Sunday

August 30, 2015
**Algebra 1**

Which equation is the equation of a line that passes through (-10,3) and is perpendicular to y=5x-7? 1- y=5x+53 2- y=-1/5x -7 3- y= -1/5x +1 4- y= 1/5x +5
*Saturday, December 6, 2014 by Steve*

**Algebra Help please?**

what is the value in "x" in 16^2 = x
*Saturday, December 6, 2014 by Jeff*

**algebra**

A medical researcher wanted to determine the effect of pH (a measure of alkalinity or acidity, with pure water having a pH of 7) on the growth of a bacteria culture. The table below gives the measurements of different cultures, in thousands of bacteria, after 8 hours. pH ...
*Saturday, December 6, 2014 by Barb*

**algebra**

Flying with the wind, a plane traveled 570 miles in 3 hours. Flying against the wind, the plane traveled the same distance in 5 hours. Find the rate of the plane in calm air and the rate of the wind. Rate of plane ______mph Rate of wind ________mph
*Saturday, December 6, 2014 by Barb*

**algebra**

The fuel efficiency for a certain midsize car is given by E(v)= -0.016v^2+1.408v+3.8, where E(v)is the fuel efficiency in miles per gallon for a car traveling v miles per hour. What speed will yield the maximum fuel efficiency? _______mph. What is the maximum fuel efficiency ...
*Saturday, December 6, 2014 by Barb*

**Algebra**

r=radius 235.619=(15.64)(r)^2+(4.16)(r)^2 How would I solve this problem?
*Saturday, December 6, 2014 by Guillermo*

**Algebra 1**

Which equation is the equation of a line that passes through (-10,3) and is perpendicular to y=5x-7? 1- y=5x+53 2- y=-1/5x -7 3- y= -1/5x +1 4- y= 1/5x +5
*Friday, December 5, 2014 by Steve*

**algebra**

Use properties of logarithms to condense the logarithmic expression. Write the expression as a single logarithm whose coefficient is 1. Where possible, evaluate logarithmic expressions. 4logbx - logby
*Friday, December 5, 2014 by ada*

**algebra (please help)**

A small fast-food restaurant invests $4,000 to produce a new food item that will sell for $4.59. Each item can be produced for $2.19. (a) How many items must be sold to break even? (Round your answer to the nearest whole number.) items (b) How many items must be sold to make a...
*Friday, December 5, 2014 by angie*

**algebra (please help)**

A small software company invests $30,000 to produce a software package that will sell for $64.95. Each unit can be produced for $42.25. (Round your answers to the nearest whole number.) (a) How many units must be sold to break even? units (b) How many units must be sold to ...
*Friday, December 5, 2014 by angie*

**Algebra 2/Trigonometry**

How do I solve f(x)=x^3-6x^2+16x-96 using Descartes' Rule of Signs to find the number of positive and negative real roots, along with imaginary roots, but not with a graph?
*Friday, December 5, 2014 by Christian*

**algebra**

Solve the equation algebraically. Round the result to three decimal places. Verify your answer using a graphing utility. e−^8x − 6xe^−8x = 0 x = I need help solving this problem.
*Friday, December 5, 2014 by angie*

**Intermediate Algebra**

simplify the the lowest term 1. square root of 40x^3 2. square root of 3/4 times square root of 4/7 3. square root of 6 + square root of 20
*Friday, December 5, 2014 by meri*

**Algebra 1**

What equation has a graph parallel to the graph of 9x + 3y = -22? 1- y = 3x -22 2- y = -3x + 8 3- y = 1/3 x + 12 4- y = - 1/3 x - 2
*Friday, December 5, 2014 by Steve*

**intermediate algebra **

simplify to the lowest term Square root of 40x^3
*Friday, December 5, 2014 by meri*

**Algebra**

Please help me to to solve this quadratic equation word problem. Here is the question: The Abacus. The Chinese abacus consists of a frame, parallel wires, and beads that are moved to perform arithmetic computations. The frame is 21 Centimeters longer than it is high, which is ...
*Friday, December 5, 2014 by lpcruz*

**Algebra**

Please help me to to solve this quadratic equation word problem. Here is the question: Studying Microgravity. NASA'S Glen Research Center in Cleveland, Ohio, has a 435-foot drop tower that begins on the surface and descends into Earth like a mineshaft. How long will it ...
*Friday, December 5, 2014 by lpcruz*

