Mathematics

10 points, math help please? :)

Ok well I have this question: 5-1/3x(6-2)+2 When I do it on the calculator it says the answer is 5 2/3 but whenever I try to do it I get 6 2/3. Can someone explain how to do this question? Ive tried

Prove function is continuous using epsilon delta

Hello, The function given is f(z)=(z^2+3)/(z+1) and the domain is the complex plane C\{-1}. Now let epsilon e>0 be given, so that |f(z)-f(zo)|=|(z-zo)(z^2-zo^2+zzo-3)/(… now I can set delta d=(z+1)(

Maximize a Function f(x,y) on a unit circle

Hi, I have the function f(x,y) = x^3 + 3y^2 +2y and I need to maximize it on the unit circle, x^2 + y^2 = 1. From here I defined a function g(x,y) = x^2 + y^2 - 1 = 0. I have tried 2 methods of solv

Optimization help please!

A company is constructing an open-top, square based, rectangular metal tank that will have a volume of 27ft^3.What dimensions yield the minimum surface area?Round to the nearest tenth, if necessary.

MATH PRECAL HELP please

Two planes start from Los Angeles International Airport and fly in opposite directions. The second plane starts 1/2 hour after the first plane, but its speed is 80 kilometers per hour faster. Find the

I have a quick derivative question

I have one equation X=1/3(2t+1)^3/2 I have found the derivative to be 1/2(2t+1)^1/2 The question then asks me to square the equation and thats where it confuses me. Would I have square the numbers in

Show algebraically that f and g are inverse functions.

f(x)=9x-8g(x)= x+8/9 (x+8 is numerator, 9 is denominator) please make clear in work what is numerator and denominator since this is text solution: f(g(x))=f(x+8(numerator)/9(denominator))… g(f(x))=g(9

Are numbers with even decimals even

Same with numbers like 3.6. There odd but the decimals even.-No. The (simple) definition of an even number is that if you divide by 2 you get an integer (or a number that does not have a decimal or fr

Simplifying trigonometric expression

(1-4cos^2(t)*sin^2(t))/((cos(t)+sin(t))^… Please show all the workings-(1-4cos^2 t *sin^2 t)/(cos t + sin t)^2 =[1-(2cos t sin t)^2]/(cos^2 t + sin^2 t + 2sin t cos t) =[1-sin^2 2t]/(1 + sin 2t) =[(1+

Estimating instananeous rates of change from equations

A diver is on the 10 m platform, preparing to perform a dive. The divers height above the water, in metres, at time t can be modelled using the equation h(t) = 10 + 2h - 4.9t^2 (a) determine when the

4(y-1)^2-2(y+3)^2-(2y+1)^2, please explain in steps how to answer this question, it is driving me insane!!!!!!

I keep getting the same wrong answer, the answer is supposed to be -2y^2-24y-15 thank you-Calm down, take a deep breath, and work through it a step at a time.First expand the squares, then multiply t

How many solutions do the following equations have

2. How many solutions do the following equations have? 6y-2z = -12 -4x-3y+9z = 46 4x+3y-9z = -46 A none B precisely one C precisely two D infinitely many-Since equation 2 may be wroten as 4x+3y-9z=-4

A question to do with graphical solutions of equations.

Assuming the graph of y=x²-8x-7 has been drawn, find the equation of the line which should be drawn to solve the equation 2x²=16x+2 I tried so many times but i keep getting it wrong! The answer is y=

Find y, if (-30 degrees, y) lies of the graph of y=6sin2(x+75degrees) - 3.

How would I go about solving this?-y=6sin2(x+75degrees) - 3 y = 6sin2(-30+75degrees) - 3 = 6sin(45) - 3 = (6√2)/2 - 3 = 3√2 - 3 = 3(√2 - 1)-I think its coefficient not power!Report Abuse

Math problem solving question help

1. Mr and Mrs Pickford and their three children, Amanda aged 15 years, Benjamin aged 12 years and Chris aged 9 years, went on a holiday from England to France. They travelled on the 10.00 ferry from F