Saturday
April 18, 2015

Posts by Kate


Total # Posts: 1,748

TRIGONOMETRY
Can you check my work, please? This is for a trig study guide for my final next week. I'd like to know if I'm doing this right. :) 2. The polar coordinates of a point are given. Find the rectangular coordinates of each point. a. (5,(π / 4)) b. (-2,(π / 6)) ...
May 16, 2013

TRIGONOMETRY
I tried converting (0,3) myself, but I can't seem to get your answer. What am I doing wrong? b. (R, theta) R = sqrt(x^2 + y^2) R = sqrt(0^2 + 3^2) R = 3 theta = arctan y/x theta = arctan 3/0 theta = 1.249 = (3, 1.249)
May 16, 2013

TRIGONOMETRY
Aaah, so those are the formulas! I'll remember those. That helps so much! You're awesome! Thank you for not just giving me the answers. The point of a study guide is to study and know how to get to an answer. Usually people just give the answer without showing the ...
May 16, 2013

TRIGONOMETRY
Can you please help me with this question on my study guide for my trig final? Thanks! I'd also appreciate if you can check out my other postings and check my work for some other study guide questions. I want to make sure I'm ready for my final. :) 3. The rectangular ...
May 16, 2013

Math
A mixture of petrol and oil for a two stroke lawn mower contains 85% petrol, how much oil is required for 18 litres of the fuel mixture?
May 16, 2013

Physics helpp
Newtons 2nd law The force of earths gravity is about 10 N downward. Whats the acceleration of a 15kg backpack if lifted with a 15N force??
May 14, 2013

Physics
And how do i find the mass if its missing? Formula?
May 14, 2013

Physics
Newtons second law What net force acting on a 14kg wagon produces an acceleration of 1.5 m/s^2?
May 14, 2013

history
Sorry it was a typo, but thank you.
May 13, 2013

history
What does this quote mean? "It is honorable to be raised to a throne than to be born to one. Fortune bestows (gives) the one, merit obtains to other." -Francesco Petrarch
May 13, 2013

English
Does this sentence have correct parallelism? Using steam power helped people spin cotton and grind flour.
May 10, 2013

Social
Thanks alot
May 9, 2013

Social
What are the goal and practices of mormons?
May 9, 2013

Physics
1- you push a coin across a tabble, the coin stops. How does this motion relate to balanced and unbalanced forces?
May 7, 2013

Physics
Which causes an object in motion to stay in motion? A) friction b) gravity C) inertia D) velocity Its not friction..
May 7, 2013

science
what happens to the G-force as the speed of the centrifuge increases?
May 5, 2013

Chemistry
why is it important to know accurately the mass of water used in a calorimeter?
May 5, 2013

Statistics
The Education Testing Service conducted a study to investigate differences between the scores of males and females on the SAT. The study identified a random sample of 562 females and 852 males that had achieved the same high score on the math portion of the test. That is, both...
May 3, 2013

statistics
A firm having 4000 employees took a random sample of 25 in order to estimate their average annual state tax payment with 99% confidence. If the results were X = $640 and s = $20, what is the best interval estimation?
May 3, 2013

chemistry
Methane gas is burned releasing Carbon Dioxide into the atmosphere. How much CO2 (g) is released if 78.5 Liters of Methane is burned? CH4 + O2 --> CO2 + H2O
May 1, 2013

Calculus
A particle moves along the curve y = sqr(1+x^3). As it reaches the point (2,3), the y-coordinate is increasing at a rate of 4cm/s. How fast is the x-coordinate of the point changing at that instant?
May 1, 2013

art history
What is the Etruscan influence on Roman, Byzantine and Romanesque visual culture?
April 30, 2013

English
1. If you are filled with anticipation about an event, you are (1 point) ***looking forward to it. planning to avoid it. hoping to delay it. 2. Read the following excerpt from Sky: We finally reached Enkhuizen, an ancient harbor town, where the brisk wind from the sea was ...
April 28, 2013

Science question
It is right microwave. Only certain types of microwaves use batteries. All phones, radios, and definately flashlights use batteries.
April 23, 2013

math
the product of 2 consecutive integers is 156. find the integers. I found them mentally 12 and 13 but, how do I find them while solving?
April 18, 2013

math
thanks
April 11, 2013

math
If the first of 1000 consecutive whole numbers is odd, their sum must be a) even b) odd c)prime d) negative Help?
April 11, 2013

Math
Two investments are made totaling $4800. In the first year they yield a total of $412 in simple interest. Part of the money is invested at 8% and the rest at 9%. Find the amount invested at each interest rate.
April 11, 2013

Chemistry
If you wanted to prepare 50.0 mL of hydrogen, collected over water at 25 C on a day when the barometric pressure was 730 torr, what mass of aluminum would you react with a hydrochloric acid? (Balance the equation first.) ___Al(s)+___HCl(aq)=___AlCl3(aq)+___H2(g)
April 8, 2013

Chemistry
A sample of iron reacted with hydrochloric acid. The liberated hydrogen occupied 40.1 mL when collected over water at 27 C at a barometric pressure of 750 torr. What is the mass of the sample of iron? (Because of the collection of gas over water, the vapor pressure of the ...
April 8, 2013

Chemistry
What volume of hydrogen, measured at 25 C and 1.00 atm can be produced by dissolving 5.0 g of magnesium in hydrochloric acid? (Write and balance the equation for the reaction first.)
April 8, 2013

Chemistry
Instead of a strip of pure Mg ribbon, you are accidentally given a strip of an aluminum-magnesium alloy. You calculate the mass of the strip as above. Would the mass of the strip be higher or lower than expected? Write the appropriate chemical equations (one equation for the ...
April 8, 2013

Chemistry
If the strips of MG ribbon are coated with white MgO, would this cause the mass of Mg that you calculate to be too high or too low? Why?
April 8, 2013

Chemistry
If your partner did not take into account the vapor pressure of water when calculating the moles of hydrogen produced, would the mass of Mg that was calculated at the end of the experiment be too high or too low? Why?
April 8, 2013

Social Studies
OMG! I'm in Connexus! XD
April 6, 2013

la
shoud students who fail their classes be retained and have to repeat the grade ?
April 2, 2013

la
shoud students who fail their classes be retained and have to repeat the grade ?
April 2, 2013

chemistry
Use the molar volume to find the volume, in liters, of 6.40g of O2 at STP.
April 1, 2013

Pre-Algebra
How many different ways can you choose 3 frozen yogurt toppings from 20? 6,840 1,140 60* 2,260 I think it is 60 because 3*20 however not positive.
April 1, 2013

Finance
They will need 200,000 in 18 years and they can expect a rate of return of 6 %. How much will they need to invest annually. I would have set it up and gotten $70068.76 but then do you divide by 18?
March 28, 2013

science
During condensation, what must be changed, temperature or heat energy?
March 25, 2013

chemistry
N2(g)+H2(g)-NH3(g) Calculate the volume of ammonia gas produced when20cm3 of nitrogen gas was reacted with an excess of hydrogen gas
March 25, 2013

physics
A bird wants to rech its nest that is located 53 meters (35 degrees south of west) from where it is perched. If the maximum speed that the bird can fly with respect to the air is 12m/s and there is a wind blowing from a direction of east 35 degrees south at a speed of 8.1 ...
March 24, 2013

maths
(b) A stone is thrown straight up with velocity 14 m s-1 Calculate (i) The time taken for the stone to reach the top of its motion (ii) The time taken for it to reach the ground again (iii) The maximum height it reaches (iv) What is the velocity of the stone at height 8.0 m?
March 13, 2013

