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e.g 0.2297297297 = 17/74 How do we know it is 17/74?

Thanks for the explanations:)

How do we solve three simultaneous equation = 0 with matrices (Gaussian method) How do we find the three unknowns (x1, x2, x3)? e.g (the 1, 2 and 3 are little subscripts) x2 + x3 =0 x1 + 4x2 + x3 =0 2x1 =x2 + 7x3 which is this in matrix form 0 1 1 1 4 1 2 -1 -7...

To prove : Triangle ABC is isosceles given that AD and BE are angle bisectors, AD = BE My Proof: angles EAD and DAB = x ( AD bisects the angle A) angles DBE and EBA = y (EB bisects the angle B) and since AD = EB Given AB = AB (common) Does that mean x and y are equal because the they...

Solve for x, y and z, given 3x − 2y + z = 1, −x − y − 2z = 13 and x + 3y − 2z = 9. Matrices

What is the order matrix of multiplication between a (2x 3) order and (1x 2) order matrix?

What is the m sided polygon in terms of n, given each of its interior angles = 720/n ?? Steps? The overall answer is m = 2n/ n-4?

Fe reacts with silver nitrate to make Fe 2+ and Silver metal. Why in half equations the nitrate is not involved? is it a spectator ion?

I think it is this. the x's crosses out to one x at the bottom. so the top power add to the bottom power. x^(-2 + 0.5) = -3/2?

How to find the equation of the normal line to the curve -x^2 + 4x at x=2? Thanks

Find the Cartesian equation of the smallest ellipse that passes through the point (6,0) and encloses the circle with the polar equation r =4cos theta. Indicate the coordinates of foci and eq of directrices? I think r=4cos theta (when converted to Cartesian equation: (x-2)^2 + y^2 =4)