# Questions Asked onAugust 29, 2010

1. ## physics

An engineer in a locomotive sees a car stuck on the track at a railroad crossing in front of the train. When the engineer first sees thecar, the locomotive is 310 m from the crossingand its speed is 10 m/s.If the engineerâ€™s reaction time is 0.39

2. ## Chemistry

A solid white substance A is heated strongly in the absence of air. It decomposes to form a new white substance B and a gas C. The gas has exactly the same properties as the product obtained when carbon is burned in an excess of oxygen. Based on these

3. ## college physical science

According to table 1.3, what volume of iron would be needed to balance a 1.00cm3 sample of lead on a two pan laboratory balance? Table 1.3 shows densities g/cm3 such as iron=7.87g/cm3 and lead is 11.4g/cm3

4. ## Physics

A sprinter explodes out of the starting block with an acceleration of +2.3 m/s^2, which she sustains for 1.2 s. Then, her acceleration drops to zero for the rest of the race. What is her velocity (a) at t=1.2 s ans (b) at the end of the race?

5. ## maths

a 5 foot stick is cut so that one part is 2\3 of other. how long,on inches is the shorter segment?

6. ## algebra1

at midnight, the temperature was-12degrees F. by noon, the temperature had risen 25degrees F. durinh afternoon, it fell to 10degrees f ANOTHER 3 degrees f by midnight. what was the temperature at midnight?

7. ## math 116

The average speed, s, was between 110 and 120 mph. translate to a inequality

8. ## Statistics

Calculate each binomial probability: a. Fewer than 4 successes in 12 trials with a 10 percent chance of success. b. At least 3 successes in 7 trials with a 40 percent chance of success. c. At most 9 successes in 14 trials with a 60 percent chance of

9. ## Algebra

Q=50-5P. Solve the equation for P Choose the right one P=50-Q P=50+Q P=10-5Q P=10-(1/5)Q P=50-5Q

10. ## Statistics

A lottery ticket has a grand prize of $28 million. The probability of winning the grand prize is .000000023. Based on the expected value of the lottery ticket, would you pay$1 for a ticket? Show your calculations and reasoning clearly.

11. ## Calculus

The table shows the position of a cyclist. t (seconds) 0 1 2 3 4 5 s (meters) 0 1.6 4.6 10.4 17.8 25.2 (a) Find the average velocity for the time period [1, 3]. ? m/s (b) Find the average velocity for the time period [2, 3]. ? m/s (c) Find the average

12. ## college

Two point charges have a total charge of 505 µC. When placed 1.10 m apart, the force each exerts on the other is 19.3 N and is repulsive. What is the charge on each? (Round your answers to the nearest µC.)

13. ## Chemistry

HSO4 + HCO3 -> SO4 + H2CO3 How would I know which are Bronsted-Lowry acids?

14. ## math

" A total of $32000 is invested in two municipal bonds that pay 5.75% and 6.25% simiple interest. The investor wants an annual interest income of$1900 from the investments. What amount should be invested in the 5.75% bond?"

15. ## CALCULUS

The displacement (in centimeters) of a particle moving back and forth along a straight line is given by the equation of motion s = 3sin(ðt) + 5cos(ðt), where t is measured in seconds. (Round all answers to the nearest hundredth.) (a) Find the average

16. ## L PreCal

A car is moving at a rate of 65 miles per housr and the diameter of it's wheels is 2.5ft. Find the number of revolutions per minute the wheels are rotating. I have no idea where to begin on this question. How do you find rev per min?? Can someone walk me

17. ## Math - Pre-Algebra

A set of building blocks of various shapes and colors. If 30% of the blocks are cubes, and 40% of the cube blocks are red the then _______? what % of the blocks are red cubes.

