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October 20, 2014

October 20, 2014

**Recent Homework Questions About Algebra**

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**Algebra 2**

Please help me solve and find the excluded values for this problem. Also please show me the work for this problem I want to learn!@!@!. 49X^6+7X^7/28X^8
*Friday, March 28, 2014 at 11:15am*

**algebra**

Solve the following rational inequality. Write the solution in interval notation. Show the number line and breaking points or graph of the polynomial with the part of the graph that is the solution (x-4)(x+2)/(x-3)(x+5) ¡Ü0
*Friday, March 28, 2014 at 10:53am*

**algebra**

write a fourth degree polynomial function with real coefficients that has -3,1/5, and 4+i as zeros and the y intercept of (0,5)
*Friday, March 28, 2014 at 10:39am*

**ALGEBRA**

EVA IS JUMPING ON A TRAMPOLINE .HER HEIGHT H AT TIME T CAN BE MODELED BY THE EQUATION H=-16T^2+20T+6.WOULD EVA REACH A HEIGHT OF 14 FEET
*Friday, March 28, 2014 at 8:06am*

**Algebra word problem**

J's bike has determined that when x hundred bikes are built, the average cost per bike is given by C(x)= 0.1x^2-1.2x+4.993, where C(x) is in hundreds of dollars. how many bikes should the shop build to minimize the average cost per bike?
*Friday, March 28, 2014 at 1:40am*

**Algebra**

Keiko is a software saleswoman. Let represent her total pay (in dollars). Let represent the number of copies of History is Fun she sells. Suppose that and are related by the equation . Answer the questions below. Note that a change can be an increase or a decrease. For an ...
*Thursday, March 27, 2014 at 10:11pm*

**algebra**

6 (31n+5)
*Thursday, March 27, 2014 at 4:52pm*

**algebra**

What is the volume of a cylinder? diameter:2cm hieght:9cm
*Thursday, March 27, 2014 at 4:06pm*

**Algebra 2**

Simplify the rational expression (x^2+xy-2y^2)/(x^2+3xy+2y^2)
*Thursday, March 27, 2014 at 10:57am*

**Algebra**

Simplify the rational expression (x^2+xy-2y^2)/(x^2+3xy+2y^2)
*Thursday, March 27, 2014 at 10:42am*

**Algebra**

I am having issues with factoring. I am trying to check my work using a TI84 Plus calculator but I don't know how to plug in a problem to check its factoring. Can anyone help? for example 44y^3+55y^2-11xy how can I go about plugging that in to check my work?
*Thursday, March 27, 2014 at 8:04am*

**algebra**

Mary has a total of $5000 invested in two accounts. One account pays 5% and the other 8%. Her interest in the first year was $331. Write and solve a system of equations to find out how much she has invested in both accounts
*Wednesday, March 26, 2014 at 10:39pm*

**Algebra**

Keiko is a software saleswoman. Let x represent her total pay (in dollars). Let y represent the number of copies of History is Fun she sells. Suppose that x and y are related by the equation 2200+900x=y. Answer the questions below. Note that a change can be an increase or a ...
*Wednesday, March 26, 2014 at 7:42pm*

**Algebra**

Hi I have a question concerning how to factor on a TI84plus what are the steps to doing that? much help is appreciated thanks!
*Wednesday, March 26, 2014 at 11:03am*

**Algebra**

1) which number(s) is/are a solution of the inequality? There can be more than one correct answer. A) -13 B) 25 C) 10 D) 33 2) which number(s) is/are a solution of the inequality? There can be more than one correct answer. A) 1 B) 2 C) 3 D) 4
*Wednesday, March 26, 2014 at 10:48am*

**Algebra**

1) which number(s) is/are a solution of the inequality? There can be more than one correct answer. A) -13 B) 25 C) 10 D) 33 2) which number(s) is/are a solution of the inequality? There can be more than one correct answer. A) 1 B) 2 C) 3 D) 4
*Wednesday, March 26, 2014 at 4:40am*

