Monday
December 5, 2016

# Posts by Crystal

Total # Posts: 817

chemistry
2C2H6 + 7O2 --> 4CO2 + 6H20 given 7.5 X 10 to the 3rd of C2H6 how many grams of CO2 is emitted the 7.5 x 10 to the third is 7500 what do i do to figure out the rest
December 3, 2016

Chemistry
Phthalic acid, H2C8H404, is a diprotic acid used in the synthesis of phenolphthalein indicator. Ka1= 1.2x 10^-3, and Ka2 = 3.9 x 10^-6. a) Calculate the hydrongen-ion concentration of a .015 M solution. b) What is the concentration of the C8H4O4^2- ion in the solution?
November 29, 2016

Math
A recipe for 2 1/2 dozen cookies calls for 1 7/8 cups of flour. How many cups of flour are needed to make 1 1/3 dozen cookies?
November 19, 2016

A plumber has a very long piece of pipe that is used to run city water parallel to a major roadway. The pipe is cut into two sections. One section is 12 ft. shorter than the other. If 34 of the length of the shorter pipe is 120 ft., how long is the longer piece of pipe? Solve ...
November 6, 2016

Maths
Find the Amount when... P=1000 N=2 1/2 years R=10% Compounded half yearly
October 5, 2016

Algebra
The perimeter of a rectangle is 80 in. The length is 6 inches more than the width. What are the dimensions of the rectangle
September 24, 2016

Physics
NOPE NOOOOOOOOOOOOO
September 8, 2016

Physics
A student travels 300m towards North and then 400m towards East to reach his school. Calculate the distance of his school from his home.
August 30, 2016

Riddle
I have two bodies, joined as one; Watch this trick: Ill flip, stand still, and run. What am I?
August 26, 2016

Math
What means the samethings as 12ten and 17 ones
August 16, 2016

math
I still don't really understand though due to the /
May 4, 2016

math
Mdm Lee gave Nathan and Jasper some money on Friday.On Saturday,Nathan gave 1/3 of the amount he had to Jasper.On Sunday,Jasper gave 1/3 of the amount he had to Nathan.In the end,Nathan had \$96 and Jasper had \$120.How much did each of them have at first?
May 4, 2016

stat
** I already finish these questions Can you answer so I can compare my final answers w/ yours.** Suppose that a principal of a local high school tracks the number of minutes his students spend texting on a given school day. He finds that the distribution of minutes spent ...
April 22, 2016

algerbra
The function h = -t2 + 95 models the path of a ball thrown by a boy where h represents height, in feet, and t represents the time, in seconds, that the ball is in the air. Assuming the boy lives at sea level where h = 0 ft, which is a likely place the boy could have been ...
April 11, 2016

Social Studies
Answers are B C D You ll get 100 cause that's what i put and got a hundered
March 28, 2016

Algebra
a spinner used for a game is divided into sections: yellow, green, and orange. Janie spins the spinner 20 times. The spinner lands on green 8 times. What is the experimental probability that the spinner does not land on green?
March 21, 2016

Write the augmented matrix, and then solve the system, using Gauss Jordan elimination on the augmented matrix. x + 2y - z = 4 -2x + y - 4z = -6 4x - 3y + 2z = -10
March 7, 2016

Evaluate the sum ∑3 =0 (-1)k × 2k-1/2k-1 6
March 7, 2016

trigonometry
A plane flies due south from an airport for 92 miles, and then turns and goes S63°W for 50 miles. How far is the plane from the airport (to the nearest tenth of a mile)? What direction is the plane from the airport (to the nearest tenth of a degree)? (That is, find the ...
March 7, 2016

Math
A statement Sn about the positive integers is given. Write statements S1, S2, and S3, and show that each of these statements is true. Show your work. Sn:    2 + 5 + 8 + . . . + ( 3n - 1) = n(1 + 3n)/2
March 4, 2016

algebra question
A hand-woven rectangular rug measures x ft long and 2 4 5ft wide. Write an expression to represent the perimeter of the rug.
February 11, 2016

