# math,help

Most popular questions-
## math,help

Is this trinomial a perfect square x^2-6x+9 if the trinomial starts with x^2 and 1/2 of the middle term coefficient squared equals the last term, then it is a perfect square. tell me what you found. i thought it was not a perfect square. because i tried

*asked by jasmine20 on April 19, 2007* -
## math,help

the problem says: one day, the temperature at 2:00AM was 44 degrees farenheiht , and by 2:00PM the temperature was 68 degrees farenheit. WHat was the hourly rate of temperature change? the possible answers are to pick from (a) 1 f/h (b) 2 f/h (c) 3f/h (d)

*asked by Jasmine20 on January 26, 2007* -
## math,help

how can i factor this out completly x^4+x^3-12 i know that4*-3=-12 but how can i get that middle term x^2*x^2=x^4 first you cannot take out any GCF. so if you decide to use grouping, you can create an equivalent problem: x^4 + x^3 - 6 - 6 then by using

*asked by jasmine20 on April 20, 2007* -
## math,help

i am having difficulty with this problem can someone help me. Problem #1 Write in simplest form (48a^5b)/(12ab^2) this is what i get: 4a^4b^-1 Problem #2 how do i start it: subtract. Express your result in simplest form (12)/(z) minus (10)/(z) Your #1 is

*asked by jasort20 on March 16, 2007* -
## math,help

what formula do i have to use for this problems. Problem #4 John Lee saving account has a balance of $2449.After 7years what will be the amount of interest be at 8% compounded semiannually? Problem #5 Southewest Dry cleaners believes that it will need new

*asked by student on June 29, 2007* -
## math,help

Also, can someone set this problem up into equations so i can solve.thanks A plane took 1 hour longer to travel 560 miles on the first portion of a flight than it took to fly 480 miles on the second portion. If the speed was the same for each portion, what

*asked by jasmine20 on April 20, 2007* -
## math,help

Okay i am still trying to understand how to come up with a radical expressions and their applications, and apply to your daily life. I need more examples if any can help me out .... Is there a way of modeling it if i wanted to use a house for instance i

*asked by jasmine20 on April 3, 2007* -
## math,help

can someone explain to me also how to do addition with equations. Solve the system by addition 5x-3y=13 4x-3y=11 its easy try properly It's not easy "It's not easy" Then how come I found the answer: x = 2; y = -1, in just five seconds by just looking at

*asked by jasmine20 on February 10, 2007* -
## math,help

this is from another section one of the problems can someone help me. dierections: use the simplex method to solve each linear programming problem. maximize z = 12x1 +15x2 +5x3 subject to: 2x1+2x2+x3 =0,x3>0

*asked by jas on June 13, 2007* -
## math,help

how do i set this up...i need help in the set up... In deciding whether or not to set up a new manufacturing plant, analysts for a popcorn compnay ave decided that a linear function is a reasonable estimation for the total cost c(x)in dollars to produce x

*asked by student on July 18, 2007* -
## math,help

what formula do i use for the following problem: which of the following investments is larger after 19years? a) $7500 is deposited annually and earns 4.5% interest compounded annually. b)$600 is deposited monthly and earns 4.5% interest compounded monthly.

*asked by student on June 30, 2007* -
## Math,help

how do i evalute this problem if possible. i will decribe it it has an index of 3 then a squaroot sign then for the radicand (-64) since the cube root of 64 is 4(4 times 4 times 4 = 64).. the (-) part, you just tack on, since a (-) times (+) times (-)

*asked by jasmine20 on April 20, 2007* -
## math,help

how do i find the following: is there a formula for this? Problem #15 Find the constant term that should be added to make the following expression a perfect square trinomial. x^2+7x square a few binomials and see if you can see a pattern e.g. (x+3)^2 = x^2

*asked by jasmine20 on April 15, 2007* -
## math,help

how do you change the following decimal into a fraction. -3.6666666 3 2/3 or 11/3 Memorize .666666 repeating as 2/3 Now if the sixes do not repeat forever, the fraction can be found as 36666666/1000000 which probably can be reduced some... thats right

*asked by jasmine20 on April 15, 2007* -
## math,help

I did the revision for this one i posted before but i don't seem to find my error... Multiply. (x-8)^2 this is what i did to solve. (x-8)(x-8) then I foiled x^2-8x-8x+64 then i combined like terms x^2-16x+64 correct

*asked by jas20 on March 2, 2007* -
## math,help

Can someone show me how step by step how to solve this problem... Rewrite the middle term as the sum of two terms and then factor by grouping. x^2-2x-63 step 1. Find two factors which when multiplied will give you -63 and when added will give you -2 how

*asked by jas20 on March 2, 2007* -
## math,help

okay the problem states. the price of an item is given by p=2x^2-100 Find the polynomial that represents the revenue generated from the sale of x items. So this is what i did so far: First i tried solving for x using the equation. so p+100=2x^2 the rest i

*asked by Jasmine20 on January 24, 2007* -
## math,help

a company is taking a survey to find out whether people like its product. Their last survey indicated that 70% of the population like the product. based on that, of a sample of 58 people, find the probability of the following. a) all 58 like the product.

