Sunday
March 1, 2015

# Homework Help: Math: Algebra

algebra...
In a school, there are 4 more students in Class A than in Class B, and 4 more students in Class B than in Class C. As a reward for good behavior, a teacher decides to give out some sweets. Every student in class C got 5 more sweets than every student in Class B, and every ...
Tuesday, March 12, 2013 at 12:10pm

algebra
What is the sum of all the possible values of a for which 25x^2+(a−15)x+9 has exactly one distinct real root?
Tuesday, March 12, 2013 at 12:08pm

algebra
Given the system of equations x(x+y)=9 y(x+y)=16 the value of xy can be written as a/b where a and b are positive coprime integers. Find a+b.
Tuesday, March 12, 2013 at 12:06pm

MAths algebra
Tiger woods won the Buick Invitational.The following scorecard shows the result of Round1.there are 18 holes? per round and the table shows the number of times woods got each type of score. Score on a hole and Number of times score occurred Eagle (-2) 2 Birdie(-1) 4 Par (0) 10...
Tuesday, March 12, 2013 at 11:31am

algebra
a model rocket is shot straight up from a roof the height at any time t is aproximated by the model h=-t(squared) +3t+28,where h is the height in metres and t is the time in seconds . When does the rocket hit the ground?
Tuesday, March 12, 2013 at 5:36am

MAths algebra
ON day 1 each atheletic will begin the morning as follows Jog =3/2miles, walk=7/4 miles,Rest=5/2 minutes? and Walk=1 mile,. 1Q. Bettys atheletic trainer told her to follow the begining exercise trainig schedule on day 1.On day 2,she is to increase all distances and times by 1/...
Tuesday, March 12, 2013 at 2:06am

algebra
I have to find the x and y intercepts of -128 = 52x + 88y
Monday, March 11, 2013 at 10:55pm

Algebra
Tell whether the graph opens up or down. Find the coordinates of the vertex. Write an equation of the axis of symmetry. Y=3x^2 The graph opens up but I dont get how you would find the coordinates of vertex and how to write the equation of axis of symmetry. Please help!
Monday, March 11, 2013 at 10:28pm

Algebra
Express in a different or equivalent form. - 11x + 3 / 4x - 3
Monday, March 11, 2013 at 10:22pm

Algebra II
Find the Linear function with the following properties: f(-9)=-0 and the slope of f equals 3/4
Monday, March 11, 2013 at 9:33pm

algebra
factor (1-y)^8
Monday, March 11, 2013 at 9:27pm

Algebra
Please look at the following simplification of an algebraic expression. Which line contains the mistake and why? Line 1: (2x + 6x) + 4y + 3x - 2xy Line 2: (8x) + 4y + 3x - 2xy Line 3: 8x + 3x + 4y - 2xy Line 4: 11x + 4y - 2xy Line 5: 13xy
Monday, March 11, 2013 at 9:12pm

Algebra
9x^3+36x^2+36
Monday, March 11, 2013 at 8:53pm

algebra
Graph the solutions of each linear inequality. y≥4x-3 where would i start on the graph and where would i go ? BIG test tomorrow need help asap :) thx
Monday, March 11, 2013 at 8:36pm

Algebra-Ms. Sue
Monday, March 11, 2013 at 8:31pm

Algebra
Which kind of function best models the data in the table? Use differences or ratios. x y 0 1.7 1 6.8 2 27.2 3 108.8 4 435.2 A.linear B.quadratic C.exponential D.none of the above I think it is C...?
Monday, March 11, 2013 at 7:55pm

Algebra
A ball is thrown into the air with an upward velocity of 28 ft/s. Its height (h) in feet after t seconds is given by the function h = –16t² + 28t + 7. How long does it take the ball to reach its maximum height? What is the ball’s maximum height? Round to the ...
Monday, March 11, 2013 at 7:51pm

Algebra
A model rocket is launched from a roof into a large field. The path of the rocket can be modeled by the equation y = –0.04x2 + 8.3x + 4.3 , where x is the horizontal distance, in meters, from the starting point on the roof and y is the height, in meters, of the rocket ...
Monday, March 11, 2013 at 7:50pm

