Question

Please solve right now

Answer 1

Answer:

45 mph

251 ft

Step-by-step explanation:

$s = \sqrt{30fl}$

a.)

$s = \sqrt{30(0.85)(80)}$

$s = \sqrt{2040}$

$s = 45$

Answer: 45 mph

b.)

$80 = \sqrt{30(0.85)l}$

$80^2 = (\sqrt{25.5l})^2$

$25.5l = 6400$

$l = 251$

Answer: 251 ft