Thursday
June 30, 2016

Posts by ruby

Total # Posts: 218

algebra 1
1. MULTI-STEP PROBLEM There are 5743 known amphibian species in the world. Of these, 1856 species are judged to be at risk of extinction, and another 113 species may already be extinct. a. Find the probability that an amphibian species chosen at random is at risk of ...
May 17, 2016

Math
Obtuve
May 12, 2016

maths
The management committee of Oxford school has indicated its desire to accept only 40% of all continuing undergraduate based on the results of the end of second semester examinations.the mean score of the examination is 500 and a standard deviation of 100.find the cut off score...
May 4, 2016

maths(Please help me out)
A survey of mobile call interconnectivity indicates that the average time it takes to connect calls from one network to the other is 25 seconds.Assume the variable is approximately normally distributed and the standard deviation is 4.5 seconds.if 80 calls are randomly selected...
May 4, 2016

math(pls help me)
1.The management committee of Zenith has indicated its desire to accept only 40% of all continuing undergraduate based on the results of the end-of-second semester examinations.the mean score of the examination is 500 and standard deviation of 100.Find the cut off score for ...
April 5, 2016

English
how can we compare and contrast explanation of "How Beaver Stole Fire" and "stealing Fire from Zeus".
March 30, 2016

Maths
Assuming the earth to be a sphere of radius 6370 km.If seventy five percent of the earth's surface is covered by water, then find how many square kilometres is area of the land.
March 7, 2016

Math: Algebra
By what percent will a fraction increase if its numerator is decreased by 10% and its denominator is decreased by 50%?
March 6, 2016

English
I have a few questions that I'm stuck on. 1. Identify how the pronoun is used in the sentence. Just today Terry bought a picture for her. direct object indirect object object of a preposition*** (I think this is the answer because of the preposition for her, Terry is the ...
March 2, 2016

math (check answers)
just realized i put my name in the subject and the subject in my name, oops!
February 20, 2016

analytical physics chemestry lab
You are provided with a 0.5M solution of NaCl. You require a working solution of 0.004M. Describe how you would prepare this working solution, including all steps and calculations. Hint: You want to use the least amount of reagents and consumables, serial dilutions.
January 27, 2016

ALGEBRA
Sarah took the advertising department from her company on a round trip to meet with a potential client. Including Sarah a total of 66 people took the trip. She was able to purchase coach tickets for ​$150150 and first class tickets for ​$11601160. She used her ...
January 24, 2016

English
Did you ever get the answer?
December 2, 2015

English
Haha flvs? Right. Me too.. I'm taking this quiz right now
December 2, 2015

Math
Thank You
November 4, 2015

Math
For f(x) = 0.01(2)^x, find the average rate of change from x = 2 to x = 10. A.1.275 B.8 C.10.2 D.10.24
November 4, 2015

Physical science
Which type of graph best shows data that are parts of a whole?
October 29, 2015

algebra
tommy is playing with a kite, and it flies 80 feet high with 100 feet of string released. what is the horizontal distance from tommy to the kite?
October 26, 2015

English
Probably
October 7, 2015

Math- Mixed Numbers
Alright so is the way I explained it correct?
October 7, 2015

Math- Mixed Numbers
1. White 17/4 as a mixed number. Hi, could someone please explain how to do this? Correct me if I’m wrong but do I try to multiply 4 x how many times I can before it goes to 17 and the number I get is the whole number and the newmerator is the numbers left? Explain!!
October 7, 2015

Applying Rational Number Operations
I’m in 7th grade too =)
October 7, 2015

chemistry
The rate constant of a reaction is 6.2 x 10^-3s-1 at 25 degrees C, and the activation energy is 33.6 KJ/mol.. What is k at 75 degrees C? Enter your answer in scientific notation.
September 13, 2015

math
a square carpet covers an area of 64 ft ^2. what is the length of each side of the carpet?
September 10, 2015

math
You are skier A, the first skier in a skiing event with three other skiers. Compared to your time, skier B is slower, by a time of +00:28. Skier C has a time of +02:13, and skier D has a time of -01:24. Who is the fastest skier
September 2, 2015

math
You are skier A, the first skier in a skiing event with three other skiers. Compared to your time, skier B is slower, by a time of +00:28. Skier C has a time of +02:13, and skier D has a time of -01:24. Who is the fastest skier.
September 2, 2015