Mountain multiplication
I've been studying per-algebra on my own.. I've been told to use mountain multiplication,but, have never used that tool!
Monday, March 11, 2013 at 7:20pm

algebra URGENT HELP
analyze the graph of the following function solve R(x)=x(x-16)^2 /(x+11) solve the following inequality write solution in interval notation x+14/x-8 less than or equal to 1
Monday, March 11, 2013 at 7:03pm

Algebra
If an object is dropped from a height of 144 ft, the function h(t) = –16t² + 144 gives the height of the object after t seconds. When will the object hit the ground? 1.5 s 3 s 6 s 9 s I think it is 3s...?
Monday, March 11, 2013 at 6:19pm

algebra
The length of a piece of fabric is 8y yards. Landon cuts 7 yards from it to make some cushion covers. He then cuts another 3y yards to make a curtain. The remaining material is cut into 4 equal pieces. How long is each piece?
Monday, March 11, 2013 at 6:18pm

algebra!
How many positive integers, a, are there such that 2027 divided by a leaves a remainder of 7?
Monday, March 11, 2013 at 4:57am

algebra!!!
At a museum, ticket prices are $13 for adults and$11 for children. If a tour group paid $179 for their tickets, how many people were in the tour group? Monday, March 11, 2013 at 4:38am Algebra 2.... Simplify.(Is this problem more clear than the previous post?) First part.. a^4/3 times c^1/6 all over 9b^3...everything is in the parenthesis and is raised to the power of -2 MULTIPLY TO THIS SECOND SET: a^3 times b^2 all over 3c.. everything is in the parenthesis and is ... Sunday, March 10, 2013 at 10:21pm Algebra 2 ... * Simplify. a to the power of 4/3 times c ^1/6 all over 9b^3..... everything is in the parenthesis and is raised to the power of -2....times the whole thing to, a to the power of 3 times b to the power of two all over 3c.... everything is in the parenthesis and is raised to -1... Sunday, March 10, 2013 at 9:44pm algebra math Lucas makes crosses out of a scrap piece of wood by cutting it into two pieces. He always makes the cut so that the cross piece is one-third the length of the vertical piece. If a length of scrap wood is 28 inches, what will be the length of each piece of the cross? Sunday, March 10, 2013 at 9:12pm algebra using substitution to solve -3x+y= -17 2x-3y=23 Sunday, March 10, 2013 at 9:12pm Algebra Find the smallest positive integer N such that 13^N \equiv 1 \pmod{2013}. Sunday, March 10, 2013 at 4:46pm ALGEBRA 2 Predict the population of bacteria for each situation and time period. -55 bacteria that double every hour a. after 3 hours b. after 5 hours Sunday, March 10, 2013 at 3:49pm algebra I have to solve this equation using substitution. 3x+5y=10 2x+ 1/2y=24 This is all one problem Sunday, March 10, 2013 at 2:11pm Algebra 1 Sarah took the advertising department from her company on a round trip to meet with a potential client. A total of 9 people took the trip. She was able to purchase coach tickets for$380, and first class tickets for $1070. She used her total budget for airfare for the trip, ... Sunday, March 10, 2013 at 1:53pm Algebra 1 There were 409 tickets sold for a basketball game. The activity card holder's ticket cost$ 1.75, and the non-card holder's ticket cost $2.25. The total amount of money collected was$753.75. How many of each kind of tickets were sold?
Sunday, March 10, 2013 at 1:48pm

Algebra 1
Solve the system by addition 10x+3y=4 -20x-6y=-8
Sunday, March 10, 2013 at 12:17pm

