Answer:
x = 5
Step-by-step explanation:
a² + b² = c²
x² + 12² = 13²
x² + 144 = 169
x² = 169 - 144
x² = 25

x = 5
7.5 ft because
6/30 = .0005 so then x we factor in equals 7.5 for
Hi!
If I have done this correctly, then the answer is:
2 million is 80% of 2.5
That means that 20% of the water evaported.