Math
What is the square root of 23 subtracted from square root of 37 divided by square root of 23 added to square root of 37??
August 30, 2015

payroll acct
Mary makes $12.50 per hr she worked 44.5 hrs so i did 40 times 12.50 then 4.5 times $18.75 the added the totals But her cum. wages was $27,675.13 i need to know the taxable wages for OSADI and MEDICARE what is the amt being taken out for OASDI and MEDICARE
August 28, 2015

algebra
is this correct?: -4^4= -256 (-5)^2= 25 (-3)^5= -243 ( I don't get the meaning of the parantheses) thank you!
August 26, 2015

Math
Remove the xy-term by rotation of axes, reduce the resulting equation to standard form and trace the curve on the new axes: 16x^2-24xy+9y^2-60x-80y+100=0
May 18, 2015

Math
Center at (2,-5), conjugate axis parallel to the y-axis, slopes at asymptotes numerically one-sixteenth times the length of the latus rectum, and distance between foci is 2sqrt145.
May 14, 2015

History
C.
April 30, 2015

physics
two ectors act on the same pont. what should the angle between them be so that a maximum resultant is obtained a. o degree b. 90 degree c. 180 degree d. cannot tell answer : a. 0 degree
January 25, 2015

algebric exponents
(3^x + 3^x + 1) divided by 8 answwer (3^2x + 1) divided by 8
January 25, 2015

algebra
3a + 9 = 29 3a = 29-9 3a = 20 a = 20/3 a = 6.6 round off to 7
January 25, 2015

english
c, a, d, b, f, e
December 25, 2014

physics
a horizontal force of 3 N is excerted on an object while a vertical force of 4 N is excerted at the same time. calculate the resultant force on the object? 3 square + 4 square = 25 so the resultant force will be 25 N
December 21, 2014

physics
vector diagram...?
December 21, 2014

physics
two girls exeret a force of 30 N and 10 N on a bag in same direction. a dog tugs at bag and drag it in oppsite direction with the force of 5 N. calculate the new force exerted on bag and draw a vector diagram. F= 10+30 = 40 N dog applied force in opposite direction with 5 N ...
December 21, 2014

Math
8b + 23 = -4.2
November 3, 2014

english
It's direct indirect objacts stuff can someone help me
October 1, 2014

Pre-Algebra
What is 1/8 - 3/5? 1/8 - 3/5 = 5/40 - 24/40 = 19/40
September 13, 2014

Algebra
1. Solve for the 101st term of the sequence whose 1st term is x-y and d=2x+y-3. 2. In the sequence 2, 6, 10, … , what term has a value of 106? 3. Solve for the 101st term of the sequence: 6-p, 4+p, 2+3p, 5p, … .
September 9, 2014

Algebra
1. Why cant you use the formula of the infinite geometric series on 1/81 + 1/27 + 1/9 + 1/3 + ..... 2. Using concepts of infinite geometric series, show that 0.9999 ..... = 1.
September 9, 2014

Algebra
My answer are all true except for number 4 which is false. Am I right?
September 9, 2014

Algebra
True or False 1. – 5, – 5, – 5, – 5, – 5, … is an arithmetic sequence. 2. In an arithmetic sequence, it is possible that the 13th term is equal to its 53rd term. 3. In an arithmetic sequence, the common difference is computed by subtracting the ...
September 9, 2014

Algebra
Given ________, – 243, – 226, – 209, – 192, – 175, … a. What is the 67th term of the sequence b. What is the series of the first 27 terms of the sequence
September 9, 2014

physics
a block of mass 0,5kg is attached to a spring .The spring is compressed to a distance of0,1m.The block is released .The block moves 0,07m past the equilibrium position .What is the force of friction that does work on the block. spring constant is 500
August 29, 2014

physics
a block of mass 0,5kg is attached to a spring.The spring is compressed to a distance of 0,1m .The block is released .The block moves 0.07m past the eequilibrium position .What is the force of friction that does work on the block? spring const is 500. F -kx -500 x .07
August 29, 2014

math
Its 2€g longer£ brcasuse £¥ its equvrnt
April 22, 2014

Math
17*23.125=393.125
April 14, 2014

Math
If Logan's family can drive 23.125 miles on 1 gallon of gas, how far can they drive on 17 gallons?
April 14, 2014

