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April 18, 2015

Homework Help: Math: Algebra

Recent Homework Questions About Algebra

Algebra
The length of a rectangle is 3 times the width. If the length is increased by 4 cm and the width is decreased by 1cm the parimeter will be 102 cm. find the dimensions of the original rectangle. I don't know the equation, please show the work. Not just the answer. So I can ...
Thursday, October 16, 2014 at 3:19pm

Algebra
The length of a rectangle is 3 times the width. If the length is increased by 4 cm and the width is decreased by 1 cm,the parimeter would be 102 cm, find the dimensions of the original rectangle.
Thursday, October 16, 2014 at 3:04pm

Algebra
An algebra book weighs 6oz less than twice as much as a grammar book. If 5 algebra books weigh the same as 8 grammar books, how much does an algebra book weigh.
Thursday, October 16, 2014 at 2:09pm

Algebra
Find the 20th term of the following sequence. -6, -4, -2, 0, ... 32 44 46 I did the math but I don't know if it's correct, I'm not very good in math.
Thursday, October 16, 2014 at 11:12am

Algebra
Find the common difference for the given sequence. 1.05, 1.1, 1.15, 1.2, ... 0.005 0.05 0.5
Thursday, October 16, 2014 at 11:00am

algebra proof
Prove (ab)/b=a Proof 1. (ab)/b=(ab)x 1/b Is this property of reciprocal? or definition of division
Thursday, October 16, 2014 at 6:33am

Algebra 2
Hi, I need help finding the domain and range of the Quadratic Model on part b. I've included part a. just in case you may need it. a.The parabolic path of a thrown ball can be modeled by the table. the top of the wall is at (5,6). Will the ball go over the wall? If not,...
Wednesday, October 15, 2014 at 8:58pm

Algebra 2
Flying with the wind, a small plane flew 332 mi in 2 h. Flying against the wind, the plane could fly only 318 mi in the same amount of time. Find the rate of the plane in calm air and the rate of the wind
Wednesday, October 15, 2014 at 8:47pm

Quick math help
I'm on the topic of "Algebra proofs". Is this statement an example of a transitive property?: If CD=AB and AB=8 then CD=8 Here's another problem I want you to check& note that I only have 4 blanks per side of the table (statements and reasons) Given: 2(x+3)=...
Wednesday, October 15, 2014 at 8:23pm

Algebra 2
solve each inequality or equation. Graph the solution. 5(absolute value 3w+2)-3>7 *Please show me the work
Wednesday, October 15, 2014 at 6:47pm

Algebra 2
write an equation to solve each problem There is only one freshman in the cast of the high school musical. There are 6 sophomore and 11 juniors. One third of the cast are seniors. How may seniors are in the musical? *Please show me the work on how to do it
Wednesday, October 15, 2014 at 6:43pm

Algebra 2
write an equation to solve each problem Briana and her sister Molly want to buy the same model bicycle. Briana needs $73 more before she can afford the bike. Molly needs $65 more. If they combine their money, they will have just enough to buy one bicycle that they could share...
Wednesday, October 15, 2014 at 6:39pm

Algebra Help
Determine without graphing, whether the given quadratic function has a max value or min value and then find the value. F(x)=2x^2+16x-1
Wednesday, October 15, 2014 at 4:17pm

Algebra Help
find real solutions sq.root 2x+5 - sq.root x+6 = 1
Wednesday, October 15, 2014 at 12:59pm

algebra
I need help factoring.Please! 1.4x^4-4x^2+1 2.a^4+a^2
Wednesday, October 15, 2014 at 12:53pm

algebra
Factor each of the following polynomials. 1. x^2+x-6 2. 6x^2+13x-5 Thanx!
Wednesday, October 15, 2014 at 12:49pm

Algebra 2
or a livestock competition, the weight classes for hogs are shown in this table. Classes: Light: 200-230 (weight range in lbs.) Heavy: 230-250 (weight range in lbs.) a. What is the center of each weight class? A: Center of Light class: 215 pounds (lb.) Center of Heavy class: ...
Wednesday, October 15, 2014 at 11:16am

algebra
Using a proportion, determine how many pounds of apples a person needs for a pie for 10 when the recipe calls for three pounds of apples for an apple pie for eight people.
Wednesday, October 15, 2014 at 11:06am