**Algebra Help**

determine the max number of real zeros that p(x)=-6x^6+7x^5-4x^4+3x^2+9x-47 has
*Thursday, December 4, 2014 by anonymous.*

**Algebra **

(-5a^2 / b^3)^-1. For a = -4. B= 2 I know you plug in the numbers for a and b but don't know what to do after this is my first time trying a problem like this .
*Thursday, December 4, 2014 by Linda *

**Algebra **

5/square root 20 - 2 square root 45 Help please I have no clue how to do this ok studying for a test 3/y+2 + 2/y = 5y-4/y^2-4 I know you factor then multiply by LCD y(y-2)(y+2) I get stuck right after that step and don't know what to do .
*Thursday, December 4, 2014 by Lexi *

**algebra 1**

A chemist has one solution containing 30% insecticide and another solution containing 50% insecticide. How much of each solution should the chemist mix to get 200 L of a 42% insecticide? My teacher explained how to set up the problem: 3x+5y=84 x+y=200 what I dont get is why ...
*Thursday, December 4, 2014 by ben*

**algebra**

how do you write the simplest polynomial function with the given zeros
*Thursday, December 4, 2014 by john*

**Algebra B PLEASE HELP**

I can't figure this out, please help... A company invests $15,000.00 in an account that compounds interest annually. After two years, the account is worth $16,099.44. Use the function in which r is the annual interest rate, P is the principal, and A is the amount of money ...
*Thursday, December 4, 2014 by Sandra*

**Algebra B**

I can't figure this out, please help... A company invests $15,000.00 in an account that compounds interest annually. After two years, the account is worth $16,099.44. Use the function in which r is the annual interest rate, P is the principal, and A is the amount of money ...
*Thursday, December 4, 2014 by Sandra*

**college algebra**

Find a12 when a1 = 5 and r = – 2.
*Thursday, December 4, 2014 by Anonymous*

**algebra**

how do you write simples polynomial function with the given zero 1-i and 2
*Thursday, December 4, 2014 by john*

**Algebra PLEASE Help**

3(4 - 2x) - -2x SHow how you did it?
*Thursday, December 4, 2014 by Jeff*

**Algebra 1**

The population of a city increases by 4,000 people each year. In 2025 the population is projected to be 450,000 people,. What is the equation that gives the city's population p ( in thousands of people) x years after 2010?
*Thursday, December 4, 2014 by Steve*

**Algebra 1**

What equation represents the line that passes through the points (6,-3)and (-4,-9)?
*Thursday, December 4, 2014 by Steve*

**Algebra 1**

Which point is located on the line represented by the equation y + 4 = -5(x-3)?
*Thursday, December 4, 2014 by Steve*

**Algebra**

A total of $7000 is invested in three accounts. Some was invested at 6%, some at 8%, and the rest at 9%. find the amount invested at each rate if the total interest for one year was $555 and the amount invested at 8% was three times the amount invested at 9%. (assume simple ...
*Thursday, December 4, 2014 by Diego*

**algebra**

For each of the rational functions find: a. domain b. holes c. vertical asymptotes d. horizontal asymptotes e. oblique asymptotes f. y-intercept g. x-intercepts 1. f(x)= x^2+x-2 / x^2-x-6
*Thursday, December 4, 2014 by lisa*

**Coll Algebra**

A grain barge travels on a river from point a to point b unloading and loading again. The barge travels 5mph relative to water. the river flows downstream at a rate of 1mph. if the trip upstream takes 2hrs longer than the trip downstream how far is it from point a to point b
*Thursday, December 4, 2014 by Anonymous*

**Algebra 1**

What is an equation in slope-intercept form for the line that passes through the point (1,-3) and (3,1)
*Thursday, December 4, 2014 by Steve*

**Algebra 1**

For the equation -4y =8x, what is the constant of variation?
*Thursday, December 4, 2014 by Steve*

**Algebra**

Studying Microgravity. NASA'S Glen Research Center in Cleveland, Ohio, has a 435-foot drop tower that begins on the surface and descends into Earth like a mineshaft. How long will it take a sealed container to fall 435 feet? Round to the nearest tenth of a second.
*Thursday, December 4, 2014 by Jay*

**Algebra 1**

Suppose y varies directly with x and y = 24 when x =8. What is the value of y when x = 10?
*Thursday, December 4, 2014 by Steve*

