Monday
December 22, 2014

Homework Help: Math: Algebra

Recent Homework Questions About Algebra

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Algebra
Ms. Chang has 24 students in her class, and 8 of them are boys. What is the ratio of boys to girls? A. 1:2 B. 1:3 C. 2:1 D. 2:3 I think the answer is D but i'n not sure.
Friday, June 13, 2014 at 10:24pm

Algebra
The area of a rectangular painting is given by the trinomial x^2+2x-15. What are the possible dimensions of the painting? Use factoring.
Friday, June 13, 2014 at 10:22pm

Algebra, can some show me how to set this up
If f(x) = x − 7, find the following. f(13) f(-6) f(p) Thank you, you guys do not know what it means to me that I have a site that has a wonderful group of people to help us trying to understand.
Friday, June 13, 2014 at 8:51pm

Algebra ll
Consider the system below. {4x-2y=-12} {3x-y=-3} Solve the system by using a matrix equation.
Friday, June 13, 2014 at 7:59pm

Algebra
1/x+1/x+5+1/3x=1/2.25 Solve for x.
Friday, June 13, 2014 at 7:45pm

algebra
also do not understand how to do this. I am not asking for answes, just examples. Solve using the substitution method. 3x – 4y = 5 2x – y = 1
Friday, June 13, 2014 at 6:12pm

algebra
Solve the system graphically. If a system has an infinite number of solutions, use set-builder notation to write the solution set. If a system has no solution, state this. 2x – y = 4 5x – y = 13 I do not understand how to do this
Friday, June 13, 2014 at 6:07pm

algebra
There are n people on a bus . At the next stop y people get off and then t people get on. How many people are there now on the bus.
Friday, June 13, 2014 at 5:30pm

Algebra ll
Consider the function f(x) = x4 – 3x3 – 7x2 + 15x + 18. Use synthetic division to divide f(x) by x – 3. Use the answer to explain whether or not x – 3 is a factor of f(x).Factor f(x) completely.
Friday, June 13, 2014 at 4:10pm

Algebra
Since the opening night, attendance at Play A has increased steadily, while attendance at Play B first rose and then fell. Equations modeling the daily attendance y at each play are shown below, where x is the number of days since the opening night. On what day(S) was the ...
Friday, June 13, 2014 at 2:51pm

Algebra
A garden is going to be built in the city park. the garden height is 5m. and the width is 7.5 m. a. A short fence will be built around the perimeter of the garden region. Find the number of meters of fencing required. Round your answer to the nearest tenth of a meter. Show all...
Friday, June 13, 2014 at 2:10pm

Algebra please can you ck my work
Evaluate the given expressions (to two decimal places). log 1.69 =123 log 2^512 = .09 log 2^1 = 0 log o.o46 =1.34 Thank you
Friday, June 13, 2014 at 2:01pm

algebra/please can you ck my answers
Tell what the output value is for the function machine for the given values. log 16.9=1.23 log2^152=9 log2^1=0 log0.046=1.34 thank you
Friday, June 13, 2014 at 1:49pm

Algebra
1. A printer can print 40 pages in 1.6 minutes. a. Write and solve a proportion to find the number of pages that the printer can print in 5 minutes. Show your work. b. Lana wants to use the printer to print 150 pages. Find the time, in minutes, it will take to print 150 pages...
Friday, June 13, 2014 at 1:42pm

algebra
cube labeled 1 to 6 rolls 450 times. predict rolling less than 3
Friday, June 13, 2014 at 12:28pm

Algebra ll
Bernardo divided one polynomial by another, as shown below. (9x2-9x-10)/(3x+2) What is the quotient? A. 3x-1 + -8/3x+2 B. 3x-1 + -12/3x+2 C. 3x+5 D. 3x-5
Friday, June 13, 2014 at 10:57am

algebra 2
Maria created a graph of B(t), the temperature over time. For the interval between t = 3 and t = 7, the average rate of change in her graph of B(t) is 8. Which statement must be true?
Friday, June 13, 2014 at 10:29am

Algebra (Factoring)
What's the easiest way to factor this completely? 2x^4-10x^2-72 A step-by-step solution would really help me a lot. Thanks :)
Friday, June 13, 2014 at 9:51am

Algebra
I need help with this question; A printer can print 40 pages in 1.6 minutes. a. Write and solve a proportion to find the number of pages that the printer can print in 5 minutes. b. Lana wants to use the printer to print 150 pages. Find the time, in minutes, it will take to ...
Friday, June 13, 2014 at 9:25am

College Algebra
A quadratic function has its vertex at the point (-9,8). The function passes through the point (9,4). When written in vertex form, the function is f(x)= a(x-h)^2 +k, where a) h)-9 k)8 4=a(9)^2+8 4=a(9+9)^2+8 4=a(18)^2+8 4=a(332) a=0.01204 I was able to find both h & k. but the...
Thursday, June 12, 2014 at 9:16pm

College Algebra
The graph of a quadratic function f(x) is shown above. It has a vertex at (-2,4) and passes the point (0,2). Find the quadratic function y=a(x-(-2))^2+4 y=a(x+2)+4 2=a(x+2)+4 -4 -4 -2=a(0+2)/2 -1+ a function -1(x+2)+4 ? Im not sure where Im going wrong but my answer was ...
Thursday, June 12, 2014 at 9:13pm

Algebra
The vertex of a graph is (2,-2) is it a minimum, yes or no?
Thursday, June 12, 2014 at 6:53pm

Algebra
There are three pipes in which a cistern can be filled. The second takes 5 hours longer than the first, the third three times as long as the first. If all are open the cistern can be filled in 2 and 1/4 hours. How long would it take each alone to fill the cistern?
Thursday, June 12, 2014 at 6:29pm

Algebra
A rectangular Persian carpet has a perimeter of 212 inches. The length of the carpet is 24 inches more than the width. What are the dimensions of the carpet?
Thursday, June 12, 2014 at 4:20pm

Intro to algebra
The ratio of the distances a pitching wedge and an 8-iron will drive a golf ball is 4 to 5. If a golfer averages 140 yards with a pitching wedge, how far should she average with an 8-iron?
Thursday, June 12, 2014 at 3:45pm

Algebra
Helen invested $14,000 in an account that pays 3% simple interest. How much additional money must be invested in an account that pays 6% simple interest so that the average return on the two investments amounts to 4% ?
Thursday, June 12, 2014 at 3:42pm

Algebra
Shelly made 5 more sales calls than Clark . Shelly and Clark made a total of 33 sales calls. How many sales calls did each make .
Thursday, June 12, 2014 at 10:00am

algebra
The following equation is used to find c, the total cost for printing a quantity of high school yearbooks, b. c=5b+200
Thursday, June 12, 2014 at 8:09am

algebra
The ratio of the lengths of strings that play the notes D and B (on a guitar), is 27 to 16. If a string 64 cm long plays B, what is the length of the string that plays a D?
Thursday, June 12, 2014 at 7:20am

Intro to Algebra
The cost for paint to cover the exterior of the four sides of a shed was $40. A can of paint costs $10 and will cover 33 square feet. The shed consists of four sides, each shaped like a trapezoid. They each have one base of 5 feet and one base of 6 feet. What is the altitude ...
Thursday, June 12, 2014 at 7:11am

ALgebra
A theatre production company donated free tickets for their show to the local Boys & Girls club. They claimed that the ticket value was $306. A child's ticket cost $5.25 and an adult ticket cost $9.75. If there were three times as many children's tickets as adult ...
Thursday, June 12, 2014 at 7:03am

Algebra
Scott set up a volleyball net in his backyard. one of the poles, which forms a right angle with the ground, is 6 feet high. To secure the pole, he attached a rope from the top of the pole to a stake 8 feet from the bottom of the pole. To the nearest tenth of a foot, find the ...
Wednesday, June 11, 2014 at 11:30pm

algebra
i am three digit number below 100 sum of my digit is 14 and the diff is 4 who am i
Wednesday, June 11, 2014 at 11:15pm

Algebra
The cost for paint to cover the exterior of the four sides of a shed was $40. A can of paint costs $10 and will cover 33 square feet. the shed has 4 sides, each shaped like a trapezoid. they each have one base of 5 feet and one base of 6 feet. what is the altitude of each ...
Wednesday, June 11, 2014 at 10:32pm