Algebra Answer Check
What polynomial could you subtract from 5x^3 - 12x - x^2 + 9 - 12x^5 - 6x^4 to give a difference of 19 + 8x^3 - 18x - 19x^5 - 2x^2 - 8x^4? Is the answer k (the polynomial) = 7x^5 + 2x^4 - 3x^3 + x^2 + 6x - 28?
Wednesday, October 15, 2014 at 10:27am

Algebra 2 (PLEASE, HELP ME!)
For a livestock competition, the weight classes for hogs are shown in this table. Classes: Light: 200-230 (weight range in lbs.) Heavy: 230-250 (weight range in lbs.) a. What is the center of each weight class? A: Center of Light class: 215 pounds (lb.) Center of Heavy class: ...
Wednesday, October 15, 2014 at 5:17am

algebra
you want to build a playhouse for your sister in your backyard. You have the blue print which show the playhouse is 13 feet long and 12 feet wide. you want to change the dimension such that the lenght will be decreased and the width will be increased by the same value. a) ...
Wednesday, October 15, 2014 at 4:13am

math college algebra
lynne is 24 years old. lynne is twice as old as jean was when lynne is as old as jean is now. how old is jean ?
Wednesday, October 15, 2014 at 12:00am

Algebra 1
Constance is saving money to buy a new bicycle that costs $195.75. She already has $40 saved and plans to save $8 each week. How many weeks will it take her to save enough money to purchase the bicycle? Please help answer thanks
Tuesday, October 14, 2014 at 9:16pm

Algebra
What polynomial could you subtract from 5x^3 - 12x - x^2 + 9 - 12x^5 - 6x^4 to give a difference of 19 + 8x^3 - 18x - 19x^5 - 2x^2 - 8x^4? Is the answer k (the polynomial) = 7x^5 + 2x^4 - 3x^3 + x^2 + 6x - 28?
Tuesday, October 14, 2014 at 7:20pm

Algebra
f(x)=2x^+x-21 x= ___(smaller Value) x= ___(Larger Value) What am I doing wrong? f(x)=0 2x^+x-21=0 (2x+21)(x-19)=0 2x=-21 x=19
Tuesday, October 14, 2014 at 6:27pm

Algebra
The circumference of a circle is found by the formula C=pi(d) where d is the diameter of the circle. Does circumference vary directly as diameter? If so what is the constant of variation
Tuesday, October 14, 2014 at 6:09pm

Algebra 2 (Please, help me!)
For a livestock competition, the weight classes for hogs are shown in this table. Classes: Light: 200-230 (weight range in lbs.) Heavy: 230-250 (weight range in lbs.) a. What is the center of each weight class? A: Center of Light class: 215 pounds (lb.) Center of Heavy class: ...
Tuesday, October 14, 2014 at 5:40pm

algebra
You began a new job at a pizza shop 3 weeks ago. You worked 6 hours during the first week, 4 hours during the second week, and 10 hours during the third week. Which graph best represents the total hours you worked over these 3 weeeks? i tried solving it myself and found an ...
Tuesday, October 14, 2014 at 4:27pm

algebra
If 6(-3+n)=60, what is the value of n?
Tuesday, October 14, 2014 at 3:37pm

Algebra Answer Check
(7x^3 + 2x - 1) + (8x^2 - 6 + 2x - x^3) Ans: 6x^3 + 8x^2 + 4x - 7
Tuesday, October 14, 2014 at 3:36pm

algebra
for the period 1990-2003, the amount of biscuits and pasta y(in thousands of tons) imported to the united states can be modeled by the function: y=1.36x^2+27.8x+77 how many tons obiscuits and pasta were imported to the states in 1999? in which year was the maximum imported? ...
Tuesday, October 14, 2014 at 6:24am

Algebra 2
For a livestock competition, the weight classes for hogs are shown in this table. Classes: Light: 200-230 (weight range in lbs.) Heavy: 230-250 (weight range in lbs.) a. What is the center of each weight class? A: Center of Light class: 215 pounds (lb.) Center of Heavy class: ...
Tuesday, October 14, 2014 at 12:23am