MATH
Five friends went to a baseball game. Three of the friends each bought a ticket for x dollars and a soda for $6.00. The other two friends each bought only tickets. Write and simplify an expression that represents the amount of money spent
February 17, 2014

Physics
A submarine is at a depth of 15.0 m under the ocean surface. The inside of the submarine is kept at atmospheric pressure. What is the net force being exerted on a circular window of the submarine that has a radius of 25 cm? The density of the ocean water is 1030 kg/m3. I know ...
January 21, 2014

math
20 x .80 = 16 problems correctly answered
August 10, 2013

accounting
a. a zero balance explanation: income statement accounts (revenues and expenses) are temporary accounts and therefore once these accounts are closed, the balance are zero.
August 7, 2013

math
36
May 28, 2013

Manufacturing process
Product that using manufacturing process and its process.
May 7, 2013

dynamics
Mass of 2.3 kg and 4.5 kg is connected with the cord as shown. The coefficient of kinetic friction between box and floor is 0.35. Determine: a)The tension in the cord b)The acceleration of the blocks c)If the block start slides with 2.3 m/s, d)How far does a blocks move in 4 ...
May 7, 2013

math
Assume you do not know the population standard deviation. describe how you form a 90% confidence interval to estimate the population mean age for students at Westwood College Online.
May 1, 2013

physics
1. A piece of rectangular block weighing 5 kg is pressed on a vertical wall by a horizontal force applied to the block. If the coefficient of friction between the block and the wall is 2.0, what force is necessary to keep the block in place? 2. If the force in Prob. 1 is ...
March 20, 2013

Chemistry
Suppose u place a beaker containing a solution in the refrigerator. An hour later, white solid found at thr bottom of beaker, wat hapoened? Why?
February 24, 2013

Chemistry
pH pH ( strip c : 8 ) dark green pH ( strip d : 3 ) purple - suppose u mix togather equal amounts of the solutions that produced the results of strip c and d , then test the pH of this new solution. What color will the indicator paper be? Explain .
February 24, 2013

math
1. Which of the following expressions is written in scientific notation? 1. 73.4 x 105 2. 0.09 × 107 3. 80 x 103 4. 4.22 x 10–3 2. Which of the following is 0.0000000708 written in scientific notation? 1. 7.08 x 10–8 2. 7.8 x 10–8 3. 708 x 10–10 4. 70...
January 31, 2013

Engl
Is It B?
January 30, 2013

Engl
2. Read the following paragraph from “A Tremendous Trade”: It might not seem fair, but in every profession, workers earn whatever people are willing to pay them. Baseball is no exception. Teams compete to offer as much money as they can to players who are among the ...
January 30, 2013

Math help
Describe 2 polygons by the number of vertices and sides each has
January 10, 2013

science
Why do humans use running shoes, winter boots, snowshoes, skis and flippers? Why are these not biological adaptations? Use animals as examples.
October 28, 2012

college calc
Approximate the square root of 64.3, y=x^(1/2). Starting point is the square root of 64.
October 26, 2012

Research
300-word summary of your business research process by describing the business research proposal from your experience in the workplace or in an article you find through the University Library
August 27, 2012

Math
3.6
July 10, 2012

Math
1.The principal is $50,000. This is P. 2.Research the annual interest rate for your investment. This is r. 3.State the time in years for the investment (as in when the new grandchild will be attending college). This is t. 4.State the number of compounding periods per year. ...
May 23, 2012

