Thursday
May 28, 2015

Homework Help: Math: Algebra

Recent Homework Questions About Algebra

pre algebra
skylar is having a party ordered 6 pizzas sliced into 8 pieces for 12 kids what fraction of the pizza will each kid get?
Friday, October 31, 2014 at 3:19pm

algebra
1. Let f(x)=2x+5 g(x)=sqrt(f(x) -2 h(x)= f(g(x)) What is h(2)? 2. Define the function f(x)=2x-5. For what value of x is f(x) equal to f^-1(x)? Thanks!
Friday, October 31, 2014 at 2:57pm

Algebra: PLEASE HELP ME! :(
for the function y = f(x) what is the ordered pair for the point on the graph when x= b-2? (b - 2, f(b - 2)) (x, f(b)) (x, b-2) (b - 2, f(b))*** Please help!!! :/
Friday, October 31, 2014 at 2:02pm

Algebra 1B
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 (my answer???) 20 in 40 in *
Friday, October 31, 2014 at 12:07pm

Algebra 1
Write a rule for a nonlinear function such that y is negative when x = 1, positive when x = 2, negative when x = 3, positive when x = 4, and so on. The entire problem confuses me. I have no idea what its even asking besides it wants an equation.
Friday, October 31, 2014 at 10:47am

algebra 2
A 16-inch candle is lit and burns at a constant rate. After 30 minutes, the candle is 12 inches tall. Which linear equation models the relationship between h, the height of the candle in inches, and t, the time in hours that it has burned?
Friday, October 31, 2014 at 3:26am

Algebra
Factor 6x^3 + 12x^2 + 4x + 8 2(3x^2 + 2)(x + 2)
Friday, October 31, 2014 at 12:04am

algebra
Write a word problem about collecting: 5 + 6x = 21 + 4x
Thursday, October 30, 2014 at 11:36pm

algebra
Julie and two friends babysat for 5 hours yesterday. They divided their total earnings equally. Julie spent $8 from her part of the money and had $11 left. What was the total amount the three friends earned?
Thursday, October 30, 2014 at 11:31pm

algebra
Christ is building a rectangular where the front and back are 5' each. The perimeter of the dog house needs to be 28'. How long will each side of the dog house be?
Thursday, October 30, 2014 at 11:20pm

pre-algebra
Wel-min makes a square quilt that has an area of 100 square feet.It has 25 square blocks, each the same size. What is the legth of each side of a block? A-2 feet B-4 feet C-6 feet D-10 feet
Thursday, October 30, 2014 at 9:46pm

algebra
let f(x)=-5x+6 find and simplify f(x+2) f(x+2)=____
Thursday, October 30, 2014 at 9:02pm

Algebra
let f(x)=-5x+6 find and simplify f(x+2) f(x+2)=___
Thursday, October 30, 2014 at 8:28pm

algebra
7+3t=(6-t)/2
Thursday, October 30, 2014 at 8:15pm

pre algebra
A pasta machine costs $33. The ingredients to make one batch of pasta cost .33 cents.The same amount of pasta costs .99 at a store how many batches of pasta will you have to make up for the cost of the machine and ingredient pasta machine costs $33. The ingredients to make one...
Thursday, October 30, 2014 at 7:35pm

Algebra
Doing a slope project in Algebra. The instructions are to make a picture And label coordinates points.. You have to show a negative slope. A verticle slope, an undefined slope, And a positive slope. Here is my problem. I have to write An equation and show my work for the ...
Thursday, October 30, 2014 at 5:20pm

Algebra
How to factor 6x^3 + 12x^2 + 4x + 8? I keep getting (6x^2 + 4)(x + 2).
Thursday, October 30, 2014 at 4:31pm

college algebra
One isotope of holmium, 162Ho, has a half life of 22 minutes. The half-life of a second isotope, 164Ho, is 37 minutes. Starting with a sample containing equal amounts, find the ratio of the amounts of 162Ho to 164Ho after one hour. Rounded to three decimal
Thursday, October 30, 2014 at 3:36pm

