A scuba diver descends farther down into the ocean from an initial depth of 14.7 feet below sea level. The scuba diver descends at a constant rate for 412 minutes and reaches a depth no more than 65.1 feet below sea level. What is the maximum rate, r, that the scuba diver may descend? r≥11.2 r≤171115 r≥171115 r≤11.2

a) 15/7

step-by-step explanation:

answer:  

step-by-step explanation:

here x represents the height of the pole,

and, the height of the shadow of the pole is 12 feet.

also, the angle of elevation from the top of the pole is 40°,

therefore,

by the low of sine,

which is the required equation for finding the value of x,

225x²+4=0

225x²=0-4

225x²=-4

x²=-4/225

x=±√-4/225