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If the roots of the cubic equation x^3-2x^2+kx-27=0 are in geometric progression, determine the value of k?

the sum of a number and four is tripled, the result is six less than twice the number. Find the number.?

Find all possible coordinates for S?

Math Problem Help!?

prove of sinA*sinA + sin(A+60)sin(A+60) +sin(A-60)sin(A-60)=3/2?

Find the area bounded by 2 curves?

ALGEBRA QUESTION?

How do I solve this? (8/125)^(-2/3)?

how to solve this question?

Expand (1+X+2X^2)^6 as far as the term x^3?

The point A(-6,1) is reflected over the point (-5, 3) and it's image is point B. What are the coordinates of point B?

I do not know how to solve this. (Binomial Theorem) UPDATED?

Maths Help?

|2x-1| ≥ 7?

An airplane flies at 800km/h for one-third of its flight and averages 700km/h for the rest. What is the average speed, in km? Show working?

without actually calculating the cubes, find the value of 48^3 - 30^3 - 18^3.?

If tan25=a , than tan 205 _ tan115/ tan 245 + tan 335 =? , the given value is in degree?

How do solve for 4x^3+2x-8=0?

EASY MATH QUESTION THAT I CAN'T DO?

Given that (2^p)*(8^q)=(2^n), express n in terms of p and q.?

3 Variable simultaneous equations help.?

How to solve log8/log2? working out too plz?

steps for (3x+3)^1/2-1=x find x?

How do I do this Maths Problem? It is Absolute value. | 2a | > 4 I can do it with = signs but not >'s Please explain how thanks?

Prove that each of the following identities is true:?

Find an equation for the line perpendicular Write your answer in the form y = m x + b?

The points A(1,3), B(7,1) & C(-3,-9) form a right angled triangle & lie on the circumference of a circle.What is the equation of the circle?

x^2=8x-3=0?

How do I find exact value of cos(2A) if cos A = sqrt(11)/6? And A is in Quadrant I?

maths proving question?

Please help! If (x+1) and (x-2) are factors f(x)=x^3+ax^2+bx+2, find the values of a and b and find the other factor?

Help with maths?

how is (secx + tanx)^2 equal to (1 + sinx)/(1 - sinx) ?

Determine the remainder when x^3+3x^2-x-2 is divided by (x+3)(x+5)?

how to divide the following mentally without a calculator: (4×10^−4)÷(8×10^−6)?

Solve for X^3 -x=1/4(x^2 -1) Thanks?

Complete the square to solve the equation below.?

determine the solution set for 2sin^2x =1+sinx for 0 ≤ x ≤2π?

solve the system; x+y+2z=9 3x+5y-z=21 x+2y+3z=15?

How do I factor this polynomial? 81x^2 - 36?

Given that a and 2a are the roots of the equation 8x^2 + kx + 9 = 0, find the value of a and k. Please help with full solutions )):?

Maths question!?

factorise this: x^2-4x+5=0?

Input the equation of the given line in standard form. The line including (3, 1) and (-2, 3).?

sin^6 theta + cos^6 theta = 1-3 sin^2 theta cos^2 theta?

im trying tosolve e^x=12 and 11^-6y=5 for the first part i got 2.8 but im not sure how to solve for y, please help!?

Please help ASAP?

1)Enter a quadratic polynomial which has zeros at -5 and 10.?

How can I fully factor 4x - 5x^3 + 6?

xy=35,yz=41,zx=15,solve xyz?