Algebra
The ratio of the lengths of strings that play the guitar notes D and B is 27 to 16. If a string 64 cm long plays a B, what is the length of the string that plays a D?
Wednesday, June 11, 2014 at 10:14pm

Introductory Algebra
Traveling in France, Miguel exchanged 12 U.S. dollars for francs and got the same exchange rate. How many francs did Miguel receive? Round to the nearest tenth.
Wednesday, June 11, 2014 at 9:59pm

algebra
A pound of tin is worth $2 more than a pound of copper. Three pounds of tin are mixed with 7 pounds of copper to make bronze that sells for $3.85 per pound. How much is a pound of tin worth
Wednesday, June 11, 2014 at 9:16pm

Algebra
Hello! This is a question from my math practice worksheet, and I have no clue how to solve it. Any and all help is greatly appreciated! The table shows a hospital’s patient count for two successive days. Write a linear function using the data (with x representing the day ...
Wednesday, June 11, 2014 at 8:03pm

Algebra/I hope this is the last time.
Find three ordered pairs that satisfy the equation. y=x+4 x,y= (0, answer 0,4 x,y= (1, answer 1,5 x,y= (2, answer 2,1 Thank you everyone very much.
Wednesday, June 11, 2014 at 5:02pm

Algebra
If f(x) = x2 + 3, find the following. f(-2) 9 f(3/2)== not sure f(b) not sure Thank you
Wednesday, June 11, 2014 at 4:08pm

Algebra
What are the excluded values of the function? y=5/(6x-72) a) x=0 b) x=12 c) x=72 d) x=11 I think its b
Wednesday, June 11, 2014 at 3:17pm

algebra
The average selling price of a cup of coffee is $1.35 and the average variable expense per cup is $0.41. The average fixed expense per month is $1,600. How many cups of coffee would have to be sold to attain target profits of $3,700 per month?
Wednesday, June 11, 2014 at 12:38pm

algebra/Steve or Damon help
find the following if x =x^2+2 f(3/2) 4.24 f(b) 0 did I do this right Thank you
Wednesday, June 11, 2014 at 12:15am

algebra.having problems
Draw a stem-and-leaf plot for the data set. (Enter numbers from smallest to largest separated by spaces. Enter NONE for stems with no values.) Data set A: The annual wages of employees at a small accounting firm are given in thousands of dollars. 50 15 18 60 36 21 22 22 34 24...
Wednesday, June 11, 2014 at 12:06am

algebra/what am I doing wrong Please help
Solve the system by graphing. (If the system is inconsistent, enter INCONSISTENT. If the system is dependent, enter DEPENDENT.) 3x+2y=5 4x-3y=1 I have try dependent and inconsistent and either work. What am I doing wrong. Thank you
Wednesday, June 11, 2014 at 12:03am

Algebra
If Buster Posey gets on base 45% of the time, what's the probability he will get on 5 out of 7 times at bat?
Tuesday, June 10, 2014 at 10:46pm

algebra
evaluate the polynomial x=4 x3-5x2+x
Tuesday, June 10, 2014 at 8:59pm

My Final Algebra 1 Question
Will someone evaluate my answers and guide me through answering the last two parts of the problem? Thank you. 5. Principal Farley has $200 to pay for some teachers to attend a technology conference. The company hosting the conference is allowing 2 teachers to attend for free. ...
Tuesday, June 10, 2014 at 4:39pm

Algebra 1--Please, help me!
What are 2 values of b that will make 2x^2 - bx - 20 factorable? Explain your answer. A: ?
Tuesday, June 10, 2014 at 3:19pm

Algebra 1--Please, help me!
1. Mr. Lui wrote 15 - 5x/x^2 - 9x + 18. a. Explain what kind of expression it is. b. Simplify the expression. Show your work. c. Identify any excluded values. A: a. It is a rational expression. b. 5/x - 6 c. Excluded value: x = 6 2. Lynne can paint a wall in 40 minutes. Jeff ...
Tuesday, June 10, 2014 at 2:23pm

algebra/ please ck my answers
Draw a stem-and-leaf plot for the data set. (Enter numbers from smallest to largest separated by spaces. Enter NONE for stems with no values.) Data set A: The annual wages of employees at a small accounting firm are given in thousands of dollars. 50 15 18 60 36 21 22 22 34 24 ...
Tuesday, June 10, 2014 at 2:20pm

algebra/can you ck my answers
find the following if x =x^2+2 f(3/2) 4.24 f(b) 0 Thank you
Tuesday, June 10, 2014 at 2:02pm

