In 2009, usain bolt set the world record for sprinting 100 m in approximately 9 3/5 a second.

find his average speed in meter per second

10 5/12

 10, start fraction, 5, divided by, 12, end fraction

Step-by-step explanation:

The average speed of usain bolt in meter per second is .

Step-by-step explanation:

It is given that usain bolt set the world record for sprinting 100 m in approximately 9 3/5 a second.

Formula for average speed.

Given distance is 100 m and time in sec is

The average speed in meter per second is

Therefore the average speed of usain bolt in meter per second is .

x =-.20752

step-by-step explanation:

4^(x+2)=12

4^(x+2)=12

take the log base 4 on each side

log 4 (4^(x+2) = log 4(12)

we know log b(a^y) = y log b (a)

(x+2) log 4(4) = log 4 (12)

x+2 = log 4 (12)

we know   logb c = loga c/loga b

we want to convert to base 10   so a = 10

by default, we do not write the 10   c = 4   and b = 10

log4 10 = log 12/log 4

log4 10 = log 12/ log 4

x+2 = log 12/ log 4

subtract 2 from each side

x +2 -2 = log 12/ log 4 -2

x = 1.79248125 -2

x =-.20752

show da graph

step-by-step explanation: