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December 22, 2014

December 22, 2014

Post a New Question | Current Questions

**statistics**

Suppose a college's SAT scores are normally distributed with mean 1000 and standard deviation 1 for students above 1200. What percentage of students is eligible for scholarships
*Wednesday, September 19, 2012 at 2:55pm*

**college-physics**

how to write scientific report on physics
*Wednesday, September 19, 2012 at 2:19am*

**statistics**

Pre study scores versus post-study scores for a class of 120 college freshman english students were considerated. The residual plot for the least squares regression line showed no pattern. The least square regression line was y = 0.2 + 0.9x with a correlation coefficient r = 0...
*Tuesday, September 18, 2012 at 11:59pm*

**college algebra**

x^4+2x^2-15=0
*Tuesday, September 18, 2012 at 9:56pm*

**SS8R: The National Convention The Female Voice**

Here it is: National Convention Speeches: The Female Voice During the month of September 2012, both the Republicans and Democrats held their national conventions. Several political figures, entertainers and everyday people were invited to speak in favor of their respective ...
*Tuesday, September 18, 2012 at 6:31pm*

**college pre-calculus**

An investment of $4000 is deposited into an account in which interest is compounded monthly. Complete the table by filling in the amounts to which the investment grows at the indicated times. (Round your answers to the nearest cent.) r = 4%
*Tuesday, September 18, 2012 at 3:34pm*

**Physics**

I am in need of some basic tools in which to become better prepared to excel in my "Conceptual Physics" college course. I am a retired veteran of the Army and have not been in school for 25 years. Some reference charts for Trigonometry, basic glossary for any ...
*Tuesday, September 18, 2012 at 7:05am*

**college-chemistry**

calculate the ph of a buffer solution prepared by adding 0.397 mole of the sodium salt of a weak organic acid HA to 0.474 L of 1.023m acid HA with pka=4.82 and diluting to 1.00 L WITH WATER
*Tuesday, September 18, 2012 at 3:26am*

**Finite Math (college)**

EventProbability Too much enamel0.27 Too little enamel0.2 Uneven application0.35 No defects noted0.43 (1) What is the probability of a paint defect? (2) What is the probability of a paint defect which includes an improper amount of paint? (3) What is the probability of a paint...
*Monday, September 17, 2012 at 10:10pm*

**Math 132 Trigonometry (College)**

when the angle of elevation of the sun is 58 degrees. the shadow cast by a tree is 28 ft. long. how tall is the tree?
*Monday, September 17, 2012 at 6:39pm*

**College Algebra**

Solve each equation. If an equation has no solution, so indicate. (no complex #) a - 1 = _ 3a + 2 a+2 a2 + 4a + 4 reads: a over a+2 minus 1 equals -3a+2 over a2 (a squared) + 4a + 4
*Sunday, September 16, 2012 at 6:32pm*

**College physics**

The magnitude of vector is 40.0 units and points in the direction 315° counterclockwise from the positive x-axis. Calculate the x- and y-components of this vector.
*Sunday, September 16, 2012 at 5:23pm*

**college algebra**

to travel 132 miles it take sue riding a moped 2 hours less time then it takes doreen to travel 56 miles riding a bike. sue travels 15 miles per hour faster then doreen find the time and rates
*Sunday, September 16, 2012 at 4:11pm*

**Database**

Following report shows a grade report that is mailed to students at the end of each semester. Prepare an E-R diagram reflecting the data contained in the Grade Report. Assume that each course is taught by one instructor. MILLENIUM COLLEGE GRADE REPORT FALL SEMESTER 199X NAME: ...
*Sunday, September 16, 2012 at 12:37am*

**Database**

Following report shows a grade report that is mailed to students at the end of each semester. Prepare an E-R diagram reflecting the data contained in the Grade Report. Assume that each course is taught by one instructor. MILLENIUM COLLEGE GRADE REPORT FALL SEMESTER 199X NAME: ...
*Saturday, September 15, 2012 at 10:58pm*