**Pre Algebra**

what figure has 3 lateral faces that are rectangales
*Tuesday, March 25, 2014 at 9:17pm*

**Pre Algebra**

can a trapezoiodal prism equal a triangular prism and rectangular prism combined
*Tuesday, March 25, 2014 at 9:15pm*

**ALGEBRA**

DAmon you equaled them to zero that is not rightt An open-topped box can be made from a rectangular sheet of aluminum, an open-topped box can be made from a rectangular sheet of aluminum, with dimensions 40 cm by 25 cm, by cutting equal-sized squares from the four corners and ...
*Tuesday, March 25, 2014 at 8:29pm*

**algebra**

an open-topped box can be made from a rectangular sheet of aluminum, with dimensions 40 cm by 25 cm, by cutting equal-sized squares from the four corners and folding up the sides. Declare your variables and write a function to calculate the volume of a box that can be formed. ...
*Tuesday, March 25, 2014 at 8:19pm*

**Algebra**

The length of a rectangle is 5 meters more than its width. The perimeter is 66 meters. Find the length and the width of the rectangle
*Tuesday, March 25, 2014 at 6:22pm*

**Pre Algebra**

What figure has exactly 4 lateral faces that are triangles?
*Tuesday, March 25, 2014 at 5:04pm*

**algebra**

How do I graph y=1-4x?
*Tuesday, March 25, 2014 at 4:55pm*

**Algebra**

1) which number(s) is/are a solution of the inequality? There can be more than one correct answer. A) -13 B) 25 C) 10 D) 33 2) which number(s) is/are a solution of the inequality? There can be more than one correct answer. A) 1 B) 2 C) 3 D) 4
*Tuesday, March 25, 2014 at 2:41pm*

**Algebra**

Which kind of function best models the set of data points (–3, 18), (–2, 6), (–1, 2), (0, 11), and (1, 27)? • linear • quadratic • exponential • none of the above
*Tuesday, March 25, 2014 at 12:53pm*

**Algebra**

Graph the solution to the inequality on the number line |4u-8|=>12
*Tuesday, March 25, 2014 at 12:31pm*

**Algebra 2**

d(x)= (54x^10)/(24x^8 )please help
*Tuesday, March 25, 2014 at 11:03am*

**algebra 2**

Identify the form of the equation (standard, vertex, intercept), tell if it opens up or down and give the axis of symmetry. y=-4x^2+3x+-6 Walk me through this please?
*Tuesday, March 25, 2014 at 5:23am*

**Algebra**

Which expression gives the solutions of –5 + 2x² = –6x?
*Monday, March 24, 2014 at 7:25pm*

**algebra**

find a polynomial f(x) of degree 4 that has the following zeros: 0,7,-4,5 Leave your answer in factored form
*Monday, March 24, 2014 at 7:02pm*

**Algebra 1 Answer Evaluation **

Factor. 1. 30y^3 - 50y A: 10y(3y - 5y) 2. Factor a^2 - 5a^2 + 2a -10 by grouping. A: ?
*Monday, March 24, 2014 at 6:06pm*

**Algebra**

A box shaped like a rectangular prism has a height of 17 in and a volume of 2,720 in³ The length is 4 inches greater than twice the width. What is the width of the box? • –10 in • 8 in • 20 in • 40 in
*Monday, March 24, 2014 at 5:32pm*

**Algebra 1 Answer Evaluation **

Factor the following polynomial completely. "3c^2 + 12 - 63" My answer: (3x +9)(x - 7)
*Monday, March 24, 2014 at 4:51pm*

**Algebra**

Graph the rational function x/(x-6) To graph the function, draw the horizontal and vertical asymptotes (if any) and plot at least two points on each piece of the graph.
*Monday, March 24, 2014 at 4:12pm*

