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April 27, 2015

Homework Help: Math: Algebra

Recent Homework Questions About Algebra

Algebra
Use the graph to find the solutions of the given equation -X power 2 +36 = 0 graph is parabola downward open
Wednesday, April 10, 2013 at 10:11pm

algebra 2 (permutations & combinations)
from a standard deck of 52 cards, how many different five-card hands can be drawn?
Wednesday, April 10, 2013 at 8:47pm

Algebra 1
How exactly do you find/solve a Perfect Square Trinomials and factoring them?
Wednesday, April 10, 2013 at 8:37pm

algebra
A certain region is losing about 12 million acres of rain forest each year. A. Find a linear function f that calculates the change in acres of rain forest in millions in x years. B. Find f(8) and interpret the results
Wednesday, April 10, 2013 at 7:31pm

algebra
how many integers, x, for which x/2, x/3 and x/5 is also an integer can be found between 1 and 500? help me!!
Wednesday, April 10, 2013 at 7:24pm

algebra 1
find the quotient 6x^4+6x^3+8x^2 --------------- 2x^2
Wednesday, April 10, 2013 at 6:55pm

algebra
the local high school is setting up square-shaped lunch tables in the cafeteria. each table has an area of 12x^3-4x^2 square feet. if sqrt 3x+1 tables are put end to ed to form a banquet table, how long will the banquet table be? assume x>1/3 part 1: use theformula for area...
Wednesday, April 10, 2013 at 6:25pm

algebra
a motel clerk counts his 1$ and 10$ bills at the end of a day. He finds that he has a total of 57 bills having a combined monetary value of 156$. Find the number of bills of each denominaton that he has
Wednesday, April 10, 2013 at 6:04pm

Algebra
The cumulative number of AIDS cases C in the United States from 1982 to 1994 can be modeled by C = 3200x2 + 1586, and the cumulative number of AIDS deaths D from 1982 to 1994 can be modeled by D = 1900x2 + 619. In these equations x = 0 corresponds to 1982, x = 1 corresponds ...
Wednesday, April 10, 2013 at 2:25pm

chemistry
The Ka of a monoprotic weak acid is 7.25 × 10-3. What is the percent ionization of a 0.167 M solution of this acid? If the concentration is more than 1000 times greater than the Ka, then you can make an assumption that simplifies the algebra needed to solve the problem. ...
Wednesday, April 10, 2013 at 11:57am

MATH ALGEBRA
Holly has a rectangular garden that measures 12m by 14m. SHe wants to increase the area to 255m^2 by increasing the width and the length by the same amount. What will the dimensions be of the new garden ? -solving that involves quadratic equations
Wednesday, April 10, 2013 at 11:13am

MATH ALGEBRA
Holly has a rectangular garden that measures 12m by 14m. SHe wants to increase the area to 255m^2 by increasing the width and the length by the same amount. What will the dimensions be of the new garden ? -solving that involves quadratic equations
Wednesday, April 10, 2013 at 11:13am

Algebra
If f(x)= ln x, g(x) = e^3x, and h(x) = x^7, find the following... a) (fog)(x) What is the domain of fog? b) (gof)(x) What is the domain of gof? c)(foh) What is the domain of foh?
Wednesday, April 10, 2013 at 10:49am

algebra
How to multiple 250 x .25
Wednesday, April 10, 2013 at 8:51am

FACTORIAL PRODUCT(ALGEBRA)
Let N=1!⋅2!⋅3!⋅4!…9!&​#8901;10!. Let 2^k be the largest power of 2 that divides N. What is the value of k?
Wednesday, April 10, 2013 at 4:54am

math-7th grade algebra 1
Please show the steps and explain how to do this as well. 3√8 · 2√5
Wednesday, April 10, 2013 at 1:18am

math algebra 1
Please show the steps and explain how to do this as well. 3√8 · 2√5
Wednesday, April 10, 2013 at 1:16am

math algebra
the perimeter of a basketball court is 268 feet. the area is 4200 ft2. find the dimensions. using quadratics
Tuesday, April 9, 2013 at 8:28pm

Algebra
Help please! Write the series in sigma notation. 1/4+1/2+3/4+1+5/4+3/2
Tuesday, April 9, 2013 at 6:37pm

algebra 1
why would you add or subtract equations that represents real-world situations
Tuesday, April 9, 2013 at 5:57pm

algebra
write a polynomial that represents the sum off an odd integers 2n+1 and the next two consecutive odd integers
Tuesday, April 9, 2013 at 5:51pm

