# Posts by jane

Total # Posts: 1,669

Math
Jess is running around a circular track, one lap every 40 seconds. Mackenzie is also running at a constant speed around the same track, but in the opposite direction. They meet every 15 seconds. How many seconds does it take Mackenzie to do one lap?

Math
Oh i see now! Ok thank you!

Math
So what exactly would the answer be? im confused..

Math
Peter has 1200 yards of fencing to enclose a rectangular area. Find the dimensions of the rectangle that maximize the enclosed area?

university physics
come on guys,it's urgent

university physics
A cryogenic storage container holds liquid helium, which boils at 4.20 K. Suppose a student painted the outer shell of the container black, turning it into a pseudo-blackbody, and that the shell has an effective area of 0.615 m2 and is at 3.01·102 K. a) Determine the ...

university physics
A copper sheet of thickness 2.19 mm is bonded to a steel sheet of thickness 1.13 mm. The outside surface of the copper sheet is held at a temperature of 100.0°C and the steel sheet at 25.7°C. a) Determine the temperature (in °C) of the copper-steel interface. b) ...

Biology
Hemoglobin is physiologically designed to deliver more Oxygen to exercising tissues than to resting tissues. Discuss three pieces of evidence that support this argument.

Astronomy
What is the size of the smallest craater on the moon that you can see with a telescope with a resolution of 2 arc seconds at a distance of 384,400 km?away

Astronomy
What is the maximum altitude above the horizon at which it is possible to find the moon when you are observing from a position at 42 degrees northern latitude?

Astronomy
What is the radius of the sun?

math
There were 20% more boys than girls in a swimming club. After 50 girls left, there were twice as many boys as girls in the club. How many boys were there in the club?

math
The ratio of the number of girls to the number of boys in a stamp club was 3 : 2 last year. When 15 boys joined the club this year, the ratio became 2 : 3. Find the total number of children in the club this year.

math
There were 20% more boys than girls in a swimming club. After 50 girls left, there were twice as many boys as girls in the club. How many boys were there in the club?

Math
a bout travels 1km upstream and 1 km downstream.it took the boat 1 hour for the round trip. the speed of the current is 2 kph. find the speed of the boat in still water.

math
what abot if it was 34/50

poetry
thanks so is this a free verse

poetry
this is how i put it in my own words Each month passed us by we were in endless winter every day was cold as ever and night so harsh an cruel we wait for the return of the glorious wonder,the sun

poetry
this is the first saanzer of Scott Goodbye we saw the months of wicked weather, As day to painful night did turn, Waiting, huddled close together For the frozen sun’s return.

poetry
i don't know how to rewrite it

poetry
9. Rewrite the first stanza of “Scott’s Goodbye” as free verse. (5 points)

Poetry
thanks

Poetry
is this right

Poetry
i think its Our food was gone. Our fuel was low

Poetry
thank you

Poetry
2. Which of the following lines from the poem includes an example of alliteration? (1 point) Waiting, huddled close together Our food was gone. Our fuel was low. Amundsen had reached the Pole. We had come pursuing glory

math
Mr.Jacobsen wants to hire a magician for his son's birthday party. Marion has a travel fee of \$30 and charges \$15 per hour. Gregory has a travel fee of\$50 and charges \$10 per hour. Define a variable. Then write a system of equatins to represent the situation. Solve the ...

math
Robert has 26 coins that are all nickels and dimes. The value of the coins is \$1.85. Write and solve a system of equations thatrepresents this situation.

math
Joseph sold tickets to the school musical. He had 12 bills worth \$175 for the ticketssold. If all the money was \$5 bills, \$10 bills, and \$20 bills, how many of each bill did he have?

math
Lena bought a total of 20 postcards. She bought 6 more large poscards than small. Write a system of equations that represents the postcards Lena purchased. Solve the system by substitution. Interpret the solution.

math
Could you please show me how to work this problem? Each hand in the human body has 27 bones. There are 6 more bones in the fingers than in the wrist. There are 3 fewer bones in the palm than in the wrist. How many bones are in each part of the hand?

