Sunday

January 25, 2015

January 25, 2015

**Recent Homework Questions About Algebra**

Post a New Question | Current Questions

**Algebra math1**

Find the formula 42 reversed is 24 2+4 = 6. The difference between 42 & 24 is 18, 2 + 4 = 6. 18 x 2 = 36, 36 + 6 = 42, 18 + 6 = 24. I need to find a formula that would've found the answers 6 & 18 before I knew they were the answer, but could also work for other numbers ...
*Sunday, January 25, 2015 at 3:36am*

**Algebra Ques23**

The PTO is building a playground. They are putting equipment on 3/5 of the land. 1/2 of the equipment is swings. What fraction of the playground equipment on the land are swings?
*Sunday, January 25, 2015 at 3:36am*

**algebra**

Express your answers as simplifier, improper fraction if necessary [3(a+3)]=29 the solution set is { }
*Sunday, January 25, 2015 at 1:21am*

**College Algebra and Trigonometry**

if x = ucos(pi/4) - vsin(pi/4) and y = usin(pi/4) + vcos(pi/4), find A, B and C so that, 5x^2 - 6xy + 5y^2 = Au^2 + Buv + Cv^2. Thanks, I really dont know what to do, I've already used almost 20 sheets of paper. Please help me. Thanks.
*Sunday, January 25, 2015 at 1:03am*

**Algebra**

Identify the solutions of equations if any x+2y=7 6x-2y=7
*Saturday, January 24, 2015 at 9:11pm*

**Algebra Rearrangement**

Please rearrange h=rx^2-tx to make x the subject.
*Saturday, January 24, 2015 at 5:04pm*

**Algebra tricky ques**

if w is one of the complex cube roots of unity, show that 1+w equals 1. w is raised to power 2
*Saturday, January 24, 2015 at 1:34pm*

**Algebra**

To prove: (1 + 2 + 4 + . . . + 2n) + 1 = 2n+1 , ?n = 0 by induction
*Saturday, January 24, 2015 at 1:33pm*

**Algebra**

Let n! = 1 x 2 x 3 x 4 x ... x n for integer n >_1. What could be the value of 1! +(2 x 2!) + (3 x 3!) + (4 x 4!) + ... (10 x 10!)?
*Saturday, January 24, 2015 at 1:33pm*

**algebra**

The line l_1 passes through the points (3,-3) and (-5,2). The line is the graph of the equation Ax + By = C, where A, B, and C are integers with greatest common divisor 1, and A is positive. Find A + B+ C.
*Saturday, January 24, 2015 at 11:58am*

**linear algebra**

If A is an n × n matrix, then A = S + K, where S is symmetric and K is skew symmetric. Let A= [1 3 -2;4 2 2;5 1 2] Find the matrices S and K described above can some0ne explain how to get these two matricies? thanks
*Saturday, January 24, 2015 at 8:56am*

**algebra**

Factor completely. If a polynomial is prime, state this x^2 -2/5x + 1/25 I am having trouble getting how this is done!
*Friday, January 23, 2015 at 11:41pm*

**College Algebra**

Let f(x) = (2/4^x + 2) for real numbers x. Evaluate f(1/2001) + f(2/2001) + ... + f(2000/2001).
*Friday, January 23, 2015 at 11:12pm*

**algebra**

Harolds mother, who lives across the street, is pouring a concrete driveway, 18 feet wide and 9 inches thick, from the street straight to her house. This is to much work for Harold to do in one day, so his mother has agreed to buy 4 cubic's yards of concrete each saturday ...
*Friday, January 23, 2015 at 8:37pm*

**algebra**

Harolds mother, who lives across the street, is pouring a concrete driveway, 18 feet wide and 9 inches thick, from the street straight to her house. This is to much work for Harold to do in one day, so his mother has agreed to buy 4 cubic's yards of concrete each saturday ...
*Friday, January 23, 2015 at 8:26pm*

