# Homework Help: Math: Algebra

## Recent Homework Questions About Algebra

**Algebra 2**

Describe an infinite geometric series with a beginning value of 2 that converges to 10. What are the first 4 terms of the series? Last question and my mind is fried, can someone please help me? Thanks

*Thursday, March 23, 2017 by Fading*

**Algebra 2**

On a cold winter night, Anna makes a cup of hot cocoa. When she takes the first sip, she realizes that the cocoa is too hot to drink. She drops a thermometer into the cup and discovers that the cocoa is 170° F. After 20 minutes, she tries again and the cocoa is still too hot ...

*Thursday, March 23, 2017 by Jordan*

**Algebra**

Translate this sentence into an equation. The sum of 11 and Julie's age is 60 Use the variable j to represent Julie's age.

*Thursday, March 23, 2017 by Amy S*

**Help please I am lost, algebra**

I have notes on this from online but they are different from this problem and I don't know how to solve it. Find the equation of a line with the given information: slope -5/4 and g(14)=-6 It is asking for, point slope form, slope intercept form, Function form, if vertical ...

*Thursday, March 23, 2017 by Sam*

**Algebra 1**

Multiply the binomial and trinomial (x-2)(x^2+2x+4) Can someone please help ? I do not understand what to do. Thank You

*Wednesday, March 22, 2017 by Help please*

**algebra 6th gr**

A triangle & a rect. have the same area. the base of the triangle is 12 ft & the height is 5 ft. If the rect. has a length of 10 ft, what is the rectangle width. This one is confusing, can someone help me please

*Wednesday, March 22, 2017 by Asheli*

**Algebra**

How do I prove this statement? sin^-1(sin Ø) = Ø I can't figure out how I would go about proving it. Any help is appreciated.

*Wednesday, March 22, 2017 by anon358*

**Math - Rate Of Change**

What does it take to win a tug of war? PUNCHLINE • Algebra • Book A 2006 March Mathworks

*Wednesday, March 22, 2017 by Anonymous*

**algebra**

Solve: 4/s = -2/9 The answer is -18 Show work of how to get -18 Thank you!!

*Wednesday, March 22, 2017 by Kyle*

**Algebra**

Use associative property to rewrite the expression z+(a+b)

*Wednesday, March 22, 2017 by Seresa*

**algebra 1**

3. A ball is thrown into the air with an initial upward velocity of 46ft/s. Its height (h) in feet after t seconds is given by the function h = -16t^2 + 46t + 6. After how many seconds will the ball hit the ground? A. 3 B. 4 C. 5 D. 6 I think D, if i'm wrong can one of you guy...

*Wednesday, March 22, 2017 by Ralf miles*

**Algebra 1**

exponents and exponential functions unit test I need help? its Lesson 9: Exponents and Exponential Functions Unit Test CE 2015 Algebra 1 B Unit 2: Exponents and Exponential Functions

*Wednesday, March 22, 2017 by josh s. j*

**Linear algebra**

please help me with this question I have no idea how to solve it, thanks Suppose T is a transformation from ℝ2 to ℝ2. Find the matrix A that induces T if T is rotation by 1/6π.

*Tuesday, March 21, 2017 by shana*

**Algebra**

Four workers are hired to weed a field by hand. Each is given a plot which is 12×7 feet in size. What is the total area of the field? 4(12×7)=x 4×84=x 336=x

*Tuesday, March 21, 2017 by Emily*

**College Algebra**

Consider the function f(x)=4 - x^2 for the domain [ 0,∞). Find f^−1 (x), where f^−1 is the inverse of f. Also state the domain of f^−1 in interval notation. f^-1 (x) = ___ for the domain ___

*Tuesday, March 21, 2017 by Jermaine*

**Algebra**

Two factory plants are making TV panels. Yesterday, Plant A produced 20,000 panels. Ten percent of the panels from Plant A and 3% of the panels from Plant B were defective. How many panels did Plant B produce, if the overall percentage of defective panels from the two plants ...

*Tuesday, March 21, 2017 by Mandy PLEASE HELP!*

**Algebra**

Mr. tan makes monthly visits to his parents in Malacca a distance of 240 km from Singapore. he finds that if he increases the average speed by 10km/h, he could save a total of 20min for the journey. find the original speed of Mr. tan.