*asked by student on July 13, 2007* -
## math,help

for this one how do i set it up? IF THE SIDE OF A SQUARE ARE DECREASED BY 3CM, THE AREA IS DECREASED BY 81CM^2. WHAT WERE THE DIMENSIONS OF THE ORIGINAL SQUARE?

*asked by jasmine20 on April 20, 2007* -
## math,help

I need help with thisone solve: ((x)/(5x+10))+ ((x-3)/(x+2)) = (7)/(5) Let's take that first part: (x)/(5x+10) In the denominator, factor out "5" That leaves that part as: x/(5(x+2)) So now we have: ((x)/5(x+2)) + ((x-3)/(x+2)) = 7/5 We can multiply BOTH

*asked by jasmine20 on April 19, 2007* -
## math,help

The height h in feet of an object after "t" seconds is given by the function h = -16t^2+70t+8 How long will it take the object to hit the ground? round answer to nearest thousandth this is what i have -16t^2+70t+8=0 x = (-70 +/- sqrt (4388))/(-32) from

*asked by jasmine20 on April 15, 2007* -
## math,help

i am stuck with this problem: Problem #12 Solve by using the quadratic formula. 5x^2 + 5x = 3 i am at this step x = (-5 (+/-) sqrt (85))/(10) you are done!

*asked by jasmine20 on April 15, 2007* -
## math,help

Can someone help me understand the following in terms that i can understand because i've read the book,definitions i've done research and i am new with this and i still don't understand.The teacher is hopeless at explaining that's why i am here for help.

*asked by jacky on March 21, 2007* -
## math,help

is this correct solve and graph the solution set: -3x+10>25 -3x> 25-10 (-3x)/(-3) > (15)/(-3) x < -5 correct.

*asked by jasort20 on March 18, 2007* -
## math,help

what are the challenges of working with rational expressions i've searched in my math book and online i can't seem to find that answer. Can somoene help me out .. Since this is not my area of expertise, I searched Google under the key words "math rational

*asked by jas20 on March 7, 2007* -
## math,help

I need help factoring this out 6a^2-5a+1 so far what i have is this: (3a-1)(3a ) If you expand your answer you will not get the original expression, so you are wrong. hint: 3a x ?a = 6a^2

*asked by jas20 on March 2, 2007* -
## MATH,HELP

Can someone show me how to even do this problem. Find all positive values for K for which each of the following can be factored. x^2 + x - k News flash: It can be factored with any term (although the roots may not be real roots). Now if you mean factored

*asked by jasmine20 on February 9, 2007* -
## math,help

I have a graph which points are: (-1,-2),(0,2),(1,4) would the equation for this line be y=3x+1 No. These points do not lie on a line. If you read the points off of a graph, you read them wrong.

*asked by Jasmine20 on January 27, 2007* -
## math,help

and then this one as well : state the dual problem for each linear programming problem. minimize w =y1+y2+4y3 subject to: y1+2y2+3y3 >=115 2y1+y2+8y3>=200 y1 +y3 >=50 with y1>=0, y2>=0, y3>=0

*asked by jas on June 13, 2007* -
## math,help

can someone help me set this word problem up into equations so i can solve. I don't want the answer just if you could help me with how to set it up. thanks The base of ladder is 14feet away from the wall. The top of the ladder is 17feet from the floor.Find

*asked by jasmine20 on April 20, 2007* -
## math,help

this is what i have left but i don't know how to finish it. THe length of a rectangle is 1cm more than 4 times its width. if the area of the rectangle is 74cm^2, find the dimensions of the rectangle to the nearest thousandsth. so then: a =Lw A = 74 W= W

*asked by jasmine20 on April 15, 2007* -
## math,help

okay i am getting confuse with the decimals and fractions in order to make a table for the following problem.can someone help me make the tables the problem reads as follows. solve the system. 5x-3y=13 4x-3y=11 Now, i know i have to break them to the form

