What is the answer for -2/5÷8/3

-3/20

Step-by-step explanation:

When dividing fractions you can flip the second number and multiply it. In this case you have -2/5 ÷ 8/3, but you can turn that into -2/5 x 3/8 just by flipping the second number. When multiplying fractions you can just go straight across. -2 x 3 is -6 and 5 x 8 is 40. This gives you -6/40 which can be simplified by dividing the top and bottom of the fraction by 2 and getting -3/20

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