Algebra
Use the given zero to find the remaining zeros of the function. f(x)=x^3-2x^2+9x-18;zero;3i Enter the remaining zeros of f =
Tuesday, April 9, 2013 at 5:12pm

Algebra
A small painting has an area of 400 cm^2. The length is 4 more than 2 times the width. Find the dimensions of the painting. Solve by completing the square. Round answers to the nearest tenth of a centimeter.
Tuesday, April 9, 2013 at 4:22pm

algebra graphing
according to some students, what is the true purpose of homework?
Tuesday, April 9, 2013 at 1:59pm

algebra
factorise the left hand side of the equation xxx+7xx-21x-27=0 and the roots are
Tuesday, April 9, 2013 at 1:31pm

Algebra
Soymeal is 12% protein; cornmael is 6% protein. How many pounds of each should be mixed together in order to get 240lb mixture that us 9% protein
Tuesday, April 9, 2013 at 1:14pm

Algebra
Answer the following quadratic function f(x)= x^2 + 6x - 16 What is the axis of symmetry?
Tuesday, April 9, 2013 at 1:14pm

Algebra
Answer the following quadratic function f(x)= x^2 + 6x - 16 a)What is the vertex (h,k)of f? b)What is the axis of symmetry? c)What are the intercepts?
Tuesday, April 9, 2013 at 12:42pm

Algebra
For the given functions f and g find the following and state the domain of each result f(x)=5x+1/4x-7; g(x) = 3x/4x-7
Tuesday, April 9, 2013 at 10:35am

Algebra 2
Solve -2(3x+2y-3)>12
Tuesday, April 9, 2013 at 12:41am

Algebra
Two questions I need help with. Find the indicated partial sum using the information given. 1. a3=4/9, a7=9/64, S6 Determine wheater the infinite geometric series has a finite sum 2. 6+ 3+ 3/2 + 3/4 +.... 3. -49 + (-7) + (- 1/7) +...
Monday, April 8, 2013 at 10:38pm

Help! Algebra
Find the common ratio r and the value of A1 with the information given. 1. A3=324 A7=64 2. A4=32/3 A8=54
Monday, April 8, 2013 at 10:23pm

algebra
solve for x: x-18 =64
Monday, April 8, 2013 at 9:47pm

Algebra 1
y=3x+11 2x+y=1 method: __________ x= ____________ y= _____________
Monday, April 8, 2013 at 7:37pm

algebra
soybean meal is 14% protein; cornmeal is 7% protein. How many pounds of each should be mixed together in order to get 280-lb mixture that is 125 protein?
Monday, April 8, 2013 at 5:19pm

algebra
Find the number of terms in each sequence. 1. 2,-6, 18,-54,,,,,-4374 Find the common ratio r and the value of a1 using the information given. (assume r >0) 2.a3=324, a7=64 Find the indicated sum. 3. a1=2, r=-3; find s8 4. E like symbol with a 10 on top. On the bottom k=1 to...
Monday, April 8, 2013 at 5:14pm

algebra 2
Students at a high school all took the same English test. The scores are approximately normally distributed with a mean of 77 and a standard deviation of 9. If 2500 students took the test, approximately how many scored above 86 or below 68%?
Monday, April 8, 2013 at 5:09pm

algebra 2
In a high school, 35% of the 3500 students participate in sports. The school board is proposing a participation fee to help with costs. To get student opinion, the school board randomly selects a committee of 6 students to join a discussion of the proposal. That is the ...
Monday, April 8, 2013 at 5:06pm

Algebra
I just cannot seem to get these two problems. Any help is greatly appreciated. Use the method of substitution to solve the system. xy= 4 5x − y + 19= 0 and y^2 − 4x^2 = 7 9y^2 + 16x^2 = 323
Monday, April 8, 2013 at 5:02pm

algebra 2
In a cooler there are 8 bottles of grape juice and 12 bottles of orange juice. There are also 6 blueberry yogurts and 9 strawberry yogurts. If you grab a bottle of juice and a yogurt without looking, what is the probability that you get a grape juice and a blueberry yogurt?
Monday, April 8, 2013 at 5:00pm

Algebra.... SOMEONE HELP ME!!!!
A rectangular room on a blueprint is 2 inches wide and 5 inches long. If the scale of the blueprint to the actual room is 1:72, what is the width of the room?
Monday, April 8, 2013 at 4:58pm

algebra.. HELP ME!!
Mai spends 7 3/4 hours in school each day. Her lunch period is 1/2 hour long, and she spends a total 7/10 hour switching rooms between classes. The rest of her day is spent in 6 classes that are all the same length. How long is each class?
Monday, April 8, 2013 at 4:53pm

