A rainfall record contains 50 years of measurements at 5-minute intervals. the annualmaximum rainfall amounts for intervals of 5 min, 10 min, 15 min, 20 min, 25 min, and 30 min are ranked as follows rank t in minutes 5 10 15 20 25 30 1 26.2 45.8 60.5 72.4 81.8 89.7 2 25.3 44.0 58.1 69.6 78.6 86.3 3 24.2 42.2 55.8 66.8 75.5 82.8 where the rainfall amounts are in millimeters. calculate rainfall intensity for a 40-year 20-min storm. (use weibull method.)

answer: 12,000

step-by-step explanation: first you ar e supposed to add. then multiply then subtract

c.)

step-by-step explanation:

a and c

for infinitely many solutions we require both left and right sides to be equal

distribute and simplify

a

14 - 8x = 20 - 8x - 6 = 14 - 8x ← both sides equal so infinite solutions

b

6x - 54 = 6x - 54 + x = 7x - 54 ← not equal

c

4x + 16 = 4x + 10 + 6 = 4x + 16 ← both sides equal so infinite solutions

d

5x - 40 + 10 = 5x + 10

5x - 30 = 5x + 10 ← not equal