**college algebra**

f(x)= 4x+3 what is f(x+h) - f(x) divided by h
*Saturday, September 15, 2012 at 10:16pm*

**College Stat**

A pair of fair dice is rolled. What is the probability of each of the following? (Round your answers to three decimal places.) (a) the sum of the numbers shown uppermost is less than 5 and (b)at least one 5 is cast
*Saturday, September 15, 2012 at 3:46pm*

**college algebra**

x y z rhs 1 1 2 3 2 1 6 3 0 3 4 13 multiply some number by r2 and add result to r3(2) have to get o in r3 (1)- steps:------------------
*Friday, September 14, 2012 at 7:49pm*

**college algebra**

x y z rhs 1 1 2 3 2 1 6 3 0 3 4 13 i need to multiply some number and add to r3 and get o in r3 answer quick!
*Friday, September 14, 2012 at 7:44pm*

**college algebra**

x y z rhs 1 1 2 3 2 1 6 3 0 3 4 13 i need to multiply some number and add to r3 answer quick!
*Friday, September 14, 2012 at 7:41pm*

**math**

Steven collected data from 20 college students on their emotional responses to classical music. Students listened to two 30-second segments from “The Collection from the Best of Classical Music.” After listening to a segment, the students rated it on a scale from 1 ...
*Friday, September 14, 2012 at 8:20am*

**college algebra**

12x+4y+2z=-7 (1) 3x-12y+6z=-4 (2) 9x-16y+4z=-3 (3) solve the system. show steps and answers i tried this problem really difficult
*Thursday, September 13, 2012 at 7:57pm*

**college algebra**

12x+4y+2z=-7 (1) 3x-12y+6z=-4 (2) 9x-16y+4z=-3 (3) solve the system just need the steps how to do it
*Thursday, September 13, 2012 at 7:50pm*

**college algebra**

2x+y=-2 (1) x+y-z=-4 (2) 3x+5y+z=0 (3) solve the system need help quick!
*Thursday, September 13, 2012 at 7:25pm*

**statistics**

Pre- study scores versus post- study scores for a class of 120 college freshman english students were considerated. The residual plot for the least squares regression line showed no pattern. The least squares regression line was y^=0.2+0.9x withwith a correlation coefficient r...
*Thursday, September 13, 2012 at 2:20am*

**College Algebra**

What do I do to graph: (x-2)^2+(y-4)^2=9
*Thursday, September 13, 2012 at 12:49am*

**College Physics**

A hunter wishes to cross a river that is 1.6 km wide and flows with a speed of 5.0 km/h parallel to its banks. The hunter uses a small powerboat that moves at a maximum speed of 15 km/h with respect to the water. What is the minimum time necessary for crossing? min
*Wednesday, September 12, 2012 at 3:58pm*

**College Physics**

The best leaper in the animal kingdom is the puma, which can jump to a height of 3.7 m when leaving the ground at an angle of 45°. With what speed must the animal leave the ground to reach that height? _____m/s
*Wednesday, September 12, 2012 at 3:45pm*

**College Algebra**

Solve the equality.5(x^2-1)> -24x
*Tuesday, September 11, 2012 at 8:21pm*

**College Algebra**

You plan to invest $12,000 in two funds paying 41/2% and 5% simple interest. (There is more risk in the 5% fund.) Your goal is to obtain a total annual interest income of $580 from the investment. What is the smallest amount you can invest in the 5% fund and still meet your ...
*Tuesday, September 11, 2012 at 7:50pm*

**college biology**

Describe some reasons why a patient might have abnormally low blood cholesterol.
*Tuesday, September 11, 2012 at 5:14pm*

**college biology**

Why LDL is considered the bad cholesterol and HDL the good cholesterol
*Tuesday, September 11, 2012 at 5:13pm*

**college math**

can you build or generate at least 5 pythagorean triples using one of many formulas? and can u verify each one of them in the pythagorean theorem equation
*Monday, September 10, 2012 at 4:50pm*