Algebra 2
A teacher is choosing 4 students from a class of 30 to represent the class at a science fair. In how many ways can the teacher choose the students?
Monday, April 8, 2013 at 4:21pm

math
can u help me with my algebra
Monday, April 8, 2013 at 4:07pm

Algebra please help!!
Find the number of terms in each sequence. 1. 2,-6, 18,-54,,,,,-4374 Find the common ratio r and the value of a1 using the information given. (assume r >0) 2.a3=324, a7=64 Find the indicated sum. 3. a1=2, r=-3; find s8 4. E like symbol with a 10 on top. On the bottom k=1 to...
Monday, April 8, 2013 at 3:47pm

Algebra please help!!
Find the number of terms in each sequence. 1. 2,-6, 18,-54,,,,,-4374 Find the common ratio r and the value of a1 using the information given. (assume r >0) 2.a3=324, a7=64 Find the indicated sum. 3. a1=2, r=-3; find s8 4. E like symbol with a 10 on top. On the bottom k=1 to...
Monday, April 8, 2013 at 3:47pm

Algebra please help!!
Find the number of terms in each sequence. 1. 2,-6, 18,-54,,,,,-4374 Find the common ratio r and the value of a1 using the information given. (assume r >0) 2.a3=324, a7=64 Find the indicated sum. 3. a1=2, r=-3; find s8 4. E like symbol with a 10 on top. On the bottom k=1 to...
Monday, April 8, 2013 at 3:46pm

Algebra
the angle of elevation from bottom to the top of the mountain has a measure of 60 degrees. suppose a ski lift to the top is 2000 feet long. how high is the mountain to the nearest feet? Am I suppose to find the sine of 60?
Monday, April 8, 2013 at 2:31pm

Algebra
I need some help with algebra as I'm confused as to how to solve them. Find the common difference d and the value of a1 using the information given. 1. a6= 5/4, a8= 9/4 Evaluate each sum. 2. E like symbol that has a 29 on the top. On the bottom n=1 and to the right (4n-1) ...
Monday, April 8, 2013 at 1:51pm

Algebra
I need some help with algebra I'm not sure how to get to the answer. Find the number of terms in each sequence. 1. a1=4 an=42 d=2 2. a1--0.3 an=-36 d=2.1 3. 1/12, 1/8, 1/6, 5/24, 1/4,......9/8 Evaluate each sum. 1. There is an e like symbol that has a 15 on top on the ...
Monday, April 8, 2013 at 1:04pm

algebra
Could you show me how to do these math systems and show your work so i understand how to do them. 1) 3x+2y+4z=19 2x-y+z=3 6x+7y-z=17 2) 5x+8y+6z=14 2x+5y+z=12 -3x+6y-12z=20 3) x^2+2xy-2y^2=-11 x^2+xy-2y^2=-9
Monday, April 8, 2013 at 1:38am

Algebra
The value, V< of Juan's investment portfolio can be modeled by the equation V=16t^2-256t+16,000. When will Juan's investment portfolio be worth $16.576.00?
Monday, April 8, 2013 at 12:16am

Algebra
The value in dollars, V, of a certain stock can be modeled by the equation V=-16+88t+101, where t represents the time in months.When did the stock become worthless?
Monday, April 8, 2013 at 12:13am

algebra
i need help solving this problem -58x-26=8x-230.6 please help need to see how u get the answer
Monday, April 8, 2013 at 12:02am

Algebra
Use properties of logarithms to find the exact value of each expression. Do not use a calculator. 8^log 8^5
Sunday, April 7, 2013 at 10:39pm

Algebra
Given f(x)=-4+lnx; Find the inverse of f. f^-1=?
Sunday, April 7, 2013 at 10:17pm

Algebra
The length of a rectangular flag is four yards longer than the width. The area f the flag is 140 square yards. Find the length and the width.
Sunday, April 7, 2013 at 5:45pm