Algebra 1
Solve the system by addition. 10x+3y=4 -20x-6y=-8
Sunday, March 10, 2013 at 12:13pm

algebra
i am to consider the line -x-3y=2 what is the parallel line slope and the perpendicular line slope
Sunday, March 10, 2013 at 11:57am

algebra URGENT HELP
form a polynomial whose degree and zeros are given. dont expand a) degree 3,zeros,-2,0,4 b)degree 4,zeros, -2 multiplicity 3,1 multiplicity 1 solutions a)p(x)= x(x+2)(x-4) B)p(x) =(x+2)^3(x-1)
Sunday, March 10, 2013 at 8:22am

algebra
creat a graph for the function that models the percentage of adulat height attained by a boy who is years old. then creat a graph for the function that models the percentage of adulat height attained by a girl who is years old.
Sunday, March 10, 2013 at 5:29am

algebra URGENT HELP
A)p(x)= x(x+2)(x-4) b)p(x)=(x+2)^3(x-1)
Sunday, March 10, 2013 at 12:03am

algebra
Triangles ABC and DEF are similar. Find the area of triangle ABC. Round your answer to the nearest tenth. the answer should be __________m^2 triangle abc has a 12m. triangle def has 12m and 18m.
Saturday, March 9, 2013 at 10:26pm

Algebra 2...
On isometric dot paper, graph the system of equations at right. What shape is their intersection? Use color to show the intersection clearly on your graph. 10x + 6y + 5z = 30 6x + 15y + 5z = 30 Is the intersection where the two planes OVERLAP?
Saturday, March 9, 2013 at 7:44pm

Algebra
Parking in a student parking lot costs 2.00 for the first half hour and $1.75 for each hour thereafter. A partial hour is charged the same as a full hour. What is the longest time a student can park for$9.00? Show your work.
Saturday, March 9, 2013 at 6:14pm

Algebra
area of a triangle with a base of 1 4/5 yards, and a height of 5/7 yards.
Saturday, March 9, 2013 at 5:12pm

College Algebra
Consider only the discriminant, b2 - 4ac, to determine whether one real-number solution, two different real-number solutions, or two different imaginary-number solutions. 2x2 = -2 -5 Thank you
Saturday, March 9, 2013 at 4:42pm

Algebra
six times a number minus twice the same number.
Saturday, March 9, 2013 at 4:40pm

algebra
p(X)= X(X+2)(X-4) P(X)=(X+2)^3(X-1)
Saturday, March 9, 2013 at 3:02pm

algebra
solve A)p(x)= x(x+2)(x-4) b)p(x)=(x+2)^3(x-1)
Saturday, March 9, 2013 at 11:55am

Algebra
In 1980 median family income was about $18,000 and in 2000 it was 40,000. (a) Find slope of line passing through points (1980, 18,000) and (2000, 40,000) (b) Interperate slope as a rate of change (c) If the trend continues, estimate the median family income in 2006. Saturday, March 9, 2013 at 10:49am Algebra The cost of driving a car includes both fixed ans mileage costs. Assume that it costs$152.20 per month for insurance and car payments ans $0.22 per mile for gasoline oil and routine maintenance. (a) Find value m and b so that y-mx=b modeks the monthly cost of driving the car ... Saturday, March 9, 2013 at 9:36am algebra The sum of two numbers is 57 and the difference is 23 . What are the numbers? Saturday, March 9, 2013 at 1:27am algebra Last semester, a certain professor gave 11 As out of 226 grades. If one of the professor's students from last semester were selected randomly, what is the probability that student received an A? (Assume that each student receives one grade.) Saturday, March 9, 2013 at 12:52am Algebra II (-4x^(2)-3x)/(2) Friday, March 8, 2013 at 6:21pm algebra: functions what would be the rule for this?? m n 15 12 10 8 5 4 0 0 Much appericiated Friday, March 8, 2013 at 5:56pm algebra slope of the line parallel to y=6x-8 Friday, March 8, 2013 at 4:39pm algebra arrange the terms in descending order (can any one give an example) 5-4x2+x3-6x Friday, March 8, 2013 at 1:37pm Algebra I thought number 4 on this list was incorrect but didn't know how to fully explain it here is the list that I have. Please look at the following simplification of an algebraic expression. Which line contains the mistake and why? Line 1: (2x + 6x) + 4y + 3x - 2xy Line 2: (... Friday, March 8, 2013 at 1:25pm college algebra An advertising agency conducted a survey and found that the number of units sold, N, is related to the amount a spent on advertising (in dollars) by the following formula: N = 2,500 + 400 ln a (a ¡Ý 1) How many units are sold after spending$1,000? (Round your ...
Friday, March 8, 2013 at 1:24pm