ALgebra
JUST A MOM TRYING TO HELP MY CHILD WITH UNDERSTANDING. DON'T KNOW HOW TO SOLVE THE SECOND PROBLEM Write equation for each segment. show your work. (-4,-3) (-3,-3) Y = mx + b 3 = 0(-4) +b 3 = 0 + b Y = x - 3 (1,-5) (6,-2) Y = mx + b -5 = 3/5 (1) + b -5 = 3/5 +b Don't ...
Thursday, October 30, 2014 at 2:38pm

algebra
Of 375 musicians at a high school, some play only in the jazz band, some play only for the marching band, and some do both. If 250 of them play in the jazz band, and 130 play in both, how many of the musicians are in the marching band? a)110 b)100 c)135 d) 255 I thnk its c
Thursday, October 30, 2014 at 1:16pm

algebra
y=34+x30
Thursday, October 30, 2014 at 12:41pm

Algebra
I am helping my granddaughter in algebra and need to know how to get the answer. What is a solution of x² + 6x = –5? x = –6 x = –1 (I say this one) x = 1 * (she thinks it is this one) x = 6
Thursday, October 30, 2014 at 12:18pm

Algebra
Angle A is three times the measure of angle B. The sum of their measures is 128 degrees. Angle B is (x + 2) degrees. Find the value of x.
Thursday, October 30, 2014 at 12:06pm

Algebra
How to factor 6x^3 + 12x^2 + 4x + 8? I keep getting (6x^2 + 4)(x + 2).
Thursday, October 30, 2014 at 11:52am

Algebra
Write equation for each segment. show your work. (-4,-3) (-3,-3) Y = mx + b 3 = 0(-4) +b 3 = 0 + b Y = x - 3 (1,-5) (6,-2) Y = mx + b -5 = 3/5 (1) + b -5 = 3/5 +b Don't really know where to go from here
Thursday, October 30, 2014 at 11:23am

Algebra
write the equation for each of these segments. (5,7) (7,4) Y = mx + b 7 = -3/2(5) + b 7 = -1.5 + b b = 8.5 Y = -3/2(5) + 8.5 Y = -15/2 + 8.5 -15/2 + 8.5/1 -15/2 + 17/2 2/2 = 1 (-5,4)(-5,7) Y = mx + b ***Don't know how to solve this one since it is undefined 4 = 3/0(-5) + b...
Thursday, October 30, 2014 at 11:06am

algebra
A no.plus two third of itself; plus one half of itself plus one seventh of itself equals 97.find d no.
Thursday, October 30, 2014 at 3:24am

Algebra
16x^3 - 12x^2 + 20x - 15 factored = (4x^2 + 5)(4x - 3)?
Wednesday, October 29, 2014 at 10:59pm

Algebra 2
Mrs. Burnett throws a ball innthe air with an initial velocity of 96 feet per second. The function f(t) = 96t - 16t^^2 represents the path of the ball. How high will the ball go? How long will it take the ball to reach the ground?
Wednesday, October 29, 2014 at 10:52pm

Pre-Algebra
Use the formula d = rt. Find t for r = 46.6 m/h and d = 456.68 m. Show your work. This question is not multiple choice
Wednesday, October 29, 2014 at 9:10pm

Pre-Algebra
1.)Identify the underlined place in the decimal number 83.5 8 41.Round the number to that place. a.)thousandths;83.58 b.)hundredths;83.59 c.)hundredths;83.58 d.)thousandths;83.59 2.)Estimate $5.56 + $13.02 using front-end estimation. a.)about $19.60 b.)about $18.60 c.)about $...
Wednesday, October 29, 2014 at 8:05pm

algebra with pizzazz
What might you have
Wednesday, October 29, 2014 at 7:58pm

Algebra I
Use one unit multiplier to write the expression needed to convert 42 meters to centimeters? It also said;Do not carry out the actual multiplication. So do I just write my answer 42m over 1 x 100cm over 1m? Thank You for your help.
Wednesday, October 29, 2014 at 7:56pm

algebra
Please help solve with elimination method. -6x+6y=18 7x+5y=-9
Wednesday, October 29, 2014 at 7:20pm