**College Physics**

An object moves with constant acceleration 4.95 m/s2 and over a time interval reaches a final velocity of 13.2 m/s. (a) If its initial velocity is 6.6 m/s, what is its displacement during the time interval? (b) What is the distance it travels during this interval?
*Monday, September 10, 2012 at 1:00pm*

**college physics**

A race driver has made a pit stop to refuel. After refueling, he leaves the pit area with an acceleration whose magnitude is 5.40 m/s2; after 4.0 s he enters the main speedway. At the same instant, another car on the speedway and traveling at a constant speed of 69 m/s ...
*Sunday, September 9, 2012 at 6:54pm*

**math**

mr. Rodriguez, a college instructor, can grade his class papers in 3 hours while it takes his assistant 4 1/2 hours. If Mr. Rodriguez graded the papers for 1 hour and then left the job for his assistant to complete, how long will it take his assistant to finish grading ...
*Sunday, September 9, 2012 at 6:26pm*

**College Physics**

A 6107 kg elevator is moving 4.6 m/s up. The tension in the elevator cable is 66,512.6 N. Determine the acceleration of the elevator (state the appropriate mks units).
*Sunday, September 9, 2012 at 2:24pm*

**College Biology**

Calculate the concentration in Moles for a 5mgMgCl2 sample in 2L of solution. Then how many ions are in it?
*Sunday, September 9, 2012 at 2:03pm*

**College Algebra**

The period (the time required for one complete swing) of a simple pendulum varies directly as the square root of its length. If a pendulum 12 feet long has a period of 4 seconds, find the period of a pendulum 3 feet long.
*Sunday, September 9, 2012 at 1:52am*

**College Physic**

Here is the Hw question: An archerfish hunts by dislodging an unsuspecting insect from its resting place with a stream of water expelled from the fish’s mouth. Suppose the archerfish squirts water with a speed of 2.3 m/s at an angle of 50 degrees above the horizontal, ...
*Saturday, September 8, 2012 at 9:39pm*

**College Physic**

Here is the Hw question: An archerfish hunts by dislodging an unsuspecting insect from its resting place with a stream of water expelled from the fish’s mouth. Suppose the archerfish squirts water with a speed of 2.3 m/s at an angle of 50 degrees above the horizontal, ...
*Saturday, September 8, 2012 at 7:32pm*

**college algebra**

How do you solve f(x)=square root of 2x+1 using the difference quotient? I need to see the steps.
*Friday, September 7, 2012 at 3:04pm*

**college physics**

A 2000kg van and a 1500 kg car both travelling at 40ms^-1 in opposite directions collide head on and lock together. what are their speed and direction immediately after the collision?
*Friday, September 7, 2012 at 11:47am*

**college physics**

in a pinball machine, a force of 24 N is used to compress a spring a distance of 0.080m. a. What is the potential energy stored in the spring? b. What is the maximum speed tha it van produve in a ball of mass 0.15kg?
*Friday, September 7, 2012 at 11:38am*

**College Finite**

Assume that the student has a cup with 13 writing implements: 7 pencils, 4 ball point pens, and 2 felt-tip pens. In how many ways can the selection be made if no more than one ball point pen is selected?
*Thursday, September 6, 2012 at 5:43pm*

**college calc**

Give a formula for the function illustrated using a vertical shift of an exponential function. The two points marked on the graph are A=(−1,17) and B=(1,2). The red horizontal line is given by y=1, and is a horizontal asymptote of the function. What is the equation?
*Thursday, September 6, 2012 at 4:16pm*

**college algebra**

use the given zero to find the remaining zeros of the function h(x)=x^4-15x^3+60x^2+70x-816 zero: 5-3i
*Wednesday, September 5, 2012 at 9:37pm*

**Nutrition**

Josephine is a 20 year old female who is present for an eating disorder not otherwise specified. She currently teaches salsa lessons at the community college and is in her last semester of college. She reports she is living at home and the food her mom prepares is not the ...
*Wednesday, September 5, 2012 at 9:37pm*

