If u = p({1, 2, 3, 4}), what are the truth sets of the following propositions?

(a) a ∩ {2, 4} = ∅.

(b) 3 ∈ a and 1 ∈/ a.

(c) a ∪ {1} = a.

(d) a is a proper subset of {2, 3, 4}.

(e) |a| = |ac |.

1 is b and 2 is d

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

sure i'm up for it

step-by-step explanation: