# Posts by bob

Total # Posts: 3,255

**Math**

Let d(t) be the shortest distance between Earth and the nearest other planet as a function of time t (where t is in years and t = 0 is noon on January 1, 1000 A.D., say). Is d continuous? Why or why not?

**math homewok**

There are nine coins on the table , 5 nickels , 3 quarters and 1 dime. Tom , Bill and Drew each pick up three coins. Bill has 25 cent more than Tom. Drew has as much money as Tom and Bill together . What three coins Drew to pick up? my answer: Drew ===)2 quarters+i nickel Is ...

**math 7 grade**

x is defined as one more than the number of digits in the number x . For example , 1000 = 5. For what value of x wil x = x ?

**math 7 grade**

Mr. olsen has classified the charities to which he gives money to into 3 different groups. Each charity in the 1st. group will get $1 . Each charity in the 2 nd. group will get 9 times as much or $9 . Each in the 3 rd. will get 9 times as much as each in the 2 nd. groups or $...

**statistics**

28

**statistics**

47

**physics**

518.94 J

**Math**

A cattle train left Miami and traveled toward New York. 14 hours later a diesel train left traveling at 45km/h in and effort to catch up to the cattle train. After traveling for four hours the diesel train finally caught up. What was the cattle train's average speed?

**Physics**

89N

**math**

This website suks. My name is Bob, short for Robert, long for Bob.

**ap chemistry**

Carbon monoxide reacts with oxygen to form carbon dioxide by the following reaction: 2CO + O2 yields 2CO2 Delta H for this reaction is -135.28 kcal. If 811.7 kcal is released, how many moles of CO must have reacted? 1). 270.5 mol 2). 40.5 mol 3). 12.0 mol 4). 5.41 mol 5). 16.3...

**math**

i dont know

**Science**

dumbass

**Algebra**

"If 3 people can do a job in 5 days, how many days will be needed if 4 people do the same job?"

**physics**

In a Broadway performance, an 80 kg actor swings from a 3.75 m long cable that is horizontal when he starts.? At the bottom of his arc, he picks up his 55.0 kg costar in an inelastic collision. What maximum height do they reach after their upward swing?

**math**

i am a 3-digit number divisible by 3. my tens digit is 3 times as great as my hundreds digit, and the sum of my digits is 15. if you reverse my digits, i am divisible by 6 as well as 3

**SOC 101**

soc 101 In most developed nations health care is?

**physical**

this one up top is the wrong way of doing this problem

**biology**

what is the relationship between interactions and interdependence

**physics 100**

Bob, who has a mass of 60 , can throw a 800 rock with a speed of 26 . The distance through which his hand moves as he accelerates the rock forward from rest until he releases it is 1.0 . a) What constant force must Bob exert on the rock to throw it with this speed? b)If Bob is...

**science**

if 25 ml of sugar is mixed with 299 ml of water and then 50 ml of water is poured out, how much sugar remains in the 150 ml of wtare?

**statistics**

The HR department of an organization collects data on employees' age, salary, level of education, gender, and ethnicity. Which data is more likely to follow normal distribution? Why?

**Science**

How many grams of ammonium nitrate is equivalent to 1 gram of calcium nitrate

**7th grade masth asap hurry plz ms.sue somebody plz**

My gosh really Anonymous WOW what a freaking snitch she wasn't asking for the answer she was asking how to do it and you know what I'm guessing you Google searched the answer because why else would you be here and heck even if she was cheating i bet you she's ...

**chemistry**

37

**physics**

12.54

**physics**

If a car is traveling at a constant speed of 15 meters per second, goes off a cliff, and needs to land 100 meters from the cliff, how high is the cliff?

**math**

Suppose that you have $12,500 to invest over a 4 year period. There are two accounts to choose from: 4.5% compounded monthly or 4.3% compounded continuously. a. Write the formula for the first account’s compound interest for n compounding per year. b. Write the formula ...

**math**

The Concord Community Park Association receives a $10,000 donation from an anonymous donor who stipulates that before using the funds to improve the park, they must invest the money until it has doubled in value. The Park Association decides to invest the money in an account ...