**Algebra!**

Can someone help me with these problems so i can do the rest of my textbook work on my own plz? What is the value of n so that the expression x^2+11x+n is a perfect square trinomial? (1 point) What is a solution of x^2+6x=-5? (1 point) What is the solution of x^2+14x+112=0? If...
*Monday, March 24, 2014 at 1:56pm*

**Algebra **

What is a quartic function with only the two real zeros given? x = -4 and x = -1 A. y = x^4 + 5x^3 + 5x^2 + 5x + 4 B. y = x^4 - 5x^3 - 5x^2 - 5x - 4 C. y = -x^4 + 5x^3 + 5x^2 + 5x + 4 D. y = x^4 + 5x^3 + 5x^2 + 5x - 5
*Monday, March 24, 2014 at 7:34am*

**Algebra**

How to solve y = -0.04x^2 + 1.3x + 56 using the quadratic formula?
*Sunday, March 23, 2014 at 8:09pm*

**Algebra**

Solve the system of equations y=-2(x^2-1) y=2(x^4-2x^2 +1)
*Sunday, March 23, 2014 at 8:08pm*

**Algebra**

x+y^2=5 2x^2+y^2=6 Solve by elimination.
*Sunday, March 23, 2014 at 7:27pm*

**Algebra**

Hello, This one as well. Thank you! Select the approximate values of x that are solutions to f(x) = 0, where f(x) = -8x^2 + 3x + 9.
*Sunday, March 23, 2014 at 6:07pm*

**Algebra**

Hello, I hope all is well. I am hoping you can help. Select the approximate values of x that are solutions to f(x) = 0, where f(x) = -7x^2 + 6x + 3.
*Sunday, March 23, 2014 at 6:06pm*

**Algebra II**

2c+6d=14 1/2c-3d=8
*Sunday, March 23, 2014 at 1:48pm*

**algebra 2 **

you deposit $3500 in an account that earns 2.5% annual interest. Find the balance after one year if the interest is compounded with the given frequency.
*Sunday, March 23, 2014 at 1:02pm*

**algebra**

Let g(x) be reflection of f(x)=3x+2 in the x - axis. What is a function rule for g (x)?
*Sunday, March 23, 2014 at 11:49am*

**Algebra**

The number of visitors at a Web site over several days is shown in the table at the right. What is an equation that models the data? This is the given data: Days: 1, 2, 3, 4, 5 Visitors: 52, 197, 447, 805, 1270 How do you write the equation?
*Saturday, March 22, 2014 at 4:42pm*

**Algebra**

Please explain how to do this problem. The answer says the answer is 2.43 inches, but I don't get it. A school wants to take out an ad in the paper congratulating a basketball on a successful season. The area of the photo will be half the area of the entire ad. The photo ...
*Friday, March 21, 2014 at 9:45pm*

**Algebra**

Simplify the expression, if possible. State the excluded values, if any. 1. 5x - 5/ 10x^2 - 25x + 15 2. w^2 + 6w + 9/ 2w^2 - 18 Thanks so much.
*Friday, March 21, 2014 at 9:16pm*

**algebra**

The manager of a bulk foods establishment sells a trail mix for $6 per pound and premium cashews for $13 per pound. The manager wishes to make a 315-pound mixture that will sell for $8 per pound. How many pounds of each should be used?
*Friday, March 21, 2014 at 8:02pm*

**algebra**

For what value of x is the rational expression below equal to zero? X-4/(x+5)(x-1)
*Friday, March 21, 2014 at 6:19pm*

**mat116 algebra**

1-5x-4>-3
*Friday, March 21, 2014 at 5:38pm*

**algebra**

Write the equation in quadratic form and solve it by factoring. x2(8x + 65) 63 = x
*Friday, March 21, 2014 at 5:32pm*

**algebra**

The formula for the area of a trapezoid is A = h(B + b) 2 . The area of the trapezoid truss in the illustration is 72 square feet. Find the height of the truss shown below if the shorter base is the same as the height.
*Friday, March 21, 2014 at 5:27pm*