**college alg :(**

if f(x)=lnx, g(x)=e^3x, and h(x)=x^4 find following A)(f of g)(x)and the domain of f of g B) (g of f)(x) and the domain of g of f C) (f of h)(x) and the domain of f of h
*Wednesday, September 5, 2012 at 9:31pm*

**college alg**

consider the function f(x)=9/x and g(x)=9/x find f(g)x))and any values that may be excluded what is g(f(x)) and any values that may be excluded and functions f and g inverse of eachother
*Wednesday, September 5, 2012 at 9:23pm*

**college alg**

the function f(x)=6x+9/3x-7 is one to one. find its inverse and check your answer. f^-1(x)=? please show work
*Wednesday, September 5, 2012 at 8:55pm*

**college alg**

solve the following inequality x^2(8+x)(x-5)/ (x+5)(x-2)> or equal too 0 this looks like a fraction please show work
*Wednesday, September 5, 2012 at 8:31pm*

**college elg**

the function f(x)=6x+9/3x-7 find inverse and check it f^-1(x)=? please show work
*Wednesday, September 5, 2012 at 8:29pm*

**college alg**

solve the following logarithm equation log (4x+7)=1+log(x-6) x=? please show work
*Wednesday, September 5, 2012 at 8:24pm*

**college alg**

the function f(x)=6x+9/3x-7 find the inverse and check answer f^-1(x)=? please show work
*Wednesday, September 5, 2012 at 8:23pm*

**precal college**

a rocket is shot straight up into the air with an inicial velocity of 250 ft per second and from a height of 100 feet above the ground. h= -16x2+ 250x+ 100
*Wednesday, September 5, 2012 at 8:07pm*

**college alg**

solve the following exponential equation. (e^x-e^-x)/2=6 what is the exact answer? x=? what is the answer approx to 3 decimal places? x=?
*Wednesday, September 5, 2012 at 7:43pm*

**college Alg**

graph the parabola, then determine the domain and range. f(x)=x^2x-4x-4
*Wednesday, September 5, 2012 at 7:29pm*

**college alg**

the function f(x)=6x+9/3x-7 find the inverse and check answer f^-1(x)=? please show work
*Wednesday, September 5, 2012 at 6:53pm*

**college algebra**

solve the following exponential equation. (e^x-e^-x)/2=6 what is the exact answer? x=? what is the answer approx to 3 decimal places? x=?
*Wednesday, September 5, 2012 at 6:44pm*

**college algebra**

solve the following logarithm equation log (4x+7)=1+log(x-6) x=? please show work
*Wednesday, September 5, 2012 at 6:42pm*

**college algebra**

graph the parabola, then determine the domain and range. f(x)=x^2x-4x-4
*Wednesday, September 5, 2012 at 6:01pm*

**college alg**

for the given functions f and g find the following and state the domain of each result f(x)=3x+1/8x-9; g(x)=5x/8x-9 (they look like fractions) A) (f+g)(x)=? B)domain of (f+g) c) (f/g)(x)=? d) domain of f/g? please show work
*Wednesday, September 5, 2012 at 5:27pm*

**college algebra**

A circle has the equation x^2+y^2+6x-46=0 graph using (h,k) radius r what are the intercept?
*Wednesday, September 5, 2012 at 5:21pm*

**Government**

I am looking for help. I have read this article in the New York Times Several times. It is a lengthy article. It is "A Genratin Hobbled by the soaring cost of college bt Andrew Martin and Andrew Lehran. I cannot figure out the authors purpose or what the main ideas ideas...
*Wednesday, September 5, 2012 at 11:30am*

**College Biology help!**

Is this true? Explain. To make a 100 osmolar solution of magnesium chloride, 60g of the salt are placed in a liter of water.
*Wednesday, September 5, 2012 at 12:43am*

**college alg**

find the equation of a line that is perpendicular to line y=1/6x+6 and contains point (-7,0) y=? please show work so i can see how its done
*Tuesday, September 4, 2012 at 10:49pm*

