A lifeguard is sitting on a platform, looking down at a swimmer in the water. The lifeguard’s line of sight is 8 feet above the ground and the swimmer is 30 feet away from the base of the lifeguard platform. What is the angle of elevation from the swimmer to the lifeguard?What is the exact distance from the lifeguard to the swimmer?

step-by-step explanation:

the original amount doesn't ''re just looking for the time it takes for 1/2 of the substance to we have

(1/2) =)     take the ln   of both sides

ln (1/2)   = )   and we can write

ln(1/2) = ) lne     and lne   = 1     so we have

ln(1/2) = -.1092t     divide both sides by -.1092

t = ln(1/2)/-.1092 = about 6.347 days = about 6.3 days (rounded)

47.28 or 47.2857143

step-by-step explanation:

you just divide 331 by 7 and you get that answer. ( i think so tho)