Algebra
Mina's catering service is organizing a formal dinner for 280 people.The hall has two kinds of tables, one that seats 4 people and one that seats 10 people.The hall can contain up to a total of 52 tables.Write and graph a system of inequalities that can be used to ...
Monday, October 13, 2014 at 11:36pm

Algebra
Write and solve an equation to find the number of miles you must drive to have the same cost of the car rentals. $15 plus $0.50 per mile $25 plus $.25 per mile
Monday, October 13, 2014 at 10:49pm

Algebra 2 (Please, help me!)
For a livestock competition, the weight classes for hogs are shown in this table. Classes: Light: 200-230 (weight range in lbs.) Heavy: 230-250 (weight range in lbs.) a. What is the center of each weight class? A: Center of Light class: 215 pounds (lb.) Center of Heavy class: ...
Monday, October 13, 2014 at 10:11pm

Algebra 1
To find the weight of the gold in a 22 karat gold object, multiply the objects weight by 0.917. To find the weight of the gold in an 18 karat gold object, multiply the objects weight by 0.583. A 22 karat gold statue and a 14 karat gold statue both weigh 73.5 ounces. Which one ...
Monday, October 13, 2014 at 8:53pm

Algebra 1
A jeweler buys gold jewelry and resells the gold to a refinery. The jeweler buys gold for $1,235.55 per ounce, and then resells it for $1,376.44 per ounce. How much profit does the jeweler make from buying and reselling 73.5 ounces of gold? Please help answer question thanks
Monday, October 13, 2014 at 8:49pm

algebra
a square separated into squares and rectangles. with a and x assigned to squares and rectangles along edge of square.have no clue what to do with this.
Monday, October 13, 2014 at 8:46pm

Algebra
Find the zeros of f. f(x) = 2x2 + x − 21 x = ____ (smaller value) x = ____ (larger value)
Monday, October 13, 2014 at 8:42pm

Algebra
A boat was purchased for $45,000. Assuming the boat depreciates at a rate of $4700 per year (straight-line depreciation) for the first 8 years, write the value v of the boat as a function of the time t (measured in years) for 0 ¡Ü t ¡Ü 8. v(t) = _______...
Monday, October 13, 2014 at 8:29pm

Algebra
What is the mean and extremes of proportions?
Monday, October 13, 2014 at 8:19pm

Algebra
Find the values of a in the domain of f for which f(a)equals the given number. (If there is no solution, enter NO SOLUTION.) f(x) = x2 − 4x − 19; f(a) = 13 a = ____ (smaller value) a = ____ (larger value)
Monday, October 13, 2014 at 7:45pm

Algebra
Start from 110 feet away, a person on a bicycle rides toward a checkpoint a nd then passes it. The rider is traveling at a constant of 30m feet per second. The distance between the bicycle and the checkpoint is given by the equation d=(110-30t). At what times is the bike 40 ...
Monday, October 13, 2014 at 6:46pm

Algebra 2
How am I supposed to graph g(x) = |x|/2 - 3/4?
Monday, October 13, 2014 at 6:13pm

Linear Algebra
Find the eigenvalues and corresponding eigenvectors of the matrix: 0 0 1 M = 1 0 0 0 1 0
Monday, October 13, 2014 at 5:48pm

Algebra word problem
A lunch stand makes $.75 profit on each chef's salad and $1.20 profit on each Caesar salad. On a typical weekday, it sells between 40 and 60 chef's salads and between 35 and 50 Caesar salads. The total number has never exceeded 100 salads. How many of each should be ...
Monday, October 13, 2014 at 5:33pm

Algebra 2 Answer Check
A food order at a restaurant is paid for with a $10 bill. What function represents the difference between the cost of the food and the change returned? Assume that this difference is nonnegative. A: f(x) = |2x -10|
Monday, October 13, 2014 at 4:33pm

Algebra 2
Solve each equation. 1. (|3x -4|)/(-5) = 6 A: no solution 2. (|2x -5|) = x + 3 A: x = 8 or x = 2/3 Solve each inequality. 3. |5x + 15| > 20 A: x > 1 and x < -7 4. [(|x - 2|)/ (4) greater than or equal to 5 A: -18 < x < 22 5. (-3) x (|5x - 8|)- 5 greater than or...
Monday, October 13, 2014 at 4:29pm