**college alg**

find the equation of a line that is parallel to the line x=6 and contains the point (-8,9) please show work, it also wants me to show the answer in an equation
*Tuesday, September 4, 2012 at 10:42pm*

**physics**

Hello everyone, I need help with this question: A dart gun is fired while being held horizontally at a height of 1.00m above ground level and while it is at rest relative to the ground. The dart from the gun travels a horizontal distance of 5.00m. A college student holds the ...
*Tuesday, September 4, 2012 at 7:42pm*

**college math**

last month bill's electric bill was $80.77. This month , bill bill was $69.06. what is the%degrease
*Tuesday, September 4, 2012 at 3:44pm*

**college math**

3-x=12(x-1)
*Tuesday, September 4, 2012 at 3:36pm*

**English**

Did help with finding the authors purpose and main ideas in this article "A Generation Hobbled by the Soaring Cost of College by Andrew Matin and Andrew Lehren in the New yOrk times
*Tuesday, September 4, 2012 at 2:38pm*

**college math II**

how do you translate the product of 10 and three more than a number in algebraic expression?
*Tuesday, September 4, 2012 at 9:05am*

**statistics**

4. Suppose you administered an anxiety test to a large sample of people and obtained normally distributed scores with a mean of 45 and standard deviation of 4. Do not use web-calculator to answer the following questions. Instead, you need to use the Z distribution table in ...
*Monday, September 3, 2012 at 8:55pm*

**college**

A blue ball is thrown upward with an initial speed of 19.8 m/s, from a height of 0.5 meters above the ground. 2.4 seconds after the blue ball is thrown, a red ball is thrown down with an initial speed of 7.9 m/s from a height of 22.5 meters above the ground. The force of ...
*Monday, September 3, 2012 at 7:33pm*

**College Math**

What would 10 to the 16th power be?
*Monday, September 3, 2012 at 7:28pm*

**College Math**

How do you solve a quadratic equation using the indian method?
*Monday, September 3, 2012 at 5:16pm*

**college physics**

A water-skier is being pulled at a steady speed in a straight line. her mass plus the mass of the ski is 65 kg. the pull of the tow rope on her is 520 N. a...i) What is the vertical component Y of the push of the water on the ski?? ....ii) What is the horizontal component X of...
*Monday, September 3, 2012 at 2:25pm*

**Probability**

4.3. In a certain college town, 27.5 percent of the students failed Mathematics (Math), 19.8 percent failed Biology (Bio), and 11 percent failed both Math and Bio. A student is selected at random. Let A represent the event of failing Math, so that A' is the probability of ...
*Sunday, September 2, 2012 at 11:32pm*

**college alg**

use the transformations to identify the graph of the function. then determine its domain, range, and horizontal asymptote. f(x)=4+3^X/3 please show work
*Sunday, September 2, 2012 at 9:53pm*

**COLLEGE ALG**

use the transformations to identify the graph of the function. then determine its domain, range, and horizontal asymptote. f(x)=4+3^X/3
*Sunday, September 2, 2012 at 5:44pm*

**math**

A college offers nine different psychology courses,four different history course,thirteen different math course,and five different business courses. If a student is required to take one course in each of those four subjects,how many different ways are there for the student to ...
*Sunday, September 2, 2012 at 11:45am*

** college math**

prove f(x)= x^15+6 is increasing on the interval: I= (-‡,‡)
*Saturday, September 1, 2012 at 6:26pm*

**College Math**

LPG is stored in highly insulated spherical vessels in most oil refineries. If the inside diameter of one of these tanks is 11.4 ft, find it's volume. Report your answer to the nearest one-tenth of a gal. Use pie-3014, and 1cubic ft= 705 gal. Possible answers to choose ...
*Friday, August 31, 2012 at 3:53pm*