**algebra**

bill blends 5/4 pound of peanuts that sell for $2.50 per pound with 3/4 pound of walnuts that sell for $5.50 per pound. What should be their price per pound of the mixed nuts? Round your answer to the decimal places
*Friday, January 23, 2015 at 8:08pm*

**algebra**

solve the equation. Round answer to three decimal places 1 - 5 (x-5)=6x+ 1 7 6 26 25 12
*Friday, January 23, 2015 at 7:43pm*

**algebra**

if the simple interest of $38,000 in three years is $5700 what is the rate?
*Friday, January 23, 2015 at 7:34pm*

**Algebra 1**

Seiji and Gavin both worked hard over the summer. Together, they earned a total of $425. Gavin earned $25 more than Seiji. Hoe much did each of them earn? A. Write a system of two equations to model this program. I got 1 equation down, i just cant figure out the second
*Friday, January 23, 2015 at 6:53pm*

**college algebra **

the distance d in feet that an object travels after t seconds is the modeled by the formula d=16t^2, if you drive from a height of 128 feet how long will it take to hit the water?
*Friday, January 23, 2015 at 6:20pm*

**college algebra**

If the length of molding to create the frame is 84 inches. If the frame surrounding the picture is 3.5 inches wude and the length is 4 inches longer than the width?
*Friday, January 23, 2015 at 6:17pm*

**algebra**

Is this correct with addition and simplified. (5x^2-7x+23)+2x^2+9x-72)=7x^2-7x+9x+23-72=7x^2+2x+49
*Friday, January 23, 2015 at 5:37pm*

**College Algebra**

Suppose that $6,400 is invested at 0.5% interest, compounded monthly. How much, to the nearest penny, is in the account after 7 years?
*Friday, January 23, 2015 at 3:11pm*

**algebra 2**

In a bag of marbles you have 6 green, 4 yellow, 8 blue, and 2 red marbles. What is the probability of picking a blue marble from the bag?
*Friday, January 23, 2015 at 11:36am*

**algebra**

let f(x)=-5x-4 and g(x)=6x-7. find f(x)+g(x)
*Friday, January 23, 2015 at 11:12am*

**Algebra**

Factor 3x^3 + 9x^2 - 3x - 9 3x^3 + 9x^2 - 3x - 9 3 (x^3 + 3x^2- x - 3) 3 ( x+3x^2) ( -x - 3) 3 {x( 1 + 3x) -1 (x -1) This is a far I have gotten. Can someone please help me through the rest of the answer? Thank You
*Friday, January 23, 2015 at 10:15am*

**algebra**

the sum of n terms of the series 1²/1 + (1²+2²)/2 + (1²+2²+3²)/3.....is A) (n/36)(4n²+15n+17) B)(n/6)(n+1)(n-1) c) (n²+3n+20) D) none
*Friday, January 23, 2015 at 9:01am*

**algebra**

the sum of n terms of the series 1, (1+2), (1+2+3)............is A) (n/3)(n+1)(n-1) B)(n/6)(n+1)(n-1) c) (n²+3n+20) D) none
*Friday, January 23, 2015 at 8:57am*

**algebra**

the sum of n terms of the series 4+6+9+13...........is A) (n/6)(n²+3n+20) B)(n/6)(n²-3n-20) c) (n²+3n+20) D) none
*Friday, January 23, 2015 at 8:55am*

**algebra**

lenny anf george started with 2 rabbits and each month the number of rabbits doubled since each pair of rabbits produced another pair of rabbits. what is an eqaution for this situation ? Lenny and george now have 30 million rabbits. how many month have passed ?
*Friday, January 23, 2015 at 2:44am*

**Algebra**

5. A piece of rope is cut into two pieces. One piece is used to form a circle and the other is used to form a square. Use a length of rope of 20 feet to write a function f representing the area of the circle as a function of the length of one side s of the square.
*Friday, January 23, 2015 at 2:34am*

**help math algebra **

How do you solve the following problems? I get confused, can anyone help? Thanks. (7a^5-a^3)-(a^5-5a^3-1) (5x-3)(x^3-5x+2) (4w+5z)^2
*Thursday, January 22, 2015 at 6:05pm*