**math**

China .8% Ethiopia 2.8%

**chemistry**

Nitric acid reacts with silver metal: 4HNO3 + 3Ag -> NO + 2H2O + 3AgNO3. Calculate the number of grams of NO formed when 10.8 g of Ag reacts with 12.6 g HNO3

**history**

What are three good points to talk about in a research paper about child labor in the 1800s? 10th grade level please.

**7th grade math help quick please**

you go to connctions academy cheater!

**pyshic**

A car has a mass of 1.35 × 103 kg. If the force acting on the car is 6.82 × 103 N to the east, what is the car’s acceleration? Answer in units of m/s2

**yolo**

gajkwh;reg

**physics**

a toy car runs off the edge of a table that is 1.225 m high. if the car lands .400 m from the base of the table (A) how long does it take for the car to fall and (B) what is the horizontal velocity of the car?

**7th grade math questions Scientific Notation**

GIVE ME A D E R P DERP!

**7th grade math - Scientific Notation basics**

HEY YOU GO TO CONNECTIONS ACADEMY! this is cheating

**Math**

6.00-4.00=2.00

**Finance**

65656

**math**

I am a number between 50 and 60.One of my factors is 28.What number am I?

**us history**

what do the following have in common? indentured servants indigenous slaves

**us history**

Which of the following is not like the other? Cortes, Pizarro, Champlain, and Ponce de Leon

**physics**

The pilot of an aircraft wishes to fly due west in a 42.7 km/h wind blowing toward the south. The speed of the aircraft in the absence of a wind is 204 km/h.

**chemistry**

what is the name of the compound C2H4?

**chemistry**

what is name of the compound P2S5? is it phosphorous pentasulfide?

**chemistry**

chemical formula for potassium hydrogen sulfide? is it KHS?

**Physics**

A duck has a mass of 2.8 kg. As the duck paddles, a force of 0.09 N acts on it in a direction due east. In addition, the current of the water exerts a force of 0.20 N in a direction of 47° south of east. When these forces begin to act, the velocity of the duck is 0.12 m/s ...

**Physics**

A duck has a mass of 2.8 kg. As the duck paddles, a force of 0.09 N acts on it in a direction due east. In addition, the current of the water exerts a force of 0.20 N in a direction of 47° south of east. When these forces begin to act, the velocity of the duck is 0.12 m/s ...

**History**

What is moral law? What is civil law? Contrast the both. can someone name me anything relating to those from current events or historical events?

**LA**

Why are you saying thank you?

**LA**

what links the subject of the sentence with a description of the subject?

**Chemistry**

A 0.41 g sample of limestone was dissolved in HCl and all the calcium in the limestone was converted to Ca2+(aq). The solution was treated with excess ammonium oxalate, (NH4)2C2O4(aq), and it was found that 3.0 g of calcium oxalate, CaC2O4(s) was precipitated. Calculate the ...

**history**

B is correct

**Social studies**

Why did mound builders build burial mounds

**Math**

ANSWER IT NOW

**Science**

thank you

**Science**

I need an acrostic for RESPIRATION. Please help!!

**physics**

In baseball, a pitcher can accelerate a 0.15 kg ball from rest to 99 mi/h in a distance of 1.4 m. What is the average force exerted on the ball during the pitch?

**chemistry**

1. From Thomson's work, which subatomic particle do you think he would feel are most important for the formation of compounds? Why? 2. Of the remaining two other kinds of subatomic particles, which do you think would take second place in importance? Why? 3. Give three ...

**Math**

Right answers ^

**Math Studies IB**

I am trying finding whether men or women have better memory. I would like to do a chi-squared test, how would i lay it out and What other sophisticated processes can i do?

**physics**

A vector has a magnitude of 17.6 cm and makes an angle of 150.0° with the positive x-axis. What are the x- and y-components of this vector?

