Wednesday

August 24, 2016
**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 by ann :)*

**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 by ann :)*

**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 by Gee*

**College Algebra**

What do I do to graph: (x-2)^2+(y-4)^2=9
*Thursday, September 13, 2012 by Dalton*

**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 by Dumb-Dumb*

**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 by Kali*

**College Algebra**

Solve the equality.5(x^2-1)> -24x
*Tuesday, September 11, 2012 by Mountain Scott*

**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 by Danny*

**college biology**

Describe some reasons why a patient might have abnormally low blood cholesterol.
*Tuesday, September 11, 2012 by amy*

**college biology**

Why LDL is considered the bad cholesterol and HDL the good cholesterol
*Tuesday, September 11, 2012 by amy*

**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 by Quita*

**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 by Andre'*

**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 by Tess*

**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 by help pleaseee*

**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 by Joe*

**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 by cutiepie*

**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 by Shawn*

**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 by Megan Lee*

**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 by Megan Lee*

**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 by Anonymous*

**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 by Mariam*

**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 by Mariam*

**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 by Devin*

**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 by harry*

**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 by ALLI*

**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 by LA*

**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 by ALLI*

**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 by ALLI*

**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 by MYA*

**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 by MYA*

**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 by MYA*

**college alg**

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

**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 by MYA*

**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 by Anonymous*

**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 by MYA*

**college Alg**

graph the parabola, then determine the domain and range. f(x)=x^2x-4x-4
*Wednesday, September 5, 2012 by ALLI*

**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 by ALLI*

**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 by ALLI*

**college algebra**

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

**college algebra**

graph the parabola, then determine the domain and range. f(x)=x^2x-4x-4
*Wednesday, September 5, 2012 by ALLI*

**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 by ALLI*

**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 by Anew*

**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 by Vicky*

**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 by Anne*

**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 by alli*

**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 by alli*

**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 by Leo*

**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 by Anonymous*

**college math**

3-x=12(x-1)
*Tuesday, September 4, 2012 by Anonymous*

**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 by Vicky*

**college math II**

how do you translate the product of 10 and three more than a number in algebraic expression?
*Tuesday, September 4, 2012 by meka*

**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 by Sandra*

**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 by ali*

**College Math**

What would 10 to the 16th power be?
*Monday, September 3, 2012 by Carol*

**College Math**

How do you solve a quadratic equation using the indian method?
*Monday, September 3, 2012 by Quita*

**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 by Mariam*

**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 by Carla Lopez*

**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 by stumped*

**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 by STUMPED*

**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 by Crystal*

** college math**

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

**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 by Carol*

**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 by Carol*

**college chemistry**

Rank from highest to lowest vapor pressure.CH3CH2CH2CH2OH,CH4,CH3CHCH2CH3CH3,CH3CH2CH2CH2CH3
*Friday, August 31, 2012 by deb*

**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 by Anonymous*

**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 by Karla*

**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 by Carol*

**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 by John*

**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 by John*

**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 by Matt*

**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 by Mayga*

**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 by Mayga*

**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 by Matt*

**college economics**

how to weigh marginal cost and marginal benefits when using examples of recent decisions in your life.
*Tuesday, August 28, 2012 by deb*

**psychology**

why would apa format help me in college?
*Tuesday, August 28, 2012 by austin*

**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 by samantha*

**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 by Carol*

**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 by Carol*

**college maths**

In amusement park considering adding some new attractions,conducted a study over several typical days and found that ,of 10,000 families entering the park ,1024 brought just one child (define as younger than age 12),3370 brought two children ,3510 brought three children,1340 ...
*Tuesday, August 28, 2012 by adiba*

**algebra college**

find the remaining zeros of f. degree 4 zeros i, -18+i enter the remaining zeros of f please help me out!
*Monday, August 27, 2012 by ash*

**college algebra**

form a polynomial f(x) with real coefficients having the given degree and zeros degree 4 zeros 5+3i;3 multiplicity 2 enter the polynomial f(x)=a?()
*Monday, August 27, 2012 by ash*

