Saturday
February 6, 2016

Homework Help: Math: Algebra

Recent Homework Questions About Algebra

algebra
simplify by removing factors of 1: 2p^2+10p+12/4p^2-4p-48
Friday, February 5, 2016 by mel

algebra
Find four consecutive terms in A.P whose sum is 72 and the ratio of product of the extreme terms to the product of means is 9:10
Friday, February 5, 2016 by sahil

algebra
Find the x- and y-intercept of the line. -7/5x -4y = 7 A. x -intercept is -7/4; y-intercept is 5 B. x -intercept is 5; y-intercept is 7/4 C. x -intercept is 5; y-intercept is -7/4 D. x -intercept is -5; y-intercept is -7/4
Friday, February 5, 2016 by Nyah

Linear Algebra
Hi, If it asks you to create a 3x3 matrix that spans R^3 so that there is a solution for every b, how do I go about choosing numbers to be in the matrix? Thanks.
Friday, February 5, 2016 by Kylo Ren

algebra 1
Alisha has 11 coins in her pocket. She only has quarters and dimes. The coins in her pocket add up to $2. How many quarters does she have? How many dimes?
Friday, February 5, 2016 by bevin

Algebra
Express in mathematical form using two variables(x,y) the sum of the numerator and the denominator of a fraction is greater by 1 than thrice the numerator
Friday, February 5, 2016 by XYZ

math/algebra
Solve the polynomial inequality and graph the solution set on a real number line. Express the solution set in interval notation x^3+x^2+16x+16>0 What is the solution set? (Type your answer in interval notation.) shannon
Friday, February 5, 2016 by shannon

algebra
Find the distance d (P1, P2) between the points P1 and P2 P1 = (−4, 4) ; P2 = (1, 6) wayne
Friday, February 5, 2016 by wayne

algebra
Find the midpoint of the line segment joining the points P1 and P2 P1= (5,2) P2= (-4,3) tom
Friday, February 5, 2016 by tom

algebra
Find the equation of a line that is parallel to the line y = −3x and contains the points (9,−4). Nicola
Friday, February 5, 2016 by nicola

algebra
Solve the polynomial inequality and graph the solution set on a real number line. Express the solution set in interval notation x^3+x^2+16x+16>0 What is the solution set? (Type your answer in interval notation.) Mike
Friday, February 5, 2016 by MIKE

algebra 2
you saved $25000 to buy a new car in time for graduation in 2020. in 2010 you invested in a certain amount of your savings in a blue chip stock that yields 5% interest compounded monthly. find out much money you started with before you saved enough to buy a new car.
Friday, February 5, 2016 by uyen

algebra/precal
If a minute hand traveled at an average of 1 mph at the tip... how long in get would the minute hand have to be?
Thursday, February 4, 2016 by sydney

algebra
A clock has a minute hand that is 14 feet long and an hour hand that is 9 feet long. What is the average speed (in mph) of the tip of the minute hand no idea how to solve this... please help :)
Thursday, February 4, 2016 by sydney

Algebra 1
-2, -12, -72, -432 find the 8th term 0.2, 1.6, 12.8, 102.4 find the 6th term 24, 12, 6, 3 find the 7th term
Thursday, February 4, 2016 by Lina

Algebra ASAP!!
7. The table shows the functions used to determine the number of points earned every month by regular and elite members of a dining club who spend d dollars that month at participating restaurants. Which statement describes the difference in these situations? A. Regular ...
Thursday, February 4, 2016 by Astral Tellurian

Algebra
2. What is the value of x in the solution to the system of equations below? 15x – 12y = 13 30x + 9y = 4
Thursday, February 4, 2016 by Astral Tellurian

Algebra
The mean on a Advanced Algebra test was 78 with a standard deviation of 8. If the test scores are normal distributed, find the interval about the mean that contains 99.7% of the scores. Use the empirical rule.
Thursday, February 4, 2016 by Anonymous

Algebra
How many solutions does this system of equations have? X-2y=6 and 3x-6y=18
Thursday, February 4, 2016 by Caden

Algebra
Alise separated her pictures into 3 piles. Each pile contained 9 pictures. How many pictures did she have in all? Write and solve an equation to represent the problem. State the answer to the problem.
Thursday, February 4, 2016 by Kenneth hoon

Algebra
Suppose the growth of a population (in thousands) is represented by the expression 32 * 2.1^x where x represents the number of years since 2010. Evaluate the expression for they year 2015. Round to the nearest whole number. A. 41 B. 1,307 C. 67 D. 622 Is it B or D??
Thursday, February 4, 2016 by Carmen