*Tuesday, March 21, 2017 by Azeem*

**Algebra**

The value of a boat is $21,200 It loses 6% of its value every year. Find the approximate monthly percent decrease in value. Round your answer to the nearest hundredth of a percent.

*Monday, March 20, 2017 by Anonymous*

**algebra**

the width of a credit card is 3 centimeters shorter than the length (L). The area is 46.75 square centimeters. Find the perimeter.

*Monday, March 20, 2017 by help me plz*

**Algebra**

The height (in centimeters) of a candle is a linear function of the amount of time (in hours) it has been burning. When graphed, the function gives a line With slope of —0.4. See the figure below. Suppose that the height of the candle after 11 hours is 22.6 centimeters. What...

*Monday, March 20, 2017 by Catherine*

**Algebra**

Dale invested his savings in two investment funds. The $12,000 that he invested in Fund A returned a 1% profit. The amount that he invested in Fund B returned a 6% profit. How much did he invest in Fund B, if both funds together returned a 3% profit?

*Monday, March 20, 2017 by Catherine*

**ALGEBRA I**

You need to rent a moving truck for two days. Rider Moving Trucks charges $50 per day and $.50 per mile. UMove Trucks charges $45 per day and $0.75 per mile. Write an equation describing each situation. Graph them on the same xy axis. You only need Quadrant I because all ...

*Monday, March 20, 2017 by JANICE*

**Algebra II**

the original value of a car was 16,800 after 2 years the cars value has depreciated to 9,000 find the value of the car after 5 years to the nearest dollar

*Monday, March 20, 2017 by Chyenne*

**Algebra**

1/// The truck for a moving company has interior dimensions of 187" x 89" x 77" but dimensions of the storage boxes are 24" x 14" x 27" if the moving company needs to move 200 storage different determine how many trucks will be needed 2/// Gomer stores his iguana food in a van...

*Monday, March 20, 2017 by Zappow*

**Algebra**

How would the surface area and volume of a prism change if it was a pyramid. How would the surface area and volume change if a cylinder became a cone?

*Monday, March 20, 2017 by YoungJedi*

**College algebra**

If 70% of a radioactive element remains radioactive after 400 million years , then what percent remains radioactive after 600 million years? What is the half-life of this element

*Monday, March 20, 2017 by Alexus*

**Algebra 2**

If you and 4 friends go to buy a drone and you find that it will cost you each $30. How many friends would you need to have with you if you wanted to get that cost down to $20/person or less. I've been stuck on this question for a while now, if you could help I'd appreciate it.

*Sunday, March 19, 2017 by UprisingFury*

**College Algebra**

I can't seem to figure this quadratic - An aircraft factory manufactures airplane engines. The unit cost C (the cost in dollars to make each airplane engine) depends on the number of engines made. If x engines are made, then the unit cost is given by the function C(x) = 0.2x^2...

*Sunday, March 19, 2017 by Jermaine*

**Algebra**

an arrow is shot straight up from a cliff 58.8 meters above the ground with an initial velocity of 49 meters per second a. write an equation that represents this situation b. Transform the equation to the format that can most easily be used to find the maximum height. What is ...

*Sunday, March 19, 2017 by Jabari*

**Algebra**

Claire jogs around an oval track and is able to complete one lap in 5 minutes. If she jogs at the same pace for 42 minutes, how many laps would she be able to jog? Write an inequality and find the number of whole laps Claire completes.

*Sunday, March 19, 2017 by Cory*

**Algebra**

A rectangle has a length of 5 and 1/2 units and an area of 132 square units. What is the width of the rectangle?

*Sunday, March 19, 2017 by Janet*

**Algebra**

Varun takes a certain number of Rotis during lunch but always wasted half a roti. Rosa takes half the number of Rotis as Varun, and always finishes her share .after 20 days, if the number of Rotis that were consumed during lunch by them together is 110 (excluding the Rotis ...