Pre-Algebra
Find 3 consecutive positive integers such that the product of the first and third, minus the second, is 1 more than 5 times the third.
Sunday, April 7, 2013 at 2:29pm

algebra
To balance a seesaw, the distance, in feet, a person is from the fulcrum is inversely proportional to the person's weight, in pounds. Peter, who weighs 150 pounds, is sitting 3 feet away from the fulcrum. If Joey weighs 90 pounds, how far from the fulcrum should he sit to ...
Sunday, April 7, 2013 at 1:36pm

math - college algebra
If the rational function y = r(x) has the vertical asymptote x = 9, then as x →9+, either y → ____or _____
Sunday, April 7, 2013 at 4:46am

algebra
what is the opposite of -12 3/4 -12 is the whole number what is the opposite of that is it 51/4
Saturday, April 6, 2013 at 10:38pm

Physics (Algebra-based)
A block starts at rest and slides down a frictionless track except for a small rough area on a horizontal section of the track.It leaves the track horizontally, flies through the air, and subsequently strikes the ground. gravity= 9.81 m/s^2. height1=4.1m---- is initially ...
Saturday, April 6, 2013 at 9:42pm

algebra
Select the approximate values of x that are solutions to f(x) = 0, where f(x) = -9x2 + 2x + 6. a) {-0.71, 0.94} b) {-9,2} c) {-0.22, -0.67} d) {-1.50, 0.33}
Saturday, April 6, 2013 at 2:54pm

Algebra
How do I write the terms of the series and find the sum. 4 summation notaion sign (k+6)^2 where k=1 under the summation sign
Saturday, April 6, 2013 at 1:54pm

algebra
How do I solve this problem? 3x-2/3x=4/3
Saturday, April 6, 2013 at 12:16pm

algebra
Tom decides to make a rectangular desk top from a plywood door that was stored in the basement. The door was 2 feet longer than twice its width. To get the desired size desk he cuts 3 inches off its length and 1/2 foot off its width. If the plywood he cut off had a total area ...
Saturday, April 6, 2013 at 9:20am

algebra
A rectangular picture is 2 inches longer than it is wide. When a frame 3 inches wide is placed around the picture, the area covered by the picture and frame is 168 square inches greater than the area covered by the picture alone. What are the dimensions of the picture?
Saturday, April 6, 2013 at 9:16am

algebra
last month mayfield paper comapny sold 58 more than 3 times as many reams of paper a superior comapany if the two companies sold a total of 870 reams of paper how many reams of paper did mayfield paper company sell
Saturday, April 6, 2013 at 1:03am

algebra
One car travels 105 miles in the same amount of time it takes a second car traveling 6 miles per hour slower than the first to go 87 miles. What are the speeds of the cars?
Friday, April 5, 2013 at 10:19pm

algebra
one inch is about 2.254 centimeters .A puzzle has a length of 28 centimeters .What is the length of the puzzle in inches ,rounded to the nearest tenth of an inch
Friday, April 5, 2013 at 10:08pm

algebra 2
f(x)= X-5 +2
Friday, April 5, 2013 at 6:11pm

algebra 1
suppose xitlali can paint 6 rooms in 12 hours and alicia takes eight hours. how long would it take the two painters together to paint the 6 rooms?
Friday, April 5, 2013 at 5:27pm

Algebra
The area of a square is 40 in². If the length of each side of the square is 2x in., what is the value of x?
Friday, April 5, 2013 at 4:11pm

Algebra
A room is shaped like a trapezoid. There are windows on the walls that are parallel. The distance between the windows is x. The length of one windowed wall is 3 less than the x, and the length of the other windowed wall is 3 more than x. The area of the room is 354 ft². ...
Friday, April 5, 2013 at 4:10pm

Algebra Binomial Theorem
Hi, can somebody help me with this math problem I am stuck on? How do I use binomial theorem to expand(2x – 5y)^3. I need to show my word so any help you can provide would be greatly appreciated.
Friday, April 5, 2013 at 1:12pm

algebra 1
What is the speed, in miles per hour, of a toy car that runs 40 feet in 8 seconds? Round your answer to the nearest whole number. (1 hour = 3600; 1 mile = 5280 ft)
Friday, April 5, 2013 at 9:41am

Algebra
A box with no top is to be constructed from a piece of cardboard whose length measures 6 inch more than its width. The box is to be formed by cutting squares that measure 2 inches on each side from the four corners an then folding up the sides. If the volume of the box will be...
Friday, April 5, 2013 at 8:28am

Algebra II
I do not understand what this is asking me to do. I've several different ways and I do not feel comfortable with my answer. n^3 -5n^2 -2n +24 =0 Any guidance would be so helpful
Friday, April 5, 2013 at 6:56am

algebra
An investor invested a total of $2200 in two mutual funds. One earned 5% profit while the other earned a 3% profit. If the investor's total profit was $86, how much was invested in each mutual fund?
Friday, April 5, 2013 at 2:52am

