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Ellie

Questions and answers by visitors named Ellie

Questions (560)

change the polar equation r=5/1+cos(theta) to rectangular form.How do I do this? Thank you! :)
1. 6 answers
2. 12,473 views
What inequality is shown on the graph? Write your inequality with the variable coming first. Use the letter m for the variable.
1. 1 answer
2. 88 views
a park is 3/4 mile long and 1/2mile wide. Which fraction represents the ratio of the parks length to its width?I did it by 3/4
1. 4 answers
2. 2,447 views
_____ Clouds of gas and dust gather due to ____. Baby stars (_________) form
1. 5 answers
2. 1,002 views
Isosceles triangle XYZ is placed on a coordinate plane to be used for a coordinate proof. What should the coordinates of its
1. 1 answer
2. 714 views
How do I do these?A passenger at an airport steps onto a moving sidewalk that is 100.0 m long and is moving at a speed of 1.5
1. 3 answers
2. 1,493 views
The diagram below indicates three positions to which a woman travels. She starts at position A, travels 3.0 km to the west to
1. 3 answers
2. 986 views
How to calculate the mean number of threatened fishes, where total number of fishes is 29300 and number of threatened fishes is
1. 1 answer
2. 695 views
What is the official name of our system of measurement in America? AllI ever hear about is the metric system, but I don't know
1. 6 answers
2. 734 views
Find all x and y between 0 and 2pi so that the equation is ture-2 cosx -i sin y = 2 sinx +i i am also having trouble with this
1. 3 answers
2. 430 views
what product could you see in a flask when you cobined copper and sodium. basically what is the name for copper and sodium when
1. 1 answer
2. 286 views
Ok we are doing distributive property in math and I'm so confused on some of the problems. the problems are:9+(x-4) 5-4x-5/-4
1. 1 answer
2. 467 views
What are differences between Continental Drifts and Plate Tectonics?I need at last 4 for each. Please help its urgent!!!!!
1. 5 answers
2. 392 views
What needs to take place to bridge the economic gap between whites and blacks in South Africa?
1. 3 answers
2. 427 views
Does apartheid still exist in some ways in South Africa? Explain.
1. 2 answers
2. 464 views
What is the unit for magnetic circuit?
1. 4 answers
2. 307 views
Which moon would look the brightest from jupiter and why?
1. 4 answers
2. 705 views
-2x^2<301/abs value(11-9x)=6 Please show me how to do these two!!
1. 4 answers
2. 362 views
Is this correct? Write an explicit and recursive formula: -5,-4,-3,-2,-1... explicit: -5N+1recursive:An-1+1
1. 1 answer
2. 467 views
Determine the seating capacity of an auditorium with 10 rows of seats if there are 10 seats in the first row, 16 seats in the
1. 2 answers
2. 848 views
-Write the arithmetic sequence 21,13,5,-3... in the standard form:a_n= -a_n=a_1+(n-1)d--so a_n=21+(n-1)-8 *a_n=-168-8n why isnt
1. 7 answers
2. 1,586 views
For an arithmetic sequence, a_{19} = 78. If the common difference is -3, finda_1 = (i found it to be 132) the sum of the first
1. 3 answers
2. 545 views
The moment of inertia of an object depends on the shape of the object, location and orientation of the axis of rotation. For a
1. 3 answers
2. 816 views
You want to make an old-fashioned pendulum clock, with a period of exactly 1.4 second(s). Use the Earth's gravitational
1. 4 answers
2. 644 views
Period=1.4 secondsgravitational acceleration=9.8 m/s^2 length of string=.4865m angle is 3 degrees acceleration from that angle
1. 4 answers
2. 406 views
Read the activity 2-1:Force and Pressure in the lab manual (pages 167-168). As described in the manual, consider a 10 cc syringe
1. 7 answers
2. 1,107 views
Read the activity 2-1:Force and Pressure in the lab manual (pages 167-168). As described in the manual, consider a 10 cc syringe
1. 5 answers
2. 552 views
Useful Constants: 1 Torr = 133.32 Pa; R = 8.3145 J/mol·KYou have a thin metal sphere of unknown volume that contains helium gas
1. 2 answers
2. 514 views
Explaining how ear defenders work using the big idea of energy transfer?
1. 1 answer
2. 456 views
In a run involving 1.00 mL 2.50 * 10^-3 FE and 1.00 mL of 2.50 * 10^-3 SCN solutions made up to a total volume of 10.0 mL, the
1. 1 answer
2. 409 views
what is the net ionic equation for NaOH + H2SeO3?