*asked by jasmine20 on April 15, 2007* -
## MATH,HELP

Including yourself, you have an 11-man squad prepared to build fortifications for the next six hours. It is 98-degrees in the shade. You have directed each soldier to drink one quart of water per hour duing this period. Each individual has two 1-quart

*asked by jasmine20 on March 26, 2007* -
## math,help

help Probblem #6 solve by multiplying through with the common denominator (11)/(3)x + (1)/(6) = (8)/(3)x + (19)/(6) Problem #20 the perimeter of a rectangle is to be no greater than 300in. and the length must be 125in. write an inequality representing the

*asked by jasort20 on March 18, 2007* -
## math,help

can someone help me with this i am lost now i've been doing math for the past 8 hrs. Problem # 1 solve: 4(x-10)-3x=x-40 Problem # 2 solve for t: a = p + prt Problem#3 translate to an algebraic equation 7 less than the quotient of a number and 3 is twice

*asked by jasort20 on March 18, 2007* -
## math,help

Can someone show me how do i multiply the following fractions: (n^2-n-20)/(2n^2) times (n^2+5n)/(n^2-25) When you multiply fractions, you just multiply straight across. So if you have: 1/3 * 1/4 1*1 ---- 3*4 That's 1/12 With that in mind, let's look at

*asked by jasort20 on March 17, 2007* -
## math,help

how would i do about this problem can someone explain it to me or show me because i keep getting weird answers with an e at the end. It makes no sence. This question is: The length of human pregnancies from conception to birth varies according to a

*asked by jasmine20 on February 11, 2007* -
## math,help

How do even solve this one sum of two numbers is 32. their difference is 6. what are the numbers? x-y=6 x+y=32 add the equations... 2x=38 and solve.

*asked by jasmine20 on February 10, 2007* -
## math,help

How or can someone set this up as an equation or what steps do i do? A garden area is 30ft long and 20ft wide. A path of uniform width is set around the edge. If the remaining garden area is 400ft^2, what is the width of the path? You submitted this a few

*asked by jasmine20 on February 3, 2007* -
## math,help

can someone set this up for me as an equation so i can solve it. thanks A garden area is 30ft long and 20ft wide. A path of uniform width is set around the edge. If the remaining garden area is 400ft^2, what is the width of the path. see the frame

*asked by Jasmine20 on January 28, 2007* -
## math,help

okay Directions: find the following squares. Problem: ((w)-(1)/(4))^2 I have no idea how to even start. First, FOIL the numerator and then square the denominator. Let me know what you get. (-1w^2)/(4w^2) is this what you mean? No :) Your numerator is w-1.

*asked by Jasmine20 on January 24, 2007* -
## math,help

can someone explain to me this one as well step by step...thanks Problem #2 Solve the matrix equation AX=B for X by finding A to power. A= 2_-1_3 -3_4_-5 -4_0_6 b= 9 6 -9 Solution is: 5.43 8.22 2.12

*asked by student on July 22, 2007* -
## math,help

what formula or how do i solve for this: How many 5-card poker hands containing of 2 aces and 3 kings are possible with an ordinary 52-card deck? (4*3*2)/3! combinations of three kings x (4*3)/2)combinations of two aces = 24.

*asked by student on July 13, 2007* -
## math,help

also can somone explain to me these types of problems. directions are introduce slacks variables as necessary, then write the intial simplex tableau for each linear programming problem. find x1 >= 0 and x2 >= 0 such that x1+x2

*asked by jas on June 13, 2007* -
## math,help

I also need help with this one: Add. Express answer in simplest form. ((8)/(s))+ ((8)/(s^2)) (8s + 8)/s^2 = 8(s+1)/s^2 That isn't much simpler than the original form, but sometimes they want single denominators. wouldn't it be : (8s+8)/s^2

*asked by jasmine20 on April 19, 2007* -
## math,help

on one of last week homeworks i got this one wrong can someone explain to me what is the correct format. The demand supply equations for a certain item are given by: D= -5p+40 S=-p^2+30p-8 The correct answer was: $1.43 how do you get to this answer because

*asked by jasmine20 on April 19, 2007* -
## math,help

i need help with this one i've tried it many ways and still can't figure it out because it has the lines going between two solid lines. find the x-intercepts. y = x^2 +5x+2 x intercepts is when y is zero. 0=x^2 +5x+2 using formula 5/2 +- 1/2 sqrt (25-8)

*asked by jasmine20 on April 15, 2007* -
## math,help

I definately do not understand this problem. If y varies directly with x, and y = 600 when x = 1000, find the constant of variation K. If y is directonally (proportional) to x, then for every value of x there is a value for y multiplied by a constant

*asked by jacky on March 31, 2007* -
## math,help

What is the equation i have to use for the following question A roof rises 9.75 ft over a horizontal distance of 15.84ft. What is the slope of the roof to the nearest hundredth? Slope is given by slope=rise/run So what is the rise and what is the run?

