What is the area of a trapezoid ABCD with bases AB and CD , 1) if: m∠C=m∠D=60°, AB = BC = 8 cm

Simplify 5 square root of 7 end root plus 12 square root of 6 end root minus 10 square root of 7 end root minus 5 square root of 6 . (1 point) 5 square root of 14 end root minus 7 square root of 12 5 square root of 7 end root minus 7 square root of 6 7 square root of 12 end root minus 5 square root of 14 7 square root of 6 end root minus 5 square root of 7

Determine the difference: 3.2 × 1010 – 1.1 × 1010. write your answer in scientific notation.

Find the center and the radius of the circle with the equation: x^2-2x+y^2+4y+1=0?