1. 3 answers
2. 587 views
A precipitate will be formed when an aqueous carbonic acid soution is added to what other aqueous solution?A. ammonium chloride
1. 4 answers
2. 1,938 views
what is the oxidizing agent in the equation8H(aq)+ 6Cl(aq)+ Sn(s)+ 4NO3(aq)yields SnCl6(aq)+ 4NO2(g)+ 4H2O
1. 2 answers
2. 943 views
the molar mass of an unknown gas was measured by an effusion experiment. it took 63s for te gas to effuse. where as nitrogen gas
1. 4 answers
2. 1,998 views
a 3.35g sample of solid silver reacted in excess chlorine gass to give a 4.45g sample of pure solid AgCl. the heat given off was
1. 1 answer
2. 422 views
a 47.7L sample of a gaseous hydrocarbon, measured at 1.00atm and 25degreesC is burned in excess oxygen, liberating 4.33X10^3 kJ
1. 2 answers
2. 606 views
what is the standard enthalpy formation of liquid diethylamine (CH3CH2)2 NH?N2O5(g) + 8CH4(g) ==> 2(CH3CH2)2NH(l) +5H2O(l),
1. 6 answers
2. 2,044 views
Jack is standing next to a monument in the city square. His shadow is 18 feet long. The shadow of the monument is 150 feet long.
1. 3 answers
2. 446 views
on july 16, 1882, a massive thunderstorm over Dubuque, Iowa, produced huge hailstones. The diameter of some of the hailstones
1. 1 answer
2. 423 views
What's the particle diagram of Carbon monoxide? Thank you
1. 1 answer
2. 350 views
I have a question about how to answer thisIf something is dulce, one would probably want to drink lemonade or a sour drink with
1. 4 answers
2. 296 views
Superman is a character from the DC Comics universe with superhuman abilities. One day in the city of Metropolis you look to the
1. 3 answers
2. 461 views
Decide whether the pair of lines is parallel, perpendicular or neither:2x+3y=3 2x+3y=10
1. 1 answer
2. 404 views
If a balloon is made of Mylar(alumized plastic) instead of rubber, would it stick to a wall if you rubbed the balloon against a
1. 5 answers
2. 1,346 views
I have to write a sentence saying that I feel like doing some activity say playing baseball of football-it doesn't matter. We
1. 4 answers
2. 838 views
How does the medium in which you are communicating your message influence your writing and editing styles? I think it means
1. 4 answers
2. 694 views
How many terms are in this sum?5x-6a+8
1. 1 answer
2. 364 views
Please check answer and help with one of them:1. check please car in an accident speed of car is the s, d is length of skid=30
1. 1 answer
2. 373 views
A 51 kg person drinks 330. g of milk, which has a "caloric" value of approximately 3.0 kJ/g. If only 18% of the energy in milk
1. 3 answers
2. 415 views
Given the following heats of combustion.CH3OH(l) + 3/2 O2(g) CO2(g) + 2 H2O(l) ΔH°rxn = -726.4 kJ C(graphite) + O2(g) CO2(g)
1. 3 answers
2. 1,544 views
My homework task is to write an introductory email to my french exchange partener about:yourself, how you get on with your
1. 2 answers
2. 592 views
My homework task is to write an introductory email to my french exchange partener about:yourself, how you get on with your
1. 4 answers
2. 516 views
My homework task is to write an introductory email to my french exchange partener about:yourself, how you get on with your
1. 2 answers
2. 597 views
My teacher asked me this question and I do not know the answer would you be able to tell me and why thank yoularge bodies loose
1. 1 answer
2. 404 views
thank you so much for taking so much time into helping me perfect my french essayI have done the corrections you have told me to
1. 3 answers
2. 701 views
Hello i made all the corrections you told me too how does this look :)please tell me if there are any morre grammar or spelling
1. 2 answers
2. 606 views
A bullet of mass 4.8 g strikes a ballistic pendulum of mass 3.3 kg. The center of mass of the pendulum rises a vertical distance
1. 2 answers
2. 639 views
for my homework we had to write a paragraph on what we do to help out around the housecould you please let me know if there are
1. 2 answers
2. 514 views
for my homework we had to write a paragraph on what we do to help out around the housecould you please let me know if there are
1. 3 answers
2. 438 views
Sandy's throw to first base was short.what is the subject and verb etc..
1. 4 answers
2. 1,947 views
For a project I'm doing for world history, I have to include 2 "VIP's" for Winston Churchill. Does anyone know of a person who
1. 1 answer
2. 427 views
In Maus, what 3 times does Vladek almost die, but is saved?I feel like there are a ton of times he could have dies (being in the
1. 1 answer
2. 401 views
i need to write an essay about if anne frank's life is relevant to teenager's today. Please hele me!!
1. 1 answer
2. 299 views
What is the value of x when the line crosses the x-axis?
1. 1 answer
2. 278 views
Two 30kg children in a 20 kg cart are stationary at the top of a hill. They start rolling down the 80m tall hill and they are
1. 3 answers
2. 588 views
An 8g bullet leaves a gun at 700ms-1.(a) what is the maximum height that this bullet could reach (ignoring air resistance)
1. 1 answer
2. 484 views
An 8g bullet leaves a gun at 700ms-1.(a) what is the maximum height that this bullet could reach (ignoring air resistance)
1. 2 answers
2. 588 views
The Earth has a mass of 5.97 x10^24 kg and the Moon has a mass of 7.36 x10^22kg. The average distance between the center of the
1. 4 answers
2. 1,434 views
During a car crash a 65kg person's head goes from traveling at 50km h-1 to stationary in 0.15s.(a)What is the magnitude of the
1. 4 answers
2. 2,533 views
A crane is lifting a 500kg payload straight up at a constant speed of 0.7ms-1.(a)What is the power output of the crane.
