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Homework Help: Math: Algebra

Recent Homework Questions About Algebra

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algebra
what is the density of a billiard ball that has a volume of 100cm cubed and a mass of 250g?
Sunday, October 14, 2012 at 5:07pm

Algebra inequality
I have to choose a variable and write inequality For less than or equal to I'm using these keys <| Cuz I don't Jon how to show when I type 1. A van can hold a maximum of 8 passengers I wrote V <| 8 V is less than or equal to 8 2. To apply for a job you need to ...
Sunday, October 14, 2012 at 1:43pm

algebra
X-5/3 =1 Or X - 5 = 1 ______ 3 I'm trying to type and tell you it's x-5 over 3 equals 1 I don't know how to do I think I have to do reverse operation which is multiply
Sunday, October 14, 2012 at 1:09pm

algebra
X-5/3 =1 Or X - 5 = 1 ______ 3 I'm trying to type and tell you it's x-5 over 3 equals 1 I don't know how to do I think I have to do reverse operation which is multiply
Sunday, October 14, 2012 at 1:09pm

ALGebra
Can you check 2x + 3 (x-2) -3 (x-6) I got 2x+3x-6 -3x+18 2x+3x-3x= 2x -6+18 =12 Final answer : 2x+ 12
Sunday, October 14, 2012 at 12:56pm

algebra
5A=5-b 5A=3-b
Sunday, October 14, 2012 at 12:46pm

Algebra. .
Can you check 2/3 k = 60 I got:: 3 2 k = 60 * 3 = 90 ________________ 2 3 1 2 = 2 K = 90/2 K = 45
Sunday, October 14, 2012 at 12:19pm

Algebra pls check
Is this right ? -2(w-30) =-6w -2w -60 = -6 w +2w =+2w -60 = -4w _____________ -4 = -4 15 = w
Sunday, October 14, 2012 at 12:08pm

college algebra
a man left 1\2 of his estate to his wife, 1\6 to his daughter, and the remainder an amount of $15,000, to his son. How large was the entire estate?
Sunday, October 14, 2012 at 6:52am

algebra
For the statement that says: b + (-a) = b - a What property would that be? Is it the addition property of equality? or something else.
Saturday, October 13, 2012 at 8:20pm

Algebra
A scuba diver dives 100 feet below the waters surface. Later she rises 78 feet. How far below the surface is the diver?
Saturday, October 13, 2012 at 3:56pm

Algebra 1
oops -for my last question i meant rectangle
Saturday, October 13, 2012 at 2:37pm

Algebra 1
Perimiter of Rectangle is 54cm, the width is 1/2(length)... what is the width & Length of the triangle?
Saturday, October 13, 2012 at 2:29pm

Algebra 2
The excursion boat on the river takes 2½ hours to make the trip to a point 12 miles upstream and to return. If the rate at which the boat travels in still water is 5 times the rate of the river current, what is the rate of the current? Which of the following equations ...
Saturday, October 13, 2012 at 2:09pm

Algebra
The total amount of water in 2 containers is 35quarts. If 7 quarts gets poured from the container with less water into the continer with more water, the container with more water will have 4times as much water as the other container. How many quarts are in the container with ...
Saturday, October 13, 2012 at 12:25pm

Algebra 2
A company placed $1,000,000 in three different accounts. It placed part in short term notes paying 4.5% per year, twice as much in government bonds paying 5%, and the rest in utility bonds paying 4%. The income after one year was $45,500. What are the three equations needed to...
Friday, October 12, 2012 at 9:22pm

ALGEBRA
3 − 24 ÷ 8 + 42
Friday, October 12, 2012 at 7:44pm

Algebra
How do the solutions of the equation compare to the length of the rectangular object and the x-intercept of the graph? Provide both the solutions and measurement. x^3-10x^2+21x -108 = 0 Length: 9 inches Height: 6 inches Width: 2 inches
Friday, October 12, 2012 at 7:39pm