**algebra**

An artist intends to paint a 98-square-foot mural on the large wall show below. Find the dimensions of the mural if the artist leaves a border of uniform width around it.
*Friday, March 21, 2014 at 5:26pm*

**Algebra **

1) There are two pet stores in zacharys town. There are dogs, cats, and hamsters at the first pet store. The second store has dogs, rabbits, and fish. Write a set that represents all of the different pets stores in the town. 4) The cheerleading squad is having a bake sale. ...
*Friday, March 21, 2014 at 2:27pm*

**Algebra**

Find a quadratic equation that has the numbers below as solutions. 1. 1/2,-10 2. 2/3,-5/7 How do I even do these problems? Those solutions are so hard to find.
*Friday, March 21, 2014 at 1:34pm*

**Algebra**

6/z-3=8/5 help please.
*Friday, March 21, 2014 at 1:04pm*

**algebra**

solve by factoring a^2-4ab-8b^2?
*Friday, March 21, 2014 at 8:20am*

**algebra**

Find the sum a+(a+1)+(a+2)+…….(a+n-1) in terms of a and n
*Friday, March 21, 2014 at 2:03am*

**algebra**

y/4=15/20 how do I solve the proportion? please explain it to me. I have several to do
*Thursday, March 20, 2014 at 9:49pm*

**Algebra 1**

Hi! I'm doing my math homework, but I got confused. Can someone please help me how to solve simplest radical forms with an example? With square roots?
*Thursday, March 20, 2014 at 8:45pm*

**algebra**

if 6 notebooks + 2 binders = 23.52 ans 3 notebooks + 4 binders = 25.53 how do I solve to find out what the notebooks and binders each cost?
*Thursday, March 20, 2014 at 8:43pm*

**algebra**

A box of candy contains two types of chocolates. One type is made with nuts, and the other type is nut free. The box contains 3 times more candies with nuts than candies without nuts. Johnny pulls a candy out of the box at random. What is the probability that Johnny pulled out...
*Thursday, March 20, 2014 at 7:42pm*

**algebra 1**

At Jack's Laundromat, 6 of the washers must be replaced. These washers represent of the total number of washers. If w represents the total number of washers, which equation could be used to determine the value of w?
*Thursday, March 20, 2014 at 6:17pm*

**Algebra **

1) There are two pet stores in zacharys town. There are dogs, cats, and hamsters at the first pet store. The second store has dogs, rabbits, and fish. Write a set that represents all of the different pets stores in the town. 4) The cheerleading squad is having a bake sale. ...
*Thursday, March 20, 2014 at 4:12pm*

**Algebra!**

4. A ball is thrown into the air with an initial upward velocity of 60 ft/s. Its height (h) in feet after t seconds is given by the function h = –16t² + 60t + 6. What will the height be at t = 3 seconds? (1 point) 35 feet 40 feet 42 feet 45 feet 5. Solve x² &#...
*Thursday, March 20, 2014 at 3:36pm*

**Physics**

An ice puck of mass m revolves on an icy surface in a circle at speed v at the end of a horizontal string of length L. The tension in the string is T Write the equation for centripetal force, and substitute the values T and L appropriately. Then with a bit of elementary ...
*Thursday, March 20, 2014 at 2:32pm*

**Algebra**

I'm asked to simplify these expressions by using long division. I've attempted these a few times and I'm very confused. Any help you can provide would be very much appreciated. 1. (72 - 8x^2 + 4x^3 - 36x) / (x - 3) 2. (8b^3 - 6) / (2b - 1) Thank you.
*Thursday, March 20, 2014 at 12:49pm*

**Algebra **

Find the equation of the parabola with its vertex at (h,k). Vertex: (-2.1) Focus: (-5,1) I know I put it into (y-k)^2=4(p)(x-h) so (y-1)^2=4(p)(x+2). How do I find the value of p?
*Wednesday, March 19, 2014 at 11:16pm*