Algebra 2 Answer Check
Solve each equation. 1. (|3x -4|)/(-5) = 6 A: no solution 2. (|2x -5|) = x + 3 A: x = 8 or x = 2/3 Solve each inequality. 3. |5x + 15| > 20 A: x > 1 and x < -7 4. [(|x - 2|)/ (4) greater than or equal to 5 A: -18 < x < 22 5. (-3) x (|5x - 8|)- 5 greater than or ...
Monday, October 13, 2014 at 2:53pm

Algebra 2
4a+2b+c=10 100a+10b+c=12 16a+4b+c=12 I need help to solve this problem. I keeping getting A=1.70 B=2.0 and C=5. My book says that is wrong, could you show me how to get the correct answer?
Monday, October 13, 2014 at 2:00pm

Algebra help
Given f(x) = 5x 1. What is f(2)? is it 9?
Monday, October 13, 2014 at 1:16pm

Algebra
please help me im confused. Every item in the Just a Dollar store is priced at $1.00. When Mary Jo opens the store, there is $122.00 in the cash register. When she counts the money in the cash register at the end of the day, the total is $1,065.95. If the sales tax rate is 8.5...
Monday, October 13, 2014 at 12:25am

algebra
Foursquare provides a service that allows your friend to know your whereabouts by checking in . From march 2010 to march 2011 it experienced amazing growth. The function : F(x)=1/18x^2 - 1/12^x + 1/2 Evaluate F(3)? Determine when foursquare had 4.25 million users ?
Sunday, October 12, 2014 at 10:29pm

algebra
suppose that an employee receives 7% increase in salary each year and that sequence a^n models the employees salary after n years. Is this sequence arithmetic, geometric or neither ? and please explain
Sunday, October 12, 2014 at 10:23pm

Algebra
The velocity of a ball thrown in the air is 72ft Per second. The height of the ball after t seconds Is represented by the equation H = 72ft t - 62t^2. Describe the dependent variable, the domain and range. Honestly I have to say I am lost 72 + 72ft - 256 = ? 72 + 184t =0
Sunday, October 12, 2014 at 8:56pm

Algebra 2
Please can you explain this problem to me. v = 1/3 π r^2 h Thank you in advance for your help
Sunday, October 12, 2014 at 8:24pm

Algebra
The function f(x) = 3x describes the amount Of money a club will earn for wrapping x presents. They only have enough paper to wrap 1000 presents. X = 1000 Y = 3x What would the dependent variable be? Domain and range using appropriate notation Range : (3x, ?) Domain: (1000, ?)
Sunday, October 12, 2014 at 8:08pm

algebra
Find all points on the x-axis that are 10 units from the point (7, 6). (Hint: First write the distance formula with (7, 6) as one of the points and (x, 0) as the other point.)
Sunday, October 12, 2014 at 7:26pm

Algebra
The function f(x) = 3x describes the amount Of money a club will earn for wrapping x presents. They only have enough paper to wrap 1000 presents. 3 x 1000 = 3000 dollars for wrapping presents ?
Sunday, October 12, 2014 at 4:39pm

Algebra
The surface area of a cube can be found using the formula A = 6s^2 where A represents the surface area of the cube and s represents the length of one edge. My teacher wants me to draw a cube that has a length of at least 5 inches. She also wants to know the independent ...
Sunday, October 12, 2014 at 4:33pm

Algebra
The velocity of a ball thrown in the air is 72ft Per second. The height of the ball after t seconds Is represented by the equation H = 72ft t - 62t^2. Describe the dependent variable, the domain and range. Honestly I have to say I am lost 72 x 72ft - 256 = ? Not sure if I am ...
Sunday, October 12, 2014 at 4:10pm

Algebra
H(t) = 72ft t - 16t^2 How would I go about to solve 72 - 16^2 = 72 - 256 = 184
Sunday, October 12, 2014 at 3:03pm

Algebra 2 Answer Check (Reiny)
Compress f(x) = |2x| - 3 vertically by a factor of 1/4. A: g(x) = |8x| - 3
Sunday, October 12, 2014 at 2:01pm