Math
Interest is a concept familiar to most people: every credit card in existence has a term called annual percentage rate (APR), which is an interest rate. Suppose you charged \$1,000 to a credit card that has a minimum payment each month equal to the interest owed. Can you figure...
February 8, 2016

finite
You select 9 cards randomly from a deck of 52 cards. What is the probability that all of the cards selected are face cards (i.e. jacks, queens, or kings)?
February 3, 2016

LA
Anna and Iggy you shut up. You should listen for once. Why are you defending this site? You 2 are such idiots, you will never succeed in life if you keep cheating of this site. This is not even a joke where do you get them from? If your education is your business why are you ...
January 14, 2016

Health Help Me!!
Thanks ur right @AWESOME PRUSSIA
January 10, 2016

Typo (Test Marked)
Okay i had a typo i for got to add stars..i had emojis next to it that didn't show up What number is 73% of 215? (1 point) 215 = 0.73n n = 0.73 × 215 * 0.73 = n × 215 215 = 73n 2. What percent of 94 is 23? (1 point) n/94 = 23/100 23/94 = n/100 * 94/n = 23/100 ...
January 6, 2016

Art
Im right is correct. I got 100% thank you so much!
December 14, 2015

Math
If a bag contains 12 apples, 4 bananas, and 8 oranges, what is the part to whole ratio of bananas?
December 10, 2015

Thanks sooo much for helping me ms sue and reed. I really appreciate it!. :)
December 2, 2015

oh ok. So no I don't think they will continue to have economic problems because if only the problem was in the nuclear program which is now getting eased then yes they will most likely improve because other countries and places will be willing to help them and stop ...
December 2, 2015

Do you think Iran will continue to have economic problems? I think yes. Because even though they have a lot of oil they still have many political problems. Like they don't treat their women right. No one can dis agree with the government with out getting hug or something. ...
December 2, 2015

Okay can you help me with one more question
December 2, 2015

Can you check my answer What do you think the political and economic future of Cyprus will be like? The future of Cyprus will be a future governed by a new and different governmental and political structure. Like focusing on the economy instead of the politicial problems on ...
December 2, 2015

math
Determine whether the sequence is a Fibonacci-type sequence. If it is, determine the next two terms of the sequence. -4, 5, 1, -3, -2
November 24, 2015

Physics
So this is the problem: A comet is in an elliptical orbit around our Sun. At its point of closest approach, it is moving at 6.3x10^4 m/s and is 4.2x10^10m away from the sun. When it is at the farthest distance, 7.5x10^12m away, how fast is it going? This is what I did K1+U1=K2...
November 4, 2015

Math
October 27, 2015

Math
Trina works after school and on weekends. She always works three days each week. This week she worked 2 3/4 hrs on Monday. 3 3/5 hrs on Friday and 5 1/2 hrs on Saturday. Next week she plans to work the same number of hrs as this week but will work the same number of hrs each ...
October 27, 2015

pre-cal
find the value of K such that (x+1) is a factor of x^3-kx^2+x+5
October 13, 2015

pre-cal
find the constant c such that the denominator will divide evenly into the numerator x^4+10x^2+c/x+i
October 13, 2015

pre-cal
Write a polynomial equation with integral coefficients that has 1/2 and 2i as solutions
October 6, 2015

PHYSICS
While following the directions on a treasure map, a pirate walks 25.2 m north, then turns and walks 4.4 m east. What is the magnitude of the single straight-line displacement that the pirate could have taken to reach the treasure? Answer in units of m.
September 15, 2015

math
hi im 33 years old and i have decided to go back and get my ged i don't understand order of operations (3+6).(5+4)divided by 3-7 i just started my ged classes lastnight can you help me ?
September 2, 2015

Please explain: Ursula wrote the sum of 5.815 + 6.021 as a sum of two mixed numbers. What sum did she write? Compare the sum of the mixed numbers to the sum of the decimals? Please explain.
August 31, 2015

LA
Bill gates maybe you should listen to randy. Besides why are you being a jerk to him? He was just saying that its a test. I don't know why you all are always defending this site! YOU PEOPLE ARE SO FREAKING STUPID!!!
May 7, 2015

Math
Thank so much!
May 5, 2015

Math
Hi(-: A newspaper editor wants to know whether people who buy the newspaper like the paper’s new format. He prints an alphabetical list of all the employee names and asks every fifth person on the list. Is the sample likely to be biased or unbiased? Explain your answer. I...
May 5, 2015

physics
A bicycle tire is 82 inches across and has a diameter of 26 inches.
April 16, 2015