Algebra II
Am i correct? A plane intersects only one nappe of a double-napped cone. It is neither perpendicular to the cone's axis nor parallel to its generating line. Which conic section is formed? point circle ellipse <--- parabola
Tuesday, June 10, 2014 at 1:01pm

Algebra 1
5. Principal Farley has $200 to pay for some teachers to attend a technology conference. The company hosting the conference is allowing 2 teachers to attend for free. The number of teachers y that can be sent to the conference is given by the function y = 200/x + 2, where x is...
Tuesday, June 10, 2014 at 12:57pm

Algebra 1--Please, help me!
4. The sum of the digits of a two-digit number is 11. If 45 is added to the number, the digits will be reversed. a. Write a system of equations that you can use to find the digits of the number. Tell what each variable represents. b. Solve the system of equations to find the ...
Tuesday, June 10, 2014 at 12:57pm

Algebra 1
1. Mr. Lui wrote 15 - 5x/x^2 - 9x + 18. a. Explain what kind of expression it is. b. Simplify the expression. Show your work. c. Identify any excluded values. A: a. It is a rational expression. b. 5/x - 6 c. Excluded value: x = 6 2. Lynne can paint a wall in 40 minutes. Jeff ...
Tuesday, June 10, 2014 at 12:51pm

algebra
Evaluate the polynomial when x =4 Evaluate the polynomial when x = 4: x3 - 5x2 + x
Tuesday, June 10, 2014 at 11:05am

Algebra 1
I tried to graph y = x^2 - 4x + 4 and ended up with an x-intercept of -2 (the y-intercept is 4). However, according to wolfram, the x-intercept should be 2. Who is correct: me or the website?
Tuesday, June 10, 2014 at 10:45am

Algebra 1
1. What is the excluded value for the rational expression x^2 - 4/3x - 6? A: ? 2. The trinomial x ^2 - 6x + c is a perfect-square trinomial. What is the value of c? A: 9 3. Find the positive solution of the equation x^2 + 5x - 4 = 0. Round your answer to the nearest tenth. A...
Tuesday, June 10, 2014 at 10:41am

algebra 2
Miguel wants to buy a new stereo that costs $320. He has $40 in March, $80 in April, and $120 in May. If this pattern continues, in what month will he be able to buy the stereo?
Tuesday, June 10, 2014 at 10:35am

Algebra 1-- Please, check my answers!
1. What is ((-12x^6 + x)) / ((-4x^2))? A: 3x^4 - 1/4x 2. What is the greatest common factor of the terms of the polynomial 6x^3 - 18x^2 + 12x + 3? A: 3? 3. Which is a solution to n/n+2 = -8/n? a. -4 b. -2 c. 2 d. 4 A: a? 4. Which of the following is equivalent to ((2x^5y^2)/(...
Tuesday, June 10, 2014 at 9:16am

Algebra 1
How can I determine a equation from a graph? How can I determine how to graph y = x^2 + x - 2? Or y = x^2 - 4x + 4? Am I supposed to use the slope method (rise and run)?
Tuesday, June 10, 2014 at 8:42am

algebra
the one to one function g and h g={(-4,5),(2,-5),(3,2),(4,9) h(x)= 2x+9 find the following g^-1(2)= h^1(x)= (h*h^1)(-7)
Tuesday, June 10, 2014 at 12:35am

algebra
one to one functions g and h are defined as g={(-4,5), (2,-5),(3,2, (4,0)} h(x)= 2x+9 find the following g^-1 (2) h^-1 x) (h*h^1)(-7)
Monday, June 9, 2014 at 11:21pm

algebra/how can I solve this/Thank You
Draw a stem-and-leaf plot for the data set. (Enter numbers from smallest to largest separated by spaces. Enter NONE for stems with no values.) Data set A: The annual wages of employees at a small accounting firm are given in thousands of dollars. 50 15 18 60 36 21 22 22 34 24 ...
Monday, June 9, 2014 at 11:19pm