1. 3 answers
2. 1,020 views
during a match, pat kicks a football onto the roof of the stand. The stand and the path of the ball are at righ angles to each
1. 2 answers
2. 628 views
A 2.0kg block hang from a vertical spring causes it to stretch by 200cm. If the 2.0kg block is replaced by a 0.50kg mass and the
1. 4 answers
2. 1,135 views
At what rate will a pendulum clock run on the Moon, where theacceleration due to gravity is 1.63 m/s2 , if it keeps time
1. 3 answers
2. 5,016 views
If a pendulum-driven clock gains 5.00 s/day, what fractional changein pendulum length must be made for it to keep perfect time?
1. 1 answer
2. 614 views
Fe3+ + I1- �¨ Fe2+ + I21. Balance the equation 2. Which element is being oxidized? 3. Which element is the reducing agent?
1. 4 answers
2. 2,888 views
The heart shaped card is made by placing a square card and two semicircles together. What is the area of the card.each side of
1. 5 answers
2. 1,007 views
a copy machine makes c copies in m minutes according to the equation c=60m. what is the unit rate of copies per minute?I think
1. 1 answer
2. 388 views
a copy machine makes c copies in m minutes according to the equation c=60m. what is the unit rate of copies per minute?I think
1. 7 answers
2. 1,148 views
a number line below-5 -4 -3 -2 -1 0 1 2 3 4 5 Which of the expressions below represent the distance between -4 and 5 on the
1. 4 answers
2. 3,191 views
Tina solved for the decimal value 0f(3/5*18) and got an answer of 5.4. Four of her classmates argued that her answer was not
1. 4 answers
2. 468 views
a fair coin is tossed in the air 4 times. if the coin lands heads up the first three tosses, what is the probability the coin
1. 4 answers
2. 630 views
An insect inside a bus flies from the back toward the front at 2 m/a. The bus is moving in a straight line at 2m/a. What is the
1. 2 answers
2. 702 views
The temperature at 6,000 m altitude is 11 degrees Celsius. At 4,000 m, the temperature is at 2 degrees Celsius. How much colder
1. 1 answer
2. 405 views
Hello, what is a common theme between the Shakespeare's Romeo and Juliet, To Kill a Mockingbird, and Roahl Dahl's Lamb to the
1. 1 answer
2. 474 views
The first two terms in the expansion of (1+ax/2)^10 + (1+bx)^10 in ascending powers of x., are 2 and 90x^2Given that a is less
1. 4 answers
2. 778 views
What's the difference among a simple sentence, complex, compound, and compound-complex. I always have a difficult time knowing
1. 2 answers
2. 596 views
A metal bar having a mass of 212 g is heated to 125.0°C and then dropped into 375 g of water at 24°C. After a while the
1. 2 answers
2. 918 views
Since a hydrogen atom consists of one proton and one electron, it should have a mass of 1.763 x 10^-24 grams. Using unit
1. 3 answers
2. 844 views
Hi! I know I asked this before, but I still don't understand how to solve the problem:"Since a hydrogen atom consists of one
1. 2 answers
2. 524 views
For how many values of n where n is a positive integer less than 10 is n+1/2 an integer?A) None B) One C) Three D) Four E) Five
1. 5 answers
2. 882 views
Which positive ion (cation) has the smallest radius? Please help! Thanks!
1. 1 answer
2. 385 views
Which anions have the largest and smallest radii? Thank you!!
1. 2 answers
2. 624 views
Jordan throws a golfball straight up from the top of a building 50 meters high. The initial speed of the golfball is 20 m/s and
1. 1 answer
2. 435 views
How can I find the area of an angle?" How do you respond?
1. 1 answer
2. 341 views
Larry and Gary are discussing whose garden has the most area to plant flowers. Larry claims that all they have to do is walk
1. 4 answers
2. 1,867 views
How many moles of atoms are contained in 5.60 grams of Sulfur? Can someone help me understand how to work out other problems
1. 3 answers
2. 1,019 views
how many moles of atoms are contained in7.654 x 10^32 atoms of Ga ? Thank you!
1. 1 answer
2. 388 views
A 4.43 gram sample of phosphorus was burned in air to produce 10.15 g of an oxide. What's the empirical formula of this
1. 3 answers
2. 500 views
Points P and Q are tries toom points on segment AB. If AQ =7x+6 and PQ= 3x+5, find all possible values for the length of AB.So
1. 1 answer
2. 402 views
calculate the average kinetic energies of CH4 and N2 molecules at 273k and 546k
1. 2 answers
2. 1,352 views

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