2 line segments intersect to form an angle that has a measure of 50.7 degrees. What is the measure in degrees of an angle that is supplementary to this angle?
April 15, 2015

math
Michael ate 1/4 of a pizza and his brother ate 3/8 of the same pizza . How much of the pizza was left?
March 23, 2015

HIS202
During the latter part of the 19th century, Republicans were particularly strong in the _____ states?
March 11, 2015

chemistry
Predict if a precipitate will form when 20.00 mL of the 50% saturated solution is mixed with 20.00 mL of 0.0100M of the following solutions.? the saturated solution is : BaCO3, it has the Ksp of 5.1 x 10^-9 the solubility is 7.1 x 10^-5 M. I don't know how to do this. I am...
February 17, 2015

math
Brown earns a dollar for every candy he sells. If he sells 30 candies, how much will he earn? Please show me the work.
February 10, 2015

US History
its d. Thanks i suppose.
January 27, 2015

US History
B then Since he defended it as something postive
January 27, 2015

US History
wait what?
January 27, 2015

US History
Which of the following 19th century developments most undermined the racial philosophy John C. Calhoun Outlined in the excerpt from his 1848 Senate speech? A The establishment of the Ku Klux Klan B The enforcement of the black codes C. The suspension of habeas corpus D The ...
January 27, 2015

math
8/1 X 3/5 = 24/5=5
January 25, 2015

math
HI SUP
January 25, 2015

art help
December 8, 2014

Physics
A runner moving at a speed of 7.7 m/s rounds a bend with a radius of 21 m. What is the centripetal acceleration of the runner? My teacher doesn't explain anything very well and I don't understand how to figure it out.
November 5, 2014

math
A biker traveling with a velocity of 80 feet per second leaves a 100 foot platform and is projected directly upward. The function modeling the projectile motion of the biker is s(t)=-16t^2+80t+100,where s(t) is the height and t is the number of seconds the biker is in the air...
October 29, 2014

It is greater than 43 and less than 52. If you add the digits, the sum is 8. Write the number word
October 16, 2014

math/ unit rates
A fertilizer covers 5/8 square foot in 1/4 hour.
September 28, 2014

math/ unit rates
I try to do it but it doesn't look right.
September 28, 2014

math/ unit rates
A garden snail moves 1/6 foot in 1/3 hour
September 28, 2014

math/ unit rates
Kenny reads 5/8 page in 2/3 minute
September 28, 2014

unit rates
Thank you
September 28, 2014

unit rates
Julio walks 3 1/2 miles in 1 1/4 hours
September 28, 2014

Algebra II Honors
There are some interesting special cases in which the graphs turn out to be parallel, perpendicular, or coincident with the coordinate planes or axes. Sketch a graph of each of the following equations by drawing their traces as in Problem 1. Then tell what the graph is ...
September 24, 2014

Accounting
Dr. Rees: Ruth, good to see you again. Why didn’t you call me when you were in Denver? We could have had dinner together. Dr. Turner: Actually, I never made it to Denver this year. My husband and kids went up to our Vail condo twice, but I got stuck in Fort Lauderdale. I ...
September 14, 2014

MATH HELP!!
Is it 641,310
August 20, 2014

Math
5 inches, 12 inches
July 22, 2014

Maths
Alison discovered that she had spent 2/5 of her money, leaving her with £21. What amount of money did she originally possesses?
May 12, 2014

umm its actually geosphere I took the test
April 5, 2014

managerial economics
An article in Business Week reported the discovery of a new processing technology that makes it economically feasible to turn natural gas into liquid petroleum that yields superclean gasoline, diesel fuel, or any other product derived from crude oil. This discovery represents ...
April 1, 2014

Finance
Fiona Plans To Invest \$500 Later Today. She Wants To Know To What Amount Her Investment Will Grow In 20 Years If She Earns 12 Percent Interest Compounded (a0 Annually, (b) Quarterly, And (c) Monthly
March 29, 2014