Algebra
11x + 4y - 2xy Is this correct and if not why?
Friday, March 8, 2013 at 1:19pm

algebra
What is the largest value of d, such that for some degree d polynomial f(x) with integer coefficients, |f(x)|=1024 for more than d integer values of x?
Friday, March 8, 2013 at 8:27am

algebra
determine the coefficient and the degree of each term in the polynomial 5y^6-2y+3
Friday, March 8, 2013 at 7:54am

algebra
A circular coaster, with a diameter of 7 inches, is positioned on a white placemat. The placemat is a circle whose radius is equal to the diameter of the coaster. About how many square inches of the placemat are NOT covered by the coaster? Show your work.
Friday, March 8, 2013 at 6:50am

algebra
Identify the property or rule that justifies each step in the calculation. 4/7k+(j+1/7k) ____________ 4/7k+(1/7k+j) ___________ (4/7k+1/7k)+j _____________ k(4/7+1/7)+j _________________ 5/7k+j ___________
Friday, March 8, 2013 at 6:16am

algebra
x^2+2y^2-3xy for x=2 and y=3
Friday, March 8, 2013 at 2:46am

algebra
x^2+2y^2-3xy for x=2 and y=3
Friday, March 8, 2013 at 2:03am

algebra 1
A salesperson at a clothing store earns a 5% commission on all sales. How much commission does the sale person earn on a 300\$ sale?
Thursday, March 7, 2013 at 11:39pm

Algebra
Out on my street, there are a certain number of pigeons sitting on telephone poles. If there were exactly 2 pigeons sitting on each telephone pole, then 1 pigeon would have no space to sit on. If there were exactly 3 pigeons sitting on each telephone pole, then there would be ...
Thursday, March 7, 2013 at 10:49pm

Algebra
Out on my street, there are a certain number of pigeons sitting on telephone poles. If there were exactly 2 pigeons sitting on each telephone pole, then 1 pigeon would have no space to sit on. If there were exactly 3 pigeons sitting on each telephone pole, then there would be ...
Thursday, March 7, 2013 at 10:49pm

Algebra
Out on my street, there are a certain number of pigeons sitting on telephone poles. If there were exactly 2 pigeons sitting on each telephone pole, then 1 pigeon would have no space to sit on. If there were exactly 3 pigeons sitting on each telephone pole, then there would be ...
Thursday, March 7, 2013 at 10:49pm

Algebra
Alan and Bob are playing with numbers. Starting with the number n=1 they take turns performing arithmetic manipulations with n. Alan goes first and always multiplies n by 3. Bob adds 1 or 2 to the number n, depending on a coin toss. A number is called reachable, if it can ...
Thursday, March 7, 2013 at 10:46pm

Algebra
what is the smallest positive integer N such that 13^N \equiv 1 \pmod{2013}
Thursday, March 7, 2013 at 10:45pm

algebra
Scientists can determine the age of ancient objects by a method called radio carbon dating. The bombardment of the upper atmosphere by cosmic rays converts nitrogen to a radioactive isotope 14C of carbon with a half-life of about 5710 years. Vegetation absorbs carbon dioxide ...
Thursday, March 7, 2013 at 10:39pm

algebra
THE COMMUTER Sensible Sally has a job that is 35 miles from her home. She needs to be at work by 8:15 a.m. Sally wants to maximize her sleep time by leaving as late as possible but still get to work on time. From experimentations, Sally discovered that if she left at 7:10, it ...
Thursday, March 7, 2013 at 10:29pm

Algebra
The difference of the cubes of two consecutive odd positive integers is 400 more than the sum of their squares. Find the sum of the two integers.
Thursday, March 7, 2013 at 10:24pm

algebra
√5 ____ √45 How do you simplify this. Do you multiply the top and bottom by the square root of 45
Thursday, March 7, 2013 at 10:12pm

math algebra
a diver dives from a cliff .when her centre of gravity is 46 ft above the surface of the water. her initial vertical velocity leaving the water is 9 ft per second. after how many secs does she hit the water? solve
Thursday, March 7, 2013 at 8:48pm

algebra
Simplify 3x(x^2 + 6x - 8)
Thursday, March 7, 2013 at 8:27pm

algebra
multiply using FOIL and identify values of a, b, & c. (5x +5)(6x - 8)
Thursday, March 7, 2013 at 8:26pm