*Sunday, March 19, 2017 by Purva*

**College Algebra**

On May 18, 2010, a company reported that it had a net profit of $15.1 million, which represented an increase of 206.3% for 12-month period ending on March 31, 2010. Estimate the net profit for the previous year ending on March 31, 2009 by creating an exponential growth ...

*Sunday, March 19, 2017 by Shelia*

**Algebra**

Find the scalar equation for the plane passing through the points P1=(−3, −5, 5), P2=(1, −6, 6), and P3=(0, −9, 4).

*Sunday, March 19, 2017 by shana*

**Algebra**

Let L be the line passing through the point P=(1, −1, −5) with direction vector →d=[−2, −4, 3]T, and let T be the plane defined by −x+y−3z = −1. Find the point Q where L and T intersect.

*Sunday, March 19, 2017 by shana*

**algebra**

Please, Completely factor 5c^2-24cd-5d^2 Thank so much

*Saturday, March 18, 2017 by Anneliese*

**College Algebra**

What would be an extraneous solution to the equation 4/(x+7) +3 = -2/13

*Saturday, March 18, 2017 by Lisa*

**Linear algebra**

Let L1 be the line passing through the point P1=(−1, −1, 8) with direction vector →d1=[1, 0, −3], and let L2 be the line passing through the point P2=(7, −11, 14) with direction vector →d2=[1, 2, −3]. Find the shortest distance d between these two lines, and find...

*Saturday, March 18, 2017 by sara*

**Algebra**

can somebody please help me with this question I've spent more than 3 hours on this, still nothing Let L1 be the line passing through the point P1=(2, −4, −6) with direction vector →d1=[1, 0, 2]T, and let L2 be the line passing through the point P2=(−2, 3, −3) ...

*Saturday, March 18, 2017 by sara*

**ALGEBRA**

An aircraft factory manufactures airplane engines. The unit cost C (the cost in dollars to make each airplane engine) depends on the number of engines made. If x engines are made, then the unit cost is given by the function =Cx+−0.2x248x21,748 . What is the minimum unit cost...

*Saturday, March 18, 2017 by JANAYA*

**Math**

Amy, Betty and Clara went shopping together. Amy spent 20% more than Betty. Betty spent 25% more than Clara. If Amy spent $58 more than Clara, how much did they spend altogether? (Please Show Working Clearly and try not to use Algebra)

*Saturday, March 18, 2017 by Student at dq*

**Algebra**

An aircraft factory manufactures airplane engines. The unit cost C (the cost in dollars to make each airplane engine) depends on the number of engines made. If x engines are made, then the unit cost is given by the function =Cx+−0.2x248x21,748 . What is the minimum unit cost...

*Friday, March 17, 2017 by Shelby*

**Algebra**

Consider the following matrix. A = 7, -5 -4, 3 Choose the correct description of A Find A^−1 if it exists. Answer either Choice 1, or Choice 2: CHOICE 1: A is nonsingular; that is, it has an inverse. A^-1 = _________ or CHOICE 2 : A is singular; that is, it's inverse DOES ...

*Friday, March 17, 2017 by Shelby*

**algebra**

peter is twice as old as paul was when peter was as old as paul is now. the combined ages of peter and paul is is 56 years. how old are peter and paul now?

*Friday, March 17, 2017 by roy*

**Algebra**

Difference of two ninbers is 5 and difference of thier reciprocal is 1/10 find the numbers. Answer: X-Y=5 X=Y+5 1/X - 1/Y = 10 1/Y+5 - 1/Y =10 LCM ....

*Friday, March 17, 2017 by Anonymous*

**Algebra**

If 70 is added to a number the result is 40 less than 3 times the number find the number

*Friday, March 17, 2017 by Caleb*

**Algebra**

A $4,000 principal is invested in two accounts, one earning 3% interest and another earning 4% interest. If the total interest for the year is $126, then how much is invested in each account?

*Friday, March 17, 2017 by J*

**Linear Algebra**

I need help for the Linear Algebra B Unit 2 test. Please help. 1. For the data in the table does Y vary directly with X? If it does, write and equation for the direct variation. l X l Y l l 10 l 15 l l 16 l 24 l l 20 l 30 l A- Yes: Y=1.5X B- Yes: Y=2x C- Yes: Y=x+5 D- No: Y ...