algebra
-13 + 20
Friday, October 12, 2012 at 7:30pm

algebra
3x - 6y + 2z - 5x - 3y + 8z
Friday, October 12, 2012 at 7:12pm

algebra
solve 8x+4=3x+8
Friday, October 12, 2012 at 6:39pm

Algebra 2
A company placed $1,000,000 in three different accounts. It placed part in short term notes paying 4.5% per year, twice as much in government bonds paying 5%, and the rest in utility bonds paying 4%. The income after one year was $45,500. What are the three equations needed to...
Friday, October 12, 2012 at 6:28pm

algebra 2
A car enters an interstate highway 15 mi north of a city.The car travels due north at an average speed of 62.5 mi/h.Write an equation to model the car’s distance d from the city after traveling for h hours. Graph the equation
Friday, October 12, 2012 at 12:53pm

Math (algebra)
I have no idea how to solve this problem... A village wants to build a community center that is projected to cost 1.2 million dollars. Cost per resident is increased by #$ as it is discovered that there are 225 fewer residents than when planning began 2 years ago. What is the ...
Friday, October 12, 2012 at 11:13am

Algebra 1
Ruffles cost $3.49 per bag. Chips-Ahoy cost $3.99 per bag. Bobby spent 42.39. If he bought 5 more bags of Chip-Ahoy than Ruffles, how many bags of each snack did he buy?
Thursday, October 11, 2012 at 11:57pm

Algebra
How would you set up problem: your average rate traveling uphill was 2.2 kilometers per hour and average rate downhill was 3.3 kilometers per hour. If he spent a total of 12 hours hiking, how long was the trail?
Thursday, October 11, 2012 at 9:39pm

Algebra
I cannot solve the problem please help me. I'm suppose to set the equations up to solve for t. x = y + rt + at^2/2 Even when I plug in the values I don't get the answer. x = 16.4 y= 0 r= 0*cos(45)a=0 t is suppose to equal 2.32 if I set the problem up correctly.
Thursday, October 11, 2012 at 4:55pm

Algebra
solve by elimination: 6a+2b = -48 -6a+b = 57 What is the solution set ( , )?
Thursday, October 11, 2012 at 4:42pm

algebra 2
Solve for x: x=4+x divided by y-3
Thursday, October 11, 2012 at 4:40pm

algebra 2
3/-8 * 2/7 * (-3) Its multiplying fractions, but it wants the answer in simplest form!
Thursday, October 11, 2012 at 4:35pm

algebra 2
-3u+7/2=-4/3u-5/4 solve for u in simplest form.
Thursday, October 11, 2012 at 4:27pm

algebra
The reflection of the tree in the lake is 49 in long. If your shadow in the lake is 14 in long and you are 5 ft, how tall is the tree? Put your answer as inches.
Thursday, October 11, 2012 at 4:13pm

algebra
find the maximum or minimum of the following quadratic function: y =x2 - 10x + 25
Thursday, October 11, 2012 at 3:40pm

Basic algebra
The length of a rectangle is 9 feet longer than twice the width. If the perimeter is 90 feet, find the length and width of the rectangle?
Thursday, October 11, 2012 at 2:23pm

Linear algebra
Show that the origin is the only equilibrium point of the system? X=ax+by Y=cx+dy Wherea,b,c and d are constants, with ad-bc not aqual to 0(zero) Please show me how to do this problem Please show me the work
Thursday, October 11, 2012 at 9:36am

Algebra
2n-11=m/4 n=m/-3 Solve for the variables using substitution
Thursday, October 11, 2012 at 2:11am

math-algebra 2
What are the solutions of the quadratic equation? 2x2 – 16x + 32 = 0
Thursday, October 11, 2012 at 1:08am

algebra
approximate square root to the nearest integer-------- square root of 46
Wednesday, October 10, 2012 at 11:36pm

algebra
Find the least common multiple of the monomials. 5a squared, and 16a cubed. Also 17b squared and 3b cubed. Could you show me how to do these. Thank you, Sandy
Wednesday, October 10, 2012 at 10:55pm

