# Homework Help: Math: Algebra

## Recent Homework Questions About Algebra

Linear algebra
Suppose that the sequence x0, x1, x2... is defined by x0 = 1, x1 = 5, and xk+2 = 3xk+1+10xk for k≥0. Find a general formula for xk.

algebra
I need to write an inequality with the following information;I have a summer business selling book markers. They cost .75 to make and I'm selling them at \$4.00 each. Write an inequality with variables showing earnings with the sale price and the number sold. I'm so confused ...

College Algebra
Solve using substitution.If the system has infinitely many solutions, express your answer in terms of k. If the system is inconsistent, enter INCONSISTENT. Here is my work: y=5x-5 5x-y=5 5x-(5x-5)=5 5x-5x+5=5 5=5 y=5x-5 k=5x-5 5x=k+5 x=1/5k+1 x,y = (k/5+1, 5k-5)

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*10^12 light-years from Earth. In scientific notation, approximately how many miles is it? a) 1.88 * 10...

College Algebra
A box contains \$7.80 in nickels, dimes, and quarters. There are 46 coins in all, and the sum of the numbers of nickels and dimes is 2 less than the number of quarters. How many coins of each kind are there? Here is my work so far: x + y + z = 46 x + y = z - 2 .5x + .10y + .25y...

algebra
To completely factor 5c^2-24cd-5d^2, I used the following steps: (5c d)(c 5d) to give terms,ignoring signs,5c^2,cd,25cd,5d^2. +cd-25cd. (5c+d)(c-5d) Please correct,if necessary,and show correct way to show this problem. Thank You.

Rate and Sped Algebra
It takes Sisyphus two days to carry a pile of rocks up a hill. When I helped out, it took us only 1.2 days to carry all of the rocks. How long would it take me to carry the rocks by myself?

College Algebra
Three bottles of water and 2 bagels cost \$8.23. At the same prices, 2 bottles of water and 5 bagels cost \$8.64. Find the price per bottle of water and the price per bagel. Work so far: 3x + 2y = 8.23 2x + 5y = 8.64

College Algebra
A gift store is making a mixture of almonds, pecans, and peanuts, which sells for \$4.50 per pound, \$3 per pound, and \$4 per pound, respectively. The storekeeper wants to make 50 pounds of mix to sell at \$4.38 per pound. The number of pounds of peanuts is to be three times the ...

College Algebra
The income from a student production was \$23,000. The price of a student ticket was \$3, and nonstudent tickets were sold at \$7 each. Five thousand tickets were sold. How many tickets of each kind were sold? Work so far: x = Student tickets y = non student tickets x + y = 23000...

College Algebra
Sam invested \$1900, part of it at 6% and the rest at 8% yearly interest. The yearly income on the 8% investment was \$32 more than twice the income from the 6% investment. How much did he invest at each rate? work so far: x + y = 1900 .06x + .08y = ? Thank you.

Algebra
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? A) 3 B) 4***** C) 5 D) 6

algebra
What quantity of 40% acid solution must be mixed with a 10% acid solution to produce 540 ml of a 20% acid solution? I'm not sure how to set this up

math algebra three system equation
2x+y+2z=25 3x-y+6z=48 5x+2y+4z=55 I got stuck after step 2 of trying to eliminate the first two equations where do I go from their and would kindly like full explanation of how to solve it so I can practice it out. Thank you :)

algebra
The admission for a school play is \$2.50 for children and \$9.00 for adults. On a certain day, 288 people attended the play, and the total money collected from sales was \$1760. How many children and how many adults were admitted?

Math intermediate algebra
The perimeter of a triangle is 33 inches. The sum of the length of the longest side and twice the length of the shortest side is 31 inches. Twice the length of the longest side minus the sum of the lengths of the other sides is 12 inches. Find the lengths of all sides. How do...

College Algebra
A goldsmith has two gold alloys. The first alloy is 30% gold; the second alloy is 80% gold. How many grams of each should be mixed to produce 50 grams of an alloy that is 68% gold? amount of 30% gold ______grams amount of 80% gold ______grams

Col. Algebra
I'm needing help with understanding /solving this problem. Can you please help? In triangle ABC, the angle C is six times as large as angle A. The measure of angle B is 20 degree greater that that of angle A. Find the measure of the angles.

algebra
The ordered pairs (1, 81), (2, 100), (3, 121), (4, 144), and (5, 169) represent a function. What is a rule that represents this function?