**Algebra **

Find the equation of the parabola with its vertex at (h,k). Vertex: (-2.1) Focus: (-5,1) I know I put it into (y-k)^2=4(p)(x-h) so (y-1)^2=4(p)(x+2). How do I find the value of p?
*Wednesday, March 19, 2014 at 11:16pm*

**math algebra**

a square parking lot has a surface area of (w^4-2w^2x+x^2) square feet. Factor this trinomial to find the length of one side in feet.
*Wednesday, March 19, 2014 at 11:15pm*

**algebra**

Michelle has 45 books. Olivia has b fewer books. Which expression represents the total number of books Olivia has?
*Wednesday, March 19, 2014 at 9:58pm*

**Algebra**

If a salesman earned 6% commissions on sales, and in one week he earned $300 in commissions, how much merchandise did he sell that week?
*Wednesday, March 19, 2014 at 8:38pm*

**Math**

how do you use the quadratic formula on a TI-83 calculator? I'm in algebra 1!
*Wednesday, March 19, 2014 at 8:03pm*

**algebra: functions**

Which expression represents the quotient of f and 52?
*Wednesday, March 19, 2014 at 7:42pm*

**algebra**

jim is 13 years older than tom the sum of their age is 75. how old is tom and how old is jim
*Wednesday, March 19, 2014 at 6:54pm*

**Algebra ll**

Help please, I don't understand how to do this... Give an example of an arithmetic sequence that is found in the real world. Find the common difference and write a recursive and iterative rule for the sequence. Use one of the rules to find another term of the sequence. ...
*Wednesday, March 19, 2014 at 5:46pm*

**Math (algebra)**

Could you help me with this math question: A can in the shape of a right circular cylinder is required to have a volume of 500 cubic centimeters. The top and bottom are made of material that costs 11 cents per square centimeter, while the sides are made of a material that ...
*Wednesday, March 19, 2014 at 5:45pm*

**Math (algebra)**

Hi could you please help me with this algebra question. A rectangle has one corner on the graph of y=36-x^2, another at the origin, a 3rd on the positive y-axis, and the fourth on the positive x-axis. Express the area A of the rectangle as a function of x. What is the domain ...
*Wednesday, March 19, 2014 at 5:42pm*

**algebra**

Write the numeral as a Roman numeral. 503,303 A. MMCCCIII B. MMMCCCIII C. MMCCCXIII D. MMCCIII
*Wednesday, March 19, 2014 at 4:23pm*

**Algebra Based Physics **

A 2.50-kg steel ball strikes a massive wall at 10.0 m/s at an angle of θ = 60.0° with the plane of the wall. It bounces off the wall with the same speed and angle (see the figure below). If the ball is in contact with the wall for 0.224 s, what is the average force ...
*Wednesday, March 19, 2014 at 2:28pm*

**College Algebra**

The table lists how poverty level income cutoffs(in dollars) for a family of four have changed over time. Use the midpoint formula to approximate the poverty level cutoff in 1987 to the nearest dollar. the poverty level cutoff in 1987 was _____ dollars. ( round to the nearest ...
*Tuesday, March 18, 2014 at 8:00pm*

**College Algebra**

How to get the answer to a formula if I=ã2P/L relates the coefficient of self-induction, L (in henry's), the energy P stored in an electronic circuit (in joules), and the current I (in amps). Find I if P=120 and L=70. The example I have to go by does not help ...
*Tuesday, March 18, 2014 at 6:55pm*

**Linear Algebra**

(-5.1)^0 a. 1 << b. 0 c. -5.1 d. -1 3g^-2 b^2 a. 3b^2/g^2 b. 3g^2 b^-2 <<< c. 3gb^-4 d. b^2/3g^2 3/g^-2 h^3 a. 3/g^2 h^3 << b. 3g^2/h^3 c. 6g/h^3 d. 3/gh
*Tuesday, March 18, 2014 at 5:04pm*