English - Ms. Sue help
hi can u help on this question 2. Which of the following lines from the poem includes an example of alliteration? (1 point)

math
If y varies diretly with x, write an equation for the direct variation. then find each value. Find y when x = 10 if y = 8 when x = 20 If think I can find the value by y/10 = 8/20 with the answer for the value is 4. My problem is how to find the equation. Please explain.

English
to give me the speaker in a debaten the answer

Algebra
Two trains, one express and one local, leave Indianapolis at noon and head for Chicago 220 miles away. The express travels twice as fast as the local and arrives 2 hours ahead of the local. Find the speed of each train.

Physics
A current of 60 mA passes through a loudspeaker of resistance 6 Ω. What is the potential difference across the resistance of the loudspeaker? 36.0 V 10.0 V 0.36 V 0.10 V Answer B seems like it would be the obvious answer..

Algebra
The difference between the digits in a two-digit numeral is 3. The units' digit is twice the tens' digit. Find the nuermal.

algebra 1
top and bottom margins are 7/8 inch there are 5 rows of pictures with 3/16 inch between the vertical what would be the height of each picture

math
Courtney wanted to share raisins with Norman and Mark. She counted 36 raisins in her box. She said "If we all have the same number of raisins, there are 98 raisins in all." What is wrong with Courtney's statement?

math
sorry I post 56 instead of 58, the dimensions are 20ft by 58ft

math
The dimensions of the dog part are 20ft by 56 ft. Set up the problem w + w + ( 3w - 2 ) + ( 3w - 2 ) = 156

24040.82

science
Three lead balls of mass m1 = 14 kg, m2 = 26 kg, and m3 = 8.7 kg are arranged as shown in the figure below. Find the total gravitational force exerted by balls 1 and 2 on ball 3. Be sure to give the magnitude and the direction of this force.

physics
At an amusement park there is a ride in which cylindrically shaped chambers spin around a central axis. People sit in seats facing the axis, their backs against the outer wall. At one instant the outer wall moves at a speed of 3.04 m/s, and an 65.2-kg person feels a 290-N ...

science
One truck load is 2.5* 1.5* =3.75m^3

Physics
A balloon carrying a basket is descendign with a constant acceleration of g/3. the total mass of the basket and contents is mB.you see water below and decide you need to throuw out some mass to allow the basket to rise and not hit the water. how much mass should you throw out ...

physics
A crate is pulled to the right with a force of 84.5 N, to the left with a force of 116.5 N, upward with a force of 685.7 N, and downward with a force of 242 N. What is the net external force in the x direction?

physics
Sue and Jenny kick a soccer ball at exactly the same time. Sue’s foot exerts a force of 52.7 N to the north. Jenny’s foot exerts a force of 91.8 N to the east. a) What is the magnitude of the resultant force on the ball? b) What is the direction of the resultant ...

Biology
Some genes are said to be “linked”. Explain this term and the implications it has as to the inheritance of certain traits. Provide 2 (human) examples of linked genes? PLEASE HELP ITS A REQUEST

Some genes are said to be “linked”. Explain this term and the implications it has as to the inheritance of certain traits. Provide 2 (human) examples of linked genes?

physics
Maria throws an apple vertically upward from a height of 1.3 m with an initial velocity of +2.6 m/s. Will the apple reach a friend in a tree house 2.4 m above the ground? The acceleration 1. No, the apple will reach 1.37063 m below the tree house 2. Yes, the apple will reach 1...

Algebra
Natalie has some nickles, Dirk has some dimes, and Quincy has some quarters. Dirk has five more dimes than Quincy has quarters. If Natalie gives Dirk a nickel, Dirk gives Quincy a dime, and Quincy gives Natalie a quarter, they will all have the same amount of money. How many ...

