Wednesday

October 22, 2014

October 22, 2014

Total # Posts: 246

**Chemistry**

Give a acid-base pairs which produce Na2CO3 as a salt
*October 8, 2014*

**Algebra (Quadratics)**

The height y (in feet) of a baseball thrown by a child is y = -1/10 x^2 + 3x + 6 where x is the horizontal distance (in feet) from where the ball was thrown. Will the ball fly over the head of another child 30 feet away trying to catch the ball? (Assume that the child who is ...
*September 25, 2014*

**physics really stuck**

A sprinter starts from rest and accelerates for 5s. He then travels at a constant velocity for 10s. Finally he slows down to a stop in 5s. Draw a distance time graph to represent his motion.
*September 17, 2014*

**Physics**

How do you convert a distance time graph to a velocity time graph. In my first distance time graph, i have 3 curves, two are above the x axis the the middle curve is under the x axis. i am confused on how to change this graph into a velocity time graph since i cant find the ...
*September 16, 2014*

**Physics**

A body travels from rest with acceleration 8m/s(squared)Find its velocity when it has covered a distance of 100 meter?
*August 24, 2014*

**Math**

Venski and his brother have each agreed to mow half of the front lawn, which is a rectangle, 120 feet by 60 feet. The law mower cuts a 4-foot-wide strip. If Venski starts at one corner and mows around the lawn toward the center, on which trip around will he have half the area ...
*April 1, 2014*

**stats**

If a random sample of size n = 65 is drawn, find ¦Ìx, ¦Ò x and P(24 ¡Ü x ¡Ü 26). (Round ¦Ò x to two decimal places and the probability to four decimal places.) ¦Ìx = Correct: Your answer is correct.
*March 3, 2014*

**Math**

Color this square so that one-half is green,one-third is yellow and and the rest is brown.Each triangle should be just one color.Make any pattern you like. How much of the square is brown?
*December 10, 2013*

**Math**

Which digit (0-9) occurs most often on a calendar for this month. Which occurs least often? Is the answer the same for every month of this year?
*December 10, 2013*

**math**

A rancher wishes to use 86 ft of fencing to enclose a rectangular paddock and subdivide the region into three smaller areas. If the total enclosed area is 225 ft2, find the dimensions of the enclosed region.
*November 4, 2013*

**math**

A rancher wishes to use 86 ft of fencing to enclose a rectangular paddock and subdivide the region into three smaller areas. If the total enclosed area is 225 ft2, find the dimensions of the enclosed region.
*November 4, 2013*

**Algebra (Word Problem)**

Jack and Jill each tipped their waiter 50 dollars. Jack tipped 4% of his bill while Jill tipped 10% of her bill. What is the total bill of the two?
*October 20, 2013*

**maths**

A straight highway leads to the foot of a tower of height 50m. From the top of the tower, the angles of depression of two cars standing on the highway are 30 degree and 60 degree. What is the distance between the two cars and how far is each car from the tower ?
*October 17, 2013*

**maths**

A straight highway leads to the foot of a tower of height 50m. From the top of the tower, the angles of depression of two cars standing on the highway are 30 degree and 60 degree. What is the distance between the two cars and how far is each car from the tower ?
*October 17, 2013*

**maths**

The shadow of a tower standing on a level ground is found to be 2x meters longer when sun's altitude is 30 degree than when it was 45 degree.Find the height of the tower.
*October 17, 2013*

**figure of speech**

The World is as big as....
*October 7, 2013*

**Algebra**

Consider two points A=(2,5) and B=(4,3), and a third point P=(a,b) on the x-axis. If the minimum value of line PA^2+ line PB^2 is c, what is a+b+c?
*September 29, 2013*

**Algebra (Work Problem)**

Susan's backyard has three faucets: A, B and C. If she turns on all three of them, it takes 380 minutes to fill the pool. If she turns on only A and B, it takes 570 minutes, and if she turns on only B and C, it takes 760 minutes. If she turns on only A and C, how long will...
*September 22, 2013*

**Algebra**

Find the equation of the circle having the given center and radius. center (-5,1), radius 6 squared.
*September 14, 2013*

**Algebra**

what are the appropriate metric units for measuring Bryce Canyon National Park
*September 14, 2013*

**Algebra**

A 12' ladder leans against a wall at 68 degree angle of elevation. Find the distance from the ladder's base to the wall.
*September 14, 2013*

**Algebra**

A sales force has 10 men and 10 women. A production unit of 7 people is set up at random. What is the probality that it will consist of 3 men and 4 women
*September 14, 2013*

**Algebra**

In a triangle ABC, point o is the incentre AD=2", AB=9" and BC=10" find y
*September 13, 2013*

**Algebra**

That would be 540, correct
*September 13, 2013*

**Algebra**

What is the measure of each of the angles of a regular 5 sided polygon?
*September 13, 2013*

**Algebra**

Thank You so much
*September 13, 2013*

**Algebra**

write the equation in slope intercept form and identify the slope and y-intercept 4x+9y=4
*September 13, 2013*

**Algebra**

What is the measure of each of the angles of a regular 5 sided polygon
*September 13, 2013*

**Math**

Determine the number of diagonals in a regular 40-gpn
*September 13, 2013*

**math**

If you had 9 quarters, 6 dimes, 2 nickels and 3 pennies in a box, select on coin at random. What is the expected value of this experiment?
*September 13, 2013*

**math**

If the odds against John winning the election are 1 to 7,what is the probility that john will win the election
*September 13, 2013*

**chemistry**

which has more number of particles, 3g of acetone or 3g of acetic acid
*June 9, 2013*

**math**

A limited access highway had an access reduction and lost 1/13 of its exits. If 264 of its exits were left after the reduction how many exits were there originally?
*May 9, 2013*

**Math**

Thank you, you are a gem.
*May 9, 2013*

**Math**

The number of professors in a college is p and the number of students is s, there are 16 times as many students as professors write an algebraic expression that shows the relationship.
*May 9, 2013*

**Math**

convert 1./27 convert repeating decimal to a/b
*May 9, 2013*

**Math**

change number to fraction a/b when a and b are integers 9 8/9
*May 9, 2013*

**math**

Thank you again
*May 9, 2013*

**math**

convert the numeral to a numeral in base 10
*May 9, 2013*

**Math**

You are great thank you
*May 9, 2013*

**Math**

Find a value for x so that 15/12=-5/x
*May 9, 2013*

**Math**

thank you so very much, it is really appreciated
*May 9, 2013*

**Math**

Two bike riders ride around a circular track, 1st rider completes one round in 12 minutes, the second rider completes a round in 16 minutes. If they start at the same time and fo in the same direction, how many turn before they meet at the same place again.
*May 9, 2013*

**Math**

2500 students take a college entrance exam. The scores on the exam have an approximate normal distribution with mean u = 52 points and a standard deviation o = 11 points. Estimate the percentage of students scoring 52 points or more. ^ How would you do this?
*May 7, 2013*

**math**

For 5x=0, x=0 because when you divide 0 by 5; it is x=0. The second one would be "All Real Numbers". The 3rd one would be "No solution".
*May 7, 2013*

**life orientation**

lyf style of hiv and aids
*April 20, 2013*

**Algebra**

You are an angel, thank you so much.
*March 9, 2013*

**Algebra**

Parking in a student parking lot costs 2.00 for the first half hour and $1.75 for each hour thereafter. A partial hour is charged the same as a full hour. What is the longest time a student can park for $9.00? Show your work.
*March 9, 2013*

**Algebra**

Thank you so much you are great. It is really appreciated.
*March 9, 2013*

**Algebra**

area of a triangle with a base of 1 4/5 yards, and a height of 5/7 yards.
*March 9, 2013*

**Algebra**

six times a number minus twice the same number.
*March 9, 2013*

**Algebra**

In 1980 median family income was about $18,000 and in 2000 it was 40,000. (a) Find slope of line passing through points (1980, 18,000) and (2000, 40,000) (b) Interperate slope as a rate of change (c) If the trend continues, estimate the median family income in 2006.
*March 9, 2013*

**Algebra**

Thank you so much. I hope I can do it from here.
*March 9, 2013*

**Algebra**

The cost of driving a car includes both fixed ans mileage costs. Assume that it costs $152.20 per month for insurance and car payments ans $0.22 per mile for gasoline oil and routine maintenance. (a) Find value m and b so that y-mx=b modeks the monthly cost of driving the car ...
*March 9, 2013*

**Algebra**

A certain nation is losing 26 million acres of rain forest each year. (a) Find the linear function f that calculates the change in acres of rain forest in millions in x years. Use x as a variable (b) find f(3) and interperate the result. f(t)= Simplify Interperate result ...
*March 7, 2013*

**Algebra**

Can you explain how you got this answer please. 8.4x10^7 is the amount of people 440000 = each persons estimated worth so 4.0x10^13 is the solution or would it be plus or minus 40 trillion.
*March 6, 2013*

**Algebra**

In 2000 in country A the average family net worth was $440,000 and there were about 8.4x10to the power of 7, families. Caculate the family worth in country A in 2000.
*March 6, 2013*

**Algebra**

A tugboat goes 160 miles up stream in 20 hours, return trip downstream takes 5 hours. Find speed of tugboat without the current and the speed of the current
*March 6, 2013*

**Algebra**

f(a)=r, f(b)=q, f(c)=t, f(d)=r Write functions as a set of ordered pairs. Give domain and range of t. f= type ordered pairs domain is range is
*March 5, 2013*

**algebra**

The cost of a car is multiplied by 0.02 the result is 175.. find the cost of the car.
*March 5, 2013*

**Algebra**

yES, IT SHOULD BE 1.1 MILLION INMATES
*March 5, 2013*

**Algebra**

The number of state and federal inmates in millions during year x was x=2002 X CAN BE APPROXIMATED BY THE FOLLOWING n=0.03X-59.02 dETERMINE THE YEAR THERE WERE 101 MILLION INMATES
*March 5, 2013*

**Algebra**

the number of state and federal inmates in millions during year x were x more or less than 2002 can be approximated by the following. N=0.03x -59.02. Determine the year there were 1.1 million inmates.
*March 4, 2013*

**Algebra**

A mountain has an elevation or 19,389 feetin 1918, the glacier at the peak covered 4 acres, by 2003 this glacier had melted to 1 acre. What was the yearly rate of change. What is the equation that gives the acreage t years after 1918
*March 4, 2013*

**Algebra**

x+3y>-3 and 4x+y=4
*February 24, 2013*

**Pre Algebra**

A wooden railing is 82 feet long. It is to be divided into 4 pieces. Three pieces will be the same length, and the fourth piece will be 2 feet longer than each of the other three. Find the length of each piece.
*February 18, 2013*

**math**

what is the speed of 43.2meters/ second in miles/hour?
*February 6, 2013*

**algebra: logs**

Log3x=4
*December 10, 2012*

**Chemistry**

Hi, i am stuck on this question, how do I go about answering it? why are fluorine atoms normally found as part of fluorine molecules?
*November 20, 2012*

**geography**

what factors account for the similarities and differences between the subdivisions in tropical climate zones?
*September 9, 2012*

**math**

My algebra question is; The ordered pair (3,0) is found? I don't have a clue. Can you help please? Thank you, Ruth
*August 30, 2012*

**Math**

Tanker boats cannot be in the bay when the depth of water is less or equal to 25 feet. Set up an inequality and solve it graphically to determine all points in time, t, on the interval 0 less than or equal to t less than or equal to 24 when tankers cannot be in the bay. Round ...
*August 22, 2012*

**Criminology**

How does rational choice theory work when someone is commiting a crime
*July 21, 2012*

**financial understanding**

if apr is 7.3% daily and haad $400 1st 10 days, 1500 next 10 and 600 next 10 how much intrest was earned at end of month
*May 17, 2012*

**Econ/stats**

The following data represent the number of flash drives sold per day at a local computer shop and their prices. Price (x) Units Sold (y) $34 3 36 4 32 6 35 5 30 9 38 2 40 1 a. Develop a least-squares regression line and explain what the slope of the line indicates. b. Compute ...
*April 29, 2012*

**Econ/stats**

The following data represent the number of flash drives sold per day at a local computer shop and their prices. Price (x) Units Sold (y) $34 3 36 4 32 6 35 5 30 9 38 2 40 1 a. Develop a least-squares regression line and explain what the slope of the line indicates. b. Compute ...
*April 29, 2012*

**assessment**

When scoring the MMPI 2, how can you intrepret it and what is the diagnosis according to Axis II. The scores are as follow: ?= 13 L = 3 F=19 k=8 hS=14 d=30 hY=32 pD=24 Mf=37 Pa=12 Pt=25 Sc=21 Ma=22 Si=32 Pleae forward results/intrepretation
*April 24, 2012*

**accounting**

examples from the manufacturing industry of: o a journal entry that would be recorded that impacts the balance sheet
*April 23, 2012*