Algebra 1
A certain United States flag has a perimeter of 58 feet . The length of the flag is 9 feet longer than the width. What are the dimensions of this flag ?
Friday, April 5, 2013 at 12:23am

Algebra II
write a fourth degree polynomial function a leading coefficient o 1 given three of its zeros are -1, 3 and 2i, then re-write it in simplified form.
Friday, April 5, 2013 at 12:23am

Algebra II
Write a quartic funciton that has 2 real and 2 imaginary roots and rewrite the polynomialin standard form.
Friday, April 5, 2013 at 12:22am

Algebra II
simplify (2x^-4 y^-2 / 3x^-6 y^-8)^3
Friday, April 5, 2013 at 12:20am

Algebra II
Given x(x) = 2x^3 - 6x^2 + 8 Rewrite the given equatin in factored form.
Friday, April 5, 2013 at 12:18am

Algebra II
What is the simplified form of (1/2x^-2)^3 X^7?
Friday, April 5, 2013 at 12:17am

Algebra
What is the correct factorization of x^2(x-8)+5(8-x)?
Thursday, April 4, 2013 at 10:11pm

algebra
In most state and local courts, 12 jurors and 2 alternates are chosen from a pool of 30 prospective jurors.The order of the alternates is specified. If a juror is unable to serve, then the first alternate will replace the juror.The second alternate will be called on if another...
Thursday, April 4, 2013 at 9:53pm

algebra
Determine the length of fencing around an 80 m by 170 m rectangular playing field if the fence is to be 25 m outside the edge of playing field
Thursday, April 4, 2013 at 9:04pm

foundations of algebra
if 950 watts gives a 164 mile radius, how much power is needed to get a 150,000 square mile area?
Thursday, April 4, 2013 at 8:41pm

Algebra
Explain how to factor the difference of two squares.
Thursday, April 4, 2013 at 8:05pm

Algebra 2
The simple formula for the nth term of an arithmetic sequence is an = 4n + 16. What is the explicit formula corresponding to the simple formula?
Thursday, April 4, 2013 at 6:53pm

Algebra
The simple formula for the nth term of an arithmetic sequence is an = 4n + 16. What is the explicit formula corresponding to the simple formula?
Thursday, April 4, 2013 at 6:37pm

algebra
If a pendulum is 30 feet long what is the period of the pendulum in seconds with function l = 0.81t^2
Thursday, April 4, 2013 at 3:17pm

Algebra
Which of the following methods can be used to construct a pattern of 10 numbers for which it would be mathematically impossible to predict the 11th term? (more then one answer.) A.Make a pattern, starting with 3, where each number is the next digit of pi (3.14159 . . .). B....
Thursday, April 4, 2013 at 2:54pm

Algebra 2
Which of the following methods can be used to construct a pattern of 10 numbers for which it would be mathematically impossible to predict the 11th term? (more then one answer.) A.Make a pattern, starting with 3, where each number is the next digit of pi (3.14159 . . .). B....
Thursday, April 4, 2013 at 2:39pm

algebra
For problems 13 and 14, assign each letter and a blank space to a number as shown by the alphabet table below. Use the code [1,-2_-3,7] encode the phrase "ONE QUESTION TO GO" The matrix C=[1,-2_-3,7] was used to encode a phrase to [7,-28,-25,-35,-2_-21,107,90,123,17...
Thursday, April 4, 2013 at 10:02am

Algebra
I have one question I really need help with. I know the partial sum process but my numbers dont seem to come out to what I think it should be. Find the partial sum S6 1. An=3n+2
Thursday, April 4, 2013 at 8:34am

algebra (f°g) problem
Find (f°g)(2) when f(x)=5x+9 and g(x)=1/x Thank you!
Thursday, April 4, 2013 at 1:30am

algebra word problem
To remodel a bathroom a contractor Charles $25 er hour plus material costs, which amount to $3825. Therefore, the total cost to remodel he bathroom is given by f(x)=25x+3825 where x is the number of hours the contractor works. Find a formula for f^-1(x). What does f^-1 compute...
Thursday, April 4, 2013 at 12:55am

Algebra
X^2(y-7)-14x(y-7)+45(y-7)
Wednesday, April 3, 2013 at 11:18pm

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Homework Help: Math

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