Is 8/5 proportional to 24/15 ?

Yes

Step-by-step explanation:

8 24

5 15

8 x3 24

5 x3 15

They both are being multiplied by 3, which makes them proportional. 24/15 can be simplified to 8/5 as well, which is another way we can figure out that they are proportional.

i need more info. are you looked to see there mph? how much they deliver? how far they go?

step-by-step explanation:

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