4z - ( - 3 z)
= 4 z + 3 z = 7 z
Answer:
;
,
.
Step-by-step explanation:
The resultant function is obtained by multiplying
by a real number
. That is:

If
and
, then
is:


Given that presence of the expression
, then:
and 
The value of a is obtained by applying the definition of logarithms:


Finally, the value of k is found by direct comparison:

A = B
6.9 => 7 8.3 => 8
8+7=15
6.2 => 6 8.5 => 9
6+9=15
so A = B
Answer:
Step-by-step explanation:
we have a 51 in sandwich
let a piece be x
we have x= shorter piece
another piece is x+6
another piece (x+6)-9=x-3
x+x+6+x-3=51
3x=51-3
3x=48
x=48/3=16
x=16, longer piece is 16+6=22, shorter piece =10