Algebra 2
Write the equation of a trend line. {(-10, 3), (-5, 1), (-1, -4), (3, -7), (12, -12)} How do I do this problem?
Thursday, February 4, 2016 by Riley

algebra
Find the distance d (P1, P2) between the points P1 and P2 P1 = (−4, 4) ; P2 = (1, 6) d(p1,P2)= ____ (Simplify your answer. Type an exact answer, using radicals as needed.) qaz
Thursday, February 4, 2016 by edward

algebra
Find the midpoint of the line segment joining the points P1 and P2 P1= (5,2) P2= (-4,3) The midpoint is _______ (Type an ordered pair. Use integers or simplified fractions for any numbers in the expression.) qaz
Thursday, February 4, 2016 by edward

algebra
Find the equation of a line that is parallel to the line y = −3x and contains the points (9,−4). Y=______ (Type your answer in slope-intercept form.) qaz
Thursday, February 4, 2016 by edward

algebra
Find the equation of a line that is perpendicular to the line y = 1/4x + 5 and contains the point (-6, 0) Y=________ (Type your answer in slope-intercept form.) qaz
Thursday, February 4, 2016 by edward

algebra
Find the intercepts and use them to graph the equation. Y = x-7 qaz
Thursday, February 4, 2016 by edward

algebra
A circle has the equation x squared plus y squared plus 8 x minus 8 y minus 49 equals 0 Graph the circle using the center (h,k) and radius r. Find the intercepts, if any, of the graph. qaz
Thursday, February 4, 2016 by edward

Algebra
Solve the polynomial inequality and graph the solution set on a real number line. Express the solution set in interval notation x^3+x^2+16x+16>0 What is the solution set? (Type your answer in interval notation.) qaz
Thursday, February 4, 2016 by edward

algebra
Scott starts with $10 and earns $5 and hour. Jill starts with $40 and earns $3 and hour. when will the two have the same amount of money in the same hours?
Thursday, February 4, 2016 by kk

algebra
x^2 + x - 12 What is the minimum value of y?
Thursday, February 4, 2016 by Sally

advance algebra
show that Sin5θ/Sinθ = 16Cospower4 θ – 12Cospower2 θ
Thursday, February 4, 2016 by Crisusseunayo

Advance Algebra
tan-1 3x + tan-1 = tan-1 (8/13)
Thursday, February 4, 2016 by Crisusseunayo

Algebra
The line at Ice Cream Parlor stretches down the block. there is one more person in line behind James than there is in front of him. There are two times as many people in the entire line as there are behind him. How many people are in line? Possible answers 56, 44, 10, 100 and ...
Thursday, February 4, 2016 by Giaby

algebra
Traveling to Washington is a 500-mile trip, that took 5 hours. The average speed of the car on the first part of the trip was 105 mph, and on the second part of the trip was 115 mph. How long did the car drive at both speeds.
Wednesday, February 3, 2016 by tottie

Algebra
Your weigh on the moon is about 1/6 of your weigh on earth. Write and solve an equation to show how much a person weighs on earth if he weighs 16 lbs. on the moon .
Wednesday, February 3, 2016 by Ella

algebra
a jewelry salesman can earn either a salary of$2500 a month or a salary of $1000 a month plus 10% of all sales. how much does he have to sell for the second choice to earn more than the first choice
Wednesday, February 3, 2016 by Emmanuella

Math
Find the intervals on which the function is increasing, decreasing, concave up, or concave down and find any local extreme values and inflection points. So I know how to do the above, but not with piece wise functions. Someone help me out? Y={3-x^2, x<0 and x^2+1, x>=0} ...
Wednesday, February 3, 2016 by Beth

Algebra
An auditorium seats 1500 people. Floor seats cost $15 and balcony seats cost $10. If the place is sold out and they make $2100 how many seats are on the floor and in the balcony?
Wednesday, February 3, 2016 by Cindy

Algebra
Suppose that a constant force is applied to an object. Newton's Second Law of Motion states that the acceleration of the object varies inversely with its mass. A constant force acting upon an object with mass 12 kg produces an acceleration of 2m/s^2. The acceleration of ...
Wednesday, February 3, 2016 by Lisa

College Algebra
A yo-yo factory has fixed operating costs of $450,000 per year. In addition to the fixed costs, the cost to produce one yo-yo is $1.10. The yo-yo company sells the yo-yos to a distributor for $5.50 each. How many yo-yos must be sold in a year to earn a profit of at least $140,...
Wednesday, February 3, 2016 by Bre

