1. what is the solution of the matrix equation ?
[9 4] x= [-9 -6]
[2 1] [-1 -8]
a. [5 -26]
[9 -60]
b. [-5 26]
[-1 -8]
c. [-5 26]
[9 -60]
d. [9 26]
[9 1]
solve the system
{ 2x +y - 4z = -30
{ 3x + 2y +2z =-8
{5x + 5y + z = -26
a. (-30,-8,-26)
b.(4,-2,4)
c. (-4,-2,4)
,2,-4)

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