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 Question 376022: what rate of interest would one need in order to double one's investment in 8 years if interest is compounded daily. Click here to see answer by mananth(12269)

 Question 375877: Use synthetic division to determine f(4), if f(x)= -2x^3-7x^2+4x+6 Click here to see answer by nyc_function(2733)

 Question 375518: a. solve 8x+x(x-6)=0 b. find the x-intercept f(x)=8x+x(x-6)=0 Click here to see answer by nyc_function(2733)

 Question 375890: Pauline wants to sell stainless steel water bottles as a school fundraiser. She knows that she will maximze prophits and raise 1024 dollars if she sells the bottles for 28 dollars each. she also knows that she will lose 4160 dollars if she sells the bottles for only 10 dollars each. a) Write a quadratic relation to model her profit. P in dollars if she sells the bottles for x dollars each b) What selling price will ensure that she breaks even Click here to see answer by ankor@dixie-net.com(15622)

 Question 376104: Can somebody help me with the following Find df=dx for the following functions: f(x) = ln(1 + x^2)/1 + x^2 Cheers Click here to see answer by Fombitz(13828)

 Question 376103: Hi can somebody please help with the below, and be as kind as to talk me through the steps, i am totally confused with this. Find dy=dx as a function of x and y when: i) x^2y^3 - x^2 + 3y - 3 = 0 ii)(1 - x^2) tan^-1 y = 3 Really appreciate this. Thanks Click here to see answer by Alan3354(30924)

 Question 376228: If you are looking at a graph of a quadratic equation, how do you determine where the solutions are? Click here to see answer by Fombitz(13828)

 Question 376238: A carpenter is building a rectangular room with a fixed perimeter of 40 ft. What dimensions would yield the maximum area? What is the maximum area? Click here to see answer by Alan3354(30924)

 Question 376236: Hi Everyone, stuck in again on a weekend doing my maths !, having problems with this one please can someone help A circular-cylindrical oil drum is required to have a given surface area S (including its lid and base), ie S is a constant. Find the proportions of the design which contain the greatest volume V . Thank You John Click here to see answer by ankor@dixie-net.com(15622)

 Question 376255: A window washer accidentally drops a bucket from the top of a 144 meter building. The height h of the bucket after t seconds is given by the formula . When will the bucket hit the ground? Click here to see answer by ankor@dixie-net.com(15622)

 Question 376333: How do we solve the following problem using factorization? The sum of the squares of two consecutive integers is 13 Find the integers. Click here to see answer by robertb(4012)
 Question 376333: How do we solve the following problem using factorization? The sum of the squares of two consecutive integers is 13 Find the integers. Click here to see answer by jim_thompson5910(28476)

 Question 376206: Hi can somebody please help with the below, and be as kind as to talk me through the steps, i am totally confused with this. Find dy/dx as a function of x and y when: i) x^2y^3 - x^2 + 3y - 3 = 0 ii)(1 - x^2) tan^-1 y = 3 Really appreciate this. Thanks Click here to see answer by robertb(4012)

 Question 376453: describe how to solve it using factorization and zero factor property. x^2 -x - 6 = 0 Click here to see answer by Fombitz(13828)

 Question 376477: describe how to solve by factoring: 1. y^3 + 2y^2 -y -2 2. a^4 b + ab^4 Click here to see answer by ankor@dixie-net.com(15622)

 Question 376647: Can someone please help with the following? Use the quadratic formula to solve the equation. 2x^2-3x=-6 (Type an exact answer, using radicals as needed. Express complex numbers in terms of i. Use integers or fractions for any numbers in the expression. Use a comma to separate answers as needed.) Click here to see answer by jim_thompson5910(28476)

 Question 376663: a soccer ball was kicked from the ground and its height in meters above ground is modeled by the function h(t)=-4.9t^2+19.6t where t represents the time in second after the ball is kicked how long is the ball in the air Click here to see answer by mananth(12269)

 Question 376649: Find two numbers whose sum is 10 and product is 18. Click here to see answer by mananth(12269)

 Question 377298: x squared + 7x + 3 = 0 solve by completing the square Click here to see answer by Fombitz(13828)

 Question 377490: Hi Can somebody please help me with this problem Confirm that the point P(1,1) lies on the curve with equation x^3-y^2+xy-x^2=0 and find the values of dy/dx and d^2y/dx^2 at that point. Please explain steps if anyone is so kind as to help Thank you Click here to see answer by Fombitz(13828)

 Question 377542: What is the vertex for the function y=-3x^2+6x Click here to see answer by Fombitz(13828)

 Question 377581: Hi will somebody be so kind as to help with this particular problem, really finding it difficult In an underground telephone cable the ratio of the radius of the core to the thickness of the protective sheath is denoted by x. The speed v at which a signal is transmitted is given by v = Kx^2 ln(1/x) where K is some positive constant. Show that dv/dx= Kx [2 ln(1/x)- 1] and hence show that the maximum speed of transmission is K/(2e). Thank you very much! Click here to see answer by Fombitz(13828)

 Question 377574: Determine the nature of the solutions of the equation. y^2=2/3y+5/7 Click here to see answer by Fombitz(13828)

 Question 377684: A parabola has the following characteristics: zeros = 10,30 axis - x = 20 vertex - (20, -10) y-intercept = 30 The equation for the factored form quadratic relation is y = a(x-r)(x-s) What is the equation? Please explain thoroughly. Click here to see answer by Fombitz(13828)

 Question 377688: Hi Can somebody please help me with these, i have attempted them and have answers in mind but unsure? Find df/dx for the following functions i) f(x)= sin(3x-1) I got = cos(3x-1).3 ii) f(x)= sqrt(x^4+1) I got = 1/2(1+x^4)^-1/2.4x^3 iii)f(x)=x/(x+1)^3 Finally f(x)=tan(x^2+2) Would appreciate some help on these a great deal Thanks Click here to see answer by Fombitz(13828)

 Question 377702: Hello. Confuse a bit with this, Find and classify the stationary points of the curve y = x^5 - x^3 and hence sketch the curve between the points x = -1 and x = 1. I Got so far Local minimum when x-0.775 and y = -0.186 Thanks in advance Click here to see answer by robertb(4012)