Algebra please help out
Tomas makes balloons sculptures at a circus. In 180 minutes, he uses 252 balloons to make 36 identical balloon sculptures. Part A question how many minutes does it take to mAke one balloon sculpture? How many balloons are used in one sculpture? b. What is Toma's unit rate ...
Wednesday, October 29, 2014 at 6:23pm

Algebra 2
Use Cramer's rule to find the number of items the company must sell each week to break even. y= 20x + 200 y= 25x D= |20 -1|. -20 - (-25) . |25 -1| D= 5 Dx= |200 -1|. -200 - 0 . |0 -1| Dx= -200 Dy= |20 200|. 0 - 5000 . |25 0 | Dy= -5000 x= Dx/D x= -200/5 x= -40 y= Dy/D y= -...
Wednesday, October 29, 2014 at 11:25am

Please help-algebra
A lawn care company charges a $10 trip fee plus $0.15 per square foot of x square feet of lawn for fertilization. Which equation represents the relationship? a. x= 0.10y+15 b. y= 0.15x+10 c. y= 10x+0.15 c. x= 10y+0.15 *
Wednesday, October 29, 2014 at 11:17am

Algebra: Answer Check
(x^2 - 8x + 6)/(x + 2) = x - 10 + ((26)/(x + 2))
Wednesday, October 29, 2014 at 11:03am

Algebra: Answer Check
K(x) = -3x^4 + 5x^3 - x + 7 for x = -2. K(-2) = -79
Wednesday, October 29, 2014 at 11:03am

Algebra please help out
Ed is using the recipe shown to make fruit salad. He wants to use 30 diced strawberries in his fruit salad. How many bananas, apples, and pears should Ed use in his fruit salad? The fruit salad recipe reads 4 bananas, diced, 3 apples diced, 6 pears diced and 10 strawberries ...
Wednesday, October 29, 2014 at 12:51am

Algebra please help out
In each bouquet of flowers, there are 4 roses and 6 white carnations. Complete the 4 and 6 table to find out how many roses and carnations there are in 4 bouquets of flowers? Please help answer
Wednesday, October 29, 2014 at 12:06am

Algebra
Write 3 ratios equivalent to the ratio of boys to girls on the bus is 20/15? Please help answer
Tuesday, October 28, 2014 at 11:38pm

Algebra
A woman invests $15000 in 2 separate investment accounts. One account earns 5.1%, one earns 4.2% simple interest. If she earns $21 in interest total, how much did she earn from each account. I keep getting x to be 67,666.67 by getting to this equation: .051x + .042(15000-x) = ...
Tuesday, October 28, 2014 at 11:32pm

Geometry/Algebra
What is the slope-intercept form of the equation y – 7 = –5/2 (x + 4)? y – 2 = –5/2(x + 2) y + 7 = –x + 5/2 y = –4/7+ 2 y = –5/2x – 3 (I keep coming up with y=5/2(x+4)+7 2. Distribute 5/2 y=(5/2x) + 10 + 7 3. Simplify. y=(5/2)x + 17 and ...
Tuesday, October 28, 2014 at 11:07pm

algebra
Ms. Baldwin likes to eat cookies. She eats 3 cookies per day. After 5 days, there are 24 cookies left in the box. Write an equation represents the story in y=mx+b form
Tuesday, October 28, 2014 at 9:08pm

algebra
Ms. Baldwin likes to eat cookies. She eats 3 cookies per day. After 5 days, there are 24 cookies left in the box. Write an equation represents the story.
Tuesday, October 28, 2014 at 8:51pm

Algebra
In each bouquet of flowers, there are 4 roses and 6 white carnations. Complete the table to find how many roses and carnations there are in 4 bouquets of flowers? Please help answer thx
Tuesday, October 28, 2014 at 8:33pm

Algebra
A collector has 120 movie posters and 100 band posters. She wants to sell 24 movie posters but still have her poster collection maintain the same ratio of 120:100. If she sells 24 movie posters, how many band posters should she sell? Explain thx
Tuesday, October 28, 2014 at 8:31pm

Algebra
The ratio of North American butterflies to South American butterflies is 5:3. The ratio to South American butterflies to European butterflies is 3:2. There are 30 North American butterflies at the butterfly park. Question A. How many South American butterflies are there? B. ...
Tuesday, October 28, 2014 at 8:28pm