*Friday, March 17, 2017 by Noone*

**Algebra**

In 4 years time John will be half of the father's age his father will be 33 next year, how old will John be

*Friday, March 17, 2017 by Daniel*

**Algebra**

John will be half of the father's age his father will be 33 next year, how old will John be

*Friday, March 17, 2017 by Daniel*

**Algebra**

6. List of all the Quadrilaterals with exactly one pair of Parallel sides. A. Parallelogram; Trapezoid B. Rhombus; Parallelogram; Rectangle C. trapezoid D Rhombus; Square; Rectangle I wanna say its B but I'm not sure :/ I haven't really got a 100% understanding on this topic ...

*Friday, March 17, 2017 by Random Emo Girl*

**algebra**

The average speed of an express train is 20km/hour more than the average speed of a passenger train .To cover a distance of 360kms the express train takes 3 hours less than that of the passenger train. Find the average speed of both passenger and express train.

*Friday, March 17, 2017 by chinnu*

**algebra**

An object is thrown straight up into the air at an initial vertical velocity of 32 feet per second from an initial height of 128 feet and is represented by the vertical motion model, h(t) = -16t^2 + 32t + 128. How much time does it take for the object to reach its maximum height?

*Friday, March 17, 2017 by Jo*

**Algebra HELP ASAP!!!**

What is the equation (in slope-intercept form) of the line that passes through (-3, -1) and has a slope of 3/5? A) y = 3/5x + 4/5 B) y = 3/5x - 4/5 C) y = -3/5x - 4/5

*Thursday, March 16, 2017 by help!*

**algebra**

How much of a solution that is 45% sulfuric acid needs to be mixed with a solution that is 90% sulfuric acid to produce 120 liters of a solution that is 60% sulfuric acid?

*Thursday, March 16, 2017 by Jo*

**algebra**

Please solve the following problem by using factoring and the zero-product property. 9r^2-30r+21=-4 Thanks

*Thursday, March 16, 2017 by Anneliese*

**Algebra**

The Peterson family takes their clothes to the local cleaners. The table below gives the number of coats, shirts, and dresses they had cleaned over the course of three months. They had no other items cleaned there. (January) 5 coats, 5 shirts, 6 dresses (February) 1 coat, 8 ...

*Thursday, March 16, 2017 by Shelby*

**Algebra**

I need the answers to pre algebra pizzazz pg 50 How did the angel lose his job I have the riddle I need the work!! Plz help me!!

*Thursday, March 16, 2017 by Chloe*

**Algebra**

There are 6 cyclists in a race. There will be a first-place and a second-place prize awarded. In how many different ways can the 2 prizes be awarded?

*Thursday, March 16, 2017 by heather*

**Algebra Help ASAP PLEASE!**

((I forgot how to do find inverse functions and this is important)) Find the inverse function of g(x) = 2x + 4. A) g^(-1)(x) = 4x + 2 B) g^(-1)(x) = 2x + 1/2 C) g^(-1)(x) = 1/2x - 2 D) g^(-1)(x) = 2x - 4 I *think* it might be C but I'm not sure.

*Thursday, March 16, 2017 by Tori*

**Math Algebra**

hi guys need help with a few questions. 1. Which equation represents the axis of symmetry of the function y = 2x^2+4x-6? A. y= 1 B. x= 1 C. x=3 D x= -3 2. & 3. What are the coordinates of the vertex of the graph of the function - 2. y = -x^2+6x-11 A. (3,-2) B. (3,16) C. (-3,-...

*Thursday, March 16, 2017 by jack*

**algebra**

How much of a solution that is 45% sulfuric acid needs to be mixed with a solution that is 90% sulfuric acid to produce 120 liters of a solution that is 60% sulfuric acid?

*Thursday, March 16, 2017 by jo*

**algebra**

George goes to the supermarket to buy some canned tomatoes to make salsa for a party. The cans are on sale for $0.95 each. He has $4.75. Let x represent the number of cans that he can buy. Write the equation that models this situation.

*Thursday, March 16, 2017 by Anonymous*

**Algebra**

Multiply -4b by 1-b/b? I did -4b/1 × 1-b/ b But my answer isn't adding up?