**algebra**

Identify the vertices of the solution region of the system of linear inequalities. (Order your answers from smallest to largest x, then from smallest to largest y.) x ≥ −2 x ≤ 3 y ≤ 5 y ≥ x (x, y) = (x, y) = (x, y) = (x, y) = Tried several times, ...
*Thursday, December 4, 2014 by Abby*

**algebra**

The Fan cost Index(Fci)represents the cost of four average-price tickets, refreshments, and souvenirs to a sporting event. The FCIs for an Independent tennis league and an Independent basketball league totaled $123.62. The basketball FCI was $$6.98 more than that of tennis. ...
*Wednesday, December 3, 2014 by Ernie*

**Algebra 1**

What is an equation in slope-intercept form for the line that passes through the points (1,-3(), (3,1)?
*Wednesday, December 3, 2014 by Steve*

**Algebra 1**

What is an equation for the line with slope 2/3 and y intercept 9?
*Wednesday, December 3, 2014 by Steve*

**Algebra 1**

Suppose y varies directly with x and y = 24 when x =8. What is the value of y when x = 10?
*Wednesday, December 3, 2014 by Steve*

**Algebra 1**

For the equation -4y =8x, what is the constant of variation?
*Wednesday, December 3, 2014 by Steve*

**Algebra 1**

What is the slope of the line that runs through points (1,1), (0,3)?
*Wednesday, December 3, 2014 by Steve*

**College Algebra**

A total of $14,000 is invested in 3 accounts earning 3%, 4%, and 5% annual interest. The combined interest for one year is $539. If the amount invested at 5% is three times the amount at 4%, find the amount invested at 3%.
*Wednesday, December 3, 2014 by Brad*

**Algebra 1**

the point 12,9 is included in a direct variation. what is the constant of variation
*Wednesday, December 3, 2014 by Steve*

**pre-algebra**

The length of a kitchen is 1 1/4 inches. The actual length is 20 feet. What is the scale of the kitchen
*Wednesday, December 3, 2014 by kayla*

**algebra**

how to you solve polynomial equation by factoring x^3 + 3x^2 - 9x = 27
*Wednesday, December 3, 2014 by john*

**Algebra 1**

suppose y varies directly with x and y = 14 when x = -4 what is the value of y when x = -6
*Wednesday, December 3, 2014 by Steve*

**algebra**

solve polynomial equation by factoring x^4 +100 = 29x^2
*Wednesday, December 3, 2014 by john*

**Algebra 1**

The ordered pairs 1,4 - 2,16 - 3,64 - 4,256 - 5, 1024 represents a function. What rule represents this function. 1- 4 x power 2- 4x 3- xto the 4th power 4- x+4 my answer is 4x
*Wednesday, December 3, 2014 by Steve*

**algebra**

solve polynomial equation by factoring 2x^3 - 12x^2 = 32x - 192
*Wednesday, December 3, 2014 by john*

**Algebra **

I am n. I am twice r less 10.
*Wednesday, December 3, 2014 by Arieana Dallas*

**Algebra 1**

The graph shows the number of handbags that Mandy made in one day. What are the variables? Describe how the variables are related at various points on the graph
*Wednesday, December 3, 2014 by Kyler faith*

**Algebra 1**

I've been so stuck on this one question :( can somebody help mee please it would be very much appreciated The graph shows the number
*Wednesday, December 3, 2014 by Kyler faith*

**algebra**

The length of a rectangle is four times its width. If the area of the rectangle is 392 yd, find the perimeter
*Wednesday, December 3, 2014 by Derrick*

**algebra**

If a building contractor hires 5 day laborers and 2 concrete finishers, his payroll for the day is $1200. If he hires i day laborer and 4 concrete finishers, his daily cost is $924. Find the daily wage for each type of worker.
*Tuesday, December 2, 2014 by Ernie*

**algebra **

what is the error in finding the sum? 3/10 + (-1/10) = 3+1/10 = 4/10 = 2/5 what is the correction?
*Tuesday, December 2, 2014 by Felicity *

**algebra**

how do you solve polynomial equation by factoring 3x^4 + 11x^3 = 4x^2
*Tuesday, December 2, 2014 by john*

**algebra**

The Fan cost Index(Fci)represents the cost of four average-price tickets, refreshments, and souvenirs to a sporting event. The FCIs for an Independent tennis league and an Independent basketball league totaled $123.62. The basketball FCI was $$6.98 more than that of tennis. ...
*Tuesday, December 2, 2014 by Ernie*