**chemistry**

I am stuck in the following in my homework. BaC/2 and Na2CO3 turns different colors when the same indicator is added to each? Why does this happen? How is the ph of each of these different? I have tried on this one and cannot get it. Thanks for our help. Bob

**chemistry**

I am stuck in the following in my homework. BaC/2 and Na2CO3 turns different colors when the same indicator is added to each? Why does this happen? How is the ph of each of these different? I have tried on this one and cannot get it. Thanks for our help. Bob

**chemistry**

I am stuck in the following in my homework. BaC/2 and Na2CO3 turns different colors when the same indicator is added to each? Why does this happen? How is the ph of each of these different? I have tried on this one and cannot get it. Thanks for our help. Bob

**chemistry**

Thank you Dr.! So sorry, I typed a slash instead of an l; too many hours at this. In looking at this, i get it now. Thank you for such a complete answer. Bob

**chemistry**

I am stuck in the following in my homework. BaC/2 and Na2CO3 turns different colors when the same indicator is added to each? Why does this happen? How is the ph of each of these different? I have tried on this one and cannot get it. Thanks for our help. Bob

**Chemistry**

jk

**history**

Does a propaganda poster have to be opposing the cause? for example, propaganda poster for the 2012 elections Would this work... If i made some kind of propaganda poster to make people want to vote for Obama? (like some vote for obama propaganda poster)...Of would that not ...

**Math Help**

1.b 2.d 3.a 4.d 5.b 6.c 7.b 8.a 9.b 10.b 11.b 12.b 13.d 14.b 15.c

**math**

2/3x3/5

**Algebra**

three numbers are such that the second is the difference of three times the first and 6 while the third is the sum of 2 and 2/3 the second. The sum of the three numbers is 172. Find the largest number.

**i don't understand this math**

4 is C

**science**

jasie traveled 500m at a speed of 13 miles how long did it take her?

**algebra**

In 2000, 49% of the residents in a large city regularly used newspapers for getting news and this has decreased at an average rate of approximately 1.3% per year since then. Find a linear function in slope-intercept form that models this description. The function should model ...

**Math**

write a number that rounds to 47,000 when rounded to the nearest thousand and to 50,000 when rounded to the nearest ten thousand.

**5th grade religion**

All men.

**physics**

You drop a stone into a deep well and hear it hit the bottom 4.40 s later. This is the time it takes for the stone to fall to the bottom of the well, plus the time it takes for the sound of the stone hitting the bottom to reach you. Sound travels about 343 m/s in air. How deep...

**Physics**

A shopper pushes a cart 50 m south down one aisle and then turns 90.0° west and moves 19 m. He then makes another 90.0° turn and moves 13 m. (a) What is the largest possible displacement of the shopper? (b) What is the smallest possible displacement of the shopper? ...

**equations**

2 pennies

**Chemistry**

If a soft-drink bottle whose volume is 1.50 is completely filled with water and then frozen to -10 , what volume does the ice occupy? Water has a density of 0.997 at 25 ; ice has a density of 0.917 at -10 . Could you also explain the steps as to how I would go about solving ...

**social studies**

which of these is not like the others 1.John Winthrop 2.James Oglethorpe 3.William Penn 4.Roger Williams I think that it would be John Winthrop because all the rest started colonies which later became state names but i don't think that is sufficient evidence

**Math**

You invested $14,000 in two accounts paying 5% and 9% annual interest, respectively. If the total interest earned for the year was $820, how much was invested at each rate?

**physics**

20km

**physics**

7920

**Social Studies**

Ms. Sue I only a few a few more sentences could you please help me?? I think oil is more important to Southwest Asia than water. It has increased their wealth and standard of living. It is also the main export in Southwest Asia and has provided work for many people.

**Social Studies**

sorry the second oil is supposed to be water

**Social Studies**

Why is oil more important than oil in the middle east and southwest asia? 5-7 sentences

**Math**

10/15 * 9/14 * 5/13 = 15/91 = 0.165 (3sf)

**health**

??????

**Statistics**

An instructor has graded 25 exam papers submitted by students in a class of 26 students, and the average so far is 71. (The maximum possible score is 100.) A) To raise the class average by 1 point, the score on the last paper has to be:

**biology**

darkies

**biology**

dorkies

**biology**

sorry babe gosh

**Science**

please help

**Science**

Imagine you are a plant. How are you and your cells different than animals. 1/2 - 3/4 page

**Alegebra 1**

there are no equations