Doe
A car traveling at 6.7 m/s accelerates 2.1m/s2 to reach a speed of 12.0 m/s. How long does it take for this acceleration to occur? Answer in units of s

physics
a 60 kg object is attached to one end of a 40 kg steel tube 2.4 m long. what is the distance from the loaded end to the balance?

math
1.P(10,1)*p(10,2)*p(10.3) 2.C(12,9) 3.C(15,3) 4.5!

math
Determine , apermutation or combination 1.The winner and second and third placed in contest woth 10 finalists . 2.Selecting nine books to check out of the library from a reading list of twelve . 3.Selecting three of fifteen flavours of ice cream . 4.An arrangement of letters ...

math
Decide if it's permuatation or combination . 1-how many teams of 4 horses be made if there were 9 horses in total ? 2-mike has nice baseball trophies to arrange on the shelf . How many different ways can be arranged ? 3-in a math class , there are 24 students,the teacher ...

math
Decide if it's permuatation or combination . 1-how many teams of 4 horses be made if there were 9 horses in total ? 2-mike has nice baseball trophies to arrange on the shelf . How many different ways can be arranged ? 3-in a math class , there are 24 students,the teacher ...

chemitry
what does it mean by how many moles of the limiting reactants in sodium bia

earth
waste produced by people along the east coast of the united states has been dumped into the atlantic ocean where it is distriuted y surface ocean currents, Which coastel area is most liekly to become polluted by this waste?

geometry
Steve, thank you so much. You explained it so I could understand it.

geometry
Algebra BD bisects <ABC. Solve for x and find m<ABC. m<ABD = 4x - 16, m<CBD = 2x + 6 Please teach me how to work this.

Geometry
Solve for x. Find the angle measures to check your work. m<AOB = 4x - 2 m<BOC = 5x + 10 m<COD = 2x + 14 How do I solve for x?

Geometry
Please explain how to work this problem: A pair of earrings has blue wedges that are all the same size. One earring has a 25 degree yellow wedge. The other has a 14 degree yellow wedge. Find the angle measure of a blue wedge. How do the angle measures of the earrrings relate? ...

What is most important about section 179 depreciation?

calculus
If f(x)= 1 + ln(x+2), then f^-1 (x)is...?

Physics
A particle moves in a straight line so that its position (x cm) from a fixed point O at time (t seconds) is given by x= t^3-6t^2-15t-5 Find the average speed of the particle in the first 7 seconds

calc
got it, thanks!

calc
Suppose that f(x) = 1/x. Find a simplified expression for f(x)-f(a)/x-a

precalc review/calc
Thanks! So because the smallest and biggest numbers +/- 3 and the middle number 0 result in the smallest and largest y values, 1 and 8 respectively, the range is therefore [1, 8]. That makes sense. :D

precalc review/calc
For the curve y=2^[sqrt(9-x2)], find the range of the function. I think the range is [0,8] but I don't know why. Could you show me how to get to that answer? Thanks.

Chemistry
A piece of metal weighing 20.32 grams is added to a flask with a volume of 24.5 cm3. It is found that 18.52 grams of water must be added to the metal to fill the flask. What is the density of the metal?

process control
Average power (btu/s) needed for a process that heats water at 40 lbm/min from 20F to 150F. Can you just tell me generally how to solve a problem like this. The numbers do not really matter, I just need to practice problems. Thanks.

Communication
Any. :) I need a theory that supports how and why Twitter is being used as a prime source for real time news. I thought of comparing it with the newspaper and facebook.