**Algebra**

The fuel efficiency for a certain midsize car is given by E(v) = −0.017v^ + 1.462v + 3.5 where E(v)is the fuel efficiency in miles per gallon for a car traveling v miles per hour. (a) What speed will yield the maximum fuel efficiency? Round to the nearest mile per hour. ...
*Tuesday, December 2, 2014 by Anonymous*

**algebra**

The Fan cost Index(Fci)represents the cost of four average-price tickets, refreshments, and souvenirs to a sporting event. The FCIs for an Independent tennis league and an Independent basketball league totaled $123.62. The basketball FCI was $$6.98 more than that of tennis. ...
*Tuesday, December 2, 2014 by Ernie*

**math**

what is the answer to the famous farming exression, from creative publications pre-algebra with pizzaz
*Tuesday, December 2, 2014 by Mia*

**Math Pre-Algebra **

Find the quotient -16/0?
*Tuesday, December 2, 2014 by Lisa Aul*

**coordinate algebra**

The area of a rectangle is found by multiplying the length by the width: A = lw. A certain rectangle has an area of x2 + 7x + 12. Factor the trinomial to find the length and width of the rectangle. In the form of a paragraph, describe the process necessary to factor the area ...
*Tuesday, December 2, 2014 by chelsea*

**algebra**

a rectangle has a perimeter of 30 inches.Its length is one less than three times its width. what are the length and widths of the rectangle
*Tuesday, December 2, 2014 by kae*

**Algebra **

Write an addition expression using fractions that equals -1/2. I'm not sure how to do this, please help!
*Tuesday, December 2, 2014 by Arnold*

**algebra **

a grocery store has 116 bags of marshmallows. over 6 months, it sells 8 bags of marshmallows per month. how many marshmallows are in inventory at the end of 6 months?
*Tuesday, December 2, 2014 by charlie*

**algebra**

The perimeter of a triangle is 57in. The longest side is 13in. longer than the medium side, and the medium side is 7 in. more than the shortest side. find the length of each side of the triangle. The length of the longest side is ___in, the length of the medium side is __in. ...
*Monday, December 1, 2014 by Ernie*

**algebra**

Find the doubling time of an investment earning 7% interest if interest is compounded continuously is ____years. Round to the nearest tenth of a year.
*Monday, December 1, 2014 by Ernie*

**algebra**

``If 18g of a radioactive substance are present initially and 5 yr later only 9 g remain, how much of the substance will be present after 11yr ? after 11yr there will be ___g of a radioactive substance. round the final answer to the nearest thousandth as needed. round all ...
*Monday, December 1, 2014 by Ernie*

**Algebra**

Find the real zeros of f. (Enter your answers as a comma-separated list.) f(x) = −x2 + 7x + 8x X =_____ Find the x-intercepts of the graph of f. (x, y) =_______(smaller x-value) (x, y) =_______(larger x-value)
*Monday, December 1, 2014 by Patty*

**algebra**

using long division (x^6 - 4x^5 -7x^3) / (2x^3)
*Monday, December 1, 2014 by john*

**Algebra**

A medical researcher wanted to determine the effect of pH (a measure of alkalinity or acidity, with pure water having a pH of 7) on the growth of a bacteria culture. The table below gives the measurements of different cultures, in thousands of bacteria, after 8 hours. pH ...
*Monday, December 1, 2014 by Patty*

**Algebra**

The fuel efficiency for a certain midsize car is given by E(v) = −0.017v^ + 1.462v + 3.5 where E(v)is the fuel efficiency in miles per gallon for a car traveling v miles per hour. (a) What speed will yield the maximum fuel efficiency? Round to the nearest mile per hour. ...
*Monday, December 1, 2014 by Kimberly*

**algebra**

Solve for x. (Round your answer to three decimal places.) log7 x = 1/2 x=
*Monday, December 1, 2014 by angie*

**college algebra**

Find the Inverse (x)=√2x+9
*Monday, December 1, 2014 by tracy*

**Algebra 1**

use the vertical line test to determine if the relation(-6,-2), (-2,6),(0,3),(3,5) is a function
*Monday, December 1, 2014 by Steve*

**Algebra 1**

What is the graph of the function rule? y=I5xI -2
*Monday, December 1, 2014 by Steve*

**Algebra 2**

Solving Quadratic Systems x^2+y^2=2 x^2-6y=10 I'm having trouble solving this problem.
*Monday, December 1, 2014 by Michelle*

**pretty algebra**

A commuter train pulling 8 cars had room for another 84 passengers. Halfway...
*Monday, December 1, 2014 by Anonymous*

**Algebra**

A recipe for a home-made disinfectant calls for adding one-half cup of clorox to one gallon of water. Mrs. Jenkins wants to make this solution in a 32-ounce spray bottle. How many fluid ounces of clorox should be added to 32 fluid ounces of water to have the same clorox-to-...
*Monday, December 1, 2014 by Help!!!*

**Algebra 1**

The ordered pairs(1,4), (2,16), (3,64), (4,256),(5,1024) represent a function. What is a rule that represents,this function? My answer is y=x to the 4th power
*Monday, December 1, 2014 by Steve*

**Algebra 1**

The table shows the relationship between the number of players on a team and the minutes each player gets to play. Players minutes 7 35 8 30 9 25 10 20 Is the relationship a function that ism increasing or decreasing? Is the relationship a function that is linear or nonlinear...
*Monday, December 1, 2014 by Steve*

**Algebra 1**

Write an equation that relates the number of parallelograms in the figure (n), to the perimeter of the figure (P). /_/ /_/_/ /_/_/_/ The top and bottom = 5 each and the sides = 4 each in each figure.
*Monday, December 1, 2014 by Steve*

**Algebra 2**

Solving Quadratic Systems x^2+y^2=20 x^2-6y=28 PLEASE SHOW WORK I'M HAVING TROUBLE SOLVING IT
*Monday, December 1, 2014 by Alicia*

**Algebra 2**

Solving Quadratic Systems x^2+y^2=2 x^2-6y=10 Please show work I'm having trouble solving it
*Monday, December 1, 2014 by Alicia*

**algebra 2**

x^2-18x-40=0
*Monday, December 1, 2014 by anonymous*

**algebra 2**

Solve for x. 250= (13+x)^2
*Monday, December 1, 2014 by anonymous*

**algebra**

Develop a tree diagram for tossing two, eight-sided gaming dice to figure out how many possibilities there are. Discuss the purpose of using such a visual in working out probability.
*Sunday, November 30, 2014 by larry*

**Algebra **

A woman wishes to invest $12,500 in three types of bonds: municipal bonds paying 8% interest per year, bank investment certificates paying 9%, and high-risk bonds paying 12%. For tax reasons she wants the amount invested in municipal bonds to be at least three times the amount...
*Sunday, November 30, 2014 by Jessica*

**Algebra**

A confectioner sells two types of nut mixtures. The standard-mixture package contains 100 g of cashews and 200 g of peanuts and sells for $1.85. The deluxe-mixture package contains 150 g of cashews and 50 g of peanuts and sells for $2.45. The confectioner has 15 kg of cashews ...
*Sunday, November 30, 2014 by Jessica*

**algebra**

You must submit your response as a file. An object’s weight depends on its height above the surface of the earth. If a man weighs 190 pounds on the surface of the earth, then the man's weight in pounds (W) x miles above the surface is approximated by the formula: W...
*Sunday, November 30, 2014 by darlene*

**Algebra word problem**

Mary is two years older than Robert. The sum of their ages is 28. Write an expression for each person, write the equation for the situation and find out how old each person is.
*Sunday, November 30, 2014 by Lee Ann*

**Algebra**

(7.8*10 to the 12th power)*800=(7.8*10 to the 10th power)*80,000 Directions:tell whether each equation is true or false. if false, write the inequality in like terms I don't remember how to start multiplying.
*Sunday, November 30, 2014 by Bob*

**Algebra**

What is the probability of obtaining tails and a sis?
*Sunday, November 30, 2014 by Maxine*

**Algebra **

Math The Monahans have 21 meters of fencing with which to enclose a garden. If they plan to make the garden twice as long as it is wide, what is its maximum width?
*Saturday, November 29, 2014 by Vonna*

**algebra 2**

Solve for the unknown. 1.) √y+√y+7=7 2.) √x+11=√x +1
*Saturday, November 29, 2014 by Janet*

**algebra**

A traveler required a total of 12 h on the round trip, averaging 20mi/h and 30 mi/h. Find a time in hours going using a T for this.
*Saturday, November 29, 2014 by ER*

**Algebra B**

What is the coefficient of x in the division (18x3 + 12x2 – 3x) ÷ 6x2 ? 3 2 –0.5 –3 I am helping my granddaughter and I need help to explain...
*Saturday, November 29, 2014 by Anonymous*