History 12
What does lenin have to do with Tsarism, World War 1, March revolution and the provisional government, November Revolution, the civil war, War Communism, national Economic Policy, Trotsky, Stalin, and the Comintern?
March 14, 2014

Math
Loon lake has a "killer plant" problem similar to Ghost Lake. Currently, 5000 square feet of the lake is covered with the plant, The area covered is growing by a factor of 1.5 each year. Complete the table to show area covered by the plant for the next 5 years. 0 = ...
March 10, 2014

SCIENCE
just answer the damn question @sam @ pizza dude whatever c.
February 26, 2014

Math
Tressa's closet is 5 feet long, 4 feet wide, and 7 feet high. What is the volume of Tressa's closet. A. 140 feet B. 140 square feet C. 140 cubic feet
February 20, 2014

PRE-Algebra
capacity of tank A/ratio of capacity of tank A multiplied by capacity of Tank B equation: 550/11 x 15 50 x 15 750
February 18, 2014

physical
a 50 kg object moving at 12 m/s has a momentum of 600 kg times g m/s . what is the mass of an object moving at 4 m/s that has the same momentum?
February 15, 2014

physical
what is the size and direction of the final velocity of the two cars when a 0.4 kg toy train car moving forward at 3 m/s collides with and sticks to a 0.8 kg toy car that is traveling the opposite direction of -2 m/s
February 15, 2014

Chemistry
Magnesium metal reacts with phosphoric acid to produce hydrogen gas. If 50 g of phosphoric acid is used, how much magnesium metal is needed? How much hydrogen gas is produced?
February 5, 2014

Statistcal Analysis
I need some help with figuring out the ratio-to-moving average. Can someone help me? Here's the problem: Sales of roof material, by quarter, since 1994 for Carolina Home Construction, Inc. are shown below (in \$000): Quarter Year I II III IV 1994 210 180 60 246 1995 214 216...
January 25, 2014

science help plzzz
Shutup (@connectionsedu) @Jack Thanks
January 17, 2014

Math
A ball pit contains 10 yellow balls and 14 green balls. What is the probability of randomly picking 3 green balls (replacing them), from the pit? 3/24
January 15, 2014

Science
I just did the test and put in those answers. Here are the correct answers. A B B D C B C A B
January 15, 2014

Math
104 students responses 21 liked sledding as their favorite winter activity if 500 people had. Responded, how many would have been expected to list sledding as their favorite winter activity? Round to the nearest whole person
January 14, 2014

statistics
I've been trying to work out these problems for about an hour.. I was given multiple choice answers but cannot get my answers even near the ones that were given to me. Here they are First problem: A. z = 0.75, fail to reject H0. B. z = 1.94, fail to reject H0. C. z = 1.94...
December 27, 2013

statistics
I really need help with my statistical analysis... i cant understand it. Here are the questions A sample group was surveyed to determine which of two brands of soap was preferred. H0 :p = 0.50; H1: p is not equal to 0.50. Thirty-eight of 60 people indicated a preference. At ...
December 27, 2013

Math
How much must be invested to have 25,000.00 after 5 years in an account drawing 7% interest compounded continuously?
December 9, 2013

statistics
I have just a couple questions I have trouble understanding... can someone please help me? The data below indicate the rankings of a set of employees according to class theory and on-the-job practice evaluations: Theory 1 7 2 10 4 8 5 3 6 9 Practice 2 8 1 7 3 9 6 5 4 10 What ...
December 4, 2013

Physics
A soccer ball iskicked with an intial horizontal speed of 6 m/s and initial vertical speed of 3.5 m/s. Assume that the projection and landing height are the same, and neglect air resistance. Calculate the following a) the ball's projection speed and angle b)the ball's ...
November 7, 2013

math
Charlie has agreed to mow his neighbor’s lawn each week and will baby-sit some hours. If he makes \$100 or more each week, his parents will charge him rent. How many hours should Charlie agree to baby-sit each week to avoid paying rent?
October 4, 2013

Math
In 1990, the population of Cheyenne, Wyoming, was 73,142. By 2000, the population had increased to 81,607. Write and solve an equation to find, the increase in Cheyenne’s population from 1990 to 2000. Mercury’s surface temperature has a range of 600 digress. This ...
September 19, 2013

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