Algebra 1--Please, help me!
1. What are the x- and y-intercepts of the line described by 6x - 2y = 4? a. x-intercept: 2/3; y-intercept: 2 b. x-intercept: -2/3; y-intercept: 2 c. x-intercept: 2/3; y-intercept: -2 d. x-intercept: -2; y-intercept: 2/3 My answer: ? 2. Which expression is equivalent to 3m^2n/...
Monday, June 9, 2014 at 11:00pm

Algebra
T={(-7,5),(9,-4),(9,3),(0,-7)} give the domain and range of T
Monday, June 9, 2014 at 9:52pm

Algebra 1--Please, check my answer!
1. A city map is laid out on a coordinate plane. Elm Street is described by the line x + 2y = -6. Oak street intersects Elm Street at an right angle. Which of the following could be the equation for Oak Street? a. 2x + y = 5 b. -2x + y = 3 c. x + 2y = 4 d. -x - 2y = 8 My ...
Monday, June 9, 2014 at 9:38pm

algebra/can you show me how to solve problem
if f(x)=x^2+2, find the following, f(-3), f(3/2), f(b) Thank you
Monday, June 9, 2014 at 9:31pm

Algebra 1--Please, help me!
A city map is laid out on a coordinate plane. Elm Street is described by the line x + 2y = -6. Oak street intersects Elm Street at an right angle. Which of the following could be the equation for Oak Street? a. 2x + y = 5 b. -2x + y = 3 c. x + 2y = 4 d. -x - 2y = 8 My answer: d?
Monday, June 9, 2014 at 9:25pm

Algebra 1--Please, check my answer!
At how many points does the graph of y = (x-6)^2 intersect the x-axis? A: Two.
Monday, June 9, 2014 at 8:00pm

Algebra II
The measure of the largest angle of a triangle is 90 more than the measure of the smallest angle, and the measure of the remaining angle is 30 more than the measure of the smallest angle. Find the measure of each angle. Show your work in obtaining your answer.
Monday, June 9, 2014 at 7:35pm

Algebra
Suppose you want to determine the number of miles you can drive in your car. Your car gets 20 miles per gallon. The number of miles traveled varies directly with the number of gallons of gas the tank holds. Write a direct variation equation that represents this situation... I...
Monday, June 9, 2014 at 6:39pm

Algebra
Suppose you want to determine the number of miles you can drive in your car. Your car gets 20 miles per gallon. The number of miles traveled varies directly with the number of gallons of gas the tank holds. Write a direct variation equation that represents this situation... I...
Monday, June 9, 2014 at 5:35pm

algebra
Quadratic equation whose roots are 5 and -5 with coefficient 3 using the letter x to represent the variable please show steps
Monday, June 9, 2014 at 4:47pm

Algebra
Quadratic equation whose roots are 5 and -5 with coefficient 3 using the letter x to represent the variable
Monday, June 9, 2014 at 4:36pm

Algebra
quadratic equation who roots are -3 and -4 whose leading coefficient is 2 use the letter x to represent the variable
Monday, June 9, 2014 at 4:13pm

Algebra
Suppose a cost-benefit model is given by y=2771x/100-x, where y is the cost for removing x percent of a given pollutant. What percent of pollutant can be removed for $36,000? Round your answer to the nearest tenth of a percent?
Monday, June 9, 2014 at 12:43pm

Algebra
Find the coordinates of the midpoint of the hypotenuse of the right triangle whose vertices are A (1,1) B (5,2) C (4,6) and show that it is equidistant of each of the vertices..... And can you please tell me how to prove it in drawing....
Monday, June 9, 2014 at 8:27am

Algebra
evaluate the two compositions (f*g)(x) (h*g)(x) using the functions F(x)=2x+5 g(x)= x^2-3 h(x)= 7-x/3
Monday, June 9, 2014 at 8:04am

Algebra
The Parker’s are installing a wooden fence in their backyard. They have 330 feet of wood. The length can be no more than 90 feet. Write and solve an inequality to find the maximum width of the fence.
Monday, June 9, 2014 at 2:28am