**algebra**

A poll was taken of 100 students at a commuter campus to find out how they got to campus. The results were as follows: 34 said they drove alone. 33 rode in a carpool. 29 rode public transportation. 6 used both carpools and public transportation. 10 used both a carpool and ...
*Thursday, January 22, 2015 at 4:55pm*

**algebra**

Let X be a number. Translate the English phrase or sentence into a mathematical expression. Then evaluate the expression for X =8. The expression is ?
*Thursday, January 22, 2015 at 2:28pm*

**Algebra 1**

Does the table represent an expoential function? x 1 2 3 4 y -1 -8 -27 -64 yes or no my answer is no
*Thursday, January 22, 2015 at 2:08pm*

**Algebra**

Your class hopes to collect at least 325 cans of food for the annual food drive. There were 135 cans donated the first week and 89 more the second week. a. Write an equality that describes the situation. Let c represent the number of cans of food that must be collected by the ...
*Thursday, January 22, 2015 at 1:46pm*

**algebra **

It is a five digit whole number 1. It is a palindrome 2. It's hundreds digit is a multiple of 5 3. The product of its one digit and 8 is 12 greater than the square of its ones digit 4. The product of its thousands digit and 18 is 45 greater than the square of it's ...
*Thursday, January 22, 2015 at 11:09am*

**algebra**

4000.00 bond with a yearly interest rate of 4% the total interest was $800.00 what was the length of the investment
*Thursday, January 22, 2015 at 6:33am*

**Collega Algebra **

Let f(x) = (2/4^x + 2) for real numbers x. Evaluate f(1/2001) + f(2/2001) + ... + f(2000/2001).
*Thursday, January 22, 2015 at 4:20am*

**College Algebra**

Eliminate t from the two equations x = vtcos(theta) ; y = vtsin(theta)-(gt^2/2) ; and obtain a relationship between x and y (assume that v; g and are constants).
*Thursday, January 22, 2015 at 4:12am*

**algebra **

How do I graph a direct variation when x=10, 20, 30, 40, and y = 4.5, 9.00, 13.50,18.00 Put x on graph going up by 10 and put y on graph at the bottom going across I am unsure of rest
*Wednesday, January 21, 2015 at 7:21pm*

**Algebra 2**

I really need help understanding ho to solve combination functions here is a specific problem I am struggling with. Let f(x) = x - 2 and g(x) = x^2 - 7x - 9. Find f(g(-1)).
*Wednesday, January 21, 2015 at 7:06pm*

**algebra**

write the equation of the line that is parallel ot the line x + Y =-2 and passed through the origin.
*Wednesday, January 21, 2015 at 6:57pm*

**Algebra**

Use algebra tiles to determine if 2(x +3) is equivalent to 2x +3. Explain your answer thanks
*Wednesday, January 21, 2015 at 5:35pm*

**Algebra please help**

Lisa evaluated the expressions 2x and x squared for x=2 and found that both expressions were equal to 4. Lisa concluded that 2x and x squared are equivalent expressions. How could you show. Lisa that she is incorrect? Please help explain thanks
*Wednesday, January 21, 2015 at 5:33pm*

**algebra **

the width of a poster board is 30 inches. using scissors you reduce the width of the poster board to 10 inches what is the scale factor of the dilation? a. 1/3 b. 1/10 c. 3 d.10
*Wednesday, January 21, 2015 at 5:26pm*

**algebra 2**

4/3x^2 (6x^2+9x-12)
*Wednesday, January 21, 2015 at 4:17pm*

**algebra**

The number of roses Mr. Adams ordered for his store was three times as many as the number of daisies ordered he awarded a total of 56 flowers how many roses do Mr. Adams order
*Wednesday, January 21, 2015 at 4:09pm*

**algebra 2**

(w + 2t)(w^2 - 2wt + 4t^2) (x + y)(x^2 -3xy + 2y^2) =x^3 - 3x^2y + 2xy^2 + x^2y -3xy^2 + 2y^3 = x^3-2x^2y-xy^2+2y^3
*Wednesday, January 21, 2015 at 3:54pm*