18. ## algebra1

write each number as a terminating or repeating decimal. 3/16 2/9 15/12 4/11

19. ## BIO 100

Assignment: The Scientific Method • Review Appendix D. • Open the Scientific Method Web site. • Follow the instructions at the bottom of the Web site to choose a hypothesis and prediction about growing plants. • Click on Do the Experiment. The

20. ## Calculus

lim x-->0+ f(x), where f(x)= x ln x values for x are 1,0.5,0.1,0.05,0.01,0.005,0.001 when i plugged in 1 i got 0 then -.34657 then -.23025 ................... leading up to -0.00690 what is the value of the limit is it approaching 0?? and if it is

Write a quadratic equation in the variable x having the given numbers as solutions. Type the equation in standard form, ax^2 +bx+c=0 The Solution is 10, only solution!

22. ## Math

a ball rebounds 1/2 of the height from which it is dropped. The ball is dropped from a height of 136 feet and keeps on bouncing. How far will it traveled when it strikes the ground the third time?

23. ## social studies

what river name comes from choctaw word meaning "long river"

24. ## Managerial Economics

How would you react to a sales manager’s announcement that he or she has in place a marketing program to maximize sales?

25. ## Physical Science

A cubic tank holds 1,000kg of water. What are the dimensions of the tank in meters. Explain your reasoning.

26. ## math

ok, i need to write an expression equal to 10 and the numbers i need to use are 5,8,9,7 and i need to use +, /, + can anyone help me?

27. ## Chemistry

The average mass of a solid copper penny is 2.63 g . What is the mass of one mole of pennies? How would I solve this?

28. ## Chemistry

How many liters of gasesous methane (CH4) must be burned in oxygen to produce enough H2O and CO2 to fill a 3.0 L balloon? Assume that H2O and CO2 are the only combustion products and that the temperature and pressure remain constant. How would I solve

29. ## Math AP Calc

Label each statement TRUE or FALSE. a. The sum of two one-to-one functions is one-to-one. b. The product of two one-to-one functions is one-to-one. c. If f is a one-to-one function and k is a real number (constant), then the function g(x)=k*f(x)is

30. ## math

What type of graph would be appropriate for displaying this type of data? The following are prices (in dollars) 2004 autos as listed in a sale ad in the auto section of the newspaper: 12,997 14,891, 18,666, 21,799 17,495 17,266 21,517 14,414 14,257 15,634

31. ## spanish

Part 4—Listening Comprehension Directions: Listen to this short story called “What ought a man to do on earth?”—¿Qué debe hacer sobre la tierra un hombre? You will hear the story two times. After listening to the story, answer these questions.

32. ## simple physics problem

A crate sliding down a ramp reaches the bottom of the ramp and slides across a flat floor. At the instant shown, the crate has a speed of v= 8.90 m/s. The crate comes to a stop after a distance x= 13.0m . What is the coefficient of kinetic friction between

33. ## geometry

The coordinate of M is 2.5 and MN=4. What are the possible coordinates for N?

34. ## chemistry

what happens when oil goes in the ocean. and what are the different effects

35. ## Grammar

Their are three kids in the room. We have been married for 20 years, and are relationship is as strong as ever. I’m having trouble with my car. Can you give me some advise? The diplomats are doing what they can to restore peace. I know it is important,

36. ## History

Who were the principal leaders of the Glorious Revolution?

37. ## Algebra I

The expression 2(l+w) may be used to find the perimeter of a rectangle. What are the length and width of a rectangle if the area is 13 1/2 square units and the length of one side is 1/5 the measure of the perimeter?

38. ## algebra116

In 1995, the life expectancy of males in a certain country was 73.8 years. In 2001, it was 76.5 years. Let E represent the life expectancy in year t and let t represent the number of years since 1995. The linear function E(t) that fits the data is__. Use

40. ## algebra1

evaluate the expression n +(-5) for eachvalue of n. n=312 n=5.75 n= -7/15 n= -7 2/5

41. ## algebra1

2/5 - 7/8, 2/5 - 3/10

110. ## Chemistry Check

A compound that contains only Fe and O is 69.9% Fe by mass. What is the empirical formula of theis compound? Attempt: 69.9g(1/56): 1 30.1g(1/16): 2 I got FeO2 but the answers say that it is Fe2O3

117. ## social studies

What are 4 regions

118. ## English

1. The leaves fallen on the ground were wet and dirty. 2. The leaves which had been fallen on the ground were wet and dirty. 3. The leaves which was fallen on the ground were wet and dirty. (Does #1 mean #2 or #3?)