College Algebra
When MyKing Burgers charges a price p dollars for one of its burgers, its revenue in dollars is given by R(p) = −200p(p − 10) For what prices does the company have no revenue? for this problem do i set the equation at 0=-200p(p-10) and solve from there?
Sunday, October 12, 2014 at 1:42pm

Algebra
Darren McFadden of Arkansas placed second overall in the Heisman Tophy voting. Players are given 3 points for every first place vote, 2 points for every second-place vote, and 1point for every third place vote. McFadden received 490 total votes for a total of 878 points. If he...
Sunday, October 12, 2014 at 12:31pm

Algebra: help!
Solve for x in each of the following: a: 2/3x = 11/6 b: 3/4 / x = 1/3 c: 5/6 - 2/3x = 3/4 d: 2x/3 + 1/4 = x/6 - 1/2 Please help me and explain, I don't get fractions at all!
Sunday, October 12, 2014 at 12:51am

Algebra: help
A person has 29 1/2 yards of material available to make doll outfits. Each outfit requires 3/4 yard of material. a: How many outfits can be made? b: How much material will be left over?
Sunday, October 12, 2014 at 12:39am

Algebra
the length of the longer leg of a right triangle is 13 ft more than 3 times the length of the shorter leg. the length of the hypotenuse is 14 ft more than 3 times the length of the shorter leg. Find the side lengths of the triangle
Saturday, October 11, 2014 at 11:36pm

Algebra
Hector’s service club is raising money by wrapping presents in the mall. The function f(x) = 3x describes the amount of money, in dollars, the club will earn for wrapping x presents. They only have enough wrapping paper to wrap 1000 presents. Describe the domain and range...
Saturday, October 11, 2014 at 10:32pm

Algebra
how do you solve this problem 3 - q = 15
Saturday, October 11, 2014 at 10:13pm

Algebra 2
Juan is comparing the cell phone plans shown in the advertisement. Plan A charges a $15 monthly fee plus $0.40 per min. Plan B charges a $30 monthly fee plus $0.25 per min. For what number of minutes of use do the plans cost the same? How much will that be?
Saturday, October 11, 2014 at 10:02pm

Algebra
Hector’s service club is raising money by wrapping presents in the mall. The function f(x) = 3x describes the amount of money, in dollars, the club will earn for wrapping x presents. They only have enough wrapping paper to wrap 1000 presents. Describe the domain and range...
Saturday, October 11, 2014 at 9:55pm

Algebra 2
Will you explain how to stretch f(x) = |2x| - 3 horizontally by a factor of 3/2?
Saturday, October 11, 2014 at 9:46pm

Algebra 2 (Reiny)
How am I supposed to compress f(x) = |2x| - 3 vertically by a factor of 1/4? Please, will you explain this to me?
Saturday, October 11, 2014 at 9:43pm

Algebra 2 Answer Check
Classify each system and determine the number of solutions. {3y = 2x; -4x + 6y = 3 A: inconsistent; no solution
Saturday, October 11, 2014 at 8:16pm

Math College (Algebra)
How to solve this system? x + [(3x-y)/(x^2+y^2)] = 3 y - [(x+3y)/(x^2+y^2)] = 0
Saturday, October 11, 2014 at 7:19pm

Algebra 2
solve each system of equation 3x+5y+2z=4 2x-2y+3z=-4 x+y+z=0 *could you show work because I want to learn how you got this answer
Saturday, October 11, 2014 at 5:35pm

algebra
Determine whether the set {[1 4], [-1 6], [3 8]} is a basis of R^2
Saturday, October 11, 2014 at 4:44pm

Algebra 1
A car is traveling at a rate of 80 kilometers per hour. Set up the equation that would convert the speed to meters per second. Then evaluate
Saturday, October 11, 2014 at 10:51am

Algebra word problem
A parabolic arch has a height of 20 m and a width of 36 m at the base. If the vertex of the parabola is at the top of the arch, at which height above the base is it 18 m wide?
Saturday, October 11, 2014 at 9:30am

College Algebra
How to find the values of x,y and z and to show the condition stated below? 2yz + zx − 5xy = 2 yz − zx + 2xy = 1 yz − 2zx + 6xy = 3 Show that xyz = ±6 and find all possible values of x, y and z.
Saturday, October 11, 2014 at 9:27am