**Algebra 1**

What is the correct simplification of 5.4x 10^12/ 1.2x 10^3 written in scientific notation?
*Wednesday, January 21, 2015 at 3:35pm*

**Algebra 1**

A fraction reduces to 36. If it's denominator is 6x^5,what is it's numerator?
*Wednesday, January 21, 2015 at 2:32pm*

**algebra**

Multiply using the rule for the square of a binomial. (7x + 4)^2
*Wednesday, January 21, 2015 at 7:39am*

**algebra**

Subtract the polynomials (6v^2 + 7vd - 3d^2) - (9v^2 - 5vd + 19d^2)
*Wednesday, January 21, 2015 at 5:20am*

**algebra**

Add (5x^2-7x + 23) + (2x^2 + 9x - 72) =
*Wednesday, January 21, 2015 at 4:25am*

**Algebra II **

If f(x)= x+2, g(x)=-4x+3, and h(x)=x^2-zx+1 find each value. 1. (f x g x h)(3) 2. (h divided by (f times g)(-6) 3.[ g o (h o f)](-4)
*Tuesday, January 20, 2015 at 11:42pm*

**Algebra**

pecans priced at $5.85 per pound are mixed with almonds priced at $4.93 per pound to make a 40 pound mixture that will sell for $5.62 per pound. How many pounds of pecans and how many pounds of almonds must be used for this mixture?
*Tuesday, January 20, 2015 at 11:39pm*

**Algebra**

25-2[8-2x3]-4
*Tuesday, January 20, 2015 at 8:59pm*

**Algebra**

how to find th equation that passes though (1,3) and (8,5) is there a formula to find the answer>
*Tuesday, January 20, 2015 at 8:03pm*

**Algebra**

Solve this system of linear equations. * Used the substitution method 3x - y = 8 4x - y = -15 ----------------------------------------- WORK y = 3x - 8 4x - (3x - 8 ) = -15 4x - 3x + 8 = -15 x + 8 = -15 x = -7 3x - y = 8 3(-7) - y = 8 -21 - y = 8 -y = 29 y = -29 The ...
*Tuesday, January 20, 2015 at 7:23pm*

**Algebra**

which equation represents the line that passes the point (1,5) and has a slope of negative 2? a) y=2x+7 b) y=-2+11 c) y=2x-9 d) y=2x+3
*Tuesday, January 20, 2015 at 7:17pm*

**algebra**

Lisa runs 3 miles on the third day of the month and she repeated her run every 4 days for the rest of the month. What equation describes the sequence of days of that month that lisa ran? Y-4x➕3 4✖,The days of the month ➕3, the days she already ran
*Tuesday, January 20, 2015 at 7:07pm*

**algebra**

(((b+c+a)/(b+c-a))*((1+(b^2+c^2-a^2)/(2*b*c))))
*Tuesday, January 20, 2015 at 3:16pm*

**Coll Algebra**

perimeter of a triangle is 30 cm. two sides of the triangle are twice as long as the shortest side how long is the shortest side
*Tuesday, January 20, 2015 at 11:34am*

**algebra**

Identify the degree of each term of each polynomial. Then find the degree of the polynomial. xy^3 + 7x^3y^2 - 6xy^4 + 2 I am really having trouble with how this process works. I know the degree of the polynomial is 5 but I don't know how to identify the degree of each term...
*Tuesday, January 20, 2015 at 2:45am*

**Algebra**

What is the domain and range of the relation y = 2(x-5)^2 + 8? Express in set notation. --------------------------------------- Domain: x E R Range : y E R --------------------------------------- Thanks!
*Monday, January 19, 2015 at 11:12pm*

**Algebra**

Write the simplified form of the expression. {q^-2/3} {q^1/3} --------------- q^4/3 Using positive exponents. ------------------------------------- Solution: {q^-2/3} {q^1/3} = q^-1/3 = 1 --------------- ------ ---- q^4/3 q^4/3 q^5 Thanks in advance
*Monday, January 19, 2015 at 11:10pm*