SOCIAL STUDIES PLZZ HELP
Yea rachel is right i just got 100% too
April 30, 2012

math URGENT!
Aww how cute Your mad Emerald! XD
April 27, 2012

us history
thank you Ms. Sue
March 30, 2012

us history
what did LOWELL MILL STRIKERS do?
March 30, 2012

MATH
A customer has a balance of $1,350. Interest is paid at the end of 12 months. Assuming the balance remains at $1,350 for all 12 months, how much interest will be earned after 12 months if the interest rate on the account is 5.5%?
March 17, 2012

Chemistry
h2c4h4o4 + 2naoh --> 2h2o + na2c4h4o4 as for the previous question im sorry i forgot to plug the maleic acid in the formula properly. so this ones it ^ .2213 of c4h4o4 used (maleic acid) and .1 M NaOH 1. show the equation for 1st and 2nd ionization 2. find molecular mass of...
March 12, 2012

trig
Simplify the expression cos^2 x (sec^2 x-1)
March 8, 2012

math
Thank you. What if i round it to millions. would it be 4 million?
February 25, 2012

math
How to I round 613,572,947 to the nearest tens. My teacher confuses me with this. Would it be 50?
February 25, 2012

history
against the Ku Klux Klan. Together, these were known as the _______ Acts. A. Grant B. Force C. Klan D. Reconciliation
February 2, 2012

college algebra
A grandmother is looking for a plan to finance her new grandchild’s college education. She has $50,000 to invest. Search the internet and locate a long-range investment plan, CD, Savings Bond, etc, for the grandmother. The plan is to earn compound interest
February 1, 2012

math
suppose you use the rule (3x+1,3y-4) to transform the original figure into a new figure. How would the side lengths of the new figure compare to the side lengths of the original? I need help fast. Thank you so much.
January 16, 2012

Math
Is the answer 191.7m2.
January 12, 2012

Math
Please help I have school tomorrow.
January 12, 2012

Math
Amandeep decides to grow a vegetable garden. She wants to make it 10.1m long and 4.2m wide. She is worried about rabbits eating from her garden so she builds a fence around it. The fence will be 11.2m long and 5m wide. What is the area between the fence and garden? Show your ...
January 12, 2012

COMPUTER HARDWARE MANAGEMENT
Your mother wants to purchase a larger hard drive for her computer and asks you to see what type of drive interface she has. Her computer is connected to the motherboard by a gray ribbon cable that encases 40 pins. What type of drive interface does she have? A. Solid State B. ...
November 29, 2011

math
write the fraction in lowest term
November 27, 2011

Math
How do I write the numbers in order from greatest to least and show my work 0.275, 2 5/8, 0.15, 3 6/7
November 9, 2011

Math
Please check my work. 1) 64 divide -4 = -16 2) -144 divide (-9) = 16 3) Simplify -9 and a small 2 = -81 4) Simplify (-3) and a small 3 = -27 5) Add -4/11 + 5/11 = 1/11 6) subtract 5/11- [-3/11] = 8/11 7) multiply [-7/8] • [-2/4] = 7/16 8) divide -3.5 -5.6 = -0.63 9) ...
November 8, 2011

Math
Divide -60/10 Is -6 the answer?
November 8, 2011

Math
4•(-5) Is 20 the correct answer?
November 8, 2011

Math
Subtract. -3 -16 Is -19 the answer?
November 8, 2011

Math
Add. (-6) + 11 Is 5 the answer?
November 8, 2011

Mathematics
A man walked for some distance at 8 km/h, and for an equal distance at 5 km/h. The total time he took was 13/4 hours. Find the total distance he walked. Explain your workings
November 5, 2011

Math
Mrs Li bought some oranges. She gave 1/2 of them to her sister, 1/4 of the remainder to her neighbour, 3/5 of those left to her children and had 6 left in the end. How many oranges did Mrs Li buy? Explain your workings
November 5, 2011

Basic math
Ah yay! Thanks miss sue!!
November 3, 2011

Basic math
I figured that but I thought I had to do some adding then divide it by two. Idk I think I'm a bit confused. Thank you
November 3, 2011

Basic math
The company Acceptance had employees with monthly salaries of $1,700, $1400, $7,000, $1550, and $2,500. Find the median of these salaries. How do I answer this?
November 3, 2011

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