Find the surface area of the composite figure. 12 cm 11 cm 5 cm 4 cm 7 cm 3 cm 4 cm 12 cm SA=[ ? ] cm^ 2​

Factor the polynomial 4x4 – 20x2 – 3x2 + 15 by grouping. what is the resulting expression? (4x2 + 3)(x2 – 5) (4x2 – 3)(x2 – 5) (4x2 – 5)(x2 + 3) (4x2 + 5)(x2 – 3)

Solve for x where 0 equation: cot^2x+2cotx+1=0

Which of the following is the major negative aspect of crossover designs for research studies? a. prohibitive cost b. residual effects c-subject drepout d. incomplete randomization e. large sample size required