College Algebra
How to solve this system? x + [(3x-y)/(x^2+y^2)] = 3 y - [(x+3y)/(x^2+y^2)] = 0
Saturday, October 11, 2014 at 9:25am

College Algebra
Solve for x in terms of the other symbols: rsx^2 + s^2 x + rtx + st = 0
Saturday, October 11, 2014 at 9:21am

Algebra
A person has 29 1/2 yards of material available to make doll outfits. Each outfit requires 3/4 yard of material. a: How many outfits can be made? b: How much material will be left over?
Saturday, October 11, 2014 at 7:26am

Algebra, help please!!!
Solve for x in each of the following: a: 2/3x = 11/6 b: 3/4 / x = 1/3 c: 5/6 - 2/3x = 3/4 d: 2x/3 + 1/4 = x/6 - 1/2 Please help me and explain, I don't get fractions at all!
Saturday, October 11, 2014 at 7:21am

HELP!! Algebra
A student claims that division always makes things smaller so 5 / (1/2) cannot 10 because 10 is greater than the number 5 she started with. How do you respond? I don't understand this question at all!!
Saturday, October 11, 2014 at 2:32am

Algebra 2
What are the steps to performing the following transformation and then graphing it? Transformation: Stretch f(x) = |2x| - 3 horizontally by a factor of 3/2.
Friday, October 10, 2014 at 7:36pm

Algebra 2
What are the steps to performing the following transformation and then graphing it? Transformation: compress f(x) = |2x| - 3 vertically by a factor of 1/4.
Friday, October 10, 2014 at 7:33pm

Pre algebra
when a skydiver jumps from an airplane, the distance of d in feet the diver falls in t seconds before opening the parachute is given by the formula d=16t^2 (the formula asumes that there is no air resistance) find the time it takes a skydiver to fall 1,296ft before openening ...
Friday, October 10, 2014 at 6:13pm

Algebra
5/2 = 46/3 46/3 x 2/5 = 92/15
Friday, October 10, 2014 at 1:32pm

algebra
how do u solve x^3+2x^2-6x-6=(x-2)(x+3)(x+k)
Thursday, October 9, 2014 at 10:26pm

Algebra
Veronica's cell phone plan costs $35 dollars per month plus $0.05 per minute used. Veronica's bill last month was $40.75. How many minutes did she use? 40.75 divided by .05 ?
Thursday, October 9, 2014 at 10:07pm

Algebra
PLease ,Please ,Please help me solve this problems #1 Since x = 3y-4, -3(3y-4)+4y = -3 now just solve for y and then x #2 Since x = 4+4y, -(4+4y) = 4y=-4 or something Again, solve for y, then x
Thursday, October 9, 2014 at 8:46pm

Algebra
Business Computers English Foreign Languages Health Home Economics Math Music Physical Education Science Social Studies GRADE LEVELS Preschool Kindergarten Elementary School 1st Grade 2nd Grade 3rd Grade 4th Grade 5th Grade 6th Grade 7th Grade 8th Grade High School 9th Grade ...
Thursday, October 9, 2014 at 8:35pm

Algebra
Graph the system below and write its solution. =3x+y−6 =y−1/2x-1
Thursday, October 9, 2014 at 8:25pm

Algebra
Solve the compound inequality. >−2x3−11 or ≥+3x36 Write the solution in interval notation. If there is no solution, enter ∅ .
Thursday, October 9, 2014 at 8:16pm

Algebra
Solve the compound inequality. <−16<−2x4−4 Graph the solution on the number line.
Thursday, October 9, 2014 at 8:15pm

Algebra 2
The sets D and E are defined as follows. =D>z|z4 D={z|z74} E={z|z<=7} Write ∩DE and ∪DE using interval notation. If the set is empty, write ∅ .
Thursday, October 9, 2014 at 8:14pm

Algebra
Solve the compound inequality. >−2x3−11 or ≥+3x36 Write the solution in interval notation. If there is no solution, enter ∅ .
Thursday, October 9, 2014 at 8:12pm

ALGEBRA 2
Solve the compound inequality. <−16<−2x4−4 Graph the solution on the number line.
Thursday, October 9, 2014 at 8:11pm

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