Linear Algebra
1. Considering 2 planes with equations: x + 2y - 3z = 1 x + 2y - 3z = 18 (a) Given (a,b,c) a point on the first plane, find the point where the line perpendicular to both planes passes by (a,b,c) and through the 2nd plane.
Wednesday, October 10, 2012 at 10:42pm

algebra
explain how to get answer and what is answer 14 times x to the power of 16 divided by 6 times x to the power of 11
Wednesday, October 10, 2012 at 10:27pm

algebra
-1/2m > -7
Wednesday, October 10, 2012 at 10:02pm

Algebra
How can you tell by looking at a table if its quadratic, linear or exponential? For ex. x: -2, -1, 0, 1, 2 y: 6, 1, 0, 1, 6
Wednesday, October 10, 2012 at 9:00pm

Algebra 2
The Denominator of a fraction exceeds the numerator by 4. When 3 is added to both the numerator and denominator, the fraction becomes 4/5. Find the fraction.
Wednesday, October 10, 2012 at 7:52pm

Algebra
What is the additive inverse of -2^5?
Wednesday, October 10, 2012 at 7:07pm

pre-ap Algebra 2
write a polynomial function f of least degree that has the rational coefficients, a leading coefficient of 1, and the given zeros. Given zeros: -2,2,-1,3, sqrt 11
Wednesday, October 10, 2012 at 2:19am

Linear Algebra
1. Considering 2 planes with equations: x + 2y - 3z = 1 x + 2y - 3z = 18 (a) Given (a,b,c) a point on the first plane, find the point where the line perpendicular to both planes passes by (a,b,c) and through the 2nd plane.
Wednesday, October 10, 2012 at 12:15am

Algebra
Can someone explain how you could convert a repeating, nonterminating decimal to a fraction? Thanks. :)
Tuesday, October 9, 2012 at 11:00pm

Algebra
(3/10)x-3=6
Tuesday, October 9, 2012 at 10:01pm

Algebra
Debra has 2/3 of a pound of loose green tea leaves. If she wants to keep one-half of the tea at home and the other half at work, what fraction of a pound will she have at work? 1/6, 1/4, 1/3, or 1/2? I would personally say 1/3, but, could someone explain this thoroughly?
Tuesday, October 9, 2012 at 9:57pm

Math, Algebra.
2. Sylvia has 6 1/2 boxes of chocolate to share at a family picnic. If she gives each person 1/3 of a box, how many people can receive chocolate? 13, 17, 19, or 21? I believe that the answer is 19. Take 6 1/2, divided by 1/3, and get 19 1/2. Since 19 is the closest answer, the...
Tuesday, October 9, 2012 at 9:29pm

Honors Algebra 2
How do you simplify terms like 3z^2 x 2z^3?
Tuesday, October 9, 2012 at 8:46pm

Algebra 1
What is the slope, m, of the line that contains the points (-12, 16), (-3, 4) and (6,-8)?
Tuesday, October 9, 2012 at 7:37pm

Algebra
At noon the temperature is 30 degree F. For the next several hours the temperature falls by an average of 3 degrees F an hour. What's the equation for the temperature and the hours after noon?
Tuesday, October 9, 2012 at 5:48pm

algebra
A family spends 20% of It's monthly income on food,23% on rent,and 42% on other expenses and saves the balance.if the family saves $360 per month,what is It's monthly income
Tuesday, October 9, 2012 at 5:45pm

Algebra
A natural food store makes its own brand of trail mix out of dried apples, raisins, and peanuts. One pound of the mixture costs 3.18. It contains twice as much peanuts by weight as apples. One pound of dried apples cost $4.48, a pound of raisins costs $2.40, and a pound of ...
Tuesday, October 9, 2012 at 5:22pm

Algebra
What is the inverse of y = (3/7)x + 9 I know you have to switch x and y so I get to x-9=(3/7)y from there I don't know what to do.
Tuesday, October 9, 2012 at 4:22pm

Algebra Grade 7
the ratio of square H's length to square I's length is 3 : 5, if the length of square H is 18 meters, what is the perimeter of square I?
Tuesday, October 9, 2012 at 4:08pm

Algebra Grade 7
parallelograms small parallelogram 22 cm ?? (find this number) big parallelogram 16 cm 32 cm What is the missing number and how can I find it?
Tuesday, October 9, 2012 at 4:00pm