maths
(a) A car accelerates from 0 to 30.0 m s-1 in 6.0 seconds, travels at a constant 30.0 m s-1 for 21.0 seconds, and then brakes to a stop in 3.0 seconds. (i) Draw a velocity-time graph illustrating this motion (ii) Calculate the acceleration (assumed constant) in each section of...
March 13, 2013

maths
(c) Given that 1 inch = 2.54 cm exactly, express the speed of light, 3.00 „e 108 m/s, in (3 marks each) (i) ft/ns (ii) mile/s
March 13, 2013

maths
onvert the following to scientific notation: (i) the distance to the sun, 149 500 000 000 m (ii) the wavelength of yellow sodium light, 0.000 000 5893 m (iii) the radius of an atom, 0.000 000 000 2 m
March 13, 2013

maths
Evaluate (3.00¡Á¡¼10¡½^12 )¡Á(2.40¡Á¡¼10¡½^(-20) ))/(8.00¡Á¡¼10¡½^(-1)
March 13, 2013

Math
How do you solve negative exponents?
March 10, 2013

Math
How do you solve negative exponents?
March 10, 2013

chemistry
A sample of oxygen that occupies 1.00x10^6 mL at 575 mm Hg is subjected to a pressure of 1.36 atm. What will the final volume of the sample be if the temperature is held constant? How would I set up this equation?
March 4, 2013

science
Q: which of these conditions is least likely to cause a species to become extinct due to environmental changes? A: -less genetic variation -more genetic variation -specific food preferences -more competition for food
March 3, 2013

HELP! LANG ARTS??
yes it is definately B
February 27, 2013

science
HeLp Me!!!!!!
February 23, 2013

science
what are three opposites or non-examples of fossil records?
February 23, 2013

Math
Math please help
February 22, 2013

Helpppp
It's college math
February 22, 2013

Helpppp
Find the apr to the nearest half percent for the following loan Amount financed $3400 Finance charge $470 Number of monthly payments 36 Please help
February 22, 2013

Finance
Find the finance charge in the open end charge account. Assume interest calculated is on the unpaid balance of the account Unpaid balance $611.80 Monthly interest rate 1.1%
February 21, 2013

Calculus
Differentiate with respect to theta Y=((sin3theta)(tan3theta))^12
February 10, 2013

please help!
How do you believe computer mediated communications may affect the future of human communications? PLEASE HELPP !!!!
January 27, 2013

please help!
How do you believe computer mediated communications may affect the future of human communications? PLEASE HELPP !!!!
January 27, 2013

please help!
Thank You Very Much !! I kinda of got the idea now . Thanks soo much !
January 27, 2013

please help!
I checked it out and so far i wrote. but i need 200-400 words !! Please Help In my opinion, I believe it is unlikely for humans to avoid or completely stop attribution errors. One reason why is because humans are naturally made to assume things in which we do not know the ...
January 27, 2013

please help!
Oh Thanks , I Did not see it.
January 27, 2013

please help!
How do you believe humans can, best, avoid "attribution" errors?
January 27, 2013

please help!
How do you believe humans can best,avoid attribution errors ?
January 27, 2013

Speech
I don't know how to start and also I don't understand the topic I have to write about.
January 27, 2013

Speech
Post a one hundred word comment on how you believe computer mediated communications may affect the future of interpersonal communications . I DO NOT KNOW HOW TO DO THIS! PLEASE HELP
January 27, 2013

Speech
copy paste what?
January 27, 2013

Speech
How do I post a one hundred word paragraph on how I believe computer mediated communications may affect the future of interpersonal communications ?
January 27, 2013

Math
Sarah can make 6 bracelets per half hour. How many bracelets can she make in 1 hour? Find the factor for the conversion, pints to quarts .
January 14, 2013

Writing
How can I write a sentence with the word declare, and has to have 10 syllables?
January 9, 2013

Algebra
how?
January 9, 2013

Algebra
Write an equation in slope-intercept form of the line that passes through the given point and is parallel to the graph of the given equation. (4,2; x= -3
January 9, 2013