119. ## MARKETING

Your company’s sales are 50,000 units. The unit variable cost is $12. Your markup percent on sales is 40% and your fixed costs are$100,000. 1. What is your profit / loss?

120. ## Calculus

Lim (tan^2(x)/x) x->0

121. ## math

6x^4-7x^2+2=0 is it 2^1/2 over 3^1/2

122. ## English

1. She has a watch which is made in Switzerland. 2. She has a watch made in Switzerland. 3. She has a watch which was made in Switzerland. 4. She has a watch having been made in Switzerland. 5. She has a watch made in Switzerland. (#1 can be changed into

123. ## math please check and help!!!!

what is the vertex and line symmetry for f(x)=1/2(x+8)^2+4 and what is the max/min value of f(x)? Is the answer for the vertex (8,4) is the min value of f(x) (-8,4)

124. ## math

Question solve 6^4-7x^2+2=0 MY ANSWER I get 28b^13+b^2+22b+26 over 4b+3 but I do not understand how this can be the solution for x

125. ## Chemistry

Catalytic cracking is an industrial process used to convert high-molecular-mass hydrocarbons to low-molecular-mass hydrocarbons. A petroleum company has a huge supply of heating oil stored as straight chain C17H36, and demand has picked up for shorter

126. ## algebra1

are these correct? compare. write , or = -4-(-6) > -7-3 |-51| >|0| 3-(-3) > 0-(-3) -3-8 = -22 + 11 |10 + 5| < |-15|

127. ## math

is estimate greater than actal sum?

128. ## Astronomy

Orbital speed is the speed with which a planet moves around the sun. The speed is determined by: a)the mass of the planet only b) the mass of the sun only c)both the mass of the planet and the mass of the sun d)the mass of the planet and it's distance from

129. ## algebra1

evaluate the expression n+(-5) for each value of n. N=-72/5, n=-7/12 can u pls show me how to this. cuz i've been doing something wrong

130. ## Medical Office Assisting

I need two people to interview for a school project. They must be Medical office Assistants. I have 8 questions for each one to answer. please respond as soon as possible!!!

131. ## Math AP Calc

In 1951, the population of India was 357 million people. By 1981 it had grown to 984 million. If the population is growing exponentially, when (in what month of what year) will the population reach 1 billion people?

132. ## science

what is science?

133. ## English

Homework Help Forum: English Posted by rfvv on Sunday, August 29, 2010 at 9:48pm. 1. The leaves fallen on the ground were wet and dirty. 2. The leaves which had been fallen on the ground were wet and dirty. 3. The leaves which was fallen on the ground were

134. ## Math AP Calc

The population of New Hampshire was 1 million in 1990. It doubles every 25 years. Estimate the population in 1996.

135. ## Limits

Lim (tan^2(x)/x) x->0

136. ## Chemistry

Sorry, I have a couple more questions. For this question: Which one of the following solutions will be the worst electrical conductor at 25 degrees C? d) 0.10 mol L^(-1) CH3OH (aq) How would I solve this? the answer was d.

137. ## Algebra 2

Let f(x)=x^2 - 1 and g(x)=1 - 2x. Find the indicated values. 1. g(1/f(3)) 2. f(x + h) - f(x) all over h

138. ## Chemistry.

In which of these compounds is the oxidation state of CI the highest? a) HCIO2 e) HCIO4 Answer is e Is there a formula to solve this ?

139. ## college

the molecules that are switched on after fertilization and begin sculpting arms finger vertebrae ribs a brain and other body parts are called what

140. ## astronomy

If Taurus is now rising at sunset, which constellation will rise at sunset next month?