Algebra
Bob needs to mix 2 cups of orange juice concentrate with 3.5 cups of water to make orange juice. Bob has 6 cups of concentrate. How much orange juice can he make? Please help answer thx
Tuesday, October 28, 2014 at 8:24pm

Algebra
K(x) = -3x^4 + 5x^3 - x + 7 for x = -2. K(-2) = -79
Tuesday, October 28, 2014 at 6:50pm

algebra
a stick 36 cm long is cut into two pieces in the ratio 1:2 how is each piece show the answer
Tuesday, October 28, 2014 at 6:16pm

Algebra
Would x + 3 be a factor of 3x^3+ 5x^2 2x - 12? Ans: No, because there is a remainder of -54.
Tuesday, October 28, 2014 at 6:14pm

Algebra
(x^2 - 8x + 6)/(x + 2) = x - 10 + ((26)/(x + 2))
Tuesday, October 28, 2014 at 6:12pm

Pre - Algebra
The houses on your street are numbered with odd numbers starting with 1 and ending with 201. How many house numbers contain at least one 7? a.)30 numbers b.)28 numbers c.)24 numbers d.)20 numbers 2.)A school band has a brass section of trumpet, trombone, and tuba players.There...
Tuesday, October 28, 2014 at 6:02pm

Algebra
Ed is using the recipe shown to make fruit salad. He wants to use 30 diced strawberries in his fruit salad. How many bananas, apples, and pears should Ed use in his fruit salad? The chart lists 4 bananas diced, 3 apples diced, 6 pears diced, 10 strawberries diced. Please help ...
Tuesday, October 28, 2014 at 5:03pm

Algebra
Which 3 ratios are equivalent to the ratio of cups of water to cups of milk in a recipe 1 to 3? Also, the ratio of boys to girls on the bus is 20/15? What are 3 equivalent ratios of 20/15. Please help answer both ? Thx
Tuesday, October 28, 2014 at 5:01pm

Algebra 2 & trig
joanna invested $7500, part at a 5.5% and the remainder at a 6% annual rate of interest. if she collected a total of 435 in interest at the end of one year, how much money was invested at each rate?
Tuesday, October 28, 2014 at 4:05pm

Algebra
(x^2 - 8x + 6)/(x + 2) = x - 10 + ((26)/(x + 2))
Tuesday, October 28, 2014 at 1:54pm

algebra 2
Show by counterexample that (x+y)^-2 and x^-2+y^-2 are not equivalent??
Tuesday, October 28, 2014 at 11:59am

Algebra
Temperature AF 40 1000 60 1840 70 2260 85 2890 Find a linear model for the number of acre-feet of water that evaporate as function of temperature. E(T)=
Tuesday, October 28, 2014 at 9:04am

algebra math
Which one of the following is a geometric sequence? A. 2, –3, 9⁄2, −18⁄4 B. 0,1,2,3,... C. 8,4,2,1,1⁄2,1⁄4,... D. –7,10,23,36,.. i think the answer is D Can please check it ?
Tuesday, October 28, 2014 at 12:56am

Algebra
Translate this phrase into an algebraic expression. 7 increased by twice Malik's savings. Use the variable m to represent Malik's savings.
Monday, October 27, 2014 at 11:26pm

Algebra
Temperature AF 40 1000 60 1840 70 2260 85 2890 Find a linear model for the number of acre-feet of water that evaporate as function of temperature. E(T)= Is the answer E(T)=42T-960?
Monday, October 27, 2014 at 10:26pm

Algebra
Find the equation of the line, in slope-intercept form, that satisfies the given conditions. The graph is perpendicular to the graph of y=3x-1 and passes through the points whose coordinates are (4,-2). Y=______
Monday, October 27, 2014 at 10:21pm

Pre-Algebra
The houses on your street are numbered with odd numbers starting with 1 and ending with 201. How many house numbers contain at least one 7? a.)30 numbers b.)28 numbers c.)24 numbers d.)20 numbers 2.)A school band has a brass section of trumpet, trombone, and tuba players.There...
Monday, October 27, 2014 at 9:57pm

