En un juego de la feria se subió un grupo de adultos y niños. Los adultos pagaron $20 y los niños $10. En total subieron 40 personas y pagaron $550. ¿Cuántos adultos eran?

You spin the spinner shown below once. each sector shown has an equal area. what is p(beaver ) p(beaver)? if necessary, round your answer to 2 2 decimal places.

Which of the following is closest to 32.9 x 7.5? a: 232 b: 259 c: 220 d: 265

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