141. ## algebra1

tell whether each statement is sometimes, always, or never. 1) the value of the expression -2 + n is less than value of n. answer always. 2) when b is positive, the expression -b + (-b) is equal to 0. answer always. 3) when x is negative, the value of the

142. ## Statistics

Calculate each binomial probability: a. X = 2, n = 8, ð = .10 b. X = 1, n = 10, ð = .40 c. X = 3, n = 12, ð = .70 d. X = 5, n = 9, ð = .90

143. ## algebra1

error analysis, which is incorrect? a) -5-(-8) b) -5-(-8) -5+(-8) -13

144. ## Chemistry

Which of the gases most closely resembles an ideal gas at standard temperature and pressure? 1) CO2 2) NH3 3) HI 4) H2 5) H2O why would it be H2

145. ## algebra1

error analysis, which is incorrect? a) -5-(-8) b) -5-(-8) -5+(-8) -5+(8) -13 3 answer: A?

146. ## Chemistry

Why is C2H4 not an alkane?

147. ## Math, Still Need Help!

Label each statement TRUE or FALSE. a. The sum of two one-to-one functions is one-to-one. b. The product of two one-to-one functions is one-to-one. c. If f is a one-to-one function and k is a real number (constant), then the function g(x)=k*f(x)is

148. ## Chemistry Last

Last question: An average person expends ~100 kj to walk 1km. How far will the average car travel by the time it expends the same amount of energy (i.e. 100 kJ) as a person who walked 1 km? Fuel consumption of average car= 8 km L^(-1) Heat of combustion of

149. ## algebra1

which expression is equivalent to |-3+5|? a) -3-5 B)-3+5 c)3-5 d)3+5 answer:A is it correct?

150. ## algebra2

what do you call it when someone pays back a loan quickly??

151. ## math

A toy manufacturer is introducin g two new dolls, my first baby and my real baby. IN one hour, the company can produce 8 first baby dolls and 20 real baby dolls. Because of demand, the company produces at least twice as many first babies as real babies.

152. ## english II

I'm suppose to edit the following sentence by adding either a semi-colon, colon, dashes, or an hyphen where it is needed. I think a semi-colon go behinh creatures. If your kids like ocean creatures marine life, there’s something they have to see.

153. ## mgt330

A worker in an automobile assembly line who chooses this type of work because of the job security it entails is said to be Intrinsically motivated Experiencing overpayment inequity Experiencing underpayment inequity Extrinsically motivated Self-actualizing

154. ## science true or false

True or False: Only at the equator are all the stars visible over the course of the year.

155. ## science

What climate is it? Saigon, Vietnam has heavy rains from May to November. Its temperature ranges from 78*F (coolest month average) to 84*F ( warmest month average). a) Tropical monsoon b) Tropical savanna c) Tropical raniforest d) Not Tropical c

156. ## Probability

What is the probability of the sum of two fair dice equals a prime number when rolled once?

157. ## Physics

A 1.4 kg ball is thrown upwards off the side of a building with a spped of 5.8 m/s and falls into an ocean 16 meters below. Once the ball hits the water it travels a depth of 1.4m then floats to the surface. Assuming the acceleration of the ball when it

158. ## astronomy

How long is the precession cycle?

159. ## Mrs. sue english help

I'm suppose to edit the following sentence by adding either a semi-colon, colon, dashes, or an hyphen where it is needed. I think a semi-colon go behinh creatures. If your kids like ocean creatures marine life, there’s something they have to see.

160. ## writing

This book is called "The Most Dangerous Game" My question is, Whitney claims animals understand fear-the fear of death and the fear of pain. Does Rainsford agree?

161. ## arithmetic

what is thr greatest common factor of 25and75

162. ## English

I don't need help getting the question answered, just explained? help anybody? Describe your experience with credit and credit cards in a brief paragraph using at least five adverbs and five adjectives in your description. Bold the adverbs and underline

163. ## algebra

3. To estimate animal populations, biologists count the total number of animals in a small section of a habitat. The total population of animals is directly proportional to the size of the habitat (in acres) polled.