**Math, Algebra**

Can someone help me figure this out for my review? Find the equation of the line that passes through (2,-3) and has a slope of (5/2)
*Monday, January 19, 2015 at 10:26pm*

**algebra**

What is the area of the largest rectangle with lower base on the x-axis and upper vertices on the curve y = 27 - x2
*Monday, January 19, 2015 at 7:42pm*

**Algebra**

a rectangular lot whose perimeter is 1600 feet is fenced on three sides. An expensive fencing along the lot's length cost $20 per foot, and an inexpensive fencing along the two side widths costs $5 per foot. The total cost of fencing along the three sides comes to $13000. ...
*Monday, January 19, 2015 at 5:13pm*

**Algebra**

a round trip flight of 1037.5 miles takes 7 1/2 hours. The part of the flight with the wind takes 1 1/2 less than the other part of the trip. Find the speed of the plane in still air and the speed of the wind I have no idea how to do this...a little bit help? A lead?
*Monday, January 19, 2015 at 3:04pm*

**Algebra**

a round trip flight of 1037.5 miles takes 7 1/2 hours. The part of the flight with the wind takes 1 1/2 less than the other part of the trip. Find the speed of the plane in still air and the speed of the wind. I have no idea how to do, can u give me a lead on this? Some help?
*Monday, January 19, 2015 at 2:53pm*

**Algebra **

Identify the degree of each term of each polynomial. Then find the degree of the polynomial. xy^3 + 7x^3y^2 - 6xy^4 + 2 I know the degree of the first term is xy^3 is 4. I cant seem to find the second term
*Monday, January 19, 2015 at 2:18pm*

**Math**

Planner for a festival is trying to decide what to charge for ticket prices. Based on sampling they determine that if they charge $400 for a weekend pass, 40000 people will attend. However it has been pointed out to them that for each $10 reduction in price 4000 more people ...
*Sunday, January 18, 2015 at 10:18pm*

**Math**

An explosion has occurred in Canada. Its blast radius was a regular circle that can be modelled by the equation x2 +y2=100, where x and y are measured in km. The blast destroyed everything within the circle. a) Canada has 4 fire stations located at the following locations (-8,...
*Sunday, January 18, 2015 at 10:12pm*

**Algebra**

let f(x) = x^3 − 2 and g(x) = ^3√ x − 2 I can't figure out if these are inverses for each other, I don't know how to put in f(g(x)) or g(f(x)) and have an answer
*Sunday, January 18, 2015 at 10:09pm*

**algebra**

Montgomery College has a 64-piece band and a 35-piece orchestra. If 14 people are members of both the band and the orchestra, can the band and orchestra travel in two 45-passenger buses?
*Sunday, January 18, 2015 at 5:26pm*

**algebra**

From a survey of 100 college students, a marketing research company found that 70 students owned iPods, 50 owned cars, and 40 owned both cars and iPods. (a) How many students owned either a car or an iPod (but not both)?
*Sunday, January 18, 2015 at 5:22pm*

**algebra**

In a survey of a TriDelt chapter with 50 members, 20 were taking mathematics, 32 were taking English, and 6 were taking both. How many were not taking either of these subjects?
*Sunday, January 18, 2015 at 5:19pm*

**Algebra 1a**

Will someone please help me with the answer to the following: Simplify x^2*x^3*x^4 Thanks!
*Sunday, January 18, 2015 at 4:48pm*

**Algebra 1a**

Will someone please help me with the answer to the following: Simplify: (xy)^-3/(x^-5y)^3
*Sunday, January 18, 2015 at 4:46pm*

**algebra**

a car rents for $45 per day plus 21 cents per mile you are on a daily budget of $66 what milage will call you to stay within your budget
*Sunday, January 18, 2015 at 4:38pm*

**Algebra**

Simplify the radical expression square root 48a squared b to the 7th all beneath the sq rt sign I have no work to show, can't remember the steps to solve
*Sunday, January 18, 2015 at 4:13pm*