Algebra
If I Have 27 Questions And I Have 22 Correct What Did I Get On My Test The Percentage ?
Wednesday, February 3, 2016 by Lauren

algebra
Write the expression as a sum​ and/or difference of logarithms. Express powers as factors. log3(27x)
Wednesday, February 3, 2016 by edward

algebra
the sequence 3;-2;x;-24...is quadratic sequence. find the value of x
Wednesday, February 3, 2016 by sphola

algebra 1
simplify (0.4)3
Wednesday, February 3, 2016 by johnny

algebra
Solve the exponential equation. Express the solution in terms of natural logarithms. Then, use a calculator to obtain a decimal approximation for the solution. e^x = 20.9 What is the solution in terms of natural logarithms? The solution set is { }.
Wednesday, February 3, 2016 by edward

algebra
a number of two digits divided by the sum of the digits the quotient is 7 and the remainder is 6 . if the digits of the number are interchanged, the resulting number exceeds three times the sum of the digits by 5.
Wednesday, February 3, 2016 by clary

Algebra
Solve the logarithmic equation. Be sure to reject any value of x that is not in the domain of the original logarithmic expression. ln ã(x+4)=1 What is the exact solution? Select the correct choice below and, if necessary, fill in the answer box to complete your ...
Wednesday, February 3, 2016 by edward

Algebra 1 college
How much of a 12% saline solution should be mixed with a 4% saline solution to obtain 40 milliliters of a 6% saline solution?. Use a system of equations and elimination method to solve. can someone please see if I am on the right track. 12T + 4F=6x40 -4 -4F 4 8T=2x40 8T=80 8T/...
Wednesday, February 3, 2016 by Sophia

Algebra
simplify (6x^-2)^2(0.5x)^4 I think I know the answer is 2.25 but my work is wrong my teacher said and I need to get this right so plz any help is fine
Wednesday, February 3, 2016 by MrHarbold

algebra
Determine whether each expression is a polynomial. If it is a polynomial, find the degree and determine whether it is a monomial, binomial, or trinomial. 1. 7a^2b + 3b^2 – a^2b 2. 6g^2h^3k
Wednesday, February 3, 2016 by Sally

Algebra
Two planes, which are 2660 miles apart, fly toward each other. Their speeds differ by 65 mph. If they pass each other in 4 hours, what is the speed of each?
Wednesday, February 3, 2016 by Anonymous

Algebra
Find the domain of the composite function f◦g. Find the domain of the composite function f◦g. F(x)= 3/(x-3); g(x)= 2/x
Wednesday, February 3, 2016 by edward

Algebra
The population of viruses in an influenza culture after t hours is given by the function x(t) = 4et/2.5 The cost y in dollars for a new automated microscope to count x viruses in a sample is y(x) = ln 2x Create the composite function that calculates the cost y in dollars of ...
Wednesday, February 3, 2016 by edward

Algebra
Laura wants the average amount of money she spends in four days to be no more than $64. On the first three days she spends $71, $62 and $59. What is the greatest amount she can spend on day 4?
Tuesday, February 2, 2016 by Lisa

Algebra
B=(1/4)m(q+k) Solve for q
Tuesday, February 2, 2016 by Heather

Math/Algebra
Farmer Brown drives to town at 36 mph and returns at 48 mph. If his total driving time is 3 and 1/2 hours, how far away is the town?
Tuesday, February 2, 2016 by Colton

Math/Algebra
Farmer Brown drives to town at 36 mph and returns at 48 mph. If his total driving time is 3 and 1/2 hours, how far away is the town?
Tuesday, February 2, 2016 by Colton

Algebra
Wanda has a fishtank that is 2 feet long, 3 feet wide, 4 feet high. If she pours 20 cubic feet (feet3=ft3) what it the height of the water level in the tank? Round answers to the nearest hundredth.I think it is 480 feet3
Tuesday, February 2, 2016 by John Allen

Algebra
Wanda has a fishtank that is 2 feet long, 3 feet wide, 4 feet high. If she pours 20 cubic feet (feet3=ft3) what it the height of the water level in the tank? Round answers to the nearest hundredth
Tuesday, February 2, 2016 by John Allen

Algebra
A salespersons monthly income depends on the amount of her sales. Her monthly income of salary of $1300 plus 14% of her monthly sales. Write a linear equation for her monthly income for sales of x dollars (I=mx+b)
Tuesday, February 2, 2016 by Allye

algebra
I am thinking of two numbers whose sum is 5. If I add the second number to twice the first number, I get 2. What are the two numbers
Tuesday, February 2, 2016 by Robin