Communication
Hello! I need help with my research regarding-- Twitter being used as a prime source for real time news. Can anyone suggest a communication theory I can use for this study? I was thinking about using the agenda-setting theory, but I need another theory aside from that. :)

Physics
A fire hose can project water at a rate of 6.00x10^2 litres per minute to a height of 40.0m. Find: a) the velocity with which the water leaves the tube b) the kinetic energy of the water as it leaves the hose c) the kinetic energy of the water at 40.0m.

geometry
In Geometry how do I calculate the precion of 14 meters?

algebra1
tripling the greater of two consecutive even integers gives the same result as subtracting 10 from the lesser even integer.what are the integers?

calculus
suppose you invest some money in an account at 6% compounded monthly, after four years you have \$8000, how much interest did you earn

geometry
A woman who is 6-ft tall casts a 4.5-foot shadow at the same time that a building casts a 75-foot shadow. What is the height of the building in feet?

math
Issa IS driving to the airport to catch a flight to Miami, and Her arrival depends on traffic. If the traffic is light, then she can drive 60 mph and arrive at the airport 1 hour early. If traffic is heavy, she can drive 35 mph and arrive at the airport on time. The equation ...

marketing
Using the broad definition of a product, identify and explain what products are being offered by a shop that specializes in bicycles; by a travel agent; by a supermarket; and, by a new car dealer

marketing
How might you use different types of research (focus groups, observation, survey, and experiment) to forecast market reaction to a new kind of disposable baby diaper?

Math
Issa is driving to the airport to catch a flight to Miami, and her arrival depends on traffic. If the traffic is light, then she can drive 60 mph and arrive at the airport 1 hour early. If traffic is heavy, she can drive 35 mph and arrive at the airport on time. The equation ...

Science
science is the mixture ilearneed the science on the time she give my on fast day me is go for the killer and gave my juck on wag friends like the opportunity go as the preaper good life and good shade

Science
science is the mixture ilearneed the science on the time she give my on fast day me is go for the killer and gave my juck on wag friends like the opportunity go as the preaper good life and good shade

Math
Of households in the United States, 18 million, or 16%, have three or more vehicles, as stated in USA Today (June 12, 2002), quoting the Census Bureau as the source. (a) If two U.S. households are randomly selected, find the probability that both will have three or more ...

Statistics/Math
U.S. Interstate 64 runs between Portsmouth, VA, at I-264 on the eastern end to St. Louis, MO, at I-270 on the western end. While passing through six states and five more major cities, I-64 intersects nine more interstate highways. The number of miles in each state is as ...

Statistics

Statistics
How would you interpret the findings of a correlation study that reported a linear correlation coefficient of +0.3?

chemistry
the book rounds the answer to 4.2 so either is fine. how do i go from here to solve for the amount of time? if you could please show a step by step process id really appreciate it!

chemistry
i get 4.207 g Cu

chemistry
suppose 250 mL of a .433 M solution of CuCl2 is electrolyzed. how long will a current of 75A have to run in order to reduce the concentration of Cu2+ to .167M? What mass of Cu will be deposited on the cathode during this time?

Chemistry
Ammonia, NH3, is a stronger ligand than Cl- but weaker than CN-. Complete the balanced equations for the reactions that are predicted to occur. CoCl6^3- (aq) + CN- (aq) ---> Co(NH3)6^3+ (aq) + Cl- (aq) ---> Co(CN)6^3- (aq) + NH3 (aq) --->

Math
Please round the number 43,678.426785 to the nearest ten thousand

U.S. GOVERNMENT
1.False 2.False 3.True 4.True

math
4. Gregory teaches martial arts. He charges a one-time processing fee of \$5.00 and the cost of the classes is shown below. Let x represent the number of classes and y represent the cost of classes. Based on this information, what will it cost to take 10 classes? Cost of ...

U.S. GOVERNMENT
1. True 2. True 3. False 4. True

Math
What is the length of a segment whose endpoints are (5, -8) and (9,2). Please explain to me what the formula or rules for working this problem.

Math
Simplify x^2 - 9x + 18/ x^2 - 6x + 9 for all values of x for which the expression is defined. A. x-3/x-6 B. x-6/x-3 C. x-1/x+9 D. x+9/x-1 Please explain how you work this problem in detail. Thanks.