Algebra
(x^2 + 4x + 1) / (x - 5) = x + 9 + (46/(x - 5))?
Monday, October 27, 2014 at 9:19pm

Pre Algebra
The houses on your street are numbered with odd numbers starting with 1 and ending with 201. How many house numbers contain at least one 7? a.)30 numbers b.)28 numbers c.)24 numbers d.)20 numbers 2.) If there are two tubas in the band, what is the total number of players in ...
Monday, October 27, 2014 at 9:10pm

College algebra
Assume that the situation described can be modeled by a linear equation. Use the given information to find the y=mx+b form of the equation of the line. Suppose that a sales person observes that if an item is priced at $4 per item then 11 items are sold. If 9 items are sold for...
Monday, October 27, 2014 at 7:22pm

Pre-Algebra
The houses on your street are numbered with odd numbers starting with 1 and ending with 201. How many house numbers contain at least one 7? a.)30 numbers b.)28 numbers c.)24 numbers d.)20 numbers 2.) If there are two tubas in the band, what is the total number of players in ...
Monday, October 27, 2014 at 7:16pm

algebra. help!
A cafeteria has two soda machines. Once machine has the following flavors: Cola, root beer, and lime. The second machine has lemon, orange, cola, and cherry. Which set represents all flavors in the two machines. a. {Cola, root beer, lime} b. {cola} c. {cola, cola, root beer, ...
Monday, October 27, 2014 at 7:04pm

Algebra
Find the dimensions of the rectangle of the largest area that can be enclosed by 200 meters of fencing
Monday, October 27, 2014 at 6:35pm

algebra
|x| + 5 = 18 5 or -5 13 or -13*** |y + 4| < 1 -5 < y < -3 -3 < y < 5***? -4 < y < 1***? 1 < y < 4 |2t| - 5 = 7 t = 1 or -1 t = 6 or -6*** t = 10 or -10 t = 12 or -12 |a| -3/4 = -5/8 1/8 or -1/8 7/8 or -7/8 1 3/8 or -1 3/8 no solution Please help!? ...
Monday, October 27, 2014 at 5:27pm

Algebra
A 30-pack of blank CDs costs $9.50. A 50-pack of blank CDs costs $13. How can you tell which is the better buy?
Monday, October 27, 2014 at 5:22pm

College Algebra
The average cost of a 1 minute commercial on a leading network channel was 146,000 in the fall of 1999. This was a 8% decrease from the the cost a year earlier. What was the cost of a 1 minute commercial on the channel in the fall of 1998?
Monday, October 27, 2014 at 5:08pm

Algebra, help please!!!
Find three decimals between each of the following pairs of decimals: A: 4.333333333(repeating 3) and 4.3 B: 203.76(repeating 7,6) and 203.7(repeating 7)
Monday, October 27, 2014 at 3:41pm

algebra
Consider the f(x)=srt(x+1/x-1) and g(x)= sqrt(x+1)/sqrt(x-1). Explain why f and g are not the same function. Thank you!
Monday, October 27, 2014 at 2:49pm

algebra
Let f be a function such that f(x+y)=x+f(y) for any two real numbers x and y. If f(0)=2, then what is f(2012)? Thank you!
Monday, October 27, 2014 at 2:48pm

algebra. help!
Start from 110 feet away, a person on a bicycle rides towards a checkpoint and then passes it. The rider is travelling at a constant rate of 30 feet per second. The distance between the bicycle and the checkpoint is given by the equation d=|110-30t| at what times is the bike ...
Monday, October 27, 2014 at 2:36pm

algebra. help!
1. 3x+10≥4 a. x≥-2 b. x≤ 2 c. x≤-2 d. x≥ 2 ** 2. The tennis team is selling key chains as a fundraiser. If its goal is to raise at least $180, how many key chains must it sell at $2.25 each to meet that goal? Write and solve an inequality. a. 2....
Monday, October 27, 2014 at 2:30pm