**College Math**

Find the missing side. Approximate the answer to three decimal places when appropriate. Possible answers are: (A) 10yd, (B)31.623yd, (C) 20yd, (D) 400yd. Can you help me? I have done this so far. 180-15-25=140. I have tried everything that I know of to get the answer but I'...
*Friday, August 31, 2012 at 3:47pm*

**college chemistry**

Rank from highest to lowest vapor pressure.CH3CH2CH2CH2OH,CH4,CH3CHCH2CH3CH3,CH3CH2CH2CH2CH3
*Friday, August 31, 2012 at 2:33pm*

**math**

In a college of exactly 3000 students, exactly 70 are male. What is the number of female students? Express your answer as an integer
*Friday, August 31, 2012 at 12:42am*

**College Physics**

Large boxes of pumpkins are set on a ramp to be unloaded out of a truck. The 300.0 lb boxes are set on the ramp which has an incline of 35 degrees. They must then be pushed to get started down the plane towards the bottom. If the coefficient of the static friction between the ...
*Thursday, August 30, 2012 at 8:09pm*

**College Math**

Find the measure of the missing angle a= 28 degree, b=97degree I 'm not sure how to go about in finding the missing angle. Could you please help?
*Thursday, August 30, 2012 at 4:43pm*

**Business and math question**

Isabella is hoping to get an A on her college algebra course. With just the final exam left to take, she currently has an average of 92 on her exercises. The quizzes count for 40%, exercises count for30% of the class grade. What is the minimal grade that Isabella must have on ...
*Thursday, August 30, 2012 at 2:11pm*

**Business**

Isabella is hoping to get an A on her college Algebra course. With just the finaL exam left to take, she currently has an average of 85 on her quizzes and average of 92 on her exercises. The quizzes count for 40%, exercises count for 30% of the class grade. What is the minimal...
*Thursday, August 30, 2012 at 11:07am*

**Math**

I am stuck with this logic problem: Logic – Jack of All Trades Trudy loves learning new things and is always taking some course or other forum the local college’s adult education program. She’s signed up for four upcoming classes – calligraphy, picture ...
*Wednesday, August 29, 2012 at 7:59pm*

**College Physics 2**

Estimate the magnitude of the electric field strength due to the proton in a hydrogen atom at a distance of 5.29x10^-11 m, the expected position of the electron in the atom.
*Wednesday, August 29, 2012 at 7:07am*

**College Physics 2**

a very small ball has a mass of 5 x 10^-3 kg and a charge of 4x10^-6C(microC). What magnitude electric field directed upwad will balance the weight of the ball?
*Wednesday, August 29, 2012 at 7:05am*

**Math**

I am stuck with this logic problem: Logic – Jack of All Trades Trudy loves learning new things and is always taking some course or other forum the local college’s adult education program. She’s signed up for four upcoming classes – calligraphy, picture ...
*Tuesday, August 28, 2012 at 11:00pm*

**college economics**

how to weigh marginal cost and marginal benefits when using examples of recent decisions in your life.
*Tuesday, August 28, 2012 at 9:50pm*

**psychology**

why would apa format help me in college?
*Tuesday, August 28, 2012 at 7:00pm*

**college algebra**

Find the inverse of the following function. Find the domain, range, and asymptotes of each function. Graph both functions on the same coordinate plane f(x)=4+e^-x/3 please help me! show steps also, if i an just given an answer that wont help me! thanks in advance!!!
*Tuesday, August 28, 2012 at 5:49pm*

**College Math**

High Knob Mountain is 4044 ft. high. What is this distance in meters? The answer I put was (B)102.8m. Is this the correct answer? If no, what am I doing wrong? The other answers to choose from are: (A) 6470m, (C) 1233m (D) 4000m
*Tuesday, August 28, 2012 at 5:45pm*

**College Math**

The posted speed limit on many U.S. highways is 65 miles per hour. What is this speed in feet per second? My answer was 5720 feet per second. The other answers that would be a possibility are: (A)3600 feet per second, (B)95 1/3 feet per second, (C) 5720 feet per second, which ...
*Tuesday, August 28, 2012 at 5:26pm*

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