*asked by jacky on March 31, 2007* -
## math,help

can someone help me plz...last problem simplify (7 + radical (5))(7- radical (5)) for this one i have no idea (a+b)*(a-b)= a^2 - b^2 memorize that, it is the factors of the difference of squares. In this case, a=7, b= sqrt5 so, it simplifies to 49-5=44 So

*asked by jasmine20 on March 29, 2007* -
## math,help

subtract. express your answer in simplest form (2)/(5) minus (y)/(y-2) (2/5)-(y)/(y-2) Multiply by 5(y-2) [2(y-2)] - 5y Clear the fraction and combine terms.

*asked by jasort20 on March 18, 2007* -
## math,help

is this correct solve and graph the solution set 3(x-4) > 7x-9 my steps 3x-12 > 7x-9 3x-7x > -9+12 -4x > 3 (-4x)/(-4) > (3)/(-4) x< -(3)/(4) how do i graph it also well, everything to the left of -.75 is x. so then am i correct or completely wrong...

*asked by jasort20 on March 18, 2007* -
## math,help

can someone show me these steps with the division like 2 --- 1 which would mean half. the following though. so i can see it. Simplify 3 --- + 1 x-5 ----------- 1 - (4)/(x-5) Get least common denominator. For top part, the LCD is x-5. So the 1 becomes

*asked by jasort20 on March 14, 2007* -
## math,help

Is it the same thing : fibonacci math and the golden mean? for one i know that this type of math deals with sequences but can someone explian to me briefly the differnces and similarities. http://en.wikipedia.org/wiki/Golden_ratio

*asked by jas20 on March 10, 2007* -
## math,help

What is missing of the binominal in the following: (radical 3 minus 2) ( ?) = -1

*asked by jas20 on March 9, 2007* -
## math,help

What are two consecutive integers whose square roots are also consecutives integers? 0 and 1 Thank you for helping me Rom how do you know that its 0 and 1....

*asked by jas20 on March 9, 2007* -
## math,help

Can someone explain to me the reasoning involved in each step when simplifying the fraction 42/56. I had this question wrong in my previous exam...I don't know what i was thinking when answering it......but i like to know what was the actual responce for

*asked by jas20 on March 4, 2007* -
## math,help

can some one help me set this up into eqautions to be solved please. One number is 6 more than another. If the sum of the smaller number and 3 times the larger number is 34, find the two numbers. x=10 y=4 Those are the answers but how do you get to them. 3

*asked by jasmine20 on February 13, 2007* -
## math,help

What does it mean to factor an algebraic expression into prime factors? Prime factors are factors that cannot be further factored. Do you know what a interval is in math terms? i need the definition yeah so what do you mean it should be put in help not

*asked by jasmine20 on January 30, 2007* -
## math,help

I read the meaning of function notation but i still don't understand why are they so important. during an art contest at your school, you and a classmate each won blue ribbons for one third of the pieces you entered in the contest. You won two blue ribbons

*asked by jasmine20 on January 29, 2007* -
## math,help

I have forgotton how to change a decimal into a fraction can you please give me the formula. for example for: -2.75 You just have to move the decimal two places to the right and put it over 100. If you multiply a number by some factor and divide it by the

*asked by jasmine20 on January 29, 2007* -
## math,help

can someone please just set the equation for me to solve this problem . thanks A solar collector is 2.5m long by 2.0m wide. It is held in place by a frame of uniform width around its outside edge. If the exposed collector area is 2.5m^2, what is the width

*asked by Jasmine20 on January 28, 2007* -
## math,help

this other one how can i actually prove it if this is the equation to use. the problem states: Prove that if a line has slope ma nd y-intercept b, then an equation of th eline is y=mx+b. then it says (Hint: use the point-slope equation theorem) I've looked

*asked by Jasmine20 on January 25, 2007* -
## math,help

how do you convert miles to feet. what formula do i use. one mile=5280feet so you would multiply the number of miles to 5280 to get feet thank you

*asked by jasmine20 on January 15, 2007*