Algebra
Consider the line =y+76x2 . Find the equation of the line that is parallel to this line and passes through the point , −7 4 . Find the equation of the line that is perpendicular to this line and passes through the point , −7 4 .

Algebra
Use arrow notation to wrote a rule for this translation. the cornites used to be a= 1,3 b= 4,5 c= 3,1 but then were shifted 1 unit to the right and 2 units down. The aigted coordinates are a= 2,1 b= 5,2 c= 4,-1 I dont understand the rule part.

algebra
If Mr.Chiko earns N\$ x in a week and spend N\$ y, what part of his weekly salary did he save?

algebra
The sum of the three numbers in Arithmetic Progression is 33. If the numbers are increased by 2, 1, and 6 respectively the new numbers will be in Geometric progression. Find these numbers.

College Algebra
Let f(x) = . Find a formula for a function g whose graph is obtained from f by the given sequence of transformations. (1) shift left 3 units (2) vertical stretch by a factor of 2 (3) reflect across the x-axis

Algebra
b) y = 3(.25)^x growth or decay y-intercept:

Algebra
The yearly per capita consumption of whole milk in the United States reached a peak of 40 gallons in 1945, at the end of World War II. By 1970 consumption was only 27.4 gallons per person. It has been steadily decreasing since 1970 at a rate of about 3.9% per year. (a) ...

Algebra
Determine whether each function is an example of exponential growth or decay. Then find the y-intercept. a) y = 2(4)^x growth or decay y-intercept: b) y = 3(.25)^x growth or decay y-intercept:

Algebra 2
Given the expression 5a^2b – 13ab + 7a^3 – 4b, do the following as instructed below: Put it in decending order. I got 7a^3+5a^2b-4b-13ab. Is it correct? If not please correct me.

Algebra 2
Let f(x) = 3x^2 – x + 2 and g(x) = 5x^2 – 1. Find f(g(x)). Show each step of your work. I got 75x^4 -35x +6 If that is wrong can you correct me. Thank you!

Algebra
solve the equation by completing the square. round to the nearest tenth. x^2+8x=10 A. 1.1, 9.1 B. 1.1, -9.1 C. -1.1, 9.1 D. -1.1,-9.1 my answer is A is that correct

Algebra
solve the equation by completing the square. round to the nearest tenth. x^2+8x=10 A. 1.1, 9.1 B. 1.1, -9.1 C. -1.1, 9.1 D. -1.1,-9.1 my answer is A is that correct

Algebra
The Community Recreation Center is developing plans for a new sports facility. Community members can submit suggestions for the new facility, along with basic scale drawings of their ideas. Elena wants to include a new 15- by 30-meter basketball court in the athletic center. ...

Pre-Algebra
The sum of their ages. is 97. The difference of their ages is 19. Find their ages.

math algebra
\$199.99 smartphonde on sale for \$167. what percentage decrease is this 99

algebra
The length of a rectangle is 2 1/2 times the width, and the perimeter is 42 feet. What are the dimensions of this rectangle?

Pre Algebra
A baker can prepare 2 1/2 dozen cupcakes in 1/4 hour. what is the unit rate?

Algebra 2
You invest an initial \$100 in an account that has an annual interest rate of 3%, compounded quarterly. How much money will you have in the account after 20 years?

Algebra
If 3/5 is added to twice the reciprocal of a number , the result is 1. Find the number.

Algebra
Solve the equations: (a+5/4a)+11/12=2/3a 4x/3-(2x+3/6)=9/2

Algebra
Solve the equations: (a+5/4a)+11/12=2/3a 4x/3-(2x+3/6)=9/2

algebra
16L:28L what is the ratio of a fraction in simplest form with whole numbers in the numerator and denominator

further algebra
a tennis ball is dropped from a height of 30mtrs, and it rebounds four-fifths of the distance it has fallen after each fall. find 1. the height of nth bounce 2. the total distance traveled on rebound before coming to rest.

Algebra/Precalculus
Solve the system of linear equations and check any solutions algebraically. (If there is no solution, enter NO SOLUTION. If the system is dependent, express x, y, and z in terms of the parameter a.) 3x-3y+6z=6 x+2y-z=8 5x-8y+13z=4 I don't know what parameter A is... Do I solve...

Algebra 1
How do I find the minimum and maximum possible measurements of an ostrich egg that is 1.6 kilograms to the nearest tenth of a kilogram

algebra
The ratio of Natalie’s markers to Susan’s markers was 5:3 at first. After Natalie gave 25 markers to Susan, they had an equal amount of markers each. How many markers did they have altogether?

