achievement before becoming president of the United States - why was Lewis and clark expedition important?

*January 21, 2016*

**Science**

Thank you so much I got them all right!

*January 21, 2016*

**math**

Find the domain of the given function f. (Enter your answer using interval notation.) f(x) = 1/(x2 − 8x + 16)

*January 20, 2016*

**math**

A right triangle is drawn on a coordinate plane. Its base is the line segment between (2, 2) and (9, 2). The hypotenuse is a line segment that begins at (2, 2) and has slope 1.25. Find the coordinates of the third point.

*January 20, 2016*

**Precalculus**

Find every point on the horizontal line y = 5 that is a distance of 5 units away from the point (6, 1).

*January 20, 2016*

**French**

are these sentences correct J'ai mangé des pâtes delicieuses J'ai mangé de delicieuses pâtes

*January 20, 2016*

**Help....**

Should cellphone be used at school everyday!!! Why or why not...

*January 19, 2016*

**Physics (Feilds)**

Show that the gravitational potential at the surface of the Earth is -64 MJ kg-1, given the surface gravitational feild strength is 9.8 N kg-1 and the mean radius of the Earth is 6400 km.

*January 19, 2016*