**Chemistry**

Calculate ∆Hºf /mol for propane, C3H8(g), given the following reaction: (10 points) C3H8(g) + 5O2(g) → 3CO2(g) + 4H2O(ℓ ); ∆Hºrxn = -2219.9 kJ
*April 9, 2012*

**math**

The breaking strength (in pounds) of a certain new synthetic is normally distributed, with a mean of 175 and a variance of 4. The material is considered defective if the breaking strength is less than 169 pounds. What is the probability that a single, randomly selected piece ...
*March 14, 2012*

**Physics**

Why would you get an e3lectric shock if you flew a kite close to the electricity wires?
*March 13, 2012*

**Physics**

Why would you get an e3lectric shock if you flew a kite close to the electricity wires?
*March 13, 2012*

**chemistry**

Discuss possible solutions to the reduced supply of light sweet crude oil. I have no idea to answer this question. Please advise me on how to answer it. Thanks in advance
*March 13, 2012*

**chemistry**

Thank you very much, this information has helped to answer my question.
*March 10, 2012*

**chemistry**

Fuel oil and bitumen is 38% in demand Petrol and Naptha is 27% in demand Diesel is 23% in demand. A question asks: Why are these fractions in demand? I am not sure how to answer this questions and please advise me to how to answer this question. Thanks in advance
*March 10, 2012*

**Physics**

A = 145 rock is hoisted upward with an acceleration of 1.46 by a vertical chain of negligible weight. What is the free body diagram?
*February 13, 2012*

**Math**

You will need the following info to solve the problem: You can cover a sheet of paper with 6 $100 bills There are 500 sheets of paper in 1 ream There are 10 reams in 1 carton Imagine that you have inherited $1 million . The bank has only $700,000 in $100 bill. The bank gives ...
*February 3, 2012*

**Finance**

You will need the following info to solve the problem: You can cover a sheet of paper with 6 $100 bills There are 500 sheets of paper in 1 ream There are 10 reams in 1 carton Imagine that you have inherited $1 million . The bank has only $700,000 in $100 bill. The bank gives ...
*February 3, 2012*

**algebra**

The formula for calculating the amount of money returned for an initial deposit into a bank account or CD (certificate of deposit) is given by nt n r P A „Ê„Ë „É „º„» „¹ ƒ 1ƒy A is the amount of the...
*February 2, 2012*

**Algebra**

Students in an English class took a final exam. They took equivalent forms of the exam at monthly intervals thereafter. The average score S(t), in percent, after t months was found to be given by . a) What was the average score when they initially took the test, t = 0? S(t) =...
*February 1, 2012*

**College Algebra**

Annual profit in thousands of dollars is given by the function, P(x) = -.1x2 + 50x - 300, where x is the number of items sold, x ¡Ý 0. 1.describe the meaning of the number -.1 in the formula 2.describe the meaning of the number -300 in the formula 3.find the ...
*January 29, 2012*

**Reading**

im guessing scared of the hospital room or the people in it the doctors or even the other patients in room .
*January 11, 2012*

**Reading**

1. "bedside terror" is a play on the common phrase "beside manner", which is used to describe how well doctors relate to their patients. what is the effect of replacing the word manner with terror?
*January 11, 2012*

**math**

Could someone explain this answer.
*December 9, 2011*

**physics**

A man of mass 67.1 kg stands on a scaffold supported by a vertical rope at each end. The scaffold has a mass of 24.6 kg and is 3.6 m long. Suppose the man stands to the right from the middle of the scaffold that is a distance one sixth of the length of the scaffold. What is ...
*November 15, 2011*

**English**

Thank you. It is an exam, so i am just filling in my planning grid and writing draft paragraphs.
*November 13, 2011*

**English**

My task is to write a persuasive article for my chool website about an issue related to school meals. My title is 'Unhealthy heaven' My sub-heading is 'Those hungry humans crave for tasty foods. What will it be?' My introduction's main point is that ' ...
*November 13, 2011*

**PHYSIC**

1)What must be the orbital speed of a satellite in a circular orbit 740 above the surface of the earth? 2)What is the period of revolution of a satellite with mass that orbits the earth in a circular path of radius 8000 (about 1630 above the surface of the earth)?
*November 8, 2011*

**French**

Bonjour! I have to find synonyms for the word Fantastique the synonyms should begin with g .... t... b... s... Thanks
*November 7, 2011*

**College Algebra**

Use rational root theorem and the factor theorem to help solve the following equation X4-2x3-13x2+38x-24=0
*November 6, 2011*