8. A map has a scale of 1 : 50 000. 8. a) If the distance on the map is 2,5 cm, what is the actual distance on land?
8. b) Convert the answer from a) to kilometres.
8. c) If the distance on land is 4,2 km, what is the distance on the map?

the answer is c

step-by-step explanation:

step-by-step explanation:

; fx

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