Algebra
75% of the students on academic team earned 6 honors on the state examinations. the rest of the students on the team passed the state examinations. there were zero. if 30 students passed the ecam with honors, which proportion can be used to fun the total number of students who...
Tuesday, February 2, 2016 by Mariam

Algebra
a car rental company has two rates. The first rate is 45$ per day plus 29.5 cents per mile the second rare is 90$ per day plus 0.07 per mile. If you rented at the 90$ rate, how many miles you would need to drive to break even?
Tuesday, February 2, 2016 by Mariam

math, science, algebra, geography
I am having trouble in 5th grade.
Tuesday, February 2, 2016 by Natalie

algebra
At at basketball game,adult tickets were sold at $1.00 each and student tickets at 75c each. If 150 tickets were sold and $140 was collected,how many tickets of each kind were sold?
Tuesday, February 2, 2016 by sadi

algebra
A motorist drove for 2 hours at one speed and then for 3 hours at another speed. He covered a distance of 252 km. If he had traveled 4 hours at the first speed and one hour at the second speed, he would have covered 244 km. Find the speeds.
Tuesday, February 2, 2016 by sadi

algebra
if the selling price of 5 pears and 4 mangoes is 41.75 while the cost of 8 pears and 5 mangoes is $2.45,what is the price of each pear and each mango?
Tuesday, February 2, 2016 by sadi

algebra
The sum of the digits of a two digit number is 12,and the units digit is twice the tens digit. Find the number?
Tuesday, February 2, 2016 by sadi

algebra
in four years's time a father will be three times as old as his son. Six years ago,he, he was seven times as old as his son. how old are they now?
Tuesday, February 2, 2016 by sadi

algebra
if A gives B $3, B will have twice as much as A. If B gives A $5, A will have twice as much as B.How much does each have?
Tuesday, February 2, 2016 by sadi

algebra
Seven years ago a women was four times old as her sons age at that time.In seven years years from now the mother will be twice as old as her son would be then.Find their present ages. Answer
Tuesday, February 2, 2016 by latief

algebra
The volume of a triangular prism is 264 cubic feet the area of the base is 48 square feet. Find the height of the prism
Monday, February 1, 2016 by ryan

Introductory algebra
1/11-(-4/11) add or subtract as indicated
Monday, February 1, 2016 by Kim

algebra
State whether the growth (or decay) is linear or exponential, and answer the associated question. The population of Jamestown is increasing at a rate of 2.5% each year. If the population is 25,000 today, what will it be in 2 years?
Monday, February 1, 2016 by Cheryl

algebra
What are the vertex, axis of symmetry, maximum or minimum value, and range of y=-5(x+2)^2-8? please explain to me how you would solve this..I don't really understand. The answer is given.. The vertex is (-2, -8); the axis of symmetry is x= -2; k= -8 is the maximum value; ...
Monday, February 1, 2016 by Alexa

algebra
H(t)=16t^+192t+2560 describe the height in feet, of the rock t seconds after thrown. What is the height of the rock in feet, 8 seconds after through?
Monday, February 1, 2016 by P J

Algebra
equations and inequalities unit test for questions 1-5, solve the equation 4. 3(4-2x)=-2x (1 point) a. -1*** b. 1 c. 2 d. 3 5. 5.4+0.2x=-1.4x+8.6 a. 2 b. -2 c. .2*** d. 20 For questions 6-7, simplify the expression 6. -4 - 5(x+8) a.-5x - 44 b.-5x + 36*** c.-x - 8 d.-20x + 8 7...
Monday, February 1, 2016 by conchobar (connor)

Algebra
A boat has a speed of 20 mph in still water. While traveling on a river at top speed, it went 40 miles upstream in the same amount of time it went 60 miles downstream. Find the rate of the river current.
Sunday, January 31, 2016 by Rob

Algebra
A rectangular garden has a walk around it of width x. The garden is 20 ft by 15 ft. Write a function representing the combined area, A(x), of the garden and walk. Write as a polynomial is standard form.
Sunday, January 31, 2016 by Anonymous