**College Physics**

I keep getting answer wrong. I don't know what I did wrong. I really need help please. I need help with 1 question. Can you help with this please if you don't mind? 1) Suppose you are given that z = c y^3/x^2 where c is some number. For a particular value of c, x and y...
*Sunday, August 26, 2012 by John*

**College math**

A student is asked to answer 7 out of 9 questions on an exam. (a) Classify the problem as a permutation, a combination, or neither.
*Sunday, August 26, 2012 by Leo*

**College math**

From a survey of 100 college students, a marketing research company found that 60 students owned iPhones, 30 owned cars, and 25 owned both cars and iPhones. (a) How many students owned either a car or an iPhone (but not both)?
*Sunday, August 26, 2012 by Leo*

**College Physics**

Convert 15.9 miles/hr to m/s
*Sunday, August 26, 2012 by Carrie*

**college algebra **

an executive invests $29,000 some at 7% and some at 6% annual interest. if he receives an annual return of $1870, how much is invested at each rate?
*Sunday, August 26, 2012 by Devin*

**College Physics I**

A helicopter traveling upward at 120 m/s drops a package from a height of 500 meters. To the nearest second how long does it take to hit the ground?
*Sunday, August 26, 2012 by Dylan*

**College Physics**

A person jumps from a window 34 meters high and is caught in a firefighter's net which stretches 0.6 meter. To the nearest m/s^2, what is the magnitude of the person's acceleration in the net?
*Sunday, August 26, 2012 by Devin*

**math**

From a survey of 100 college students, a marketing research company found that 70 students owned iPhones, 45 owned cars, and 40 owned both cars and iPhones. (a) How many students owned either a car or an iPhone (but not both)? 1 students (b) How many students do not own either...
*Saturday, August 25, 2012 by Anonymous*

**College Math**

Evaluate the expression. (8 7) however the () should cover both numbers. Please explain answer if poss.
*Saturday, August 25, 2012 by Jessica*

**College Math**

A club consists of 16 men and 19 women. In how many ways can they choose a president, vice president, treasurer, and secretary, along with an advisory committee of six people? (Round the answer to five decimal places.) The Answer is blank x 10 to the 11th power ways
*Saturday, August 25, 2012 by Jessica*

**College Math**

Find the amount of interest and the monthly payment for the loan. Purchase a living room set for $3,400 at 12% add-on interest for 5 years. (Round your monthly payment to the nearest cent.)
*Saturday, August 25, 2012 by Jessica*

**college algebra**

use rational zeros theorem to find all the real zeros in the polynomial function. use zeros to factor f over real numbers. f(x)=x^3+10x^2-13x-22 find real zeros of f? use real zeros to factor f?
*Friday, August 24, 2012 by Bella*

**college alg**

form a polynomialf(x) with real coefficients, having the given degree and zeros degree 5; zeros -5;-i; -5+i
*Friday, August 24, 2012 by Bella*

**college algebra**

find the complex zeros of the polynomial function. write f in factored form. use complex zeros to write f in factored form f(x)= x^3-6x^2+21x-26
*Friday, August 24, 2012 by Bella*

**College Algebra**

Write the equation of a circle in standard Find the center, radius intercepts and graph the circle. .........x^2+y^2-12x-4y+36=0
*Friday, August 24, 2012 by Mountain Scott*

**College Algebra**

Find the slope intercept equation of the line with the following properties: Parallel to the line 5x+2y=1; containing points (-5,4)
*Friday, August 24, 2012 by Mountain Scott*

**college algebra !!!**

analyze the graph of the following function. r(x)= x^2+x-6 -------- x^2-x-2
*Wednesday, August 22, 2012 by Bella*

**Social Studies**

The 1978 Supreme Court decision in Bakke v. Regents of the University of California A. ruled in favor of affirmative action within specified limits. B. established the "red state-blue state" divide. C. established the rights of students to appeal college admissions ...
*Wednesday, August 22, 2012 by Sara*

**college algebra**

analyze the graph of the following function. r(x)= x^2+x-6 -------- x^2-x-2 there are 8 steps but they dont make sense to me... please show work!! thanks
*Tuesday, August 21, 2012 by alli*