Answer:
∠b=82°
Step-by-step explanation:
143°=∠c+∠b (exterior angle property)
143°=61°+∠b
∠b=143-61
∠b=82°
Answer:
7 ; 6
Step-by-step explanation:
The correct answer is:
[A]: "
(
)⁴ " .
_______________________________________________
Note: (

)⁴ =

;
=

;
=

.
_______________________________________________________Consider "
Choice [B]" : "
(
)⁴ " ;
Note: (

)⁴ =

;
=

;
=

.
Note that: "

"

"

" .
__________________________________________________________Consider "
Choice [C]"
: "
(
)² " ;
Note: (

)² =

;
=

;
=

.
Note that: "

"

"

" .
__________________________________________________________ → As such, the only correct answer choice is:
__________________________________________________________Answer choice: [A]: "
(
)⁴ " .
__________________________________________________________