Algebra
Define the functions f(x)=2x+5 g(x)=x^2-3 h(x)=7-x/3 compute (f-h)(4)
Monday, June 9, 2014 at 2:03am

Math
I'm an on-going 8th grader, and I'm taking a class for Algebra 2. What should I expect that is different from Algebra 1? P.S. I've taken Geometry online.
Sunday, June 8, 2014 at 11:13pm

Pre algebra
25ft piece wire cut into 2 pieces one piece is 19ft shorter than the other piece how long was each piece
Sunday, June 8, 2014 at 9:14pm

algebra
the revenues per share of stock y (in dollars) for california pizza kitchen for the years 2000 through 2009 are given by the ordered pairs. (2000, 7.86) (2001, 9.02) (2002, 10.92) (2003, 12.66)(2004,14.64) (2005,16.26)(2006,19.16)(2007,22.32)(200​8,28.37)(2009,27.47)
Sunday, June 8, 2014 at 8:52pm

algebra
4x^3-6.68E-7x^2+1.67E-8x-1.04E-10 = 0
Sunday, June 8, 2014 at 8:47pm

algebra
Which of the following is the best estimate of the correlation coefficient for the data shown below? (1, 18), (2, 12), (3, 20), (4, 16), (5, 22), (6, 30), (7, 28), (8, 40), (9, 34), (10, 29), (11, 33), (12, 39), (13, 44), (14, 39), (15, 28)
Sunday, June 8, 2014 at 5:15pm

Algebra/could show me how to work this problem
Tell what the output value is for the function machine for the given values. x^2+x^2+1 a)5 b)9 c)-7 d)1/2 e)t
Sunday, June 8, 2014 at 3:48pm

Algebra confused/Thank you
Solve the system by graphing. (If the system is inconsistent, enter INCONSISTENT. If the system is dependent, enter DEPENDENT.) 3x + 2y = 5 4x − 3y = 1
Saturday, June 7, 2014 at 11:01pm

Algebra/not sure what to do
If f(x) = x − 8, find the following. How do I find f(p) Thank you
Saturday, June 7, 2014 at 10:44pm

Intermediate Algebra
Find the volume of the air mattress if h = 60 inches and w = 26 inches. The mattress is 2 inches thick.
Saturday, June 7, 2014 at 8:52pm

Algebra/Can someone show how it is done
Tell what the output value is for the function machine for the given values. x down to x_____x^2 + _____X^2 +1 down to x^2 +1 It looks like a machine. A)5 B)9 C)-7 D)1/2 E)t Can you show how it is to be done
Saturday, June 7, 2014 at 1:30pm

algebra
solve for the indicated letter. y=5x, solve for x d=55t, solve for t
Saturday, June 7, 2014 at 9:41am

Algebra
Is the following set a function? {(3, 4), (1, 2), (4, 9), (6, 15)} Thank you
Saturday, June 7, 2014 at 12:01am

Algebra ll
Help please The center of a circle is at (-5 , 1) and it has a radius of 9. What is the equation of the circle? A.(x-5)^2+(y+1)^2= 81 B.(x-5)^2+(y+1)^2= 3 C.(x+5)^2+(y-1)^2= 81 D.(x+5)^2+(y-1)^2= 3
Friday, June 6, 2014 at 5:49pm

Algebra. Can someone direct me
The monthly cost for health care for an employee and two dependents in a certain year is given in the following table. Provider Cost Cost Maxicare $415.20 Kaiser $433.66 cigna $ 424.91 Aetna 436.36 Health net $427.42 B/S $442.16 Pacific care $428.44 Omni 457.94 Redwood Plan $...
Friday, June 6, 2014 at 1:43pm

algebra
Simplify the expression. -x(6x - 7)
Friday, June 6, 2014 at 12:49pm

algebra
Can someone explain how to do this???? Write each expression using a single exponent. x^9/x^2 Answers: x^11 x^7 7 x^5
Friday, June 6, 2014 at 10:55am

algebra
Find the product. -3m (m + 8)
Friday, June 6, 2014 at 10:20am

Algebra
If Tom Bombadil's house is 12 miles east of Hobbiton and 16 miles south, what is the straight line distance (omit units) Where do I start ?
Friday, June 6, 2014 at 7:48am

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