Algebra 1
The area of a rectangular floor is 8x+6x-20. The width of the desktop is 2x+4. What is the length of the floor?
Thursday, March 7, 2013 at 8:25pm

algebra
Simplify (uv)0 ______ (u3 v)2
Thursday, March 7, 2013 at 8:22pm

Algebra
Simplify (x^-6)-3
Thursday, March 7, 2013 at 8:20pm

Algebra 1
6t^2+21t-12 Factor the expression I dont know how to figure it out
Thursday, March 7, 2013 at 8:18pm

Algebra 1
A ball is thrown upward with an initial velocity of 35 meters per second from a cliff that is 80 meters high. The height of the ball is given by the quadratic equation h = -49t^2 + 35t + 140 where h is in meters and t is the time in seconds since the ball was thrown. Find the ...
Thursday, March 7, 2013 at 7:13pm

Algebra
Simplify 6x - x^2 (x-3)
Thursday, March 7, 2013 at 6:57pm

Algebra
Simplify (x-7)( x+7)
Thursday, March 7, 2013 at 6:07pm

Algebra 2
Because of friction and air resistance, each swing of a pendulum is a little shorter than the previous one. The lengths of the swings form a geometric sequence. Suppose the first swing of the pendulum has an arc length of 100 cm and a return swing of 99 cm. a.)On which swing ...
Thursday, March 7, 2013 at 5:57pm

Algebra
A certain nation is losing 26 million acres of rain forest each year. (a) Find the linear function f that calculates the change in acres of rain forest in millions in x years. Use x as a variable (b) find f(3) and interperate the result. f(t)= Simplify Interperate result ...
Thursday, March 7, 2013 at 5:51pm

Evaluate the expression 15 - n when n= 9 I am not sure but is it 6?
Thursday, March 7, 2013 at 4:02pm

algebra
graph the system and write the solution -2x+y=6 y=1/2+3
Thursday, March 7, 2013 at 3:55pm

Algebra 1
2k^2-13k-24 Factor the expression..
Thursday, March 7, 2013 at 3:08pm

Pre-Algebra
How do you Factor t^2 + 4z^2
Thursday, March 7, 2013 at 2:35pm

Algebra
Find the balance in the account, 4,000 principal earning 6% compounded annually after 5 years.
Thursday, March 7, 2013 at 2:30pm

Pre Algebra
How do i factor 9t^2+5t-4 using the "ac" method?
Thursday, March 7, 2013 at 1:47pm

algebra
solve the compound inequality write the solution in interval notation 2u+4>-6 and 3u-6> -3 =
Thursday, March 7, 2013 at 12:33pm

Algebra
Remember to show all of the steps that you use to solve the problem. Use the comments field to explain your work. A survey about the student government program at a school finds the following results: 190 students like the program 135 students think the program is unnecessary ...
Thursday, March 7, 2013 at 12:00pm

Algebra
Rectangle ABCD has an area of 72 units squared. The length of BF is 4 units. Algebracially prove that the sum of the areas of triangles CBF and ADF are equal to 36 units squared.
Thursday, March 7, 2013 at 7:19am

algebra
The number N of state and federal inmates in millions during year x, where x>2002 can be approximated by the following formula N= 0.03x-58.91 Determine the year in which there were 1.3 million inmates. It was in the year_______
Thursday, March 7, 2013 at 2:26am

algebra
N= 0.03x - 58.91
Thursday, March 7, 2013 at 2:21am

algebra II
What are the possible rational zeros of f(x) = 2x3 – 15x2 + 9x + 22?
Thursday, March 7, 2013 at 12:30am

algebra!!
How many integer values of x are there such that |x−3|+5<16?
Thursday, March 7, 2013 at 12:05am

algebra
How many reachable numbers are there between 1 and 1000?
Thursday, March 7, 2013 at 12:00am

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