Algebra 2
Write the standard form of the equation of the line through the given point with the given slope. Through point: (1,2) slope=7
Tuesday, October 9, 2012 at 3:37pm

Algebra
Tom has a 15 foot ladder that he leaned against the wall of his house. Tom put the base of the ladder 3 feet away from the house. How far up The house is the top of the ladder?
Tuesday, October 9, 2012 at 1:00am

algebra
simplify the expression. Justify each step. (m+4.5)-0.5
Monday, October 8, 2012 at 11:32pm

High School, Pre Algebra
-1 3/7* (-3 2/3) A. 3 2/7 B. -5 5/21 C. 11 D. 5 5/21 I got A , but then I tried figuring it out again and I think the denominator is 21
Monday, October 8, 2012 at 9:31pm

Algebra Grade 7
suppose you have ABC with AB=5, BC=7, and CA=10, and also EFG with EF=900, FG=1260, and GE=18/00. are these triangles similar, and if so what is the scale factor?
Monday, October 8, 2012 at 8:08pm

Algebra
sorry, having a brain malfunction but which is a function: "x is a student y" "x is the biological daughter of mother y"
Monday, October 8, 2012 at 8:03pm

algebra 2
Samantha needs to solve the equation x2 - 12x = 40. What must she do to each side of the equation to complete the square?
Monday, October 8, 2012 at 7:44pm

algebra 2
Samantha needs to solve the equation x2 - 12x = 40. What must she do to each side of the equation to complete the square?
Monday, October 8, 2012 at 7:20pm

Algebra
A 5 ft man cast a shadow of 3 ft standing next to a 22ft building. How far is the man standing from the building?
Monday, October 8, 2012 at 6:17pm

Algebra
A grocer mixes 5 lb of egg noodles costing $ .80/lb with 2 lb of spinach noodles costing $1.50/lb. What will the cost per pound of the mixture be?
Monday, October 8, 2012 at 5:23pm

Algebra
Susan drove for 2 hours at 85 km/hr and then for 3 hours more at 95 km/hr. What was her average speed for the entire trip?
Monday, October 8, 2012 at 5:21pm

Algebra
If 800ml of a juice drink is 15% grape juice, how much should be added to make a drink that is 20% grape juice?
Monday, October 8, 2012 at 5:20pm

Algebra
If you drive for 2 hours at 80 mph, how fast must you drive during the next hour in order to have an average speed of 75 mph?
Monday, October 8, 2012 at 5:18pm

Algebra
A farm stand owner mixes apple juice and cranberry juice. How much should he charge if he mixes 8 L of apple juice selling for .45/L with 10 L of cranberry juice selling for $1.08/L?
Monday, October 8, 2012 at 5:17pm

Algebra
A chemist has 40 ml of a solution that is 50% acid. How much water should be added to make a solution that is 10% acid?
Monday, October 8, 2012 at 5:13pm

Advanced algebra
1.write the first four terms of the sequence that begins with 2000 and has the common ratio 1.05. 2.write the first four terms of the sequence that begins with 5000 and decays 15% with each term.what is the common ratio? 3.write a recursive formula for the sequence that begins...
Monday, October 8, 2012 at 3:48pm

College Algebra
The ratio of the surface area of a solid cube to its volume is 4 to 1. The diagonal of the cube is?
Monday, October 8, 2012 at 10:36am

algebra
need help with logarithmns quiz algebra 2a unit 7 connections academy
Sunday, October 7, 2012 at 11:03pm

Algebra
Anne has 20 coins in her pocket consisting of nickels and dimes only. The total value of the coins is $1.45. How many nickels and how many dimes does she have? (Let x represent the number of nickels and y represent the number of dimes.)
Sunday, October 7, 2012 at 3:19pm