**Algebra 1a**

Simplify (xy)^-3/(x^-5y)^3
*Sunday, January 18, 2015 at 2:11pm*

**Mat 116 - Algebra**

Simplify x^2*x^3*x^4
*Sunday, January 18, 2015 at 2:10pm*

**Mat 116 - Algebra**

Simplify (2x)^3 Thanks for the help!
*Sunday, January 18, 2015 at 2:09pm*

**Algebra Help!!**

If 5p = -100 + 3Q^2, which of the following could Q possibly be?
*Sunday, January 18, 2015 at 12:08pm*

**Algebra HELP!!**

Water coming out from a fountain is modeled by the function f(x) = -x^2 + 8x + 2 where f(x) represents the height, in feet, of the water from the fountain at different times x, in seconds. What does the average rate of change of f(x) from x = 1 to x = 4 represent? A. The water...
*Sunday, January 18, 2015 at 10:57am*

**Algebra **

f(x)=x^2+x-12 g(x)=x-3 Solve (f/g)(x) and state the domain
*Sunday, January 18, 2015 at 9:11am*

**algebra**

Sam jumped off a diving board into a pool her height as a function of time is modeled by the function h (t)=-20 to the second power+20t+16 where t is time in seconds h is height in feet how long did it take sam to reach her highest height what is the highest point that she ...
*Sunday, January 18, 2015 at 1:27am*

**Algebra **

Find f o g and g o f, if they exist. State the domain and range f={(-4,-14),(0,-6),(-6,-18),(2,-2)} g={(-6,1),(-18.13),(-14,9),(-2,-3)}
*Saturday, January 17, 2015 at 9:13pm*

**Algebra **

Find f o g and g o f, if they exist. State the domain and range f={(-8,-4),(0,4),(2,6),(-6,-2)} g={(4,-4),(-2,-1),(-4,0)(6,-5)}
*Saturday, January 17, 2015 at 8:46pm*

**algebra**

Ten years from now Tim will be twice as old as Jane was when mary was nine times as old as tim. Eight years ago, Mary was half as old as Jane will be when jane is one year older than Tim will be at the time when Mary will be five times as old as Tim will be two years from now...
*Saturday, January 17, 2015 at 2:54pm*

**Algebra 2**

Find all of the zeros of each function 1. q(x)=2x^3-17x^2+90x-41 2.x^3-5x^2-7x+51 3.x^4-9x^3+24x^2-6x-40 Please show work!!! I want to learn how to do it.
*Saturday, January 17, 2015 at 12:50pm*

**algebra**

the lenght of a rectangular is 50 feet more than the width,it the perimeter of the basketball court is 300 feet,what is the lenght of the field
*Saturday, January 17, 2015 at 10:21am*

**Algebra 1**

Write a scientific notation for .0042 My answer is 4.2 10^-3
*Saturday, January 17, 2015 at 12:17am*

**Algebra 1**

Simplify mn^-4/p^0 q^-2 My answer is mq^2/n^4
*Friday, January 16, 2015 at 9:09pm*

**Algebra 1**

Simplify 5^-1(3^-2) My answer is 1/45
*Friday, January 16, 2015 at 9:02pm*

**algebra**

the picture will be hung on a wall where the distance from the floor to ceiling is 8 feet. The center of the picure must be 5 1/4 feet from the floor. Determine the distance from the ceiling to the top of the picture frame.
*Friday, January 16, 2015 at 2:03pm*

**Algebra 1, need help!**

What is the algebraic expression for the following word phrase: the product of 5 more than x and 6? A. 4(x+6) B. 6(x+4) C. 6+(x+4) D. 6-(x+4) evaluate x/y for x=2/3 and y=6/7 A. 7/9 B. 8/10 C. 9/12 D. 12/21
*Friday, January 16, 2015 at 1:32pm*

**algebra**

What is the excluded value? _A__ b-2
*Friday, January 16, 2015 at 12:44pm*

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