*Wednesday, March 15, 2017 by Matt*

**algebra, series**

The sum of the first n terms of a series is 1-(3/4). Obtain an expression for the nth term of the series. Prove that the series is geometric, and state the values of the first term and the common ratio. Please show workings

*Wednesday, March 15, 2017 by youngguru*

**Pre-Algebra**

The wind blew away 12 of your muffins. That was 3/7 of all of them. How many are left?

*Wednesday, March 15, 2017 by Alex*

**Algebra**

How do I factor this question? 3n^2-n-4=

*Wednesday, March 15, 2017 by Tyler*

**intermediate algebra**

inequalities –1 ≤ x – 3 ≤ 5 –2x – 5 < –2 or x – 3 < –10 Be careful of how a negative x-term is handled in the solving process. Show all math work arriving at the solutions. •Show the solution sets written algebraically and as a union or intersection ...

*Wednesday, March 15, 2017 by sean*

**intermediate algebra**

Inequalities –1 ≤ x – 3 ≤ 5

*Wednesday, March 15, 2017 by sean*

**Algebra**

TriangleWED is congruent to triangle FRI, angle W = 80degrees, angle D = 45 degrees, angle E = 55 degrees and angle R = 4x + 10. Find x

*Wednesday, March 15, 2017 by Raquel*

**Algebra**

Triangle DOG is congruent to triangle CAT, DO=5, OG = 6, DG = 7 and CA = 2x + 1. Find x

*Wednesday, March 15, 2017 by Raquel*

**algebra**

-1/5x+5/2=11/5

*Tuesday, March 14, 2017 by Anonymous*

**algebra 2**

what is the inverse of the function f(x) = 6+x ----- 2x

*Tuesday, March 14, 2017 by tom*

**algebra**

Problem Page The volume V of a fixed amount of a gas varies directly as the temperature T and inversely as the pressure P. Suppose that V=42 cm to the 3,when T=84 kelvin and P= 8kg over cm squared. Find the temperature when V=74 cm cubed and P= 10 kg over cm squared.

*Tuesday, March 14, 2017 by rebecca*

**algebra**

Solve 3x+10>=4 A. x>=-2 B. x<=2 C. x<=-2 D. x>=2

*Tuesday, March 14, 2017 by Emily*

**Algebra 2**

Are a rational expression and its simplified forms equivalent? Provide mathematical examples to support your opinions. You may use tables or graphs to organize and present your thoughts. Can somebody give me some guidance for answering this question or provide me with a good ...

*Tuesday, March 14, 2017 by Fading*

**algebra**

determine the numerical measure of each angle of parallelogram x+40 3x-20 x= m/_M= m/_I= m/_L= m/_K=

*Tuesday, March 14, 2017 by james*

**Algebra**

J is the set of all fractions in the form of a/(a)square where a cannot not equal to 0 Column A: a (any member of set J) Column B: 1 A. Quantity in column A is greater B. Quantity in column B is greater C. two quantities in both columns are equal D. relationship cannot be ...

*Monday, March 13, 2017 by Carlos*

**algebra**

1. Which solid has two bases that are triangles and three lateral surfaces that are rectangles? (1 point)triangular pyramid rectangular prism triangular prism rectangular pyramid 2. A solid with two parallel and congruent bases cannot be which of the following? (1 point)cone ...

*Monday, March 13, 2017 by Brooke*

**Algebra**

Factor: 2x^2 +13x-6 Please give step by step directions. I have tried doing it, but I can't get the right numbers. Thanks!

*Monday, March 13, 2017 by Maria*

**Algebra**

Welp, my last post I wrote wrong and everyone was answering it wrong... my bad Here are the questions: (3√6 +5√10)^2 y = √6x-18 I couldn't figure out how to solve them, and I looked up online and here are the answers. I just need to be able to solve it... 286 + 60√15 x...

*Monday, March 13, 2017 by Wes*

**Algebra 1**

I know the answers, I just don't know how to solve it and show my work. 1. (3√6 + 5√10)^2 - 286 + 60√15 2. (2 + √10)(2 - √10) - -6 3. y = √6x-18 - x (greater then or equal to) 3 Thank you

*Monday, March 13, 2017 by Wes*

**Algebra**

The sum of ages of Ram and Shyam is 32 years. Ram is older than Shyam by two years. Find their ages.