Algebra
A rectangle is 4 inches longer than it is wide. It's perimeter is 28 inches. Write a system of two equations in two variables that describes this information. Then solve the system graphically.
Sunday, October 7, 2012 at 1:38pm

algebra 2
i'm trying to solve this system of equations with 3 variables 5a-b+3c=5 2a+7b-2c=5 4a-5b-7c=-65 i tried to make the first equation like a=something so i could substitute it in to the 2nd equation, however i get decimals so it doesnt work how do i do this problem?
Sunday, October 7, 2012 at 1:29pm

algebra
10y^3+y^2-21y
Sunday, October 7, 2012 at 12:23am

algebra
10y^3+y^2-21y
Sunday, October 7, 2012 at 12:21am

algebra
M --- +. 5= -2 3.
Saturday, October 6, 2012 at 10:47pm

algebra
John measures the dimensions of a roomto be 16.6ft times 15.23 ft. How many significant digits should he use when calculating the area of the room?
Saturday, October 6, 2012 at 8:51pm

algebra
A total of $12,000 is invested in two funds paying 9% and 11% simple interest. If the yearly interest is $1,180, how much of the $12,000 is invested at each rate? We have two unknowns: the amount of money invested at 9% and the amount of money invested at 11%. Sentence (1) &#...
Saturday, October 6, 2012 at 8:51pm

Algebra
Would someone please help me figure this one out? (¡î5 b©ø/©÷)^4 a^9 / a^-©øb^5
Saturday, October 6, 2012 at 8:15pm

Algebra
A builder has 80 feet of fencing to create an enclosure adjacent to a long existing wall. He will use the wall for one side and the available fencing for the remaining three sides. If the sides perpendicular to the wall have length x feet, which of the following represents the...
Saturday, October 6, 2012 at 8:02pm

Algebra
How do I solve 6/2x - 1 - 2/2x+1
Saturday, October 6, 2012 at 7:34pm

Algebra
Of 30 runners surveyed, 22 go running in the morning and 15 go running in the evening. Seven of the runners surveyed go running in both the morning and the evening. How many runners go running in the morning but not the evening?
Saturday, October 6, 2012 at 7:10pm

Math
Algebra Find the value of 78 X n when n = 3,237.
Saturday, October 6, 2012 at 1:52pm

math-algebra
one pump can empty a pool in 5 days, wheras a second pump can emtpy pool in 7 days. how long will it take the two pumps, working together, to empty the pool?
Friday, October 5, 2012 at 7:53pm

Math(Algebra)
An arrow is shot vertically upward from the top of a cliff 80 feet tall, with an initial velocity of 64 ft/s, (the acceleration due to gravity is -16ft/sec). a. Write the quadratic equation representing this scenario when h is 0. b. Find the roots (solutions) for this ...
Friday, October 5, 2012 at 3:34pm

Algebra 2
Find f(x), if f(2b-1)=6b+2
Friday, October 5, 2012 at 2:15pm

Algebra 2
Find f(x), if f(2b-1)=6b+2
Friday, October 5, 2012 at 1:37pm

college algebra
solve x^6 - 64 = 0
Friday, October 5, 2012 at 1:14am

algebra
use the inequality -4t-8 is less than or equal to 12 a. t is greater than or equal to ? b. t + 4 is greater than or equal to ? c. t- ? is greater than or equal to 0 d. t + 10 is greater than or equal to ? e. 3t is greater than or equal to ? f. t/? is greater than or equal to -5
Thursday, October 4, 2012 at 10:26pm

Algebra Word Plob..PLEASE HELP
You have to wrap gift boxes for your club project. Each box is 4.5 inches wide, 7 inch long, and 4 inches tall. What size sheet of wrapping paper do you need to cut to cover the box? Gift wrap paper comes in sheets which are 30 inches wide and 36 inches long. How should you ...
Thursday, October 4, 2012 at 10:22pm

Algebra
You have to wrap gift boxes for your club project. Each box is 4.5 inches wide, 7 inch long, and 4 inches tall. What size sheet of wrapping paper do you need to cut to cover the box? Gift wrap paper comes in sheets which are 30 inches wide and 36 inches long. How should you ...
Thursday, October 4, 2012 at 9:57pm

Algebra
A jar contains red, blue and yellow marbles.The number of red marbles is ten more than the number of yellow marbles and the number of blue marbles is double the number of yellow marbles. If the probability of choosing a yellow marble is one-fifth , how many marbles are in the ...
Thursday, October 4, 2012 at 9:55pm

Pre-Algebra
4( x+8)+ 9x =
Thursday, October 4, 2012 at 8:59pm

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