Algebra, help please!!!
Fill in the following blanks to find other expressions for 5%: A: ___ for every 100 B: ___ for every 50 C: 1 for every ___ D: 8 for every ___ E: 0.5 for every ___ Please help, very confused by this problem.
Monday, October 27, 2014 at 2:21pm

college algebra
Using a phone card to make a long distance call costs a flat fee of $0.80 plus $0.33 per minute starting with the first minute. Write a function for the cost of a long distance call C(x) in terms of x minutes for this situation.
Monday, October 27, 2014 at 2:16pm

algebra
Simplify the expression below completely ( x^2-x-30)/( x^2-25)
Monday, October 27, 2014 at 1:42pm

Algebra
(2a - b)^3 = 8a^3 - 8a^2b + 4ab^2 - b^3 7x^3(2x + 3) = 14x^4 + 21x^3
Monday, October 27, 2014 at 12:58pm

algebra
Suppose a function f(x) has a domain of (-inf,inf) and range [-11,3]. If we define a new function g(x) by g(x)=f(6x) +1, then what is the range of g(x)? Express your answer in interval notation. Thank you!
Monday, October 27, 2014 at 11:32am

Algebra
(2x + 5y)(3x^2 - 4xy + 2y^2) = 6x^3 - 8xy + 4xy^2 + 15x^2y - 20xy^2 + 10y^3
Monday, October 27, 2014 at 11:28am

algebra--1 question
Choose the compound inequality all real numbers that are less than -3 or greater than or equal to 5 this is the problem i wrote out: x < -3 or x 'greater than or equal to' 5 (i dont have the sign) i know thats the problem written as an inequality but i do not have ...
Monday, October 27, 2014 at 11:21am

algebra 2
A skydiver jumps from an airplane at an altitude of 2,500 ft. He falls under the force of gravity until he opens his parachute at an altitude of 1,000 ft. Approximately how long does the jumper fall before he opens his chute?
Monday, October 27, 2014 at 10:48am

Algebra
Find all complex numbers such that z^2=2i. Thank you!
Sunday, October 26, 2014 at 11:04pm

Algebra
Let f(x)-3x-7/x+1. Find the range of f. Give your answer as an interval. Please enter your response in interval notation. I figured out the domain, ( -inf,-1) and (-1, inf) .
Sunday, October 26, 2014 at 10:59pm

Algebra
what is the domain of the function u(x)=1/sqrt(x)? Thank you!
Sunday, October 26, 2014 at 10:59pm

algebra
The function f(x) satisfies f(sqrt(x+1))=1/x for all x>= -1, x does not = 0. Find f(2)Thank you!
Sunday, October 26, 2014 at 10:54pm

algebra
Let A(t)3-2t^2+4^t. Find A(2)-A(1)Thank you!
Sunday, October 26, 2014 at 10:52pm

Algebra
How many real numbers are not in the domain of the function f(x)=(1/x-64)+(1/x^2-64)+(1/x^3-64)? Thank you!
Sunday, October 26, 2014 at 10:50pm

algebra
How many real numbers are not in the domain of the function f(x)=(1/x-64)+(1/x^2-64)+(1/x^3-64)?
Sunday, October 26, 2014 at 9:50pm

Algebra
How many real numbers are not in the domain of the function f(x)=(1/x-64)+(1/x^2-64)+(1/x^3-64)? Thank you!
Sunday, October 26, 2014 at 9:33pm

algebra
The cost y (in dollars) to provide food for guests at a dinner party is proportional to the number x of guests attending the party. IT costs $30 to provide food for 4 guests. a. Write an equation that represents the situation. b. Interpret the slope. c. How much does it cost ...
Sunday, October 26, 2014 at 8:32pm

algebra
A bank charges $3 each time you use an out-of-network ATM. At the beginning of the month, you have $1500 in your bank account. You withdraw $60 from your bank account each time you use an out-of-network ATM. Graph a linear equation that represents the balance in your account ...
Sunday, October 26, 2014 at 8:07pm

algebra
The cost y (in dollars) to provide food for guests at a dinner party is proportional to the number x of guests attending the party. IT costs $30 to provide food for 4 guests. a. Write an equation that represents the situation. b. Interpret the slope. c. How much does it cost ...
Sunday, October 26, 2014 at 8:04pm

Algebra
Find the domain of srt(6-x-x^2. Thank you!
Sunday, October 26, 2014 at 3:42pm

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