*Monday, March 13, 2017 by Mandar*

**Algebra**

For an A.P. the first term is 25 and 20th term is 500. Find the common difference.

*Monday, March 13, 2017 by Mandar*

**Algebra**

If x=16 is one of the root of the quadratic equation x square-2(7x+16)=0,find the other root.

*Sunday, March 12, 2017 by Mandar*

**Algebra**

Astronomers measure large distances in light-years. One light-year is the distance that light can travel in one year, or approximately 5.88 *10^12 miles. Suppose a star is 3.2 * 10^2 light-years from Earth. In scientific notation, approximately how many miles is it? a. 1.88 x ...

*Sunday, March 12, 2017 by Evelyn*

**algebra**

Delaney needs to rent a car while on vacation. The rental company charges $17.95, plus 16 cents for each mile driven. If Delaney only has $50 to spend on the car rental, what is the maximum number of miles she can drive?

*Saturday, March 11, 2017 by ed*

**Algebra**

Evaluate the algebraic expression for the given value of the variable. -4,x^2-18= -10 Please check my answer

*Saturday, March 11, 2017 by Tim*

**algebra**

z varies jointly with y and the square of x. If x=-2 when y=7 and z=-84,find x when z=-96 and y=2 I just need help figuring out what equation to use.

*Saturday, March 11, 2017 by brandy*

**algebra 1**

f(x) = -2x^2+4x+1 Can someone explain how the f(x) is worked into this function? I am supposed to graph the function and find the vertex and the axis of symmetry.I'm a little lost no major.

*Saturday, March 11, 2017 by Paige*

**algebra**

5 children and 2 adults tickets are $98. adult's ticket is 3 times more than childs solve the equation

*Friday, March 10, 2017 by mulenga*

**algebra**

How would you graph this, i keep entering it only and keep getting it wrong. x and y axis are numbered 1 to 10. please help y+5=-2/3(x-4)

*Friday, March 10, 2017 by Carlos*

**Algebra**

a large pizza costs $6.80 plus $.90 per topping. a different pizza costs $7.30 plus $.65 per topping. How many toppings need to be added to each piece in order for the pizzas to cost the same thing?

*Friday, March 10, 2017 by Dan*

**algebra pleeeease help**

Which solid has one base that is a triangle and three lateral surfaces that are triangles? (1 point) triangular pyramid triangular prism rectangular prism rectangular pyramid 2. Sarah needs to cover the lateral area and the base on top of the cylinder. A blue cylinder is ...

*Friday, March 10, 2017 by laila*

**Algebra**

Alka and Shweta invested ₹1800 and ₹2400 respectively in a small business.They made a profit of ₹1400.They decided to divide the profit between them in the ratio of Thier investments.How much did each get as profit? ₹1800/₹2400=3/4

*Friday, March 10, 2017 by Purva*

**Algebra**

The numerator and the denominator of a fraction are in a ratio 3:2.If 3 is added to the numerator and 2 is subtracted from the denominator,a new fraction is formed whose value is 9/4 . Find the original fraction.

*Friday, March 10, 2017 by Purva*

**Algebra**

I have to implify completely without writing complex fractions: (4y^-3/5x^-4)^2

*Thursday, March 9, 2017 by Tony*

**algebra**

Arrange 9 square tiles having side of lengths2cm in different ways. Find the perimeter of The resulting figure in each case.

*Thursday, March 9, 2017 by algebra*

**Algebra**

1.The coordinates of rectangle ABCD are A(2, 2), B(2, 5), C(6, 5), and D(6, 2). Using rectangle ABCD, find the coordinates of the rectangle that results when the center of dilation is the origin and ABCD is dilated by a scale factor of 3.

*Thursday, March 9, 2017 by Darth*

**Pre- algebra help please anyone**

X to the power of 11 like x11 and x to the power of two like x2 x9/x2 A x11 B x7 C 7 D x5

*Thursday, March 9, 2017 by helper*