If arc ae = 64° and arc bd = 20°, find the measure of angle bcd.

[see attachment]

a. 22°

b. 42°

c. 44°

d. 84°

Find a third-degree polynomial equation with rational coefficients that has roots -2 and 6+i

The floor of a building consists of 3000 tiles which are rhombus shaped and each of it's diagonals are 45 cm and 30 cm in length. find the total cost of polishing the floor, if the cost per m² is rs. 4.

Which polynomial is in standard form? 3xy+6x®y2 - 4x4y + 19x? y* 18x5 - 7x{y-2xy2 + 1774 x5y5 - 3xy - 11x? y2 +12 15+ 12xy2 - 11x®ys +5x? y2 ?