Select all that apply. Which of the following are proportions?

3/4 = 15/20
2/8 = 3/12
3/4 = 8/10
25/10 = 5/2

While scuba diving, rajeev dove to a depth of 12.6 feet below the surface of the water and then descended another 8.7 feet. what expression can be used to find rajeev's new position? 12.6 – 8.7 –12.6 – 8.7 –12.6 – (–8.7) 12.6 – (–8.7)

15 and 14.7 are 1 apart, so 15 – 14.7 must be 1.

What is the sum of the first 8 terms of the geometric series