Algebra

Math Algebra
A drive took some hours to travel from Rome to Milan. His average speed for the whole journey was 80 km/hour. For the first half of the journey he traveled at an average speed of 50km/hour. Find his average speed for the second half of the journey. In this case half refers to ...

Algebra 2
Dana invests \$8,000 into her son college fund when he is born. The college fund earns 3% interest and is compounded daily. What will the value of his account be if he takes the money out at 18 to go to college? Please write answer rounding to 2 decimal places.

algebra 1
write an equation for the line that passes through (5,-2) AND (10,1)

Algebra
2. Which is not a combination? -choosing 3 toppings for your pizza -lining 3 students up in a row -choosing 2 desserts from a tray of 10 - Choosing 5 students to represent a class of 30 3. How many ways can you choose 3 dishes from a menu of 8? 24 336 144 56 4. Is choosing 5 ...

Algebra
It's the civil war and General Lee has a huge army. He split it into two parts keeping 1/3 under his command and giving 2/3 to his trusted general Stonewell Jackson (do not count generally or Jackson themselves in any calculations) General Lee fights a battle and lose 30% of ...

Algebra 2
Claire has borrowed \$\\$5,\!000\$. She plans to pay off the loan in full after two payments. She will make one payment in 3 years, then another payment in 6 years. The second payment will be exactly double the amount of the first payment. How much is the first payment if the ...

Algebra 2
Claire has borrowed \$\\$5,\!000\$. She plans to pay off the loan in full after two payments. She will make one payment in 3 years, then another payment in 6 years. The second payment will be exactly double the amount of the first payment. How much is the first payment if the ...

Algebra 1
Factor the expression. 27w^2-12 I don't have an answer, I don't understand the steps can someone show me the correct steps for this problem, and then I can solve it?

Solve each equation by graphing the related function. If the equation has no real-number solution, write no solution. NOTE: when I write + it has a minus on the bottom too x^2+7=0 a. x= +7 b. x = +3.5 c. x= 0 d. no solution *** 3x^2=0 a. +3 b. +1/3 c. 0 *** d. no solution 1/4x...

Math, Algebra
I asked these questions yesterday and thanked whomever helping me before clicking the links. When the links were just google searches, however, they didn't help me seeing as I already did that. The google search calculator doesn't show all steps, and when I tried to plug my ...

algebra
Yogi is 6 years older than Michelle. The sum of their ages

Algebra
Check my answer- Solve the system of equations algebraically. Show all of your steps. Y=x^2+2x Y=3x+20 My answer: X^2+2x+3x+20 X^2-x-20 (x-5),(x+4)=0 x=5, x=-4 y=35, y=8 Thank you!

Algebra
What is the expression x^-4×x^5 O think it is x^9 because the reciporical of x^-4 is x^4 and adding the exponents is x^9

Algebra Concentration Problem
John is making his own trail mix. He has bought two kinds of trail mix from the store, one that is 65% peanuts and one that is 30% peanuts. If he wants to have 10 lbs of trail mix that is 40% peanuts, how much of each will he need to use?

Algebra
A rectangles width is one half its length. If the diagonal equals 20 inches find the area

Math, Algebra (fast help would be nice)
So I did this whole math test and before I could hit "finish", my computer died and nothing saved. I have no memory of how I figured them out. Could you guys help please? Find the lateral area of the square pyramid. Show all steps. Base: 8m Length(height): 22m Find the surface...

algebra 1
The Olivares family forgot to fill up the gasoline tank of their minivan at the beginning of a long trip. After driving 120 miles, there were 10 gallons remaining in the tank. If their car used fuel at the rate of 1 gallon every 20 miles, which equation describes the number of...

Algebra
Come up with a new linear function that has a slope that falls in the range -1<m<0. Choose two different initial values. For this new linear function what happens to the functions values after many iterations? Are the functions values getting closer to a particular ...

Algebra
Markus had M dollars in his bank account. After removing 1/5 of the money in the account and then removing another 200, Markus now had 800. How much money did Markus have initially?

algebra 2
how to find the value of sec theta -15/4 and Tan theta 12 when theta is greater than zero and less than 360

Algebra
Admissions to a baseball game is \$2.00 for general admission and \$6.50 for reserve seats.The receipts were \$3836.50 for 1133 paid admissions.How many of each tickets were sold?

Algebra
Kevin is 20 years older than his sister Joan.In 14 years,he will be twice as old as Joan.How old is of of them now?