Algebra
the perimeter of a rectangle is 54 inches. two times the width of 3 centimeters more than the length. find the dimensions of the rectangle.
Sunday, January 31, 2016 by Julianna

algebra
The function D (t) = 16t^2 to the second power – 140t gives the distance a car going a certain speed will skid in t seconds. Find the time it would take for the car to skid 170 feet. The time to skid 160 feet is __________ seconds.
Sunday, January 31, 2016 by mm

algebra
The function D (t) = 13t^2 to the second power – 120t gives the distance a car going a certain speed will skid in t seconds. Find the time it would take for the car to skid 170 feet. The time to skid 170 feet is __________ seconds.
Sunday, January 31, 2016 by mm

algebra
The owner of a local chocalate shop wants to develop a new trail mix. How many pounds of chocalate covered cashews worth $5.00 per pound should be mixed with 10 pounds of granola bites worth $3.00 per pound? 5x+3x=10 8x=10 ------ = x=10/8 lbs. 8
Sunday, January 31, 2016 by Saniya

algebra
a rectangular plot of farmland will be bounded on one side by a river and on the other sides by a single strand electric fence . with 800m of wire at your disposal,what is the largest are you can enclose, and what are its dimensions ?
Sunday, January 31, 2016 by joan

math,algebra
an open box is to be made by cutting small congruent squares from corners of a 12cm by 12cm . sheet of tin and bending up the sides . how large should the squares cut from the corners to be make the box hold as much as possible ?
Sunday, January 31, 2016 by tonai

COLLEGE ALGEBRA
Find the dimensions of a rectangle with a Perimeter of 100 cm - its width is 2/3 its length.
Sunday, January 31, 2016 by KAREN

algebra
solve the equation 2logx+log4=2 Can someone walk me through this
Saturday, January 30, 2016 by Anonymous

algebra
find the zeroes and state the multiplicity of multiple zeroes y=(x+1)^2 (x-1) (x-2) I know that x=-1 x=1 x=2 I dont know how to find the multiplicities
Saturday, January 30, 2016 by joe

Algebra 1
A contestant on a quiz show gets 50 points for every correct answer and loses 100 points for each incorrect answer. After answering 24 questions, the contestant has 300 points. How many questions has the contestant answered correctly? Incorrectly? Use models, pictures, ...
Saturday, January 30, 2016 by Simon

Algebra 1
A contestant on a quiz show gets 50 points for every correct answer and loses 100 points for each incorrect answer. After answering 24 questions, the contestant has 300 points. How many questions has the contestant answered correctly? Incorrectly?
Saturday, January 30, 2016 by Anon

College Algebra
Find all real and complex roots and type complex answers in the form a+bi. x^4-9x^2+20=0
Saturday, January 30, 2016 by Tom

algebra
serenity is 13 years old than chase. the sum of their ages is 27. how old are they?
Saturday, January 30, 2016 by Anonymous

Math Pre-Algebra
Maria left her house and walked two miles north then she turned and walked 3 miles west. How far is Maria from her house?
Friday, January 29, 2016 by Sabbah

Algebra
Li is making beaded necklaces. For each necklace, she uses 27 spacers, plus 5 beads per inch of necklace length. Write an equation to find how many beads Li needs for each necklace. a.input variable b.output variable c.equation
Friday, January 29, 2016 by Anonymous

Math, pre-algebra
The volume of a rectangular prism is 6x^3 -x^2 -2x. Which model could represent the rectangular prism? A. Height: 3x-2 Length: 2x+1 Width: x B. Height: 3x+2 Length: 2x-1 Width: x C. Height: 3x-2 Length: 2x-1 Width: x D. Height: 2x-2 Length: 3x+1 Width: x I don't understand...
Friday, January 29, 2016 by Student

algebra
What is the equation of the given line in standard form? Use integer coefficients. y = -6.9x + 5.1 A. -69x + 10y = -51 B. 69x + 10y = 51 C. 69x + 10y = -51 D. -69x + 10y = 51 how would I solve it steph by step? I think the answer is C.
Friday, January 29, 2016 by Alexa

Algebra 2
Solve each system. x-4y-6z=-34 -7x+5y-7z=-24 z=5x-7y+18 These are my answers below but I know that they are wrong: x=-3894 y=-112852 z=-107,509,144 I have tried to solve this system probably 10 times, and still not getting an answer that checks back into the original equation...
Friday, January 29, 2016 by Taylor

Algebra 1 - 9th Grade
A contestant on a quiz show gets 50 points for every correct answer and loses 100 points for each incorrect answer. After answering 24 questions, the contestant has 300 points. How many questions has the contestant answered correctly? Incorrectly?
Friday, January 29, 2016 by Anon

algebra
Multiply. (n - 5)(n - 1)
Friday, January 29, 2016 by elijah

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Homework Help: Math