**Algebra**

Is (x+y)2 equal to (x2+y2)? Explain why or why not using an example to support your answer.
*Tuesday, March 18, 2014 at 4:55pm*

**algebra**

production of two numbers is 19951 and sum of those two numbers is 280 (x+y=280).Without assigned those numbers find difference between them (x-y=?)
*Tuesday, March 18, 2014 at 3:49pm*

**Algebra**

Which of the following is a solution of x² + 14x + 112 = 0? If necessary, round to the nearest hundredth. (1 point) • x = –0.24 • x = –4.24 • 4.24 • no solution
*Tuesday, March 18, 2014 at 3:11pm*

**Algebra**

One more rectangular-shaped piece of metal siding needs to be cut to cover the exterior of a pole barn. The area of the piece is 30 ft². The length is 1 less than 3 times the width. How wide should the metal piece be? Round to the nearest hundredth of a foot (1 point) &#...
*Tuesday, March 18, 2014 at 2:04pm*

**Algebra I**

Solve the linear equation by elimination 10x-9y=46 -2x+3y=10
*Tuesday, March 18, 2014 at 12:42pm*

**Algebra URGENT! Conic sections**

A spacecraft is in a circular orbit 150 kilometers above Earth. Once it attains the velocity needed to escape the Earth's gravity, the spacecraft will follow a parabolic path with the center of Earth as focus. Suppose the spacecraft reaches escape velocity above the North ...
*Tuesday, March 18, 2014 at 6:55am*

**Chemistry**

Determination of Ksp, ΔG°, ΔH° and ΔS° for Ca(OH)2. *** Need help on problem #3 & #4 *** CALCULATIONS: 1. Calculate the average solubility of calcium hydroxide, Ca(OH)2, at each temperature. 2. Calculate the Ksp for Ca(OH)2 at each temperature. 3. ...
*Tuesday, March 18, 2014 at 3:30am*

**Quadratic Functions in Algebra**

Suppose C(x)=x^2−6x+20 represents the costs, in hundreds, to produce x thousand pens. How many pens should be produced to minimize the cost? What is the minimum cost? Number of pens to minimize cost: Minimum Cost:
*Tuesday, March 18, 2014 at 1:56am*

**Algebra: Quadratic Functions**

A model rocket is launched with an initial velocity of 128 ft/s from a height of 70 ft. The height of the rocket, in feet, t seconds after it has been launched is given by the function s(t)=−16t^2+128t+70. Determine the time which the rocket reaches its maximum height ...
*Tuesday, March 18, 2014 at 1:36am*

**algebra**

(-2x)-6
*Monday, March 17, 2014 at 11:04pm*

**Algebra**

Fiona and camila took a load of peaches to the farmers market. During the first hour , they sold 1/2 of the peaches plus 1/2 of a peach. In the second hour, they sold 1/3 of the remaining peaches plus 1/3 of a peach. In the third hour , they so,d 1/4 of what was left and 3/4 ...
*Monday, March 17, 2014 at 10:28pm*

**algebra 1**

Eight times the sum of 11 and a number is 123. Which equation below can be used to find the unknown number?
*Monday, March 17, 2014 at 10:20pm*

**Algebra**

Solve using FOIL (y-2) (3y3-5y+7)
*Monday, March 17, 2014 at 10:17pm*

**algebra 1**

The sum of two consecutive even integers is -34 . What is the smaller integer?
*Monday, March 17, 2014 at 10:00pm*

**algebra**

(4a2+9b5) - (-2a2-6b5)
*Monday, March 17, 2014 at 9:55pm*

**Linear Algebra**

Fnd the left null space of matrix A = [5 -3 1] [-2 4 -6] [11 -8 5]
*Monday, March 17, 2014 at 9:50pm*

**algebra 1**

The sum of three consecutive integers is -204 . What is the largest integer?
*Monday, March 17, 2014 at 9:39pm*

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