164. ## English

1. The country speaks Spanish. (Is this one grammatical?)

165. ## English

There is #1 in the triangle. 1. Color the #1 triangle yellow. 2. Color the empty triangle yellow. 3. Color the blank triangle yellow. 4. Color the #1 empty triangle yellow. (Which expressions should I use?)

166. ## Math

In 1951, the population of India was 357 million people. By 1981 it had grown to 984 million. If the population is growing exponentially, when (in what month of what year) will the population reach 1 billion people? How do you know what month? -Reiny

167. ## algebra

the line y=0.16x +0.84 represents an estimate of the average cost of gasoline for each year. the line 0.14x-y=0.95 estimates the price of gasoline in january of each year. a) do you expect the lines to be intersecting, parallel, or perpendicular? explain

168. ## Math

The perimeter of a rectangle is 110 inches. The length exceeds the width by 41 inches. Find the length and the width. I can't seem to figure out this last question. Don;t know where to start. Please help it is my last question.

169. ## Math-Reiny Help! Previous Problem

In 1951, the population of India was 357 million people. By 1981 it had grown to 984 million. If the population is growing exponentially, when (in what month of what year) will the population reach 1 billion people? How do you know it's the 6th month?

170. ## geometry

if ab=3.bs, cd=2x+3,and ba=x+1. If ad=31 units, find x, ab, bc and cd

171. ## Math

I have no idea how to even start this problem. In 1951, the population of India was 357 million people. By 1981 it had grown to 984 million. If the population is growing exponentially, when (in what month of what year) will the population reach 1 billion

172. ## Math

The population of New Hampshire was 1 million in 1990. It doubles every 25 years. Estimate the population in 1996.

173. ## Math

Label each statement TRUE or FALSE. a. The sum of two one-to-one functions is one-to-one. b. The product of two one-to-one functions is one-to-one. c. If f is a one-to-one function and k is a real number (constant), then the function g(x)=k*f(x)is

174. ## algebra

Solve for P so P=? 1.)q=25-p P= I think it is 25+Q ? but am not sure 2.)Q=12-3P P= this one I get -q-12/3 but that's not aN OPTION AND i DON'T KNOW IF IT IS RIGHT OR HOW TO WRITE IT And #3 I have no clue on ?? 3.) 12Q=32-4P P=

175. ## math

Ms. Jones has a garden plot that measures 40ftX 20ft If she increases the garden by 4 ft on each side, by what percent has she increased the plot?

176. ## Algebra

I am having problems with polynomial functions. f(x)= (x-3)(x+2)(x+4)

177. ## Hum 176

I am having a hard time understanding what they want.

178. ## math

5x+3/5-5x-4/7

180. ## algebra 116

Graph the system of inequalities y>= -4, x >= 5

182. ## social studies

what states border Louisiana? what two states extend further south than Louisiana? what tates have a Gulf of Mexico coastline? Is Louisiana closer to nevada or virginia? What direction would you go from Louisiana to pennyslvania? What direction would you

183. ## Math

Simplify each expression: 1) (x+8)^2 = x^2 + 64 2) (x-2)^3 = x^3 - 8 So for (x+8)^2 i would use a^2 + 2ab + b^2 and a would be 8 but what is b? Would it be 64?

184. ## Physics

In a gas kept at a constant temperature, all molecules move with the same speed. True or false?

185. ## Chemistry

Which aqueous solution would you expect to have the lowest freezing point? (a) 0.10 molal glucose,C6H12O6, or (b)0.10 molal NaCl solution

186. ## MAT 116 UOP

Simplify each expression: 1) (x+8)^2 = x^2 + 64 2) (x-2)^3 = x^3 - 8 3) (x-2y)(x+y) = x^2 - xy -2y^2 4) (x+2)(x^2+3x-2) = x^3 + 5x^2 + 4x-4 Are my answers correct?

188. ## Humanities

What country is not a nation?

189. ## social studies

what states border Louisiana?