Anyone Please Help!
thanks
January 2, 2013

Anyone Please Help!
A plane on a search mission flew east from an airport, turned, and flew west back to the airport. The plane cruised at 300km/h when flying east, and 400km/h when flying west. The plane was in the air for 7 hours. How far from the airport did the plane travel?
January 2, 2013

Math (Ms. Sue Please help!)
A plane on a search mission flew east from an airport, turned, and flew west back to the airport. The plane cruised at 300km/h when flying east, and 400km/h when flying west. The plane was in the air for 7 hours. How far from the airport did the plane travel?
January 2, 2013

math (algerba 1)
I still don't understand.
January 2, 2013

math (algerba 1)
I have a worksheet called puzzle 21 Super Challenge. It's from Crossmatics, Dale Seymour Publications and it's page number is 21. Anyways, I don't understand what it means when it says see 4-across. What does that mean?
January 2, 2013

math (algerba 1)
A motorboat can travel upstream on a river at 18km/h and downstream at 30km/h. How far upsteam can the boat travel if it leaves at 8am and must return by noon?
January 2, 2013

Math
A plane on a search mission flew east from an airport, turned, and flew west back to the airport. The plane crised at 300km/h when flying east, and 400km/h when flying west. The plane was in the air for 7 hours. How far from the airport did the plane travel?
January 2, 2013

math
thanks. I though because you added 70t and 80t there would be 2ts. But no.
January 2, 2013

math
Never minds. I see my mistake. It's really 6 hours.
January 2, 2013

math
Two trucks left buck's trucks traveling in opposite directions. One truck traveled at a rate of 70km/h, the other at 80km/h. After how many hours were the trucks 900km apart? I got 3 hours as my answer, but I dont think that's right...
January 2, 2013

math
neverminds. I got it.
January 2, 2013

math
Reiny, how can you show me how to do the last part wirten out? Thank you so much!
January 2, 2013

math
ok
January 2, 2013

math
Also, how far had steve traveled when his brother overtook him?
January 2, 2013

math
thanks
January 2, 2013

math
Steve McSpoke left home on his bicycle at 8am, traveling at 18km/h. At 10am, Steve's brother set out after him on a motorcycle, following the same route. The motorcycle traveled at 54km/h. How long had steve traveled when his brother overtook him?
January 2, 2013

math
yes thats it.
January 2, 2013

Science* Please Help Me !
Thank You Very Much !!!! Rylee your the best
December 19, 2012

Science* Please Help Me !
How would cell division help heal a broken bone? Why do cuts and disappear when in the process of cell division? What is the main purpose for cell division?
December 19, 2012

univ. physics
An Otto engine has a maximum efficiency of 33.1 %; find the compression ratio. Assume that the gas is diatomic.
December 13, 2012

univ. physics
A heat pump has a coefficient of performance of 4.5. If the heat pump absorbs 46.1 cal of heat from the cold outdoors in each cycle, what is the amount of heat expelled to the warm indoors? (in cal)
December 13, 2012

math helpp!!!
Bernie put in a garden in her back yard. The garden has a perimeter of 265 feet. She wants to know the total surface area of the garden and all she knows is the perimeter and that the width is 20% or (1/5) of the length. (Remember 20% and the fraction 1/5 is the same decimal ...
December 13, 2012

Algebra
Can you help me set this up? Mr. Smith could ride his 10-speed bike 4.8 miles to his mom's house in 11 minutes. His return trip home took 14 minutes. The times are different due to there being a slight downhill slope on part of the trip to his mom's house. If Mr. Smith...
December 12, 2012

Algebra
Log5(x+3)(x-2)=log5(14) (X+3)(x-2)=14 X^2+x-6=14 X^2+x-20=0 (X+5)(x-4)=0 X=-5, x=4 -5 is not a true solution because you can't take the log of a negative number X=4
December 12, 2012

Math
Thank You Very Much !
December 11, 2012

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