A surveyor needs to measure the distance, AB, across the lake. Beginning at E, he locates the midpoint, C, of AE and the midpoint, D, of BE. He measures CD. What id AB? someone please help me​

Se tiene en una caja de canicas 10, 4 blancas y 6 negras ¿cual es la probabilidad que en 2 extracciones con reemplazo sean blancas? ¿cual es la probalidad que en 2 extracciones sin reemplazo sean negras?

The evening newspaper is delivered at a random time between 5: 30 and 6: 30 pm. dinner is at a random time between 6: 00 and 7: 00 pm. each spinner is spun 30 times and the newspaper arrived 19 times before dinner. determine the experimental probability of the newspaper arriving before dinner.

3x = 729 solve for x plz . it's urgent. will mark