Algebra
Find the solution set of 2√x = x - 3. A. {1, 9} B. {9} C. {1, -9} I got a quadratic and factored it as (x - 9)(x - 1). Then the solutions are x = 9 and x = 1. But the answer is supposed to be just 9. However, wouldn't x = 1 also work, if we do √1 = -1?

algebra 1
Find the radius if a circular lid with an area of 12inch ^2. using (y-h^2 (y-k)^2=r2 I'm pretty confused any help would be great.

Algebra
Find polynomial function of degree 3, given -1,2,-8

Math (Algebra 2)
The odds in favor of Carl beating his friend in a round of golf are 7 : 4. Find the probability that Carl will beat his friend. Would I take 7/(7+4)=77 So, 77 would be the correct answer? Thanks!

algebra
The denominator of a fraction is 3 more than twice the numerator. If both the numerator and denominator are decreased by 7 and the simplified result is 7/19 find the original fraction

Linear algebra
Find all complex numbers z satisfying z3 = 27i and give your answer as a comma-separated list of values in the form a+bi.

algebra
8 x + 4 = 68

algebra
6 x, when x = 7 Evaluate

Algebra 2
Find the exact coordinates of the points on a circle of radius 12.5 at an angle of 180°

Algebra
At noon, Professor Simon has a petri dish with 10,000 cells of Bacteria A. In another petri dish, he has 33,000 cells of Bacteria B. Every hour, Bacteria A grows by 8%. Every hour Bacteria B cells die off, decreasing the number of cells by 6%. After how many hours will there ...

algebra invers mathod
4x+y=8/2x+3=-1

Algebra
what is the cube root of 14 in radical form

Algebra
Can you guys help me solve this problem I dont know why I cant get it. Thanks. Solve for x. (26000-x)2813.95 + x(314.73)=26000(640.2)

Math/Algebra
Explain the composition of an algebraic expression, 3 sentences, an example

algebra
A copper conductor 130metrrs long hasa resistance of 4.30ohms. If the resistivity of a copper is 1.42*10ohms determine the cross sectional area of the conductor in mmsquared

Algebra

Algebra
Find the zeros of the function f(x)=(m^2-9)(9m^2+24m+16)

Algebra 2
What is the intersection of a cone and a plane parallel to a line along the side of the cone? Provide mathematical examples to support your opinions. You may use equations, diagrams, or graphs to organize and present your thoughts. You are encouraged to think about this ...

Algebra
A rectangle's width is 6 inches less than its length. If it's area is 216 square inches find the dimensions of the rectangle. Write an equation and solve

math - algebra

Algebra
A triangle has a height that is 4 inches less than its base. If the triangle has an area of 86 square inches, set up and resolve an equation to find its base and height.

Algebra
An amplifier has a 50 watt output and a 5 watt input. What is the gain in decibels for this amplifier, rounded to the nearest decibel?

Algebra
I need help with these Algebra problems in which I need to give the square and the cube of each expression in simplified form. 1. -2t^2k 2. 3rs^4 3. 5m^3n 4. -4x^2y^2

Algebra
30 is the product of Chrissy's height and 2.

algebra
Isaac was 51cm when he was born. When he was 10, he had grown in length by 174% how tall was he?

ALGEBRA
equation in graphing form: f(x)=(x+3)^2+2 original equation: f(x)=x^2+6x+ 11 state the vertex??

Algebra 2
Dante is making a necklace with 18 rows of tiny beads in which the number of beads per row is given by the series 3 + 10 + 17 + 24 + ... a. Use summation notation to write the series, give i.the lower limit of the sum ii.the upper limit of the sum iii.the explicit formula of ...

College Algebra
I need to insert 1 or more sets of parenthesis or brackets to make the following equation equal 0 and then equal 1: -2^2+2^2/1/3-1/3*3-4 I have tired every combination I could think of and can't get it right.

Algebra
How do I simplify (x+1)(x(-4-5i))(x-(4+5i))?

Algebra
John can paint a house in 10 hours. Adam can paint the same house in 15 hours. A. Write an equation that can be used to find the time in hours, t, it would take John and Adam to paint the house together.

Algebra 1
Find the given value of 5^a= 3^5^2. (the 3^5^2 is a radical, with the numbers in the right place)

Algebra 1
A high school club has a performance, with 800 tickets to sell. Tickets are \$6 before the day of the show, and \$9 on the day of the show. They must sell \$5000 in tickets. How do I write a system of inequalities to represent the equation?

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